application/cont Number: 90/006, 800
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`Art Unit: 3992
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`Page @
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`ATTACHMENT #1: The “CBS Petition.” *
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`PMC Exhibit 2053
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`ATTACHMENT #1: The “CBS Petition.” *
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`PMC Exhibit 2053
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`.¢a
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`CBee
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`CBS tnc.. S1 West $2 Street
`NewYork, New York 10019
`(212) 975-4321
`Law Oepartment
`
`ee ORiciNa
`
`.
`
`"
`
`Dear Mr. Tricarico:
`
`ni
`en HAL.
`july a 1080
`|
`
`ay
`
`|
`
`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) 975-8422.
`
`Very truly yours,
`
`Melia Be.
`Michael Rose
`Attorney
`Honorable William J. Tricarico
`
`Secretary
`Federal Communications Commission
`1919 "M" Street, N.W,
`Washington, D.C.
`20554
`
`,
`
`.
`
`x
`
`/
`/
`(i.
`
`.
`
`Aty
`
`PMC Exhibit 2053
`PMC Exhibit 2053
`Apple v. PMC
`Apple v. PMC
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`Lee
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`RECEIVED .
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`File,
`
`*
`
`OFFICE OF THE SECRETARYJUL 3 u Ieou
`‘
`Before the
`:
`Federal Communications Commission
`hbigs
`20554
`SOFIA WE Rg Biuiilane 4
`Washington, D.C.
`
`
`
`-
`
`-
`
`*
`.
`.
`ECEIVEn
`In re
`JUL 28 1990
`Amendment of: Part 73, Subpart E of )
`RM No.
`ao
`the Rules Governing Television
`)
`Ore;
`56 he
`Broadcast Stations to Authorize
`
`Delevent 5pe1h
`ee 3 a BPATOAMWererany
`
`
`7
`. eee
`
`)
`
`.
`
`. R
`
`TO:
`
`The Commission
`
`PETITION FOR RULEMAKING
`
`CBS Inc.
`
`("CBS"), pursuant to Section 1.401 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 time. to
`
`\
`
`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(g), Communications Act of 1934, as amended.
`
`PMC Exhibit 2053
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`@@ @.
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`.tet
`
`I.
`
`Introduction
`
`Teletext is the generic term for systems that transmit
`
`alphanumeric information (letters, numbers,. characters) to
`
`The information is sent by
`the home television receiver.
`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 hand-held 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.
`
`the teletext
`As is more fully explained in this Petition,
`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 -- 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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`
`
`II. Statement Pursuant to Section 73. 682(b)
`
`of the Commission'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 "Téletext"; 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 I, attached hereto.
`
`B.
`
`The proposed changes will have no effect on other
`
`transmission standards that have been adopted by the Commission
`
`for television broadcast stations; the proposed changes are
`
`entirely additive.
`
`As more fully described in the Engineering Statement,
`Cc.
`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.
`
`The proposed changes and modifications of standards
`D.
`will neither affect operation nor contribute to obsolescence
`
`of television receivers.
`
`PMC Exhibit 2053
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`eeweek
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`Those stations opting to transmit local teletext
`E.
`would require a teletext encoder, a page storage device and a
`
`multiplexer. to insert teletext into the television signal.
`
`For the reasons set forth below, and in the attached
`F.
`the proposed teletext system and the associated
`exhibits,
`changes and modifications in the adopted standards will
`
`.serve the public interest, convenience and necessity.
`
`m4.
`
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`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 informationare 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-held 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
`
`the first nine lines, are employed in synchroniz-—
`this bar,
`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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`©}
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`‘
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`B.
`
`How it Serves
`
`‘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
`‘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 flexible 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 volume~sensitive price of
`
`-decoders.
`
`PMC Exhibit 2053
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`
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`The public interest will be served by prompt adoption
`
`IV.
`
`A United States Teletext Standard
`
`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 pilot. 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 informa-
`
`tion system using a telephone set connection.
`
`The CBS field tests and analyses of the various tele-
`
`text systems, as described in Exhibit 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.
`
`'
`
`-T-
`
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`+eeeee
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`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 18-2h,
`##®
`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.
`
`-8-
`
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`encntelec*
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`eeOo.- )
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`,
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`|
`
`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, teletext receivers
`
`will be made available by manufacturers in sufficiently
`
`large quantities to reduce significantly the cost of integrated
`
`thus placing teletext within the means of the
`circuit chips,
`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 undoubtedly
`
`fuel consumer demand for increasing sophistication.
`
`~9-
`
`-
`
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`18erebebenenst?
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`|
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`;
`
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`
`—
`
`:
`
`B.
`
`CBSTests
`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 IT,
`fully analyzed were (1) the synchronous, fixed format systems
`
`including various modifications;
`known as CEEFAX and ORACLE,
`and (2)
`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 CBS 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).
`
`-10-
`
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`1oestaeeepean
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`
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`1achfan’Gaiveda.ustedes
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`Ce
`
`@ .
`
`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=line NTSC tele-
`
`vision system.
`
`Five different transmission rates were em=
`
`-ployed ranging from 3.7 megabits per second (Mb/s)
`
`to 6.2 Mb/s.
`
`the
`Extensive field measurements were made throughout
`. 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.
`
`- ©.
`
`Transmission Standards
`
`In its evaluation of teletext systems, CBS also studied
`
`relevant éngineering 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 fixed 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
`
`J
`
`-ll-
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`S @
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`}
`
`¢
`
`weedante
`
`It
`
`believes that 5.727272 Mb/s offers a unique advantage.
`‘is a precise multiple of the television line frequency
`(364H) and bears a discrete fractional relationship to the
`color subcarrier (8/5sc). Thus,
`the color subcarrier
`oscillatoralready in television receiversmay be used as
`a very precise timing signal for teletext, significantly
`reducing errorrates.
`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
`10 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 14 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 wére
`sO affected in certain localities.
`CBS believes, however,
`that within a few years,
`lines 10 through 14 will be suitable
`for teletext.
`\
`
`Adaptive equalizer training signal.
`
`A generally accepted
`
`technique for information or image correction in teletext
`transmission is the use of a compensating device ina teletext
`
`-]2-
`
`PMC Exhibit 2053
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`©
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`-
`
`a
`
`’
`
`decoder or receiver termed a "time domain equalizer."
`A
`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
`. through integrated circuitry. An equalizer device may
`correct the teletext signal alone, or correct both the
`
`teletext and full-picture signals.
`
`To this‘end, a "training"
`
`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 signal after
`its specific location has been determined.
`
`~13-
`
`PMC Exhibit 2053
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`‘
`
`@ ®
`
`.
`
`‘
`
`NeeelneeeeOeaneaERENT
` ‘SpericiadnBob,seeeae
`
`V. Conclusions
`
`useee
`
`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:
`
`A.
`The system is basically a software-based system
`and, as such,
`is highly extensible, permitting system growth
`“and innovation as the technology evolves. |
`
`This technology will afford an extremely high
`B.
`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 belleves that the state of the art of teletext.
`is ripe for rulemaking. The benefits of broadcast teletext
`services are obvious. With the testing reported herein,
`issues are now sharply focused.
`The Commission is presented
`
`with an opportunity to ‘apply useful learning to practical and
`
`worthwhile public service.
`
`-14-
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`ee
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`@ ‘
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`ACCORDINGLY, CBS requests expedited consideration of this
`
`standards proposed herein.
`
`Petition for Rulemaking and adoption of the teletext rules and
` ichael Rose
`
`Respectfully submitted,
`
`CBS Inc.
`
`Its Attorneys
`
`Dated: Lp Le M460
`
`-15-
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`@ @
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`. @ ‘
`
`EXHIBIT I ,
`
`Proposed Rules
`
`
`
`;
`
`In compliance with Section 1.401(c) of the Commissiont s
`Rules, CBS sets forth specifically the following as the sub-
`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 teletext:
`
`A digital data system associated with a
`- "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."
`
`(Transmission Standards)
`(b) Subsection 73.682(a)
`should be amended by adding the following new subparagraphs:
`
`"(24)(1) Teletext signals may be transmitted on specific:
`scanning lines in the vertical blanking interval oron
`all active picture scanning lines.
`;
`"(24)(1i) Lines 10 through 16 of the vertical blanking
`interval may be used for the transmission of teletext.
`Lines 10-14 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.
`
`"(24)(ii1) 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 (364 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
`Apple v. PMC
`Apple v. PMC
`IPR2016-00753
`IPR2016-00753
`Page 18
`Page 18
`
`WJ
`
`
`
`
`
`"(24)(iv) 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.
`"(24)(v) Teletext signals shall cause no significant
`degradation to any portion of the visual or aural signals
`nor produce emissions outside of the authorizedtelevision
`channel.
`
`"(24)(vi) Transmission of visual emergency messages
`pursuant to Section 73.1250 shall take precedence and
`shall be cause for interrupting teletext transmission."
`
`(ce) Section 73.699 (Engineering Charts) should be
`
`amended by adding as Figure 18:
`
`Sp
`
`|
`
`>.
`
`PMC Exhibit 2053
`PMC Exhibit 2053
`Apple v. PMC
`Apple v. PMC
`IPR2016-00753
`IPR2016-00753
`Page 19
`Page 19
`
`
`
`
`
`}e— BROADCAST DATA PACKETxmie
`EEA ta mua
`
`oe
`See. _. _. _ 6 IRE units max,
`
`0—-~—-—-———-
`
`REUNITS
`
`LEVEL
`
`
`
`Binary °0°
`
`
`
`Basic Data
`O22 IRE units
`|
`Anplitude
`
`level:
`Binary °O"
`7042 IRE unitsH+———— 0.286ys
`level:
`Binary °1°
`
`Peak-to-peak
`Oata Amplitude
`(Data plus waveform overshoots)
`
`= 6 URE units max.
`
`DATA LEVELS
`
`10.5 20.32 ps’
`
`LINE
`TIMING
`
`REFERENCE | Clock Synch |
`
`Hori zontal
`Sync
`Pulse
`
`
`
`- & Halfeamplitude point of
`first 0 to 1 transition
`DATA TIMING
`
`Note:
`
`i.
`
`The structure shown above related to a variable foruat
`or asynchronous system, vherein a code signifying the
`end of one display row and the start of another row
`tay appear within the data block.
`« The date bit rate 10 5.727272 Wo/a (36uaH, 8/5 x B.C.) + 16 b/s
`« The taletexst eigoal consists of 283 binary bits (pulse or no
`pulse) per television scanning line.
`- The data signal ie coded using non-return-to-rero (NRZ)
`format.
`« The brosdcast deta packet consists of 36°8-bit bytes
`arrenged into: a prefix and « data block.
`» the prefix has tvo options:
`CH CS BI Pl P2
`short prefix of 5 bytes:
`03 C5 B2 Pl P2 P} CI PL
`loog prefix of 8 bytes:
`For vertical isterval applications the short prefix is
`used,
`®, CI and PLrepresent packet address, continuity index
`and packet length.
`+ The clock run-in signal (C6) is specified as 1OLOLOL0.
`The framing code le specified as follows:
`“vheo used with short prefix: (BL) 00100001
`when used with long prefix:
`(B2) 12100112
`. The puloce are shaped to limit apectral energy to the
`naninal video baseband.
`.
`20.
`A special pulse designedas a training signal for on adaptive
`equalicer ip & receiver may be transmitted on an otherwiss
`unused Line between 10-24 inelueive.
`‘The pulse ts shaped to
`limit spectral energy to the nominal video baseband.
`;
`
`
`on
`
`PMC Exhibit 2053
`PMC Exhibit 2053
`Apple v. PMC
`Apple v.
`IPR2016-00753
`IPR2016-00753
`Page 20
`Page 20
`
`
`
`ENGINEERING STATEMENT IN SUPPORT OF
`
`CBS PETITION FOR RULE MAKING
`
`FOR A TELETEXT SYSTEM
`
`July 21, 1980
`
`\
`Submitted by: “R.A. O'Connor (Age.
`
`Reviewed by: W.C. Nicholls WO”
`Approved by:
`J.A. Flaherty §
`
`PMC Exhibit 2053
`PMC Exhibit 2053
`Apple v. PMC
`Apple v. PMC °
`IPR2016-00753
`IPR2016-00753
`Page 21
`Page 21
`
`
`
`@o
`.
`
`EXHIBIT IT
`
`oD
`
`ENGINEERING STATEMENT IN SUPPORT OF
`CBS PETITION FOR RULE MAKING
`FOR A TELETEXT SYSTEM
`
`I.
`
`INTRODUCTION....-.ccseeecscccccececevecsccesscaecs
`
`II.
`
`BASIC SYSTEM DIFFERENCES......cssseeccseecseeeseee
`
`III.
`
`RATIONAIE FOR SYSTEM SELECTION..........-- cevesees
`
`IV.
`“V.
`VI.
`
`PROPOSED DATA BIT RATE........ eee ee se eeence se eeee
`PROPOSED VERTICAL INTERVAL LINES.........000-000e.
`PROVISION FOR ADAPTIVE EQUALIZER TRAINING SIGNAL..
`
`ol
`
`1
`
`3
`
`6
`8
`9
`
`VII.
`RESPONSE TO STA CONDITIONS.........cseeseeeveacs 1s
`10
`VIII. CONCIUSION.....cscecscececececsceccececsceaeteree
`20
`
`
`
`
`
`
`
`Appendix B - “Broadcast Teletext System Standard" -~- the complete
`system description.
`‘
`
`APPENDICES
`
`Appendix A ~- Reports on the CBS field tests, Phases 1, 2 and 3.
`
` ;
`
`PMC Exhibit 2053
`PMC Exhibit 2053
`Apple v. PMC
`Apple v. PMC
`IPR2016-00753
`IPR2016-00753
`Page 22
`Page 22
`
`
`
`I.
`
`INTRODUCTION
`
`1.
`
`-Om March 9, 1979, The Federal Communications Conmission granted to
`
`("CBS") Special Temporary Authority (STA) to include experimental
`CBS Inc.
`teletext signals within the vertical blanking interval of transmissions of
`its Owned Station KMOX-TV St. Louis, Mo.
`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-IV 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.
`
`II.
`
`BASIC SYSTEM DIFFERENCES
`
`4.
`
`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
`Apple v. PMC
`Apple v. PMC
`IPR2016-00753
`IPR2016-00753
`Page 23
`Page 23
`
`
`
`eo.
`
`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 line
`
`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 40 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 no 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 CEEFAX/ORACLE
`
`was described which, in theory, could provide the same features as the
`““ANTTOPE 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
`Apple v. PMC
`Apple v. PMC
`IPR2016-00753
`IPR2016-00753
`Page 24
`Page 24
`
`
`
`eo
`
`> 6
`
`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 own first-hand
`
`test program 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 comparative 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: alphanumerics; high resolution graphics; and the same long list
`
`of attributes, handled either on a serial ("spacing") basis, or on a parallel
`
`("non-spacing") basis; as well as free-form data transmission.
`
`8. However, each system proposesto 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
`Apple v. PMC
`Apple v. PMC
`IPR2016-00753
`IPR2016-00753
`Page 25
`Page 25
`
`
`
`eo --
`
`Dynamically Refinable Character.Sets (DRCS) would also be, basically,
`a variable format systen. 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 decoders in service in the U.K. by the
`
`end of 1980.)
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