`
`
`
`United States Patent 5
`
`Alwadish
`
`
`
`[11] Patent Number:
`
`
`[45] Date of Patent:
`
`
`
`
`
`5,063,610.
`
`
`Nov. 5, 1991
`
`[54]
`
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`
`[75]
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`[73]
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`
`[21]
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`[22]
`
`[63]
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`
`
`[51]
`
`[52]
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`
`[58]
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`BROADCASTING SYSTEM WITH
`
`
`
`SUPPLEMENTAL DATA TRANSMISSION
`
`
`AND STORAGE
`
`
`
`
`
`
`
`Inventor: David Alwadish, New York, N.Y.
`
`
`
`
`
`Assignee:
`Ing Communications, Inc., New
`
`
`York, N.Y.
`
`
`
`Appl. No.: 663,298
`
`
`
`Filed:
`Feb. 28, 1991
`
`
`
`
`
`
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`
`
`Related U.S. Application Data
`
`
`
`
`
`
`
`Continuation of Ser. No. 413,536, Sep. 27, 1989, aban-
`doned.
`
`Tint. C15 occ ccccsccccnecenreensseseneeetasens HO04B 7/00
`
`
`
`
`
`
`
`
`
`
`US. Cl. ee eeccesssecesseessssesseeeeseeeeens 455/45; 455/66;
`
`
`455/158; 455/186
`
`
`
`
`
`
`
`Field of Search..................... 455/3, 6, 42, 45, 66,
`
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`
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`455/68, 70, 158, 185, 186; 381/1, 2, 3, 4, 5, 6,
`77, 78, 81, 119
`
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`
`
`References Cited
`
`
`U.S. PATENT DOCUMENTS
`
`
`4,268,724
`5/1981 Hubbard .
`
`
`
`7/1981 Skerlos ........essescseseseeeseeees 455/158
`4,279,035
`
`
`
`
`
`4,379,947 4/1983 Warner ........ccccssesceseseresresene 370/11
`
`
`
`
`
`4/1983 Leventeret al.
`.
`4,380,027
`
`
`
`
`4,392,246
`7/1983 Niioka et al.
`.
`
`
`
`
`.
`4,488,273 12/1984 Nokihara et al.
`
`
`
`
`4,534,654
`8/1985 Maisel ..........c:csccsesscseeereeeees 381/14
`
`
`
`
`8/1987 Ferrer et al. wu... 340/825.44
`4,686,528
`
`
`
`
`
`4,686,707
`8/1987 Iwasaki et al.
`.
`
`
`
`
`4,787,085 11/1988 Suto et al. wc eseseeeeeeees 455/6
`
`
`
`
`
`2/1989 Morihiro et al.
`4,805,217
`.
`
`
`
`
`4,829,500
`5/1989 Saunders .........ccceeseesseceesees 381/77
`
`
`
`
`5/1989 Welsh .
`4,829,558
`
`
`
`
`
`
`[56]
`
`
`
`
`
`
`
`
`
`
`
`
`§8-131865
`60-170332
`
`......ceseessesseeee 381/81
`4,879,751 11/1989 Frankset al.
`
`
`
`
`
`
`4,887,308 12/1989 Dutton........
`
`
`
`
`
`
`3/1990 Levine wececcccccccsssssesssseieee 455/181
`4,908,713
`
`
`
`
`
`FOREIGN PATENT DOCUMENTS
`
`
`
`8/1983 Japan coececsccsccccsssesssssvesesesseeee 455/181
`
`
`
`
`
`
`
`9/1985 Japan .
`OTHER PUBLICATIONS
`
`
`
`
`
`
`
`
`
`E. B. U., Specifications of the radio data system RDS
`
`
`
`
`
`
`for VHF/FM sound broadcasting, Mar. 1984.
`
`
`
`
`
`
`
`G. L. Dexter, a new age for radio, Popular Electronics,
`Oct. 1989,
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`Primary Examiner—Reinhard J. Eisenzopf
`Assistant Examiner—Lisa Charouel
`
`
`
`
`
`
`Attorney, Agent, or Firm—Leo Zucker
`
`
`ABSTRACT
`(57
`
`
`
`
`
`
`
`to-
`A technique for broadcasting program material
`
`
`
`
`
`
`gether with encoded itemsof information pertaining to
`
`
`
`
`
`
`
`
`the program material such as the title of a broadcast
`
`
`
`
`
`
`
`
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`musical piece, the artist name, catalog number, and the
`
`
`
`
`
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`like. A numberofsources of recorded program material
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`
`
`
`
`
`
`are provided at a broadcast site, and encoded informa-
`
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`
`
`
`
`
`
`tion data pertaining to the program material is pro-
`cessed for transmission from the site with the broadcast
`
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`
`
`
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`
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`program material. A receiver reproduces the program
`
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`
`material and, upon entry of a memory command, de-
`codes and stores the transmitted items of information
`
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`
`
`
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`
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`data in a memory. Sets of stored information datarelat-
`
`
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`
`
`
`ing to selected broadcasts can later be retrieved from
`
`
`
`
`
`
`
`the memory and output by a display and/or a printer
`device.
`
`
`
`
`
`30 Claims, 3 Drawing Sheets
`
`
`
`
`
`
`STO:Prev '
`
`Petitioner Hyundai Ex-1011, 0001
`
`Petitioner Hyundai Ex-1011, 0001
`
`

`

`
`U.S. Patent
`
`
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`Sheet 1 of 3
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`5,063,610
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` soaks1989
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`105.3 ~ 15:15}
`
`ACMEau
`A/HOLIDAY GIFT:
`
`
`'10PM
`
`
`
`APRIL!
`30,1989
`
`
`105.3
`- 15:16
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`A/JOHN DOE
`
`
`! AUTO DETAILIN
`
`
`| 99 MAIN ST
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`
`52
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`JANI 10, 1989
`
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`96.7|- 08:30
`T/ROUTE 66.
`
`
`
`BOB SMITH
`
`
`LP 01234 |
`
`
`
`JAN 1d,
`1989
`F 101.9 10:45 |
`
`
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`T/POINCIANA
`
`
`"JIM JONES
`
`
`CD 98765
`
`FIG.3
`
`!
`
`FIG.4
`
`
`
`Petitioner Hyundai Ex-1011, 0002
`
`Petitioner Hyundai Ex-1011, 0002
`
`

`

`
`U.S. Patent
`
`
`
`
`Nov. 5, 1991
`
`
`
`Sheet 2 of 3
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`5,063,610
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`
`
`GEVNNZLNY
`
`ZS
`
`SSIAWOY
`
`WIULS
`
`DaVOGAIYi
`WALTOANT
`
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`
`OC
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`
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`Dt
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`NISSFIONA
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`ALASIGNT|SSLpa
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`ONY
`
`TOYLNOD
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`
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`Petitioner Hyundai Ex-1011, 0003
`
`Petitioner Hyundai Ex-1011, 0003
`
`
`
`
`
`

`

`
`U.S. Patent
`
`
`
`
`Nov. 5, 1991
`
`
`
`Sheet 3 of 3
`
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`5,063,610
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`
`
`CYVEWAS
`
`PEC.
`
`t-
`
`Wanif22
`
`
`
`OE:UNEoa2LVO/FMLA47179](((5N
`DENGGUMAA|Yea)
`VETLINGBOF|ze
`
`ce"|pLEE(a9
`
`“ffsVeEC
`AVYTSSIT
`
`WWE°GB0Z902
`
`
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`
`
`
`
`
`
`
`
`
`92E.
`
`
`
`PEAOS?
`
`99OlS
`
`Petitioner Hyundai Ex-1011, 0004
`
`Petitioner Hyundai Ex-1011, 0004
`
`
`
`
`

`

`1
`
`
`
`5,063,610
`
`BROADCASTING SYSTEM WITH
`
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`SUPPLEMENTAL DATA TRANSMISSION AND
`
`
`
`STORAGE
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`2
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`new homereceivers. It is acknowledged that a chang-
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`ing message display on an automobile receiver could
`divert the driver’s attention from the road and thus
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`present a safety hazard.
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`U.S. Pat. No. 4,805,217 issued Feb. 14, 1989, discloses
`
`
`
`
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`
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`a receiving set with a playback function. A portion of an
`
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`audio signal that is reproduced by a receiver can be
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`stored in a digital memory, for later recall by the lis-
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`tener. Likewise, U.S. Pat. No. 4,268,724 issued May 19,
`
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`1981, and U.S. Pat. No. 4,488,273 issued Dec. 11, 1984,
`
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`
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`disclose systems in which a received radio broadcast
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`program is first recorded on a continuous loop of mag-
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`netic tape prior to being audibly reproduced.
`SUMMARYOF THE INVENTION
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`An object of the invention is to provide a broadcast-
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`ing technique that allows listeners safely to record se-
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`lected auxiliary information transmitted during a broad-
`cast.
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`Another object of the invention is to provide a broad-
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`casting technique wherein supplemental
`information
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`pertaining to broadcast program materialis inserted for
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`transmission with the program material for decoding
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`and storage in a broadcast receiver.
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`A further object of the invention is to provide a
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`broadcasting technique in which items of identifying
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`information are encoded for transmission with program
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`material from a broadcasting station, and wherein the
`information items are decoded and stored in a receiver
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`for later recall by a listener.
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`Accordingto the invention, a method of broadcasting
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`whereby supplemental information is encoded for trans-
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`mission with program material, includes reproducing at
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`a broadcast site a source of program material, process-
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`ing the reproduced broadcast material for transmission
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`over a broadcast carrier signal, inserting encoded items
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`of information into the carrier signal, receiving with a
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`specially adapted broadcast receiver the transmitted
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`program material and the inserted information items,
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`and enabling the received information items to be re-
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`called and decoded by meansin the specially adapted
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`receiver after reception of the program material.
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`According to another aspect of the invention, a
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`method of broadcasting program material together with
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`items of information that identify the program material,
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`includes providing at a broadcast site a number of
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`sources of recorded program material, encoding in a
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`given source items of identification data that identify
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`the program material recorded in the source, reproduc-
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`ing the recorded program material and the items of
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`identification data from the given source, transmitting
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`the reproduced program material on a broadcast carrier
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`signal, and processing the reproduced items of identifi-
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`cation data for insertion into the carrier signal.
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`The various features of novelty which characterize
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`the invention are pointed out with particularity in the
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`claims annexed to and forming a part of the present
`
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`
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`disclosure. For a better understanding of the invention,
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`its operating advantages and specific objects attained by
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`its use, reference should be had to the accompanying
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`drawing and descriptive matter in which thereareillus-
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`trated and described preferred embodiments of the in-
`vention.
`
`BRIEF DESCRIPTION OF THE DRAWING
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`In the drawing:
`
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`CROSS REFERENCE TO RELATED
`
`
`APPLICATION
`
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`This application is a continuation of my co-pending
`
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`
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`
`
`
`
`application Ser. No. 413,536 filed Sept. 27, 1989, now
`10
`abandoned.
`
`BACKGROUNDOF THE INVENTION
`
`
`I. Field of the Invention
`
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`The present invention relates generally to broadcast-
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`ing systems, and moreparticularly to a system in which
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`supplemental data is inserted in a broadcast carrier for
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`transmission to specially adapted receivers capable of
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`decoding the data.
`II. Discussion of the Known Art
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`Listeners of all kinds of music frequently wish they
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`can remember the name,artist or other pertinent infor-
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`mation relating to a musical piece or selection they
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`heard during a recent broadcast. If the listener happens
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`to hear an announceridentify the piece before orafterit
`25
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`is played over the broadcaststation, he or she may note
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`the information down with pencil and paper if conve-
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`nient. Usualiy, however, the selection is first heard by
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`the listener while driving or under some other condition
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`whereit is not possible or practical to jot downidentify-
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`ing information so as to enable the selection to be later
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`purchasedat a record/tapestore.
`Broadcast stations often transmit a number of musical
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`pieces, one right after the other, by various artists and
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`selected from different records or tapes, without any
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`narration or other meansofidentifying the title of each
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`piece just before or after it is played. Thus, when the
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`announcer identifies each of, e.g., five selections that
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`were played successively over the past 15 minutes, the
`listener cannot be sure whichtitle and nameidentifies a
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`40
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`particular selection he or she may haveespecially liked.
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`Asfar as is known, no existing or proposed commer-
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`cial broadcasting system affordsthe listener an opportu-
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`nity to identify, by means of supplemental information
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`encoded in the broadcast carrier signal, items such as
`45
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`the artist and title of a musical selection simultaneously
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`with its broadcast. A frequency-modulation (FM)
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`broadcasting system has been proposed in which auxil-
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`iary tuning and program information is inserted into a
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`monophonic or stereophonic FM broadcast in the com-
`50
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`mercial FM band of 88 to 108 MHz. See Specifications
`
`
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`
`
`
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`
`of the Radio Data System RDS for VHF/FM Sound
`
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`
`
`
`Broadcasting, European Broadcasting Union, Tech.
`
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`
`
`3244-E (March 1984), referred to hereafter as “the EBU
`
`system”.
`55
`
`
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`
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`
`
`In the EBU system,blocks of character data are con-
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`tinuously inserted, in synchronized fashion, in a 57 KHz
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`sub-carrier of a FM broadcast signal. The blocksof data
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`may correspond to (1) the country from which the
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`broadcast originates, (2) the area of coverage, viz., in-
`60
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`ternational, national or regional, and (3) the type of
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`program suchas traffic information, sports, pop music
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`or the like. Circuitry within specially designed automo-
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`bile receivers would, upon decoding the data blocks,
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`cause the receiver either to stay tuned to the received
`65
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`station, or to scan for anotherstation that is transmitting
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`a certain kind of program information pre-selected by
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`the driver. The EBU system does contemplate transmis-
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`sions of text material (Radiotext) addressed primarily to
`
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`15
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`20
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`30
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`
`Petitioner Hyundai Ex-1011, 0005
`
`Petitioner Hyundai Ex-1011, 0005
`
`

`

`
`
`15
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`25
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`30
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`5,063,610
`
`.
`3
`
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`FIG. 1 is a perspective view of the overall appear-
`
`
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`
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`ance of a receiver and printer arrangementaccording to
`
`
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`the present invention:
`
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`
`
`FIG. 2 is a perspective view of the overall appear-
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`
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`ance of a second embodimentofthe receiver in FIG. 1;
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`FIG.3 is a view of two framesofprinted identifica-
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`tion text as may be obtained with the printer in FIG. 1,
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`FIG.4 is a view of two frames of advertising text as
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`may be obtained from the printer in FIG. 1;
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`FIG.5 is a schematic block diagram ofthe configura-
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`tion of a broadcasting station according to the inven-
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`tion; and
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`FIG. 6 is a schematic block diagram of the configura-
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`DETAILED DESCRIPTION OF THE
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`INVENTION
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`FIG.1 is a perspective view of a receiver 10 and an
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`associated printer device 12 arranged according to the
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`invention. Receiver 10 may, for example, be dimen-
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`includes connectors on its back panel (not shown) for
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`mating with an antenna cable 14 and a pair of speaker
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`cables 16a, 165. A connector J1 for printer cable 18a is
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`also provided at a convenient location on the face of the
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`receiver 10. If the receiver 10 is removable,
`it may
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`desirable to locate the printer cable connector J1 on the
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`rear apron of the receiver chassis, together with the
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`connectors for the antenna cable 14 and speaker cables
`16a, 166.
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`Receiver 10 has a front panel 20 on which an on/off
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`volume control 22, treble control 24, and bass control
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`26 are arranged. In the illustrated embodiment,
`the
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`receiver 10 is an FM broadcast receiver, and broadcast
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`stations are tuned in by scanning either upwardly or
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`downwardly in frequency by way of corresponding
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`scan buttons 28a, 285. Either the tuned-in station fre-
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`quency, or the current time, is displayed via a liquid
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`crystal (LC) display panel 30. Selection of the display of
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`either the tuned-in station frequency or the current
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`time, is made via FREQ/TIMEbutton 31.
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`Another LC display panel 32 is provided on the re-
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`ceiver front panel 20, and allows for display of up to 3
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`lines of alphanumeric text. Each line may allow for
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`display of up to, for example, 16 characters. As shown
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`in FIG.1, the toporfirst line 32a of the display panel 32
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`displaysa title, e.g., “Route 66” identifying a broadcast
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`musical piece. The center or second line 326 of the
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`panel 32 displays the artist’s name, and the bottom or
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`third line 32c of the LC display panel 32 is adapted to
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`display a corresponding record or tape catalogue num-
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`ber to facilitate the purchase of the musical piece by a
`listener.
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`A memory button 34 is arrangedin the vicinity of the
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`LC display panel 32, and, when depressed, serves to
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`store the various information items displayed by the
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`lines 32a, 326 and 32c in a receiver memory, as ex-
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`plained in detail below with respect to FIG.6. A recall
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`button 36, also near the display panel 32, enables the
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`recall of previously stored information items, for dis-
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`play and printing. A print button 38 causes the printing
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`of the recalled information items via the printer device
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`12 as shown, for example, in FIGS. 3 and 4.
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`Also,a display select button 40 is arranged nextto the
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`panel 32 to allow for either on-line display of decoded
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`information items, or display of successive sets of infor-
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`mation items as recalled when operating the button 36.
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`FIG. 2 is a view of a second embodimentof the re-
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`ceiver 10 in FIG. 1. Corresponding components have
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`similar reference characters. Instead of being in the
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`form of an automobile radio, receiver 10’ is adapted to
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`be a portable unit and is powered, for example,either by
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`a conventional self-contained battery or via an AC wall
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`adapter (neither of which appears in the drawing). A
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`receiver according to the present invention can also be
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`in the form of a hometable top or a cabinet mounted
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`unit, and respond to broadcasts in the commercial AM
`and short-wave bandsas well. Further discussion of the
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`receiver 10’ in FIG. 2 follows later below.
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`FIG.3 is a view of a portion of a paper strip 50 on
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`which characters have been printed by the printer de-
`vice 12. In addition to the three lines of identification
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`information displayed by the LC display panel 32, a
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`date, a station frequency and a time of day appearat the
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`uppermost twolines of successive frames 52, 54 printed
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`on the portion of the paper strip 50 shown in FIG.3.
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`Specifically, print frame 52 indicates that on Jan. 10,
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`1989, while listening to an FM station broadcasting at a
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`frequency of 96.7 MHz,thelistener activated memory
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`button 34 on the receiver 10 while listening to a musical
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`piece entitled “Route 66”, performed by “Bob Smith”,
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`and having a record catalogue number “LP 01234”.
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`Further, as shownat the endofthe secondline from the
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`top of frame 52, memory button 34 was operatedat 8:30
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`AM,i.e., the time of day during which the musical piece
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`wasactually being broadcast.
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`Frame 54 on the paperstrip 50 indicates that on the
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`same day, i.e., Jan. 10, 1989, but at 10:45 AM,the lis-
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`tener activated the memory button 34 while tuned to an
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`FMstation transmitting at 101.9 MHz and broadcasting
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`a piece entitled “Poinciana” as performed by “Jim
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`Jones”, and having a compact disc (CD) catalogue
`number “CD 98765”.
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`The two print frames 52, 54 which appear succes-
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`sively on the portion of the paper strip 50 shown in
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`FIG. 3, are obtained as follows. Display button 40 is
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`operated to set the receiver 10 in a store/print mode.
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`Recall button 36 is then operated and, for example, the
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`most recentset of identification data that was stored by
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`operation of the memory button 34 is displayed on the
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`LC display panel 32. Next, printer device 12 is con-
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`nected to the receiver 10, and print button 38 is oper-
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`ated. Sets of stored identification data are then printed
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`successively in the form of the frames 52, 54, and so on,
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`on the paperstrip 50 by the printer device 12. As men-
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`tioned, date, time and station frequency information are
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`included in the frames 52, 54, so that the listener can
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`correctly associate the printed data with the piece that
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`was being broadcast when the memory button 34 was
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`operated.
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`As shown in FIGS. 1 and 3, at the beginning of the
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`line identifying the title of a musical piece, a prefix
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`symbolor flag ““T/” appears. The symbol, which stands
`for “Title” identifies the information on the line and the
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`following lines, as information pertaining to thetitle of
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`a piece which was broadcast when the memory button
`34 was activated.
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`The present invention contemplates that in addition
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`to providing information regarding the identification of
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`a broadcast musical piece, a broadcasting station can
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`transmit character text for purposes of advertising, for
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`example, during periods when no musical program
`material is broadcast.
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`FIG. 4 showsa portion of a paper strip 50’ on which
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`such advertising text is printed by the printer device 12
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`65
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`Petitioner Hyundai Ex-1011, 0006
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`Petitioner Hyundai Ex-1011, 0006
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`

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`5,063,610
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`5
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`when the receiver 10 has been set in the print mode by
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`the recall button 36 and operation ofthe print button 38.
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`During those periods when no pre-recorded program
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`material is being broadcast by a station, and the station
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`announcer may be reading an advertisement, related
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`advertising text is encoded in the broadcastcarrier sig-
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`nal and transmitted to the receiver 10. With the display
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`button 40 set in the on-line mode, three lines of the
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`advertising text are displayed simultaneously with re-
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`ception of the broadcast signal, by the LC display panel
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`32. The advertising text, as shown by thelast three lines
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`in the print frames 56, 58 in FIG. 3, provides essential
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`information in regard to a typical advertisement, e.g.,
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`the advertiser name, business and location. At the be-
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`ginningof thefirst line of the advertising text, a prefix
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`symbolor flag “A/”is provided to designate the infor-
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`mation on theline and the following lines of each frame
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`as advertising material.
`If the listener hears an advertisement of interest an-
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`20
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`nounced over a broadcast station, and would like to
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`record essential information relating to the advertise-
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`ment, he or she need only depress the memorybutton 34
`while the receiver 10 is in the on-line mode. When the
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`receiver10 is later set in the print mode by recall button
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`36, the printer device 12 connected and print button 38
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`operated, sets of advertising text stored by the receiver
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`are printed on the paper strip 50’ together with the date,
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`time and frequencyofthe originating broadcaststation.
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`The aboveso-called advertising text may also include
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`various sorts of messages originating directly from the
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`announcer during intervals between music broadcasts,
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`e.g., “Radio Ronald says don’t forget Valentine’s Day”.
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`FIG.5 is a schematic block diagram of an FM radio
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`broadcast station 100 equipped to transmit encoded
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`information text together with the broadcast carrier
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`signal, according the invention.
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`A studio control and processing unit 102 is provided
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`to control operations of various components comprising
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`the broadcast station 100. The control and processing
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`unit 102 includes one or more central processing units
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`(CPUs), program and working memories and input-
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`/output devices, as are ordinarily required in accor-
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`dance standard engineering practice.
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`Since program source material may be in the form of
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`analog media such as long playing records (LPs) or
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`tapes; or digital media such as CDs or digital audio
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`tapes (DATs), an analog source select switching unit
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`104 and a separate digital source select switching unit
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`106 are provided. Depending on the particular program
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`source material, one ofthe source select switching units
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`104, 106 is enabled via control and processing unit 102.
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`During periods when the studio microphoneis “live”,
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`an announceror other persons’ voices are picked-up by
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`one or more microphones (MICs) coupled to the analog
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`source select switching unit 104, the output of whichis
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`coupled to one input of analog switch 108. Digital
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`source select switching unit 106 has an output bus cou-
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`pled to an inputof a digital-to-analog convertercircuit
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`(DAC) 110 the analog output of which is coupled to
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`another input of the analog switch 108. At least part of 60
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`the output bus from the digital source select unit 106 is
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`coupled to an input of an information item extractor
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`circuit 112 the purpose of whichis as follows.
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`The auxiliary or identifying information text to be
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`encodedfor transmission with a broadcastcarriersignal
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`by the station 100, preferably has a digital format.It is
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`therefore contemplated that various sources of musical
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`program material such as CDs and DATswill provide,
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`6
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`in addition to pre-recorded musical program material,
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`identification information or data in digital form which
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`data corresponds to that described in connection with
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`FIGS.1 and 3 for purposesofidentifying thetitle, artist
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`and catalogue numberpertaining to the prerecorded
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`material. Such identification text, hereafter referred to
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`as “information items” is capable of being detected
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`separately during play of the encoded digital source
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`material by the information item extractor circuit 112
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`which provides the extracted data to one input of a data
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`select switch 114. The “T/”prefix which appears in the
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`display and print formats shown and described in con-
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`nection with FIGS. 1 and 3, may be encoded in the
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`digital program source material together with the infor-
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`mation item data, or can be appendedto that data when
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`output from the extractor circuit 112.
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`Since the currently available program source mate-
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`rial, whether analog or digital, will not have encoded
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`information item data, data correspondingto that repre-
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`sented in FIGS. 1-4 is inserted at the broadcast station
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`100 via a studio information item entry keyboard 116.
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`The keyboard 116 is controlled and its output is buff-
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`ered by keyboard controller-buffer circuitry 118. Key-
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`board entries made by the studio announcer or other
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`personnel are monitored via an information item key-
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`board monitor 120. Information item data entered by
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`the keyboard 116 is supplied through the buffer cir-
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`cuitry 118 to a data encode/insert stage 122. Accord-
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`ingly, character data entered via the keyboardis, prior
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`to insertion in a broadcast carrier signal produced by
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`the station 100, encoded to conform with a determined
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`standard format adopted for the information items as
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`transmitted with the carrier signal. An output of the
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`data encode/insert stage 122 is coupled to another input
`of the data select switch 114.
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`Information item data to be transmitted, whether
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`originating from a digital program material source or by
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`manual entry from the keyboard 116, is output from the
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`data select switch 114 through a suitable interface (not
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`shown) into an information item data memory 124.
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`Addressing of the data memory 124, and read or write
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`control of the memory 124 is performed by a data mem-
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`ory controller 126 which in turn is subject to the control
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`of studio control and processing unit 102. The output of
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`the data memory 124 is supplied through a buffer stage
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`128 to digital-to-analog convertor or interface 130 an
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`output of which is supplied through appropriate buffer
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`circuitry (not shown) to a sub-carrier modulator 132.
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`The sub-carrier modulator 132 may, for example,
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`amplitude-modulate a 57 KHz sub-carrier transmitted
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`by the station 100 with the broadcast carrier signal
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`while stereophonic program material
`frequency-
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`modulated on the carrier in accordance with established
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`broadcast standards. In the United States, FM broadcast
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`radio standardsare set out by the Federal Communica-
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`tions Commission (FCC) at 47 C.F.R. secs. 73.201 to
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`73.333. All pertinent portions of the cited broadcast
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`standards are incorporated by reference herein.
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`Specifically, 47 C.F.R. 73.319 permits the use during
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`either monophonic or stereophonic program broadcast-
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`ing, of a sub-carrier that may be modulated in any form
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`to transmit
`information supplemental
`to the regular
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`broadcast signals. For stereophonic sound program
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`transmissions which require insertion of a stereophonic
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`sub-carrier at 38 KHz, the frequency of the multiplex
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`sub-carrier must lie within the range of 53 KHz to 99
`KHz. 47 C.F.R. 73.319 & 73.323. In the illustrated em-
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`bodimentof the broadcast station 100 in FIG. 5, a 57
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`Petitioner Hyundai Ex-1011, 0007
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`Petitioner Hyundai Ex-1011, 0007
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`

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`15
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`5,063,610
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`8
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`7
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`and time in 24-hour format. Output date and time datais
`KHz multiplex sub-carrier is employed, this frequency
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`buffered at 224 and routed to one input of frequency-
`being the third harmonic of a 19 KHzpilot sub-carrier
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`time switch circuit 31. Frequency data corresponding
`which is required to be inserted on FM stereophonic
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`sound transmissions.
`to an FM broadcast frequency to which the tuner/-
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`demodulator 206 is presently set, is buffered at 226 and
`Reproduced program source material, or live studio
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`supplied to the otherinput of the frequency-time switch
`microphoneaudio, as output from the analog switch 108
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`circuit 31. Depending on thesetting of the switch 31,
`is applied to the input of an FM stereo encodecircuit
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`the LC display panel 30 on the front of the receiverwill
`134. Left (L) and right (R) sum