Application/Contg Number: 90/006,800
`
`Page Q
`
`Art Unit: 3992
`
`ATTACHMENT #1: The “CBS Petition.” 5
`
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`0139-
`
`CBS lnc.. 51 was: 52 Street
`Mamba. Newvuru room
`1212) 9754321
`Law Depanmem
`
`
`
`0 ‘
`
`
`
`Dear Mr. Tricarico:
`
`..—n
`
`/
`July 28, 1980
`
`Please find attached an original and 11 copies of a
`Petition for Rulemaking to amend Part 73, Subpart E
`of the Rules Covering Television Broadcast Stations
`to Authorize Teletext.
`'
`
`If you have any questions concerning the attached,
`please contact me at (212) 975—3u22.
`
`Very truly yours,
`
`A ¢%/M 7%.
`Michael Rose.
`
`Attorney
`,1-Ionorable William J. Tricarico
`Secretary
`Federal Communications Commission
`
`1919 "M" Street, N.W.
`Washington, D.C.
`2055M
`
`-
`
`.
`
`-
`
`$
`
`/
`
`/
`to‘
`
`,
`
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`* . .
`
`‘
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`4
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`Before the
`Federal Communications Commission
`“fin”.
`Washington, D. C.
`20551!
`' "
`Ah 53‘ 153 ifikflfilflfli
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`
`
`In re
`Amendment of- Part 73, Subpart E of
`the Rules'Governing Television
`Broadcast Stations to Authorize
`Teletext
`
`\./\.4§r\J\4\J\/‘J
`
`TO:
`
`The Commission
`
`JUL 3'33”
`
`PETITION FOR RULEMAKING
`
`’
`
`’
`
`,
`
`css Inc. ("ass"), pursuant to Section 1.uo1 of the
`
`_Commission's Rules, hereby petitions the Federal Communications
`
`Commission for the issuance of rules which would allow tele-
`
`vision broadcast licensees to transmit teletext. Adoption of
`
`teletext rules and standards is essential at this t1me.to
`
`.—v‘'''’'"
`
`permit
`
`implementation by United States broadcasters, such as
`
`CBS, of this major technological advance, already in use in
`
`other countries, and to channel the United States develop-
`
`ment of teletext into practical public service in furtherance
`
`of the Commission's mandate to "encourage the larger and
`
`more effective use of radio in the public interest."*
`
`
`
`‘* Section 303(3), Communications Act of 193M; as amended.
`
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`

`
`go
`
`I.
`
`Introduction
`
`Teletext is the generic term for systems that transmit
`
`alphanumeric information (letters, numbers, characters) to
`
`the home television receiver.
`
`The information is sent by
`
`special data signals transmitted simultaneously with the
`
`normal television picture or in lieu of picture information.
`
`Equipped with a special decoder, a television receiver can
`
`extract and translate that information to appear as letters,
`
`numbers and graphics on the television screen. Thus,
`
`the
`
`viewer has access to an electronic "magazine." with the use
`
`of a handéheld control unit, much like a small calculator,
`
`the viewer can select from hundreds of "pages" of teletext
`
`information. Teletext is an interrogative service. Viewers
`can request any page at any time in any sequence, and the
`
`page stays on the screen as long as the user wants.
`
`As is more fully explained in this Petition,
`
`the téletext
`
`system CBS proposes is compatible with other presently known
`
`communication technologies and is theoretically and practically
`capable of incorporating future advances.
`These two qualities
`
`~— compatibility and extensibility 7- which permit the system
`
`to adapt to new features and uses, are among the most desirable
`
`qualities of any information system. Technically,
`
`the pro»
`
`posed system may be summarized as a software-based, asynchronous,
`
`variable format system employing specific scanning lines in the
`
`vertical blanking interval ("VBI") or, on a full field basis,
`
`using any or all active picture scanning lines.
`
`-2-
`
`PMC Exhibit 2053
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`

`
`
`
`11. Statement Pursuant to Section 73.682(bz
`of the Commiss on's Rules
`-.
`
`A.
`
`CBS sets forth the following as the nature of the
`
`rules proposed: Section 73.681 should be amended to include
`
`a definition of the word "Teletext"; Section 73.682(a)
`
`should be amended to add a subsection to define the permis-
`
`' sible transmission standards; and Section 73.699 should be
`
`amended to add a new Engineering Chart, with appropriate
`
`footnotes. These amendments are more fully described in
`
`Exhibit 1, attached hereto.
`
`B.
`
`The proposed changes.wi1l have no effect on other
`
`‘transmission standards that have been adopted by the Commission
`
`for television broadcast stations; the proposed changes are
`
`entirely additive.
`
`C.
`
`As more fully described in the Engineering Statement,
`
`attached as Exhibit II, experimentation and field tests
`
`authorized by the Commission and conducted by CBS over its
`
`television network and at CBS Owned television station KMOX—TV
`St. Louis, during 1979-1980, demonstrate that television .
`
`service can be expanded by the addition of teletext, and
`
`that this addition is technically feasible.
`
`D.
`
`The proposed changes and modifications of standards
`
`will neither affect operation nor contribute to obsolescence
`
`of television receivers.
`
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`
`
`
`E.
`
`‘Those stations opting to transmit local teletext
`
`woqld require a teletext encoder, a page storage device and a
`
`multiplexer to insert teletext into the television signal.
`
`F.
`
`For the reasons set forth below, and in the attached
`
`exhibits,
`
`the proposed teletext system and the associated
`
`changes and modifications in the adopted standards will
`
`.serve the public interest, convenience and necessity.
`
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`
`
`'..
`
`-0.
`
`III. Teletext Uses
`
`A.’
`
`
`How it Works
`
`Simply stated, teletext operates by converting pages of
`
`information into electronic, digital impulses. All of these
`
`' pages of information are then superimposed upon a standard
`
`television signal and broadcast at a high rate of speed.
`
`After transmission of the complete set of pages,
`
`the cycle
`
`repeats.
`
`Each frame or page contains a unique number
`
`("header") which permits a viewer to access a specific page.
`
`A viewer "calls up" a page by pressing numbers on a
`
`key pad (as.in a hand~he1d calculator) associated with the
`
`teletext decoder.
`
`‘The decoder then searches the continuous
`
`stream of information, singles out the specified page, and
`
`' displays it on the viewer's television screen.
`
`All the foregoing occurs in an under-utilized segment
`
`of the television signal -— the vertical blanking interval.
`
`This segment normally appears as a horizontal black bar on
`
`a deliberately misadjusted television set. Portions of
`
`this bar,
`the first nine lines, are employed in synchroniz-
`ing the various signal elements,
`thereby maintaining a
`precise television picture. Lines 17 through 21 are currently
`
`authorized for a variety of ancillary signals.
`
`CBS proposes
`
`_that the remaining lines, specifically lines 10 through 16
`
`of the'VBI, be dedicated to teletext.
`
`-5-
`
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`[|)1‘.
`
`B.
`
`How it Serves
`
`‘IE’
`
`‘
`
`‘News, sports, weather and financial information could
`
`be primary teletext offerings.
`
`In-depth stories and features,
`
`headlines and sports scores could be programmed and updated
`
`and available to the teletext user upon request. Locally
`
`generated information could be applied in many ways.
`
`For
`
`instance, local commuters could check on the latest traffic
`
`conditions or updated transportation schedule information.
`
`consumer information, such as a shoppers‘ guide, could be
`provided. Reports could be displayed in different ways,
`
`including maps and charts; and because the system is inter-
`
`rogative,
`
`the viewer need not wait for such reports to
`
`"recycle.".
`
`In fact,
`
`the various uses of teletext are as
`
`infinite as the imagination.
`
`Teletext could provide exceptionally efficient captioning
`
`to the hearing-impaired community, which, of course, could
`
`benefit as well from the general visual information provided
`
`1 by teletext. Of particular importance to the hearing-impaired
`
`is the economic'fact that the market for teletext decoders
`
`would be driven by the broader demand of the general public
`for this flerible information provider, rather than being
`
`limited to those desiring specialized captioning. This would
`
`help to establish the decoder market
`
`in the first instance
`
`and would tend to hold down the vo1ume—sensitive price of
`
`.decoders.
`
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`

`
`IV.
`
`A United States Teletext Standard
`
`The public interest will be served by prompt adoption
`
`The Need For A Single Standard and Prompt Adoption
`
`A.
`
`'
`
`of FCC rules and standards for broadcast teletext. Research;
`
`experimentation and field testing in Europe for more than
`
`ten years and in the United States for the last few years
`
`have preceded this Petition. Although the United States has
`
`traditionally been in the forefront of advances in broadcast
`
`'
`
`technology, teletext systems have already been introduced,
`
`either on a regular or p11ot.program basis,
`
`in England,
`
`Australia, France, Canada, Sweden, Japan and West Germany.
`
`-Other pilot programs are planned to begin shortly in other
`
`countries.
`
`CBS believes that it is_now appropriate to adopt
`
`standards governing transmission of teletext.
`
`thus
`The system proposed herein is highly extensible,
`permitting system growth and innovation as the technology
`evolves. Moreover, teletext receivers, manufactured pur-
`
`suant
`
`to these standards, can be made compatible with later
`
`systems, such as videotex —- a complementary two-way informao
`
`tion system using a telephone set connection.
`
`The CBS field tests and analyses of the various tele-
`
`text systems, as described in Erhibit II, clearly indicate
`
`that the software-based, variable format system* proposed,
`
`a modification of the ANTIOPE system, is sufficiently
`
` *
`
`the position
`In a variable or asynchronous format system,
`of data on the television scanning line is independent of
`the position of that data on the display.
`
`'
`
`-7-
`
`.
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`O O
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`n 4
`
`....—p
`
`developed for immediate utilization and offers many inherent
`
`advantages over fixed format systems.* Moreover,
`
`the variable
`
`format is at the forefront of current international tele-
`
`communications technology. Further, CCITT (the international.
`
`,
`
`telecommunications organization) has endorsed software-based
`
`telecommunications systems for the proposed Integrated
`
`Services Digital Network model currently being planned.**
`
`In the United States, systematic development of tele-
`
`-text requires a common standard, which only the Commission
`
`can provide.*** Delay_now will only discourage the
`
`the position
`In a fixed or synchronous format system,
`*
`of data on the television scanning line bears a direct
`relationship with the position of the corresponding characters
`on the television receiver display. This dependence acts as
`'a restraint both on the creative use of the system and on its
`future compatibility with other systems, such as videotex.
`
`See, CCITT Study Group III Meeting Report, April l8-24,
`**
`1980, Geneva, Document T—28E.
`,
`
`CBS has participated actively in the industry activity
`***
`currently underway under the aegis of the Broadcast Television
`Systems Committee, Subcommittee on Teletext, which is being
`sponsored by EIA,
`looking towards a recommendation to the
`Commission of a single teletext standard.
`The Subcommittee
`has been very active and productive during the past year and
`a half of its existence, but is much behind schedule.
`The
`Subcommittee was to have completed its task by the first of
`January in order to arrive at a single teletext "standard.".
`CBS is concerned that unless a positive step is taken now,
`teletext may be denied to the American public for a long
`time to come.
`‘
`
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`
`Q.
`
`by Q
`
`substantial investment and coordination needed to launch
`teletext by encouraging the proliferation of incompatible
`
`systems. This will prove wasteful in the long run to broad-
`
`casters, viewers,
`
`information suppliers and receiver manu-
`
`-facturers alike.
`
`It is commonly recognized by manufacturers
`
`that the major portion of teletext decoder costs is in
`
`volume—sensitive integrated circuit chips. Consequently,
`
`broadcasters and viewers alike will benefit by prompt
`
`adoption of teletext rules and standards.
`
`CBS believes that
`
`after adoption of the proposed standards, teletekt receivers
`
`will be made available by manufacturers in sufficiently
`
`large quantities to reduce significantly the cost of integrated
`
`circuit chips,
`thus placing teletext within the means of the
`general public.* It can be anticipated, however,
`that
`
`prototype model decoders for field trials and marketing
`
`‘tests will become available almost
`
`immediately.
`
`Convinced of the public benefits to be derived from a
`
`carefully thought—out teletext system, CBS has engaged in an
`
`extensive program of experiments and testing at CBS laboratories
`
`and in the field. Test results are offered with this Petition.
`
`the other variable format system, is more complex.
`TELIDON,
`'
`However,
`the system proposed herein allows for future incorpora-
`tion of new features, such as those included in TELIDON, and can
`do so without making early teletext equipment obsolete.
`Indeed,
`the introduction of a practical teletext system will undoubtedl
`fuel consumer demand for increasing sophistication.
`-
`
`-9-
`
`'
`
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`

`
`s.
`
`css Tests.
`
`CBS designed its teletext experiments and field tests_
`
`in order to identify and propose a system which is as inherently
`
`.compatible and extensible as possible.
`
`CBS then extensively
`
`tested both principal teletext systems. Key engineering
`
`—personnel were assigned to this work,
`
`A variety of teletext
`
`formats were examined. widely different reception conditions
`
`"were located and tested.
`
`CBS tested all available systems sufficiently developed
`for widespread implementation.
`As discussed in Exhibit II,
`
`fully analyzed were (1) the synchronous, fixed format systems
`
`including various modifications;
`known as QEEFAX and ORACLE,
`and (25 the asynchronous, variable format system known as
`ANTIOPE. These systems were the only ones which had equipment
`
`available for CBS testing. Thus,
`
`the TELIDON system, also an
`
`asynchronous system, was not tested by CBS.
`
`Test transmissions were conducted under STAS issued by
`
`the FCC at the request of CBS. Tests were conducted at
`
`kMox—Tv St. Louis and on the css Television Network.
`
`In
`
`connection with the network authorization, additional field
`
`tests were conducted in the Los Angeles area using the
`
`'
`
`transmissions of KNXT. Detailed test results are set forth
`
`in Appendix’A to CBS’ annexed Engineering Statement (Exhibit II).
`
`-
`
`-104
`
`.4 I-’
`.‘_I.
`
`% g,
`
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`

`
`..—-.u-~n|?'!\.-n
`
`:-.t-.*..x=-.‘¢._..4%.»..«2'..v..
`
`..,
`
`Q .
`
`Transmissions for the KMOX—TV test consisted of teletext
`
`test pages and related test signals, decoded on European
`
`teletext equipment modified for the U.S. 525—1ine NTSC tele-
`
`vision system.
`
`Five different transmission rates were ema
`
`.ployed ranging from 3.7 megabits per second (Mb/s)
`
`to 6.2 Mb/s.
`
`Extensive field measurements were made throughout
`the
`_ KMOX~TV service area.
`KNXT transmissions tested teletext
`
`reception in the more mountainous Los Angeles terrain.
`
`Testing on the CBS Television Network examined the reliability
`
`of teletext transmissions over long distances.
`
`' C.
`
`' Transmission Standards
`
`In its evaluation of teletext systems, CBS also studied
`
`relevant engineering aspects of all systems.
`
`As a result of
`
`those studies, CBS proposes the following transmission
`
`standards.
`
`Bit rate.
`
`CBS proposes that a bit rate of 5.727272 Mb/s
`
`be specified as the United States transmission standard.
`
`CBS has tested a variety of bit rates, at both higher and
`
`lower levels than proposed.
`
`The highest fined bit rate
`
`possible would be preferable in the interest of spectrum
`
`‘conservation and access time. Nevertheless,
`
`the wide
`
`variety of reception conditions characteristic of the United
`
`‘States requires a slightly more conservative rate.
`
`CBS
`
`K...)
`
`-11-
`
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`

`
`O O
`
`.
`
`.
`
`-
`
`.
`
`'
`
`.
`
`k
`‘
`
`I
`
`...s'..‘..~..:
`
`believes that 5.727272 Mb/s offers a unique advantage.
`
`It
`
`~is a precise multiple of the television line frequency
`
`(364K) and bears a discrete fractional relationship to the
`
`color subcarrier (8/5sc). Thus,
`
`the color subcarrier
`
`.oscillator already in television receivers may be used as
`
`a very precise timing signal for teleteit, significantly
`reducing error rates.
`The Commission should be aware also
`
`that the 5.727272 Mb/s figure proposed herein has been
`
`tested and accepted in Japan, which utilizes the same
`
`television transmission standards that are employed in the
`
`United States.
`
`Vertical blanking interval lines.
`
`CBS has concluded
`
`that teletext signals having an amplitude of approximately
`
`.70 IRE units can be transmitted on VBI lines 15 and 16 without
`
`causing degradation in picture quality on television receivers.
`
`The same tests demonstrate that such transmission on lines
`
`10 through lfl causes some degradation to picture quality on
`
`sets manufactured before 1974.
`
`In the CBS tests in St.
`
`Louis, approximately 11 percent of such older receivers were
`
`_so affected in certain localities.
`
`CBS believes, however,
`
`that within a few years,
`
`lines 10 through lb will be suitable
`\
`
`for teletext,
`
`\
`
`Adaptive egualizer training signal;
`
`A generally accepted
`
`technique-for information or image correction in teletext
`
`transmission is the use of a compensating device in a teletext
`
`-12-
`
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`
`
`
`.
`
`c
`
`.
`
`A
`decoder or receiver termed a "time domain_equalizer."
`time domain equalizer can compensate for multipath reflec-
`
`tions which might otherwise cause erroneous decoding, Known
`
`for over 20 years, such devices only now are within reach
`‘ An equalizer device may
`correct the teletext signal alone; or correct both the
`
`.through integrated circuitry.
`
`teletext and full-picture signals.
`
`To this‘end, a "training
`
`I7
`
`signal, used to activate the equalizer, ought to be part of
`
`the transmission. However, it must first be determined
`
`whether such a training signal should be included in a non-
`
`variable portion of the teletext signal, or in a portion of
`the television synchronization waveform.
`CBS proposes to
`
`provide for the introduction of such a training'signa1 after
`
`its specific location has been determined;
`
`-13..
`
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`
`
`
`~
`
`. .
`
`.
`
`“ '
`
`V. Conclusions
`
`CBS’ field tests and comprehensive analyses set forth
`
`in Exhibit II clearly demonstrate that the variable format
`
`system possesses unmistakable advantages over the fixed
`
`‘
`
`format system for the following reasons:V
`
`A.
`
`The system is basically a software-based system
`
`and, as such,
`
`is highly extensible, permitting system growth
`
`‘and innovation as the technology evolves.’
`
`B.
`
`This technology will afford an extremely high,
`
`degree of compatibility between broadcast teletext and two-
`
`way, videotex system decoders..
`
`C.
`
`Equally significantly,
`
`the coding structure proposed.
`
`herein offers singular versatility.
`
`It is not a special,
`
`single-purpose language suited only to television broadcast
`
`signals. _Rather, it may be used without modification for
`
`)
`
`transmission'of information over many different types of
`
`transmission systems.
`
`CBS firmly believes that the state of the art of teletext
`is ripe for rulemaking.
`lhe benefits of broadcast teletext
`
`services are obvious. with the testing reported herein,
`
`issues-are now sharply focused.
`
`The Commission is presented
`
`with an Opportunity t0'app1y useful learning to practical and
`
`worthwhile public service.
`
`figs?
`
`_1u-
`
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`

`
`”
`
`Q ‘
`
`Petition for'Ru1emaking and adoption of the teletext rules and
`
`ACCORDINGLY, CBS requests expedited consideration of this
`
`standards proposed herein.
`
`Dated:
`
`Respectfully submitted,
`
`
`
`Its Attorneys
`
`-15-
`
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`
`“ I
`
`EXHIBIT 1,
`
`Proposed Rules
`
`
`
`\
`
`In compliance with Section l.U0l(c) of the Commission‘
`
`Rules,_CBS sets forth specifically the following as the subs
`
`stance of the rules proposed:
`
`(a) Section 73.681, which contains the definitions
`
`applicable to television technical standards, would be amended
`
`’by inserting following the definition of "synchronization"
`
`the following definition of teletextz
`
`A digital data system associated with a
`g "Teletext.
`broadcast signal for the transmission of information,
`intended primarily to display pages of text and pictorial
`material on the screen of suitably equipped receivers."
`
`(b) Subsection 73.682(a) §Transmission Standards)
`
`should be amended by adding the following new subparagraphs:
`
`"(2fl)(i) Teletext signals may be transmitted on specific'
`scanning lines in the vertical blanking interval or on
`all active picture scanning lines.
`'
`_
`
`"(24)(ii) Lines 10 through 16 of the vertical blanking
`interval may be used for the transmission of teletext.
`Lines 10-lfl may be used for the transmission of teletext
`upon an affirmative showing that, based on relevant
`. facts,
`including pulse amplitude level, no significant
`degradation will be caused to the program signal as
`viewed on home receivers.
`
`"(2fl)(iii) Teletext signals shall conform to Figure 18
`of Section 73.699.
`The system shall be a variable format,
`asynchronous system.
`The data bit rate for transmission
`shall be 5,727272 Mb/s (36fl
`times line frequency, 8/5 times
`color subcarrier frequency).
`The transmitted data shall
`be in the form of a data packet consisting of 36, 8-bit
`bytes arranged into a prefix and data block.
`The prefix
`may consist either of 5 bytes for vertical blanking
`interval applications or 8 bytes for full field teletext
`transmission applications.
`A code signifying the end of
`one display row and the start of another row may appear
`within the data block.
`
`PMC Exhibit 2053
`PMC Exhibit 2053
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`|PR2016-00753
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`"(2fl)(1v) A reference pulse for a decoder-associated
`adaptive equalizer filter, designed to improve the
`decoding of teletext signals, may be inserted in the
`vertical interval in conformance with Note 10 associated
`*with Figure 18.
`
`"(2fl)(v) Teletext signals shall cause no significant
`degradation.to any portion of the visual or aural signals
`nor produce emissions outside of the authorized television
`channel.
`
`"(2N)(v1) Transmission of visual emergency messages
`pursuant to Section 73.1250 shall take precedence and
`shall be cause for interrupting teletext transmission."
`
`‘(c) Section 73.699 (Engineering Charts) should be
`
`amended by adding as Figure 18:
`
`PMC Exhibit 2053
`PMC Exhibit 2053
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`Apple v. PMC
`|PR2016-00753
`IPR2016-00753
`Page 19
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`

`
`s
`
`l8_- . .
`
`
`
`_Sei:I‘ion 73.699 ‘FIG.
`
`'
`IIIIITE
`"""—""""“"'-"'--'-—""""" * — * ’ — — '—-"'-"""" ‘ * ” * ““"""""‘*
`|-Em
`.
`I-.— BROADCAST om mun -T->1
`
`1° _ _ - _ _ _ __.
`.
`
`'
`: :: '_' 6 In: M. u M”
`
`'_'-
`_.
`- " ';
`’
`3
`
`BLACK
`°"_--l_E-yfi__'—
`
`_
`__6 IRE units max.
`
`0,
`0-
`;
`
`3I
`
`d 5
`
`Basic Data
`
`Mp'”"d°
`I
`Binary '0' Iovol: O12 IIIE unit:
`sum; '1'
`level: 101:: ms unit: "“"5°-2°‘ I”
`
`
`
`Peal:-to-peak
`Data Anni itude
`(Data plus waveform ovorshooul
`
`DATA LEVELS
`
`10.5 10.32 ya’
`
`LINE
`TIMING
`
`REFERENCE
`
`
`
`.,,
`
`Iloriznntal
`Sync
`Pulse
`
`,.
`'
`»'o’:°o’:‘:'o‘ ¢°'°'
`.C I...O,..O.¢ BUFSI
`
`C‘ och sync“
`
`. * IMI1-amplitude point of
`first 0 to 1 transition
`
`DATA TIMING
`
`note:
`
`WM
`
`1. The otructuije sham above «slated en a variable format.
`arr aaynchronoua ayutua, Itlnusin a code aisnifyina the
`and oi’ can display row and the start oi’ another row
`may appear within the data black.
`. use an an rate in 5.127212 ID]: (363111. 8/5 x ‘s.c.) 3 16 bis
`. The taiatext signal consist: of 288 Binary Mu (pulse at no
`pulse) per teinvhion «canning line.
`oz-mt.
`:33 data signal in coded using non-retutn-toaero (IE2)
`'1.
`5. ‘lba ha-oadcnt data packet consists at 36‘8-bit byte:
`arranged law: a prefix and a data block.
`6. ‘the prefix has two opuonl:
`I110!"-D2‘¢fXlOf5§_y1gt:C5C33IPl P2
`1oo3prefixoi’3by'¢cI: cscsumn nczm.
`rot vertical interval applications the short prefix it
`used.
`P, Grand Ploftprcwnt packet add:-cu. continuity index
`and packet length.
`‘the clock nan-in us»: (cs) 1: apecmoa at 10101010.
`‘mo trains code in npccifled as follows:
`‘ when used with abort p‘nfixz(3l. ooioooox
`men used with long prefix: (& 11100111
`‘me when an shaped to limit apectral energy to th:
`nuninal. video husband.
`,
`10. A special who d¢ai3x':ed,u 3 training usual for an adaptive
`equaliser in a retain: my be transmitted on an othenviu
`umued Lina betveen 1o-15 inclusive. The pulaq in shaped to
`nan spectral «nary to tho uuinai video buehaad.
`
`.
`
`3‘!
`
`9.
`
`
`
`PMC Exhibit 2053
`PMC Exhibit 2053
`Apple v. PMC
`Apple v.
`|PR2016-00753
`IPR2016-00753
`Page 20
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`55 7
`- ca:
`
`EXHIBIT II
`
`ENGINEERING STATEMENT IN SUPPORT OF
`
`CBS PETITION FOR RUIE MAKING
`
`FOR ATEIETEXT SYSTEM
`
`July 21, 1980
`
`submitted by:
`
`‘.
`ILA. O'Connor Mat,
`
`Reviewed by: W.C. Nicholls \;f0V
`
`Approved by:
`
`J.A. Flaherty S
`
`PMC Exhibit 2053
`PMC Exhibit 2053
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`|PR2016-00753
`IPR2016-00753
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`

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`go I
`I
`
`EXHIBIT .II
`
`Q
`
`ENGINEERING STATEMENT IN SUPPORT OF
`CBS PETITION FOR RULE MAKING
`FOR A TELETEXT SYSTEM
`
`I.
`
`Page No .
`1
`
`II. BASIC 1
`
`III.
`
`
`RATIONAIE FOR SYSTEM SELECTION....................
`
`Iv.
`
`PROPOSEDDATA BIT
`
`Iv.
`
`PRONOSEDVERTICAL INTERVAL
`
`VI.
`
`PROVISION FOR ADAPTIVE EQUALIZER TRAINING SIGNAL. .
`
`VII. RESPONSETOSTACONDITIONS.......................;
`
`VIII. CONCLUSION......'.......'......................'.....
`
`3
`
`6
`
`8
`
`9
`
`10
`
`20
`
`
` APPENDICES
`
`
`
`
`Appendix B - "Broadcast Teletext System Standard" —— the complete
`I‘
`I
`system description.
`3
`
`
`Appendix A - Reports on the CBS field tests, Phases 1, 2 and 3.
`
`PMC Exhibit 2053
`PMC Exhibit 2053
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`IPR2016-00753
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`
`
`
`i. Imrnonucrzon
`
`1. von March 9, 1979, The Federal Comunications Commission granted to
`
`CBS Inc.
`
`("CBS") Special Temporary Authority (STA) to include experimental
`
`teletext signals within the vertical blanking interval of transmissions of
`
`its Owned Station KMOX-TV St. Louis, M0.
`
`The test transmissions consisted
`
`of teletext test pages and related test signals intended for decoding on
`
`equipment modified for the U.S. 525-line television system that was
`
`supplied by British and French broadcasting entities. This equipment was
`
`‘designed in accord with the teletext systems developed in those countries.
`
`Test transmissions of both systems were conducted at five different trans~
`
`mission rates ranging from 3.7 megabits per second (Mb/s) to 6.2 Mb/s.
`
`Extensive field measurements were made throughout the KMOX-TV service area.
`
`2.
`
`On November 9, 1979 the Commission granted to CBS another STA to transmit
`
`teletext test signals in the vertical blanking interval of programs trans-
`mitted over the CBS Television Network, in order to determine the reliability
`of such transmissions over long distances.
`In accordance with this STA
`
`which covered radiation of the test transmissions by any CBS owned or
`
`affiliated station, additional field measurements were made in the Los Angeles
`
`area using the test transmissions over CBS Owned Station KNXT.
`
`3. Details on all of these tests are attached hereto as Appendix A.
`
`:2
`II.
`
`BASIC srsrsn DIFEERENCES
`
`h.
`
`The British teletext system (CEEFAX/ORACLE) is a synchronous, or fixed
`
`format system, in whichthe position of data on the television scanning line
`
`bears a direct relationship with the position of the corresponding display
`
`PMC Exhibit 2053
`PMC Exhibit 2053
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`|PR2016-00753
`IPR2016-00753
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`
`jlbr ‘lb
`
`— é -
`
`.
`
`‘I'll’
`
`characters on the presentation on the television receiver.
`
`In the
`
`initial phase of the tests over KMOX-TV St} Louis the equipment supplied
`
`involved a one-to-one relationship between the television scanning_1ine
`
`and the row presentation, with a display row presentation of 32 characters.
`
`In subsequent tests a "geared" system was used to provide a_display row
`
`presentation of #0 characters per row.
`
`A fixed relationship between
`
`television line and display row still existed but not on a one-to~one
`
`basis. This "gearing" feature did.not alter the basic synchronous or
`
`fixed format concept.
`
`5.
`
`The French teletext system (ANTIOPE) is an asynchronous, or variable
`
`format system, in which there is ng relationship between the data on a
`television scanning line and the position of that data on the display.
`
`In this type of system there is no dependence
`
`on the television line
`
`structure for the position of the displayed data. Although these tests did
`
`not include the Canadian teletext system,
`
`(TELIDON) this system is also an
`
`asynchronous system, similar in many respects to the ANTIOPE system, but
`
`with significant differences relating to the approach to graphics.
`
`(TELIDON is discussed further herein).
`
`6. Subsequent to these field tests an enhanced version of CEEFnX/ORACLE
`
`was described which, in theory, could provide the same features as the
`
`“ANTIORE system that had been tested. This enhanced system remained a
`
`fixed format system, however, for the provision of basic teletext. As in
`
`most instances of this type there are advantages and disadvantages to both
`
`approaches
`
`and a decision has to be made, on balance, of the better approach.
`
`PMC Exhibit 2053
`PMC Exhibit 2053
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`|PR2016-00753
`IPR2016-00753
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`0-
`
`0'
`
`III.
`
`RATIONALE FOR SYSTEM SELECTION
`
`7.
`
`The CBS engineering team-working on the teletext project familiar-
`
`ized itself with the various teletext systems through its dwn first-band
`
`test_prcgram in St. Louis and in Los Angeles.
`
`The team also became
`
`familiar with the TELIDON system. Additionally, a special intensive
`
`comparative presentation was recently conducted by the two system pro~
`
`ponents for CBS technical personnel. This presentation consisted of a
`
`comprehensive coparative analysis of the "Polyglot C" system, and the
`
`ANTIOPE system. As a result of these studies it was concluded that all
`
`three of the major systems are capable of providing, at some point in
`time, virtually the same_type of features. All systems are potentially
`capable of:
`tlphanumericsg high resolution graphics; and the same long list
`
`of attributes, handled either on a serial ("spacing") basis, or on a_paral1el
`
`("non—spacing") basis; as well as free-form data transmission.
`
`8. However, each system proposes to accomplish this goal in a somewhat
`
`different manner.
`
`The fundamental difference, as indicated earlier, is the
`
`concept of a fixed format system, as opposed to the concept of the variable
`
`format system. Each system has advantages and disadvantages.
`
`It is the
`
`Judgment of the CBS technical experts that, on balance,
`
`the variable format
`
`approach provides a better base for extensibility,
`
`than does the fixed format
`
`approach, or the hybrid "Polyglot C" system.
`
`By extensibility is meant
`
`the ease with which the basic system may be adapted to the changing tech-
`
`‘ nology. The ANTIOPE and the TELIDON systems employ the variable format.
`
`The proposed Polyglot C system in its "unhook" mode -~ the mode that would
`
`be used for all extensible functions beyond parallel attributes and
`
`PMC Exhibit 2053
`PMC Exhibit 2053
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`|PR2016-00753
`IPR2016-00753
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`go
`
`an
`
`Dynamically Refinable Character Sets (DRCS) would also be, basically,
`
`a variable format system. However, ‘for the provision of basic teletext,
`
`
`the fixed format would be retained.
`
`(One reason for this is, of course,
`
`to maintain compatibility with existing decoders.
`
`It is estimated that
`
`there will be about 100,000 such