WO1997028648A1 - Programmable control method and device for a recording apparatus - Google Patents

Programmable control method and device for a recording apparatus Download PDF

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Publication number
WO1997028648A1
WO1997028648A1 PCT/FR1997/000173 FR9700173W WO9728648A1 WO 1997028648 A1 WO1997028648 A1 WO 1997028648A1 FR 9700173 W FR9700173 W FR 9700173W WO 9728648 A1 WO9728648 A1 WO 9728648A1
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WO
WIPO (PCT)
Prior art keywords
code
transmission
sound
recording
signal
Prior art date
Application number
PCT/FR1997/000173
Other languages
French (fr)
Inventor
Philippe Bertrand
David Parot
Original Assignee
Philippe Bertrand
David Parot
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
Priority claimed from FR9601048A external-priority patent/FR2744316A1/en
Application filed by Philippe Bertrand, David Parot filed Critical Philippe Bertrand
Priority to JP9527359A priority Critical patent/JP2000504170A/en
Priority to EP97902398A priority patent/EP0878093A1/en
Priority to AU16058/97A priority patent/AU1605897A/en
Publication of WO1997028648A1 publication Critical patent/WO1997028648A1/en
Priority to NO983250A priority patent/NO983250L/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H04N7/0887—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of programme or channel identifying signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/06—Systems for the simultaneous transmission of one television signal, i.e. both picture and sound, by more than one carrier

Definitions

  • the invention relates to a programmable control device and method for a recording apparatus, in particular a video recorder, for recording a television program.
  • the programming systems for the time and duration of recording of television programs currently included in the video recorders make it possible to set, in addition to the channel of the emission, a trigger time and a duration of the recording to be made. .
  • both the time scheduled for the start and the duration of the recording are subject in practice to fluctuations due to non-compliance with broadcast times by television channels and to advertising periods of variable duration before the program ⁇ record and even, on certain channels during the program itself.
  • the recording is triggered, that is to say before the start. of the program and in this case the end of the previous program or, more often, advertising, recorded rst, either after this beginning and in this case the start of the program is not recorded.
  • Another drawback resides in the fact that these advertising spots or these previous broadcast ends inappropriately occupy a certain space of the recording medium (of the tape) and. this may then not be sufficient for the totality of the desired program.
  • SUBSTITUTE SHEET (RULE 26) One of them consists in coding the video signal of all the programs but not of the advertising range. As a result, a decoder placed at the input of the tuner of the video recorder does not start or maintain the recording until and as long as the coding signal is present on the video signal.
  • This system has the drawback of requiring coding of the video signal during the entire transmission. It does not indicate the start or end of a broadcast, but only the presence or absence of a broadcast. Therefore, in the event of an extension of the previous program beyond the time scheduled for the start of recording, the video recorder will be triggered because the system has detected the presence of a program, unless an identification code was not provided in the system used, which does not seem to be the case.
  • Another system consists in using the sound signal to convey information about the start and end of the broadcast as well as the pause. This system makes it possible to start and stop recording at the exact time, but is not scalable and cannot adapt to changes in the transmission process. In addition, it allows coding by type of program but not specific coding for each program, which would be too cumbersome to manage.
  • the invention aims to overcome these drawbacks by providing a method and a device for recording a television program from its exact start to the precise end without simultaneously recording the pause times of the program. It also makes it possible to identify a particular program.
  • NICAM a system known as NICAM.
  • the NICAM system allows the transmission of signals corresponding to digital codes on the two stereophonic sound channels and to restore them in digital form after reception.
  • DVB Digital Video Broadcasting
  • DVB is divided into two parts: an MPEG coder and a processing and transmission device.
  • the MPEG encoder is present at the head of the DVB transmission chain and makes it possible to digitize and compress sound, image and data.
  • the object of the invention is therefore to use a system of this type, that is to say a system using, at least for sound, digital coding, to transmit to a recording device, in particular a video recorder, commands from operation at a specific time.
  • the binary code also includes data identifying the program.
  • the code is divided into two parts, each being transmitted to a respective Right or Left sound channel.
  • the bits are distributed in an interlaced manner in the two parts.
  • the transmission system used is the DVB system.
  • the transmission system used is the NICAM system
  • the invention also relates to a programmable control device for implementing the method, characterized in that it comprises:
  • a binary coding means intended to develop a bit stream comprising a code which corresponds to an order intended for a recording apparatus
  • FIG. 1 shows diagrammatically the system for transmitting the sound signal and the code, in the case of the use of NICAM;
  • FIG. 2a shows the frame of the command and identification code
  • FIG. 2b shows the part of the frame with its header inserted in the sound signal on the Right channel
  • FIG. 2c shows the part of the frame with its header inserted in the sound signal on the Left channel
  • a method of transmitting and receiving a television program whose sound is coded by means of the NICAM method is carried out as follows.
  • the stereophonic sound is digitized on 14 bits then sampled to give 32 samples on each channel, right and left, then each bit train is compressed and processed in such a way that we obtain at the output two 364 bit trains.
  • the digital carrier is then modulated and incorporated into the video signal, then the assembly is transmitted.
  • the programming code of a recording device for example a video recorder
  • a recording device for example a video recorder
  • the programming code of a recording device is presented, in binary form, according to a frame of 64 bits (8 bytes).
  • the first 5 bits are characteristic of the control of the recording device, i.e. the start of the recording, the pause, the resumption and the stop.
  • the following 43 bits are used to transmit the identity of the program.
  • the remaining 16 bits will allow the transmission of information in a later evolution of the system.
  • the codes used for the commands of the recording device are according to the present embodiment: - 00001 Beginning of recording.
  • the code used to identify the program can take several forms:
  • cetto solution requires 12 bits, or by the code used by certain magazines and known under the registered name "Show View”; this solution requires 34 bits, or any other appropriate means that can provide a distinctive code.
  • this frame is cut in half.
  • a 1 byte synchronization header is added to each half, bringing the total transmission to 10 bytes.
  • This data can be interleaved or not.
  • the two modulated parts are transmitted to the Right channel and the Left channel of the coder used, NICAM or DVB for example, the whole being transmitted instead of the sound signal of the broadcast.
  • provision may be made for compression of the frame of the code according to a known algorithm.
  • the code of the selected program is entered into the device according to the invention by means of a keyboard, a barcode reader or any suitable means.
  • the DVB, NICAM or other decoder restores the sound and code signals which it has demodulated in order to send them to the sound amplification of the recording apparatus and to the device according to the invention, which constantly converts the signal analog signal received in digital signal and compares it to the frame of the code programmed by the user. As soon as the comparison identifies a frame Identical to the frame resulting from programming, it sends an order signal to the recording device which executes it.
  • FIG. 1 A block diagram of the device according to the invention is shown in FIG. 1. In this case, the NICAM system is used, but the diagram remains valid with DVB or any other coding system.
  • the device comprises, at the transmitting station, a first system 1 for coding and injecting data into the right and left channels of the sound.
  • This system includes a device for developing the code frame 3 which receives the data from a keyboard (or any other programming means) develops the control frame, divides the resulting bit stream into two parts which are modulated. Co device also controls the two devices for injecting the modulated control signal 4 (component of switches) to transmit the Right and Left signals representative of the two parts of the code, instead of the Right and Left signals of the sound, to the system. NICAM 5. The signal from the NICAM system is sent to the transmitter 6.
  • the device according to the invention comprises, for the user, a second system 2 for receiving and transmitting the code transmitted to the recording device.
  • This second system includes a device 9 which receives the signals transmitted by the receiver 7 and the NICAM decoder and permanently converts these signals into digital form. It also includes a comparison circuit which permanently compares the digital sequences with the frame programmed by the user and transmits, in the event of a match, an order signal to the recording device.
  • Figures 2a to 2c show the digital frame of the programmed code and the distribution of the bits on the two Right and Left channels
  • the device 9 comprises a circuit for detecting errors in the frame received when the latter has a bit stream close to that of the programmed frame. It then performs a correction according to a known algorithm to find the exact frame of the code.
  • the system according to the invention is not limited to the example described but can be improved by the use of other codes emitted simultaneously by the television channel.
  • Teletext code can be used to precisely identify the program, which is selected by the user on his screen by any known means (mouse, joystick, keyboard cursor ... etc ...), when he programs his recording device.
  • the programmed code frame can be injected directly into the NICAM coder, the code bits then succeeding the reservation bits of the NICAM frame which contain the indication of the code which follows. It can also be provided that the code is transmitted several times in succession to ensure its reception.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Selective Calling Equipment (AREA)

Abstract

A programmable recording apparatus control device comprising a first system (1) located at the transmitter station and provided with a binary encoding means (3) for generating a bit stream that comprises a control code for a recording apparatus, a means for modulating the generated code (3), an interface (4) for inputting the generated code into the transmission device used prior to transmission, and a second system (2) located at the receiver station and provided with a code recognition system (9) that separates the code signal from the sound signal, and an interface (9) for transmitting the code to the recording apparatus.

Description

PROCEDE ET DISPOSITIF DE COMMANDE PROGRAMMABLE POUR UN APPAREIL D'ENREGISTREMENT PROGRAMMABLE CONTROL METHOD AND DEVICE FOR A RECORDING APPARATUS
L'invention concerne un procédé et un dispositif de commande programmable pour appareil d'enregistrement, notamment un magnétoscope, afin d'enregistrer une émission de télévision.The invention relates to a programmable control device and method for a recording apparatus, in particular a video recorder, for recording a television program.
Les .systèmes de programmation de l'heure et de la durée d'enregistrement des émissions de télévision inclus actuellement dans les magnétoscopes permettent de régler, outre le canal de l'émission, une heure de déclenchement et une durée de l'enregistrement à effectuer. Cependant, tant l'heure prévue pour le déclenchement que la durée de l'enregistrement sont soumises dans la pratique à des fluctuations dues au non respect des horaires d'émission par les chaînes de télévision et aux plages de publicité de durée variable avant l'émission Λ enregistrer et même, sur certaines chaînes pendant l'émission elle-même.The programming systems for the time and duration of recording of television programs currently included in the video recorders make it possible to set, in addition to the channel of the emission, a trigger time and a duration of the recording to be made. . However, both the time scheduled for the start and the duration of the recording are subject in practice to fluctuations due to non-compliance with broadcast times by television channels and to advertising periods of variable duration before the program Λ record and even, on certain channels during the program itself.
De. ce fait, lorsque l'utilisateur a réglé, outre le canal, l'heure de début de l'émission ainsi que sa durée tels qu'elles figurent dans les programmes de télévision, l'enregistrement est déclenché, soit avant le commencement réel de l'émission et dans ce cas la fin de l'émission précédente ou, le plus souvent, de la publicité, rst enregistrée, soit après ce commencement et dans ce cas le début de l'émission n'est pas enregistré. Un autre inconvénient réside dans le fait que ces plages de publicité ou ces fins d'émission précédente occupent de façon inopportune un certain espace du support d'enregistrement (de la bande) et. celui-ci peut alors ne pas suffire pour la totalité do l'émission désirée.Therefore, when the user has set, in addition to the channel, the start time of the program as well as its duration as they appear in the television programs, the recording is triggered, that is to say before the start. of the program and in this case the end of the previous program or, more often, advertising, recorded rst, either after this beginning and in this case the start of the program is not recorded. Another drawback resides in the fact that these advertising spots or these previous broadcast ends inappropriately occupy a certain space of the recording medium (of the tape) and. this may then not be sufficient for the totality of the desired program.
Plusieurs systèmes ont été proposés pour résoudre ce problème.Several systems have been proposed to solve this problem.
FEUILLE DE REMPLACEMENT (RÈGLE 26) L'un d'eux consiste à coder lo signal vidéo de l'ensemble des émissions mais pas de la plage de publicité. De ce fait, un décodeur placé à l'entrée du syntoniseur du magnétoscope ne déclenche et ne maintient l'enregistrement que lorsque et tant que le signal de codage est présent sur le signal vidéo.SUBSTITUTE SHEET (RULE 26) One of them consists in coding the video signal of all the programs but not of the advertising range. As a result, a decoder placed at the input of the tuner of the video recorder does not start or maintain the recording until and as long as the coding signal is present on the video signal.
Ce système présente l'inconvénient d'imposer un codage du signal vidéo pendant toute l'émission. Il n'indique pas un début ou une fin d'émission, mais seulement la présence ou non d'uno émission. De ce fait, en cas de prolongation de l'émission précédente au-delà de J 'heure prévue pour le début do l'enregistrement, le magnétoscope va être déclenché car le système a détecté la présence d'une émission, à moins qu'un code d'identification n'ait été prévu dans le système utilisé, ce qui ne semble pas être le cas.This system has the drawback of requiring coding of the video signal during the entire transmission. It does not indicate the start or end of a broadcast, but only the presence or absence of a broadcast. Therefore, in the event of an extension of the previous program beyond the time scheduled for the start of recording, the video recorder will be triggered because the system has detected the presence of a program, unless an identification code was not provided in the system used, which does not seem to be the case.
Un autre système consiste à utiliser lo signal son pour véhiculer une information de début et de fin d'émission ainsi que de pause. Ce système permet do démarrer et d'arrêter l'enregistrement à l'heure exacte mais n'est pas évolutif et ne peut s'adapter à des changements dans le procédé d'émission. De plus il permet un codage par type d'émission mais pas un codage particulier à chaque émission, ce qui serait trop lourd à gérer.Another system consists in using the sound signal to convey information about the start and end of the broadcast as well as the pause. This system makes it possible to start and stop recording at the exact time, but is not scalable and cannot adapt to changes in the transmission process. In addition, it allows coding by type of program but not specific coding for each program, which would be too cumbersome to manage.
L'invention vise à pallier ces inconvénients en procurant un procédé et un dispositif permettant d'enregistrer une émission de télévision depuis son commencement exact jusqu'à la fin précise sans enregistrer en même temps les temps de pause de l'émission. Elle permet en outre d'identifier une émission en particulier.The invention aims to overcome these drawbacks by providing a method and a device for recording a television program from its exact start to the precise end without simultaneously recording the pause times of the program. It also makes it possible to identify a particular program.
Il existe maintenant des systèmes de codage numérique de la bande son et même de l'ensemble de l'émission de télévision. Ces systèmes utilisent une trame définie de signaux numériques utilisable pour 1 transporter non seulement du son mais aussi de l'image et des données.There are now digital coding systems for the soundtrack and even the entire television program. These systems use a defined frame of digital signals usable for 1 transport not only sound but also image and data.
Par exemple, depuis peu, certaines chaînes de télévision transmettent une partie de leur programme, notamment des films, avec un son stéréophonique. Cette transmission du son stéréophonique s'effectue au moyen d'un système connu sous le nom do NICAM. Le système NICAM permet la transmission de signaux correspondant à des codes numériques sur les deux voies du son stéréophonique et de les restituer sous forme numérique après réception.For example, some television channels have recently been transmitting part of their program, in particular films, with stereophonic sound. This transmission of stereophonic sound is effected by means of a system known as NICAM. The NICAM system allows the transmission of signals corresponding to digital codes on the two stereophonic sound channels and to restore them in digital form after reception.
Un autre système, le système DVB (Digital Vidéo Broadcasting) , est un nouveau standard de diffusion numérique audiovisuelle. Il fonctionne aujourd'hui sur le satellite, mais fonctionnera bientôt sur le câble et par voie terrestre. Il a l'avantage d'offrir une qualité vidéo et audio sans précédent et permet d'obtenir plusieurs programmes sur une même chaîne. Il offre de plus des services interactifs (achats, choix du programme, jeux...etc...) .Another system, the DVB (Digital Video Broadcasting) system, is a new standard in digital audiovisual broadcasting. It works today on satellite, but will soon work on cable and by land. It has the advantage of offering unprecedented video and audio quality and makes it possible to obtain several programs on the same channel. It also offers interactive services (shopping, choice of program, games ... etc ...).
Techniquement le DVB se décompose en deux parties : un codeur MPEG et un dispositif de traitement et de transmission. Le codeur MPEG est présent en tête de la chaîne de transmission du DVB et permet de numériser et de compresser le son, l'image et les données.Technically, DVB is divided into two parts: an MPEG coder and a processing and transmission device. The MPEG encoder is present at the head of the DVB transmission chain and makes it possible to digitize and compress sound, image and data.
Le but de l'invention est donc d'utiliser un système de ce type, c'est à dire un système utilisant, au moins pour le son, un codage numérique, pour transmettre à un appareil enregistreur, notamment un magnétoscope, des commandes de fonctionnement à un instant précis.The object of the invention is therefore to use a system of this type, that is to say a system using, at least for sound, digital coding, to transmit to a recording device, in particular a video recorder, commands from operation at a specific time.
Ce but est atteint selon l'invention par les étapes de procédé suivantes : - élaboration d'un code binaire, incluant notamment les données représentatives de l'instant doThis object is achieved according to the invention by the following process steps: - development of a binary code, including in particular the data representative of the instant do
FEUILLE DE REMPLACEMENT (RÈGLE 26) A début, de suspension, de reprise ou de fin de l'émission à enregistrer,SUBSTITUTE SHEET (RULE 26) At the start, suspension, resumption or end of the program to be recorded,
- modulation du signal correspondant au code,- modulation of the signal corresponding to the code,
- transmission du code modulé h au moins un canal son (droite et/ou gauche) en lieu et place du son,- transmission of the modulated code h at least one sound channel (right and / or left) instead of sound,
- transmission de l'ensemble à l'entrée son du système de codage du système de transmission numérique ou analogique utilisé, qui effectue le traitement du signal et le transmet à l'émetteur,- transmission of the assembly to the sound input of the coding system of the digital or analog transmission system used, which performs the signal processing and transmits it to the transmitter,
- réception et séparation du signal véhiculant le code et du signal véhiculant le son,- reception and separation of the signal carrying the code and the signal carrying the sound,
- démodulation du code d'émission restitué,- demodulation of the returned emission code,
- transmission des données au système do programmation de l'appareil enregistreur,- transmission of data to the programming system of the recording device,
- exécution des ordres transmis.- execution of transmitted orders.
Selon l'invention, le code binaire inclut également des données d'identification de l'émission.According to the invention, the binary code also includes data identifying the program.
Afin d'éviter que le signal représentant le code binaire ne soit audible, de préférence, le code est divisé en deux parties, chacune étant transmise à un canal son respectif Droite ou Gauche. De préférence, les bits sont répartis de manière entrelacée dans les deux parties. Selon une forme do l'invention lo système de transmission utilisé est le système DVB.In order to prevent the signal representing the binary code from being audible, preferably the code is divided into two parts, each being transmitted to a respective Right or Left sound channel. Preferably, the bits are distributed in an interlaced manner in the two parts. According to one form of the invention, the transmission system used is the DVB system.
Selon une autre forme de réalisation, lo système de transmission utilisé est le système NICAMAccording to another embodiment, the transmission system used is the NICAM system
L'invention concerne également un dispositif de commande programmable pour la mise en oeuvre du procédé, caractérisé en ce qu'il comporte :The invention also relates to a programmable control device for implementing the method, characterized in that it comprises:
- un premier système situé à la r.tation d'émission et comprenant :- a first system located at the transmission station and comprising:
- un moyen de codage binaire destiné à élaborer un train de bits comportant un code qui correspond à un ordre destiné à un appareil enregistreur,a binary coding means intended to develop a bit stream comprising a code which corresponds to an order intended for a recording apparatus,
- un moyen de modulation du code élaboré, Ç- a means of modulating the developed code, VS
- un système d'interface permettant d'injecter le code élaboré dans le dispositif de traitement du son du système de transmission utilisé, avant émission, un second système situé à la ntation réceptrice et comprenant :- an interface system allowing the code developed to be injected into the sound processing device of the transmission system used, before transmission, a second system located at the receiving station and comprising:
- un système de reconnaissance du code, qui sépare le signal représentatif du code de celui du son,- a code recognition system, which separates the signal representative of the code from that of the sound,
- une interface do transmission du code à l'appareil enregistreur. L'invention sera mieux comprise au moyen d'un exemple de réalisation représenté sur le dessin annexé, sur lequel :- an interface for transmitting the code to the recording device. The invention will be better understood by means of an exemplary embodiment represented in the appended drawing, in which:
La figure 1 montre schematiquement le système de transmission du signal son et du code, dans le cas de l'utilisation du NICAM ;FIG. 1 shows diagrammatically the system for transmitting the sound signal and the code, in the case of the use of NICAM;
La figure 2a montre la trame du code de commande et d'identification ;FIG. 2a shows the frame of the command and identification code;
La figure 2b montre la partie de trame avec son entête intercalée dans le signal son sur la voie Droite,FIG. 2b shows the part of the frame with its header inserted in the sound signal on the Right channel,
La figure 2c montre la partie de trame avec son entête intercalée dans le signal son sur la voie Gauche,FIG. 2c shows the part of the frame with its header inserted in the sound signal on the Left channel,
Un procédé d'émission et de réception d'une émission de télévision dont le son est codé au moyen du procédé NICAM s'effectue de la façon suivante.A method of transmitting and receiving a television program whose sound is coded by means of the NICAM method is carried out as follows.
Le son stéréophonique est numérisé sur 14 bits puis échantillonné pour donner 32 échantillons sur chaque voie, droite et gauche, puis chaque train de bits est compressé et traité de telle sorto que l'on obtient à la βortie deux trains de 364 bits. La porteuse numérique est alors modulée et incorporée au signal vidéo, puis l'ensemble est émis.The stereophonic sound is digitized on 14 bits then sampled to give 32 samples on each channel, right and left, then each bit train is compressed and processed in such a way that we obtain at the output two 364 bit trains. The digital carrier is then modulated and incorporated into the video signal, then the assembly is transmitted.
A la réception, on effectue les opérations inverses .On reception, the reverse operations are carried out.
Selon une forme de réal isation de l ' invention , le code de programmation d' un apparei l enregistreur, par exemple un magnétoscope, se présente, sous forme binaire, selon une trame de 64 bits (8 octets).According to one embodiment of the invention, the programming code of a recording device, for example a video recorder, is presented, in binary form, according to a frame of 64 bits (8 bytes).
Les 5 premiers bits sont caractéristiques de la commande de l'appareil enregistreur, c'est-à-dire le début de l'enregistrement, la pause, la reprise et l'arrêt.The first 5 bits are characteristic of the control of the recording device, i.e. the start of the recording, the pause, the resumption and the stop.
Les 43 bits suivants servent à transmettre l'identité de l'émission.The following 43 bits are used to transmit the identity of the program.
Les 16 bits restants permettront la transmission d'informations dans une évolution ultérieure du système.The remaining 16 bits will allow the transmission of information in a later evolution of the system.
Les codes utilisés pour les commandes de l'appareil enregistreur sont selon la présente réalisation : - 00001 Début d'enregistrement.The codes used for the commands of the recording device are according to the present embodiment: - 00001 Beginning of recording.
- 00010 Mise en pause de l'enregistrement.- 00010 Pause recording.
- 00011 Reprise de l'enregistrement.- 00011 Resumption of recording.
- 00100 Arrêt de l'enregistrement.- 00100 Stop recording.
Le code servant à identifier l'émission peut se présenter sous différentes formes:The code used to identify the program can take several forms:
- soit par l'heure prévue pour l'émission dans les magazines de télévision.; cetto solution nécessite 12 bits, soit par le code utilisé par certains magazines et connu sous le nom déposé "Show View"; cette solution nécessite 34 bits, soit tout autre moyen approprié pouvant fournir un code distinctif.- either by the time scheduled for the broadcast in television magazines .; cetto solution requires 12 bits, or by the code used by certain magazines and known under the registered name "Show View"; this solution requires 34 bits, or any other appropriate means that can provide a distinctive code.
Dans tous les cas, les 43 bits réservés sont suffisants pour couvrir de nombreuses possibilités.In all cases, the reserved 43 bits are sufficient to cover many possibilities.
Selon l'exemple de réalisation de l'invention, cette trame est coupée en deux. Une entête de synchronisation de 1 octet est rajoutée à chaque moitié, ce qui porte la transmission totale à 10 octets. Ces données peuvent être entrelacées ou non. Les deux parties modulées sont transmises h la voie Droite et la voie Gauche du codeur utilisé, NICAM ou DVB par exemple, l'ensemble étant transmis en lieu et place du signal son de l'émission.According to the embodiment of the invention, this frame is cut in half. A 1 byte synchronization header is added to each half, bringing the total transmission to 10 bytes. This data can be interleaved or not. The two modulated parts are transmitted to the Right channel and the Left channel of the coder used, NICAM or DVB for example, the whole being transmitted instead of the sound signal of the broadcast.
Selon l'invention, on peut prévoir une compression de la trame du code selon un algorithme connu.According to the invention, provision may be made for compression of the frame of the code according to a known algorithm.
Du côté réception, le code de l'émission choisie est rentré dans le dispositif selon l'invention au moyen d'un clavier, d'un lecteur de code-barres ou tout moyen approprié. A la réception, le décodeur DVB, NICAM ou autre, restitue les signaux son et code qu'il a démodulé pour les envoyer à l'amplification son de l'appareil enregistreur et au dispositif selon l'invention, qui convertit en permanence lo signal analogique reçu en signal numérique et le compare à la trame du code programmé par l'utilisateur. Dès que la comparaison identifie une trame Identique à la trame issue de la programmation, il émet un signal d'ordre à l'appareil enregistreur qui l'exécute. Un schéma de principe du dispositif selon l'invention est représenté sur la figure 1. Dans ce cas on utilise lo système NICAM, mais le schéma reste valable avec le DVB ou tout autre système de codage.On the reception side, the code of the selected program is entered into the device according to the invention by means of a keyboard, a barcode reader or any suitable means. On reception, the DVB, NICAM or other decoder restores the sound and code signals which it has demodulated in order to send them to the sound amplification of the recording apparatus and to the device according to the invention, which constantly converts the signal analog signal received in digital signal and compares it to the frame of the code programmed by the user. As soon as the comparison identifies a frame Identical to the frame resulting from programming, it sends an order signal to the recording device which executes it. A block diagram of the device according to the invention is shown in FIG. 1. In this case, the NICAM system is used, but the diagram remains valid with DVB or any other coding system.
Le dispositif selon l'invention comprend, à la station émettrice, un premier système 1 de codage et d'injection des données dans les canaux droite et gauche du son .The device according to the invention comprises, at the transmitting station, a first system 1 for coding and injecting data into the right and left channels of the sound.
Ce système comporte un dispositif d'élaboration de la trame de code 3 qui reçoit les données d'un clavier (ou de tout autre moyen do programmation) élabore la tramo de commande, divise le train de bits résultant en deux parties qui sont modulées. Co dispositif commande également les deux dispositifs d'injection du signal de commande modulé 4 (constituant de commutateurs) pour transmettre les signaux Droite et Gauche représentatifs des deux parties du code, à la place des signaux Droite et Gauche du son, au système NICAM 5. Le signal issu du système NICAM est envoyé à l'émetteur 6.This system includes a device for developing the code frame 3 which receives the data from a keyboard (or any other programming means) develops the control frame, divides the resulting bit stream into two parts which are modulated. Co device also controls the two devices for injecting the modulated control signal 4 (component of switches) to transmit the Right and Left signals representative of the two parts of the code, instead of the Right and Left signals of the sound, to the system. NICAM 5. The signal from the NICAM system is sent to the transmitter 6.
Le dispositif selon l'invention comporte, chez l'utilisateur, un second système 2 de réception et de transmission du code émis à l'appareil enregistreur.The device according to the invention comprises, for the user, a second system 2 for receiving and transmitting the code transmitted to the recording device.
Ce second système comporte un dispositif 9 qui reçoit les signaux transmis par le récepteur 7 et lo décodeur NICAM et convertit en permanence ces signaux sous forme numérique. Il comprend également un circuit de comparaison qui compare en permanence les séquences numériques avec la trame programmée par l'utilisateur et transmet en cas de concordance un signal d'ordre à l'appareil enregistreur.This second system includes a device 9 which receives the signals transmitted by the receiver 7 and the NICAM decoder and permanently converts these signals into digital form. It also includes a comparison circuit which permanently compares the digital sequences with the frame programmed by the user and transmits, in the event of a match, an order signal to the recording device.
Les figures 2a à 2c montrent la trame numérique du code programmé et la répartition des bits sur les deux voies Droite et GaucheFigures 2a to 2c show the digital frame of the programmed code and the distribution of the bits on the two Right and Left channels
Selon une forme particulière de l'invention, le dispositif 9 comprend un circuit de détection d'erreurs dans la trame reçue lorsque celle-ci présente un train de bits proche do celui de la trame programmée. Il effectue alors une correction selon un algorithme connu pour retrouver la trame exacte du code.According to a particular form of the invention, the device 9 comprises a circuit for detecting errors in the frame received when the latter has a bit stream close to that of the programmed frame. It then performs a correction according to a known algorithm to find the exact frame of the code.
Le système selon l'invention n'est pas limité à l'exemple décrit mais peut être amélioré par l'usage d'autres codes émia simultanément par la chaîne do télévision.The system according to the invention is not limited to the example described but can be improved by the use of other codes emitted simultaneously by the television channel.
Par exemple, le code Télétexte peut être utilisé pour identifier précisément l'émission, celui- ci étant sélectionné par l'utilisateur sur son écran par tout moyen connu (souris, manette, curseur clavier...etc...) , lorsqu'il programme son appareil enregistreur.For example, the Teletext code can be used to precisely identify the program, which is selected by the user on his screen by any known means (mouse, joystick, keyboard cursor ... etc ...), when he programs his recording device.
Selon une autre forme de réalisation, la trame de code programmé peut être injectée directement dans le codeur NICAM, les bits do code succédant alors aux bits de réservation de la trame du NICAM qui contiennent l'indication du code qui suit. On peut prévoir également que le code soit transmis plusieurs fois de suite pour assurer sa réception.According to another embodiment, the programmed code frame can be injected directly into the NICAM coder, the code bits then succeeding the reservation bits of the NICAM frame which contain the indication of the code which follows. It can also be provided that the code is transmitted several times in succession to ensure its reception.
Dans l'exemple de réalisation ci-dessus, on a décrit une réalisation de l'invention utilisant le système NICAM. Il va de soi que cette réalisation n'est pas limitative et que tout système de transmission audiovisuel a codage numérique ou analogique convient, par exemple le système DVB. Le principe est toujours le même.In the above embodiment, an embodiment of the invention has been described using the NICAM system. It goes without saying that this embodiment is not limiting and that any audiovisual transmission system with digital or analog coding is suitable, for example the DVB system. The principle is always the same.
FEUILLE DE REMPLACEMENT (RÈGLE 26) SUBSTITUTE SHEET (RULE 26)

Claims

REVENDICATIONS
1. - Procédé do commande programmable pour appareil enregistreur d'émissions de télévision, destiné à déclencher, suspendre ou arrêter l'enregistrement d'une émission déterminée en excluant de l'enregistrement tout ce qui n'appartient pas à cette émission, caractérisé par les étapes suivantes : élaboration d'un code binaire, incluant notamment les données représentatives de l'instant de début, de suspension, de reprise ou de fin de l'émission à enregistrer, - modulation du signal correspondant au code,1. - Programmable control method for a television program recording device, intended to trigger, suspend or stop the recording of a given program by excluding from the recording everything which does not belong to this program, characterized by the following stages: development of a binary code, including in particular the data representative of the instant of start, suspension, resumption or end of the emission to be recorded, - modulation of the signal corresponding to the code,
- transmission du code modulé n au moins un canal son (droite et/ou gauche) en lieu et place du son,- transmission of the modulated code n at least one sound channel (right and / or left) in place of the sound,
- transmission de l'ensemble à l'entrée son du système de transmission numérique ou analogique utilisé, qui effectue le traitement du signal et le transmet à l'émetteur,- transmission of the assembly to the sound input of the digital or analog transmission system used, which performs the signal processing and transmits it to the transmitter,
- réception et séparation du signal véhiculant le code et du signal véhiculant le son, - démodulation du code d'émission restitué, transmission des données au système de programmation de l'appareil enregistreur,- reception and separation of the signal conveying the code and the signal conveying the sound, - demodulation of the restored emission code, transmission of the data to the programming system of the recording device,
- exécution des ordres transmis.- execution of transmitted orders.
2. - Procédé selon la revendication 1 caractérisé en ce que le système de transmission utilisé est le système DVB.2. - Method according to claim 1 characterized in that the transmission system used is the DVB system.
3. - Procédé selon la revendication 1 caractérisé en ce que le système de transmission utilisé est le système NICAM3. - Method according to claim 1 characterized in that the transmission system used is the NICAM system
4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le code binaire inclut également des données d'identification de l'émission.4. Method according to any one of claims 1 to 3, characterized in that the code binary also includes program identification data.
5. - Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le code binaire est divisé en deux parties, chacune étant transmise à un canal son respectif Droite ou Gauche.5. - Method according to any one of claims 1 to 3, characterized in that the binary code is divided into two parts, each being transmitted to a respective Right or Left sound channel.
6. - Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le code binaire est réparti sur les deux parties de manière entrelacée.6. - Method according to any one of claims 1 to 3, characterized in that the binary code is distributed over the two parts in an interlaced manner.
7. - Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le code binaire est un code à 64 bits.7. - Method according to any one of the preceding claims, characterized in that the binary code is a 64-bit code.
8. - Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce quo la trame du code de commande est compressée selon un algorithme connu.8. - Method according to any one of the preceding claims, characterized in that the frame of the control code is compressed according to a known algorithm.
9. - Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'on effectue une détection et une correction d'erreurs dans la trame reçue.9. - Method according to any one of the preceding claims, characterized in that a detection and a correction of errors in the received frame are carried out.
10. - Dispositif de commande programmable pour la mise en oeuvre du procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte :10. - Programmable control device for implementing the method according to any one of the preceding claims, characterized in that it comprises:
- un premier système (1) situé à la station d'émission et comprenant :- a first system (1) located at the transmitting station and comprising:
- un moyen do codage binaire (3) destiné à élaborer un train de bits comportant un code qui correspond à un ordre destiné à un appareil enregistreur,- a binary coding means (3) intended to develop a bit stream comprising a code which corresponds to an order intended for a recording apparatus,
- un moyen de modulation du code élaboré (3), un système d'interface (4) permettant d'injecter le code élaboré dans le dispositif de traitement du son du système de transmission utilisé, avant émission,a means for modulating the developed code (3), an interface system (4) making it possible to inject the developed code into the sound processing device of the transmission system used, before transmission,
FEUILLE DE REMPLACEMENT (RÈGLE 26) - un second système (2) situé A la station réceptrice et comprenant :SUBSTITUTE SHEET (RULE 26) - a second system (2) located at the receiving station and comprising:
- un système de reconnaissance du code (9), qui sépare le signal représentatif du code de celui du son,- a code recognition system (9), which separates the signal representative of the code from that of the sound,
- unπ interface de transmission (9) du code à l'appareil enregistreur.- a code transmission interface (9) to the recording device.
FEUILLE DE REMPLACEMENT (RÈGLE 26) SUBSTITUTE SHEET (RULE 26)
PCT/FR1997/000173 1996-01-30 1997-01-29 Programmable control method and device for a recording apparatus WO1997028648A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP9527359A JP2000504170A (en) 1996-01-30 1997-01-29 Method and apparatus for programmable control of a recording device
EP97902398A EP0878093A1 (en) 1996-01-30 1997-01-29 Programmable control method and device for a recording apparatus
AU16058/97A AU1605897A (en) 1996-01-30 1997-01-29 Programmable control method and device for a recording apparatus
NO983250A NO983250L (en) 1996-01-30 1998-07-14 Method and apparatus for programmable control of a recording apparatus

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR96/01048 1996-01-30
FR9601048A FR2744316A1 (en) 1996-01-30 1996-01-30 Programmable control method for video recorder
FR9607402A FR2744317B1 (en) 1996-01-30 1996-06-14 PROGRAMMABLE CONTROL METHOD AND DEVICE FOR A RECORDING APPARATUS
FR96/07402 1996-06-14

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JP (1) JP2000504170A (en)
KR (1) KR19990082110A (en)
CN (1) CN1209932A (en)
AU (1) AU1605897A (en)
CA (1) CA2243848A1 (en)
FR (1) FR2744317B1 (en)
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WO (1) WO1997028648A1 (en)

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CA2243848A1 (en) 1997-08-07
EP0878093A1 (en) 1998-11-18
FR2744317A1 (en) 1997-08-01
NO983250D0 (en) 1998-07-14
KR19990082110A (en) 1999-11-15
NO983250L (en) 1998-09-30
AU1605897A (en) 1997-08-22
JP2000504170A (en) 2000-04-04
CN1209932A (en) 1999-03-03
FR2744317B1 (en) 1998-04-17

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