JPH056724B2 - - Google Patents

Info

Publication number
JPH056724B2
JPH056724B2 JP57208345A JP20834582A JPH056724B2 JP H056724 B2 JPH056724 B2 JP H056724B2 JP 57208345 A JP57208345 A JP 57208345A JP 20834582 A JP20834582 A JP 20834582A JP H056724 B2 JPH056724 B2 JP H056724B2
Authority
JP
Japan
Prior art keywords
signal
circuit
number information
videotape
data
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.)
Expired - Lifetime
Application number
JP57208345A
Other languages
Japanese (ja)
Other versions
JPS5998306A (en
Inventor
Akihisa Oosawa
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 FR838318886A priority patent/FR2536932B1/en
Priority to IT23902/83A priority patent/IT1169143B/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)

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エクターを使用したビデ
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を称す。）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 先にビデオプロジエ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
ビデオプロジエクターにより映画を上映する映画
館で、従来のフイルムに依る映画館に比較し、観
客に合せたきめ細から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エクターの
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
セツトが使用されている。BACKGROUND TECHNOLOGY AND PROBLEMS A video theater using a video projector has previously been proposed. This video theater is a movie theater that shows movies using a video projector, and compared to movie theaters that rely on conventional film, it offers benefits such as being able to create detailed screenings tailored to the audience and significantly reducing operating expenses. be. 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.

ところでビデオテープの記録内容は映画フイル
ムと異なり、一般に極めて簡単に複写できるので
盗複写される虞れがあり、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があつ
た。 By the way, unlike movie film, the recorded contents of video tapes are generally very easy to copy, so there is a risk of theft and copying. There was an inconvenience in that the tape could not be supplied reliably.

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, the present invention is designed to enable the user 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 本発明は例えば第３図に示す如くあらかじめ番
組が記録されたビデオテープ１の頭部にデータ記
録部１ａが設けられ、このデータ記録部１ａ内に
記録された垂直同期信号を分離する垂直同期信号
分離回路４と、この垂直同期信号に同期した垂直
ブランキング期間に記録されている再生回数情報
を読み取る再生回数情報読み取り回路３，７，
８，９と、この再生回数情報を回数１だけ増加し
出力する加算回路１２と、このデータ記録部１ａ
に記録する垂直同期信号を発生する垂直同期信号
発生回路１４と、この垂直同期信号発生回路１４
よりの垂直同期信号に同期した垂直ブランキング
期間にこの回数１だけ増加された再生回数情報を
記録するための再生回数情報出力回路１３，１
８，１９とを備え、このビデオテープ１がセツト
されるに応答し、このビデオテープ１を頭部まで
巻き戻し、この再生回数を読み取り、この再生回
数情報に回数１を増加させ、このビデオテープ１
の頭部のデータ記録部１ａに記録するようにした
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 includes, for example, as shown in FIG. 3, a data recording section 1a is provided at the head of a video tape 1 on which a program has been recorded in advance, and a vertical synchronization signal recorded in the data recording section 1a is separated. a vertical synchronization signal separation circuit 4; and reproduction number information reading circuits 3, 7, which read reproduction number information recorded in a vertical blanking period synchronized with the vertical synchronization signal.
8, 9, an adder circuit 12 that increments this reproduction number information by the number of times 1 and outputs it, and this data recording section 1a.
a vertical synchronization signal generation circuit 14 that generates a vertical synchronization signal to be recorded on the vertical synchronization signal generation circuit 14;
Reproduction number information output circuit 13, 1 for recording reproduction number information incremented by this number of times 1 during a vertical blanking period synchronized with a vertical synchronization signal.
8 and 19, and in response to the videotape 1 being set, rewinds the videotape 1 to the beginning, reads the playback number, increments the playback number information by 1, and rewinds the videotape 1 to the beginning. 1
The data is now recorded in the data recording section 1a of the head.
With a VCR, according to the present invention, it is possible to know the number of times a videotape has been played, and from this, it is possible to obtain a clue as to whether or not an act of copying has been committed.

実施例 以下図面を参照しながら本発明ビデオテープレ
コーダの一実施例につき説明しよう。Embodiment An embodiment of the video tape recorder of the present invention will be described below 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
エクター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。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ない様にす
る為映像信号の垂直ブランキング期間に記録する
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１の再生回数をデジタル信号
で記録する如くする。 In this example, the video tape 1 used for the VTR that obtains the video signal source of the video projector of the video theater has the number of tape heads as shown in Figure 1.
The data recording section 1a is the running section for 10 seconds, and then the program signal recording section 1b in which the desired program is recorded. The data in the data recording section 1a is recorded during the vertical blanking period of the video signal so as not to affect the audio and video screen. In this example, this data recording section 1a
The number of times this videotape 1 is played back is recorded 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図にすフローチヤー
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ツトをVTRのカセツト挿
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の頭部まで巻戻し、
このビデオテープ１の頭部（テープトツプ）を確
認したときはVTRは再生読み取り状態となる。
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に供給される。第３図に於いてはこの
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、
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
をデータクロツク信号発振回路６に同期信号とし
て供給し、このデータクツク信号発振回路６を水
平同期信号に同期して発振する如くする。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７にデータクツク信号発振回路６よ
りのデータクロツク信号に従つて供給する如くす
る。又この16ビツトシフトレジスタ７の出力信号
を16ビツトラツチ回路８に供給し、データゲート
パルス信号発生回路５よりのデータゲートパルス
信号に従つてラツチする如する。この16ビツトラ
ツチ回路８の出力信号をデコーダ回路９を介して
表示装置１０に供給し、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１
の現在までの再生回数を表示する如くする。 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 flowchart 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, the VTR first enters the rewind state, and then rewinds the video tape 1 to the beginning.
When the head (tape top) of this videotape 1 is confirmed, the VTR enters the playback/reading state.
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 supplied to a data signal gate circuit 3 and also to a synchronization separation circuit 4.
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 obtained data gate pulse signal 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, so that the data clock signal oscillation circuit 6 is oscillated in synchronization with the horizontal synchronization signal. The output signal of the data signal gate circuit 3 is supplied to, for example, a 16-bit shift register 7 in accordance with a data clock signal from the data clock signal oscillation circuit 6. The output signal of the 16-bit shift register 7 is also supplied to a 16-bit latch circuit 8, and is latched in accordance with the data gate pulse signal from the data gate pulse signal generating circuit 5. The output signal of this 16-bit latch circuit 8 is supplied to a display device 10 via a decoder circuit 9, and the video tape 1 recorded in the data recording section 1a of the video tape 1 is
The number of times it 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つた
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ツプまで巻戻
し、その後このVTRを記録状態とし、ビデオテ
ープ１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１１に得られる信号を記録す
る。即ち第３図に於いては16ビツトラツチ回路８
の出力信号を10進数で“１”に対応するデジタル
信号を付加する＋１回路１２を介して16ビツトシ
フトレジスタ１３に供給する。又第３図に於いて
１４の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１４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１５の一方の入力端子に
供給し、又この同期信号発生回路１４の垂直同期
信号出力端子１４Ｖ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１６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如くし、このデータ
ゲートパルス信号に従つて16ビツトシフトレジス
タ１３にデータ信号を供給する如くする。又この
同期信号発生回路１４の水平同期信号出力端子１
４Ｈに得られる水平同期信号をデータクロツク信
号発振回路１７に同期信号として供給し、このデ
ータクロツク信号発振回路１７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１３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１８に
供給し、データクロツク信号に従つてパラレル．
シリアル変換し、このパラレル−シリアル変換回
路１８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１９を介して加算回路１５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１９はデータゲートパルス信号発生回路１
６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。 When the reproduction/reading of the data recording section 1a is finished, the VTR enters the rewinding state again, and rewinds the videotape 1 to a predetermined position, for example, the top of the tape.Then, the VTR is brought into the recording state, and the data recording section 1a of the videotape 1 is rewound. The signal obtained at the recording signal output terminal 11 in FIG. 3, which will be described below, is recorded. That is, in FIG. 3, the 16-bit latch circuit 8
The output signal is supplied to a 16-bit shift register 13 via a +1 circuit 12 which adds a digital signal corresponding to "1" in decimal notation. Further, FIG. 3 shows a synchronization signal generation circuit that generates vertical and horizontal synchronization signals for 14 video signals, and the composite synchronization signal obtained at the composite synchronization signal output terminal 14a of this synchronization signal generation circuit 14 is added to the addition circuit 15. The vertical synchronizing signal obtained at the vertical synchronizing signal output terminal 14V of the synchronizing signal generating circuit 14 is supplied to the data gate pulse signal generating circuit 16, and vertical blanking synchronized with the vertical synchronizing signal is performed. A data gate pulse signal for the period is obtained, and a data signal is supplied to the 16-bit shift register 13 in accordance with this data gate pulse signal. Also, the horizontal synchronization signal output terminal 1 of this synchronization signal generation circuit 14
The horizontal synchronization signal obtained at 4H is supplied as a synchronization signal to the data clock signal oscillation circuit 17, so that the data clock signal oscillation circuit 17 oscillates in synchronization with the horizontal synchronization signal. The output signal of the 16-bit shift register 13 is supplied to a parallel-to-serial conversion circuit 18 that converts a parallel signal into a serial signal, and converts the parallel signal into a serial signal according to the data clock signal.
After serial conversion, the serial signal obtained at the output side of the parallel-to-serial conversion circuit 18 is supplied to the other input terminal of the adder circuit 15 via the data signal gate circuit 19. In this case, the data signal gate circuit 19 is the data gate pulse signal generation circuit 1
It is controlled by a data gate pulse signal from 6.

この加算回路１５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“＋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子１
１に得られ、これがビデオテープ１のデータ記録
部１ａ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エクターにより上映す
る如くする。 A signal obtained by adding a digital signal "+1" to the current playback count during the data gate pulse signal period of the vertical blanking period of the video signal obtained on the output side of the adding circuit 15 is output to the recording signal output terminal 1.
1, and this is recorded on the data recording section 1a of the videotape 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 and starts playing back the program signal. Thereafter, this program signal is displayed by a projector.

本発明は上述の如く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
をチエツ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, by reading the number of plays from the data recording section 1a, it is possible to know whether the number of plays is as specified in the contract or whether there is an error. . If the number of copies exceeds the contracted number, 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 that various other configurations may be adopted 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 videotape 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 the drawing]

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。 １はビデオテープ、１ａはデータ記録部、１ｂ
は番組信号記録部、２は映像信号入力端子、１１
は記録信号出力端子、１２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. 1 is a video tape, 1a is a data recording section, 1b
11 is a program signal recording section, 2 is a video signal input terminal,
1 is a recording signal output terminal, and 12 is a +1 circuit.

Claims (1)

【特許請求の範囲】 １ あらかじめ番組が記録されたビデオテープの
頭部にデータ記録部が設けられ、該データ記録部
内に記録された垂直同期信号を分離する垂直同期
信号分離回路と、 該垂直同期信号に同期した垂直ブランキング期
間に記録されている再生回数情報を読み取る再生
回数情報読み取り回路と、 該再生回数情報を回数１だけ増加し出力する加
算回路と、 上記データ記録部に記録する垂直同期信号を発
生する垂直同期発生回路と、 該垂直同期信号発生回路よりの垂直同期信号に
同期した垂直ブランキング期間に上記回数１だけ
増加された再生回数情報を記録するための再生回
数情報出力回路とを備え、 上記ビデオテープがセツトされるのに応答し上
記ビデオテープを頭部まで巻き戻し上記再生回数
情報を読み取り、上記再生回数情報に回数１を増
加させ上記ビデオテープの頭部のデータ記録部に
記録することを特徴とするビデオテープレコー
ダ。[Claims] 1. A data recording section is provided at the head of a videotape on which a program is recorded in advance, and a vertical synchronization signal separation circuit that separates a vertical synchronization signal recorded in the data recording section; a reproduction number information reading circuit that reads reproduction number information recorded in a vertical blanking period synchronized with the signal; an addition circuit that increments the reproduction number information by number 1 and outputs the same; and a vertical synchronization circuit that records the reproduction number information in the data recording section. a vertical synchronization generation circuit for generating a signal; and a reproduction number information output circuit for recording reproduction number information incremented by the number of times 1 during a vertical blanking period synchronized with the vertical synchronization signal from the vertical synchronization signal generation circuit. , in response to the videotape being set, rewinds the videotape to the head, reads the playback number information, increments the playback number information by 1, and increments the playback number information by a data recording section at the head of the videotape. A videotape recorder characterized by recording.
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
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
IT23902/83A IT1169143B (en) 1982-11-25 1983-11-25 VIDEOCINEMA
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 JPS5998306A (en) 1984-06-06
JPH056724B2 true 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
JPS5998306A (en) 1984-06-06

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