JPS5998306A - Video tape recorder - Google Patents

Video tape recorder

Info

Publication number
JPS5998306A
JPS5998306A JP20834582A JP20834582A JPS5998306A JP S5998306 A JPS5998306 A JP S5998306A JP 20834582 A JP20834582 A JP 20834582A JP 20834582 A JP20834582 A JP 20834582A JP S5998306 A JPS5998306 A JP S5998306A
Authority
JP
Japan
Prior art keywords
signal
circuit
data
supplied
video
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP20834582A
Other languages
Japanese (ja)
Other versions
JPH056724B2 (en
Inventor
Akihisa Osawa
大沢　章久
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP20834582A priority Critical patent/JPS5998306A/en
Priority to CA000441083A priority patent/CA1291261C/en
Priority to US06/551,022 priority patent/US4942488A/en
Priority to AU21567/83A priority patent/AU564386B2/en
Priority to DE19833342520 priority patent/DE3342520A1/en
Priority to NL8304046A priority patent/NL192967C/en
Priority to GB08331362A priority patent/GB2132812B/en
Priority to IT23902/83A priority patent/IT1169143B/en
Priority to FR838318886A priority patent/FR2536932B1/en
Publication of JPS5998306A publication Critical patent/JPS5998306A/en
Priority to CA000615631A priority patent/CA1291259C/en
Publication of JPH056724B2 publication Critical patent/JPH056724B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00188—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91328—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • H04N2005/91335—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a watermark

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To know the number of times of screening of a video tape by recording the number of times of reproduction in the head part of a video tape, and thereafter, reproducing a program signal. CONSTITUTION:A video signal from an input terminal 2 is supplied to a data signal gate circuit 3 and also is supplied to a synchronization separating circuit 4, a vertical synchronizing signal obtained in this synchronization separating circuit 4 is supplied to a data gate pulse signal generating circuit 5, and a data gate pulse signal synchronizing with the vertical synchronizing signal is obtained. The data gate pulse signal obtained in the output side of this generating circuit 5 is supplied to the data signal gate circuit 3 as a gate signal, and also a horizontal synchronizing signal obtained in the synchronization separating circuit 4 is supplied to a data clock signal oscillating circuit 6 as a synchronizing signal, so that this oscillating circuit 6 oscillates by synchronizing with the horizontal synchronizing signal. An output signal of the data signal gate circuit 3 is supplied to, for instance, a 16 bit shift register 7 in accordance with a data clock signal from the data clock signal oscillating circuit 6.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はビデオプロジェクタ−を使用したビデオシアタ
ーの映像信号源として使用して好適なビデオテープレコ
ーダ（以下ＶＴＲと称す。）に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a video tape recorder (hereinafter referred to as VTR) suitable for use as a video signal source for a video theater using a video projector.

背景技術とその問題点 先にビデオプロジェクターを使用したビデオシアターが
提案されている。このビデオシアターはビデオプロジェ
クターにより映画を上映する映画館で、従来のフィルム
に依る映画館に比較し、観客に合せたきめ細かな上映演
出ができ且つ運営経費等が大幅に安くなる等の利益があ
る。このビデオシアターで使用されるビデオプロジェク
タ−の映像信号源は一般にＶＴＲであり、このＶＴＲに
はビデオテープに所望の番組が記録されたビデオカセッ
トが使用されている。Background technology and its problems A video theater using a video projector has been proposed. This video theater is a movie theater that shows movies using a video projector, and compared to movie theaters that use conventional film, it has the advantage of being able to provide detailed screening performances tailored to the audience and significantly reducing operating expenses. . The video signal source of the video projector used in the video theater is generally a VTR, and the VTR uses a video cassette on which a desired program is recorded on videotape.

ところでビデオチー／の記録内容は映画フィルムと異な
り、一般に極めて簡単に複写できるので盗複写される處
れがあり１番組の制作者（版権者をも含めて）側から所
望の番組が記録されたビデオテープを安心して供給でき
ない不都合かあ−った。By the way, unlike movie film, the recorded content of video clips is generally very easy to copy, so there is a risk of theft and copying. There was an inconvenience in not being able to supply tape with confidence.

発明の目的 本発明は斯る点に鑑みビデオテープの上映回数を知るこ
とができ、盗複写行為が行なわれたかどうかの手掛りを
得ることができる様にしたものである。OBJECTS OF THE INVENTION In view of the above, it is an object of the present invention to make it possible to know the number of times a videotape has been shown, and to obtain a clue as to whether or not an act of copying has been committed.

発明の概要 本発明はビデオテープの頭部に再生回数を記録した後に
番組信号を再生する様にＶＴＲで、本発明に依ればビデ
オテープの再生回数を知ることができこれにより盗複写
行為が行われたかどうかの手掛りを得ることができる。Summary of the Invention The present invention is a VTR in which the number of plays is recorded at the beginning of the video tape and then the program signal is played back. You can get a clue as to whether it has been done or not.

実施例 以下図面を参照しながら本発明ビデオヂープレコーダの
一実施例につき説明しよう。Embodiment Hereinafter, one embodiment of the video recorder of the present invention will be described with reference to the drawings.

本例に於いてはビデオシアターのビデオプロジェクタ−
の映像信号源を得るＶＴＲに使用するビデオテープ（１
）は第１図に示す如くテープの頭の′数１０′秒間走行
部をデータ記録部（１ａ）とし、その後所望の番組が記
録されている番組信号記録部（１ｂ）とする如くする。In this example, a video projector in a video theater
A videotape (1
), as shown in FIG. 1, the running section for several tens of seconds at the beginning of the tape is used as a data recording section (1a), and thereafter is set as a program signal recording section (1b) in which a desired program is recorded.

このデータ記録部（１ａ）に於けるデータは音声及び映
像画面に影響を与え１工い様にする為映像信号の垂直プ
ランキン１グ期間に記録する如くする。本例に於いては
このデータ記録部（１ａ）にこのビデオテープｆｉｌの
再生回数をデジタル信号で記録する如くする。The data in this data recording section (1a) is recorded during one vertical planking period of the video signal in order to affect the audio and video screen and make it seem like a single step. In this example, the data recording section (1a) records the number of times the video tape file has been played back as a digital signal.

又本例に依るＶＴＲはマイコンに依り制御される如く構
成されており、この配給されたビデオテープ（１）を再
生するときは第２図に示すフローチャートの如く制御さ
れる。即ちこのビデオテープ（１）が装填されたビデオ
カセットをＶＴＲのカセット挿入部に挿入したときは、
先ずＶＴＲは巻戻し状態となり、このビデオテープ（１
１０頭部まで巻戻し、このビデオテープ（１）の頭部（
テープトップ）を確認したときはＶＴＲは再生読み取り
状態となる。The VTR according to this embodiment is constructed to be controlled by a microcomputer, and when playing back the distributed videotape (1), it is controlled as shown in the flow chart shown in FIG. That is, when a video cassette loaded with this video tape (1) is inserted into the cassette insertion section of a VTR,
First, the VTR goes into rewind mode, and this videotape (1
Rewind to head 10 and rewind the head of this videotape (1) (
When the top of the tape is confirmed, the VTR enters the playback/reading state.

この場合再生信号は例えば第３図に示す映像信号入力端
子＋２）　＊供給される。第３図に一於いてはこの入力
端子（２）よりの映像信号をデータ信号ゲート回路（３
）に供給すると共に同期分離回路（４）に供給し。In this case, the reproduced signal is supplied, for example, to the video signal input terminal +2) shown in FIG. In Fig. 3, the video signal from this input terminal (2) is connected to the data signal gate circuit (3).
) and also to the synchronous separation circuit (4).

この同期分離回路（４）に得られる垂直同期信号をデー
タゲートパルス信号発生回路（５）に供給し、垂直同期
信号に同期したデータゲートパルス信号を得る如くし、
このデータゲートパルス信号発生回路（５）の出力側に
得られるデータゲートパルス信号をデータ信号ゲート回
路（３）にゲート信号として供給する。又同期分離回路
（４）に得られる水平同期信号をデータクロック信号発
振回路（６）に同期信号として供給し、このデータクロ
ック信号発振回路（６）を水平同期信号に同期し【発振
する如くする。データ信号ゲート回路（３）の出力信号
を例えば１６ビツトシフトレジスタ（力にデータクロッ
ク信号発振回路（６）よりのデータクロック信号に従っ
て供給する如くする。又こ０１６ビツトシフトレジスタ
（７）の出力信号を１６ビツトラッチ回路（８）に供給
し、データゲートパルス信２号発生回路（５）よりのデ
ータゲートパルス信号に従ってラッチする如する。この
１６ビツトラッチ回路（８）の出力信号をデコーダ回路
（９）を介して表示装置ｕＩに魂吟し、ビデオテープ（
１）のデータ記録部（１ａ）に記録されているこのビデ
オテープｉｌｌの現在までの再生回数を表示する如くす
る。The vertical synchronization signal obtained by the synchronization separation circuit (4) is supplied to the data gate pulse signal generation circuit (5) to obtain a data gate pulse signal synchronized with the vertical synchronization signal,
The data gate pulse signal obtained at the output side of the data gate pulse signal generation circuit (5) is supplied to the data signal gate circuit (3) as a gate signal. Further, the horizontal synchronization signal obtained by the synchronization separation circuit (4) is supplied as a synchronization signal to the data clock signal oscillation circuit (6), and the data clock signal oscillation circuit (6) is synchronized with the horizontal synchronization signal so that it oscillates. . The output signal of the data signal gate circuit (3) is supplied to, for example, a 16-bit shift register (input) according to the data clock signal from the data clock signal oscillation circuit (6). is supplied to the 16-bit latch circuit (8) and latched according to the data gate pulse signal from the data gate pulse signal generation circuit (5).The output signal of this 16-bit latch circuit (8) is supplied to the decoder circuit (9). to the display device uI via the videotape (
The number of times this videotape ill recorded in the data recording section (1a) of 1) has been played up to now is displayed.

このデータ記録部（１ａ）の再生。読み取りが終ったと
きは再びＶＴＲは巻戻し状態となり、ビデオテープ（１
）の所定位置例えばテープトップまで巻戻し、その後こ
のＶＴＲを記録状態とし、ビデオテープｉｌｌのデータ
記録部（１ａ）に以下に述べる第３図の記録信号出力端
子ａυに得られる信号を記録する。即ち第３図に於いて
は１６ビツトラッチ回路（８）の出力信号を１０進数で
１１パに対応するデジタル信号を付加する＋１回路ａ２
を介して１６ビツトシフトレジスタαｙに供給する。又
第３図に於いて圓は映像信号の垂直及び水平同期信号を
発生する同期信号発生回路を示し、この同期信号発生回
路側の複合同期信号出力端子（１４ａ）に得られる複合
同期信号を加算回路（１９の一方の入力端子に供給し、
又この同期信号発生回路Ｉの垂直同期信号出力端子（１
４Ｖ）に得られる垂直同期信号をデ・−タゲートパルス
信号発生回路ｕｅに供給し、垂直同期信号に同期した垂
直ブランキング期間のデータゲートパルス信号を得る類
クシ、このデータゲートパルス信号に従って１６ビツト
シフトレジスタ０にデー１５’信号を供給する如くする
。又この同期信号発生回路Ｉの水平同期信号出力端子（
１４Ｈ）に得られる水平同期信号をデータクロック信号
発振回路ａ７）に同期信号として供給し、こ、のデータ
クロック信号発振回路ａｎを水平同期信号に同期して発
振する如くする。１６ビツトシフ・トレジスタ（１１の
出力信号をパラレル信号をシリアル信号に変換するパラ
レル−シリアル変換回路ｕ稀に供給し、データクロック
信号に従ってパラレル−シリアル変換し、このパラレル
−シリアル変換回路ａ印の出力側に得られるシリアル信
号をデータ信号ゲート回路ａｌを介して加算回路１！１
９の他方の入力端子に供給する。この場合データ信号ゲ
ート回路（Ｉはデータゲートパルス信号発生回路四より
のデータゲートパルス信号により制御される如くなされ
ている。Reproduction of this data recording section (1a). When reading is finished, the VTR goes into rewind mode again, and the videotape (1
) is rewound to a predetermined position, for example, to the top of the tape, and then this VTR is put into a recording state, and the signal obtained at the recording signal output terminal aυ of FIG. 3, which will be described below, is recorded in the data recording section (1a) of the video tape ill. That is, in FIG. 3, +1 circuit a2 adds a digital signal corresponding to 11 decimal numbers to the output signal of the 16-bit latch circuit (8).
The signal is supplied to the 16-bit shift register αy via the 16-bit shift register αy. In Fig. 3, the circle indicates a synchronization signal generation circuit that generates vertical and horizontal synchronization signals of the video signal, and the composite synchronization signal obtained at the composite synchronization signal output terminal (14a) on the side of this synchronization signal generation circuit is added. circuit (supplied to one input terminal of 19,
Also, the vertical synchronizing signal output terminal (1
4V) is supplied to the data gate pulse signal generation circuit ue to obtain a data gate pulse signal for the vertical blanking period synchronized with the vertical synchronization signal. A data 15' signal is supplied to bit shift register 0. Also, the horizontal synchronizing signal output terminal of this synchronizing signal generating circuit I (
The horizontal synchronization signal obtained in step 14H) is supplied as a synchronization signal to the data clock signal oscillation circuit a7), so that the data clock signal oscillation circuit an is oscillated in synchronization with the horizontal synchronization signal. 16-bit shift register (parallel-to-serial conversion circuit U that converts the output signal from parallel signal to serial signal) The serial signal obtained in the adder circuit 1!1 is passed through the data signal gate circuit al.
9 to the other input terminal. In this case, the data signal gate circuit (I) is controlled by a data gate pulse signal from data gate pulse signal generating circuit 4.

この加算回路Ｑ９の出力側に得られる映像信号の垂直ブ
ランキング期間のデータゲートパルス信号の期間に現在
の再生回数に６＋１”されたデジタル信号が加算された
信号が記録信号出力端チェに得られ、これがビデオテー
プ（１）のデータ記録部（ｌａ）に記録される。この再
生回数の記録が終了した後、このＶＴＲは記録状態が解
除され、再生状態となり番組信号を再生する如くなされ
る。その後この番組信号をプロジェクタ−により上映す
る如（する。During the period of the data gate pulse signal in the vertical blanking period of the video signal obtained at the output side of the adder circuit Q9, a signal obtained by adding a digital signal obtained by adding 6+1'' to the current number of reproductions is obtained at the recording signal output end Che. , and this is recorded in the data recording section (la) of the video tape (1). After the recording of the number of reproductions is completed, the recording state of the VTR is canceled, and the VTR enters the reproduction state to play back the program signal. This program signal is then displayed on a projector.

本発明は上述の如（構成されているので配給したビデオ
テープ（１）を回収したときにこのデータ記録部（１ａ
）の再生回数を読みだせば契約による再生回数の通りな
のか誤差があるのかを知ることができる。契約による回
数以上のときは盗複写行為等をチェックする手掛りとす
ることができる。Since the present invention is configured as described above, when the distributed videotape (1) is collected, this data recording section (1a
), you can find out whether the number of views is as specified in the contract or if there is an error. If the number of copies exceeds the number specified in the contract, it can be used as a clue to check for theft and copying.

尚本発明は上述実施例に限らず本発明の要旨を逸脱する
ことなくその他種々の構成が取り得ることは勿論である
。It goes without saying that the present invention is not limited to the above-described embodiments, and can take various other configurations without departing from the gist of the present invention.

発明の効果 以上述べた如く本発明に依ればビデオテープの再生回数
を知ることができ盗複写行為等が行なわれたかどうかの
手掛りを得ることができる。Effects of the Invention As described above, according to the present invention, it is possible to know the number of times a video tape has been played, and to obtain a clue as to whether or not an act of copying has been committed.

【図面の簡単な説明】[Brief explanation of drawings]

第１図及び第２図は夫々本発明ビデオテープレコーダの
一実施例の説明に供する線図、第３図は本発明ビデオテ
ープレコーダの一実施例の要部を示す構成図である。 （１１はビデオテープ、（１ａ）はデータ記録部、（１
ｂ）は番組信号記録部、（２）は映像信号入力端子、（
１υは記録信号出力端子、α２は＋１回路である。FIGS. 1 and 2 are diagrams for explaining an embodiment of the video tape recorder of the present invention, and FIG. 3 is a block diagram showing a main part of an embodiment of the video tape recorder of the present invention. (11 is a videotape, (1a) is a data recording section, (1
b) is the program signal recording section, (2) is the video signal input terminal, (
1υ is a recording signal output terminal, and α2 is a +1 circuit.

Claims (1)

【特許請求の範囲】[Claims] ビデオテープの頭部に再生回数を記録した後に番組信号
を再生する様にしたことを特徴とするビデオテープレコ
ーダ。A video tape recorder characterized in that a program signal is played back after recording the number of plays at the beginning of the video tape.
JP20834582A 1982-11-25 1982-11-26 Video tape recorder Granted JPS5998306A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP20834582A JPS5998306A (en) 1982-11-26 1982-11-26 Video tape recorder
CA000441083A CA1291261C (en) 1982-11-25 1983-11-14 Video theater system
US06/551,022 US4942488A (en) 1982-11-25 1983-11-14 Video theater system
AU21567/83A AU564386B2 (en) 1982-11-25 1983-11-21 A video theatre system
NL8304046A NL192967C (en) 1982-11-25 1983-11-24 Video theater installation.
DE19833342520 DE3342520A1 (en) 1982-11-25 1983-11-24 VIDEO THEATER SYSTEM
GB08331362A GB2132812B (en) 1982-11-25 1983-11-24 Video theatre systems
IT23902/83A IT1169143B (en) 1982-11-25 1983-11-25 VIDEOCINEMA
FR838318886A FR2536932B1 (en) 1982-11-25 1983-11-25 VIDEO CINEMA SYSTEM USING AN ORDER CODE, READ IN PLAY MODE TO AUTOMATICALLY CONTROL FOCUS, SCREEN DIMENSIONS OR OTHER PARAMETERS
CA000615631A CA1291259C (en) 1982-11-25 1990-01-26 Video theater system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20834582A JPS5998306A (en) 1982-11-26 1982-11-26 Video tape recorder

Publications (2)

Publication Number Publication Date
JPS5998306A true JPS5998306A (en) 1984-06-06
JPH056724B2 JPH056724B2 (en) 1993-01-27

Family

ID=16554733

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20834582A Granted JPS5998306A (en) 1982-11-25 1982-11-26 Video tape recorder

Country Status (1)

Country Link
JP (1) JPS5998306A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913902U (en) * 1972-05-08 1974-02-05
JPS5774867A (en) * 1980-10-28 1982-05-11 Toshiba Corp Floppy disk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913902U (en) * 1972-05-08 1974-02-05
JPS5774867A (en) * 1980-10-28 1982-05-11 Toshiba Corp Floppy disk

Also Published As

Publication number Publication date
JPH056724B2 (en) 1993-01-27

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