FR2591838A2 - Method based on a very simple and economical electronic set-up (circuit) allowing the fitting of a television peripheral socket for a television receiver without such a socket - Google Patents
Method based on a very simple and economical electronic set-up (circuit) allowing the fitting of a television peripheral socket for a television receiver without such a socket Download PDFInfo
- Publication number
- FR2591838A2 FR2591838A2 FR8500172A FR8500172A FR2591838A2 FR 2591838 A2 FR2591838 A2 FR 2591838A2 FR 8500172 A FR8500172 A FR 8500172A FR 8500172 A FR8500172 A FR 8500172A FR 2591838 A2 FR2591838 A2 FR 2591838A2
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- FR
- France
- Prior art keywords
- circuit
- socket
- television
- video
- audio
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- 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.)
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/641—Multi-purpose receivers, e.g. for auxiliary information
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Color Television Systems (AREA)
Abstract
Description
La présente demande concerne un certificat d'addition è la demande de brevet d'invention principal N 84/11661 déposé le 23 juillet 1984. Elle a pour objet d'apporter une amelioration an fonctionnement du montage (circuit) électronique très simple et économique destiné à l'adaptation d'une prise péritélévision b un récepteur de teldvision ddpourvu de telle prise afin de permettre sa connection.avec une source extérieure qui peut notre par exemple un micro-ordinateur, un magnétoscope ou meme un décodeur de CANAL PLUS pouvant etre relié au moyen de cette prise. The present application relates to a certificate of addition to the main patent application N 84/11661 filed on July 23, 1984. Its purpose is to bring about an improvement in the operation of the very simple and economical electronic assembly (circuit) intended to the adaptation of a SCART socket b to a television receiver dd provided with such socket in order to allow its connection.with an external source which can for example be a microcomputer, a video recorder or even a CANAL PLUS decoder which can be connected by means of this socket.
Les caractéristiques de l'invention ressortiront de la description donnée ci-aprbs à titre d'exemple non limitatif et illustrée par la figure (fig. 1) annexée qui représente un schéma de montage (circuit) électronique selon l'invention. The characteristics of the invention will emerge from the description given below by way of nonlimiting example and illustrated by the appended figure (fig. 1) which represents an electronic circuit diagram according to the invention.
Ce montage (circuit) électronique a l'avantage de ne pas altérer les signaux R7B-SYNCERO-SON puisque sa fonction est d'une part d'injecter les signaux RVB et d'autre part de réinjecter les signaux audio et vidéo émis par le téléviseur, mais non de les convertir (en UHF, SECAM comme certains modulateurs vendus sur le marché actuellement), dtoW une meilleure qualité de l'image et de son. Par ailleurs, aucune alimentation est nécessaire. This electronic circuit has the advantage of not altering the R7B-SYNCERO-SON signals since its function is on the one hand to inject the RGB signals and on the other hand to reinject the audio and video signals emitted by the TV, but not convert them (to UHF, SECAM like some modulators sold on the market today), dtoW better picture and sound quality. Furthermore, no power supply is required.
Ce montage (circuit) électronique se comporte d'une prise péritélévision (P), de deux résistances fixes (Rtt Ril), de cinq potentiomètres ajustables (R2, RiO, R5, R7 et R9), de quatre condensateurs (ci, 03, 04, et C5), d'un diode (D1) et d'un double inverseur (commutateur à deux positions) (I). This electronic circuit has a SCART socket (P), two fixed resistors (Rtt Ril), five adjustable potentiometers (R2, RiO, R5, R7 and R9), four capacitors (ci, 03, 04, and C5), a diode (D1) and a double inverter (two-position switch) (I).
Ce montage (circuit) électronique sera raccordé au circuit du téléviseur en cinq points précis: les sorties AUDIO, VIDEO et les trois préamplis chroma BLEU, VERT et ROUGE. Lors de son raccordement au cireuit du téléviseur il est impératif d'interrompre la liaison directe des circuits SON et VIDEO et de brancher les fils correspondants. Quant è la chrominance, il convient de brancher les trois fils de sortie (Ab, Av et Ar) provenant respectivement des potentiomètres ajustables R5, R7 et R9 aux amplificateurs chroma correspondants. This electronic circuit will be connected to the television circuit at five specific points: the AUDIO, VIDEO outputs and the three BLUE, GREEN and RED chroma preamps. When connecting to the TV's circuit, it is imperative to interrupt the direct connection of the SOUND and VIDEO circuits and to connect the corresponding wires. As for chrominance, it is advisable to connect the three output wires (Ab, Av and Ar) coming respectively from the adjustable potentiometers R5, R7 and R9 to the corresponding chroma amplifiers.
En audio, il est nécessaire de déconnecter le circuit du téléviseur à l'entrée du potentiomètre volume et d'effectuer le raccordement d'une part du fil S1 du câble blindé au circuit d'arrivée (provenant de la détection
SON du téléviseur) et d'autre part du fil S2 de ce câble blindé è l'entrée du potentiomètre du téléviseur, Il y a lieu de mettre également le blindage de ce câble b le masse. In audio, it is necessary to disconnect the television circuit at the input of the volume potentiometer and to connect a part of the wire S1 of the shielded cable to the incoming circuit (coming from the detection
SOUND of the television) and on the other hand of the S2 wire of this screened cable at the input of the potentiometer of the TV, The screen of this cable should also be grounded.
Le signal AUDIO détecté provenant du téléviseur et sortant aux broches
PI et P3 de la prise péritélévision est également réinjecté dans le circuit du téléviseur lorsque le commutateur I se trouve en position lin. AUDIO signal detected from the TV and output to the pins
PI and P3 from the SCART socket is also fed back into the TV circuit when switch I is in the linen position.
Si ce commutateur I est inversé (position Iex), le signal audio provenant d'une source extérieure (micro-ordinateur ou audio codé) sortant de la broche P1 est acheminé normalement-vers le téléviseur et ce à partir des broches P2 et P6 de la prise péritélévision via la résistance R1 et le condensateur Ct. If this switch I is reversed (position Iex), the audio signal coming from an external source (microcomputer or coded audio) leaving pin P1 is routed normally-to the television and this from pins P2 and P6 of the SCART socket via the resistor R1 and the capacitor Ct.
En vidéo, le processus décrit ci-dessus est identique. En effet, il faut sortir le signal vidéo composite sitôt après sa détection. Pour cela, il convient de couper ce circuit et d'effectuer le raccordement d1une part du fil V1 du câble blindé avant la coupure du circuit et d'autre part du fil V2 de ce câble blindé après cette coupure et enfin de mettre le blindage de ce cible k la masse. In video, the process described above is identical. Indeed, the composite video signal must be output immediately after its detection. For that, it is advisable to cut this circuit and to carry out the connection on the one hand of the wire V1 of the screened cable before the cut of the circuit and on the other hand of the wire V2 of this screened cable after this cut and finally to put the screen of this target k the mass.
Le signal vidéo composite arrive à la fois sur la broche P19 de la prise péritélévision et sur le commutateur I qui le réinjecte ensuite dans le circuit du téléviseur par l'entrée V2 si celui-ei se trouve en position Iin. The composite video signal arrives both on pin P19 of the SCART socket and on the switch I which then re-injects it into the television circuit via the V2 input if it is in the Iin position.
Le diode D1 permet la séparation et la réinjection des signaux vidéo. Le potentiomètre R10 permet l'ajustement du signal vidéo.The diode D1 allows the separation and the reinjection of the video signals. The potentiometer R10 allows the adjustment of the video signal.
La position Iex du commutateur I permet de rentrer le signal vidéo composite par la broche P20 de la prise péritélévision à travers le potentiomètre ajustable R2. The Iex position of switch I allows you to enter the composite video signal by pin P20 of the SCART socket through the adjustable potentiometer R2.
En fonction de l'appareil à brancher (micro-ordinateur, décodeur de
CANAL PLUS,...), on détermine la nécessité du raccordement aux sorties d'amplis chrominance du téléviseur.Depending on the device to be connected (microcomputer, decoder
CHANNEL PLUS, ...), we determine the need for connection to the chrominance amplifier outputs of the television.
En effet* lorsqu'on veut brancher un micro-ordinateur ou un magnétoscope, il est nécessaire de raccorder aux trois sorties d'amplis chrominance du téléviseur les fils Ab (BLEU), Âv (VERT) et Ar (ROUGE) provenant respectivement des potentiomètres ajustables R5, R7 et R9. Indeed * when one wants to connect a microcomputer or a video recorder, it is necessary to connect to the three chrominance amplifier outputs of the television the wires Ab (BLUE), Av (GREEN) and Ar (RED) coming respectively from the potentiometers adjustable R5, R7 and R9.
Le signal chrominance BLEU entre sur la broche P7 de la prise péritélévision pour outre pris en compts par le téléviseur par l'intermédiaire du potentiomètre ajustable R5 et du condensateur C3. The BLUE chrominance signal enters on pin P7 of the SCART socket, which is also taken into account by the television via the adjustable potentiometer R5 and the capacitor C3.
De la meme manière, le signal chrominance VERT est pris en compte par le potentiomètre ajustable R7 et par le condensateur C4 et le signal chrominance
ROUGE R9 et C5. Le signal vidéo rentre par la broche P20 et le signal audio par les broches P2 et P6 de la prise péritélévision. In the same way, the GREEN chrominance signal is taken into account by the adjustable potentiometer R7 and by the capacitor C4 and the chrominance signal
RED R9 and C5. The video signal comes in through pin P20 and the audio signal through pins P2 and P6 of the SCART socket.
Ce montage (circuit) électronique est encore plus simplifié lors du branchement du décodeur de CANAL PLUS puisque les sorties d'amplis chominance du téléviseur ne seront pas utilisées, d'où la suppression possible des potentiomètres ajustables R5, R7, R9 ainsi que les condensateurs C3, C4 et C5. This electronic assembly (circuit) is even more simplified when connecting the CANAL PLUS decoder since the TV's amplifier amplitudes will not be used, hence the possible elimination of the adjustable potentiometers R5, R7, R9 as well as the capacitors C3, C4 and C5.
En effet, puisque le décodeur sert à décoder uniquement les signaux audio et vidéo, le signal audio entre en P2 et P6 de la prise péritélévision et le signal-viddo sortant en P19 pour hêtre décodé par le décodeur de CANAL PLUS est ensuite réinjecteé en P20 de la prise péritélévision.Indeed, since the decoder is used to decode only the audio and video signals, the audio signal enters P2 and P6 from the SCART socket and the viddo signal coming out in P19 for beech decoded by the CANAL PLUS decoder is then reinjected in P20 of the SCART socket.
Il est impératif de placer le commutateur I sur la position Iex pour permettre le branchement d'une source extérieure (micro-ordinateur. décodeur de CANAL PLUS,...),
Les valeurs des résistances, des potentiomètres ajustables et des condensateurs sont données à titre indicatif ci-dessous. Dans certains cas, il y a lieu d'effectuer un réglage de certaines valeurs afin d'obtenir des résultats optimaux en ce qui concerne la qualité du son et de l'image.It is imperative to place the switch I on the Iex position to allow the connection of an external source (microcomputer. CANAL PLUS decoder, ...),
The values of resistors, adjustable potentiometers and capacitors are given for information below. In some cases, certain values may need to be adjusted in order to obtain optimal results with regard to sound and image quality.
Ri: 470 Ohms
R2: 100 Ohms
R5, R7 et R9: 2,2 Kilo-Ohms
R10: 470 Ohms
R11: 4,7 Kilo-Ohms
C1: 0,1 Micro-Farad C3, C4 et C5: 0,22 Nicro-Farad
D1: diode lu4148 ou 1N4149
Le réglage-du bon fonctionnement s'sffectue à partir des potentiomètres ajustables R2, RiO, R5, R7 et R9.Ri: 470 Ohms
R2: 100 Ohms
R5, R7 and R9: 2.2 Kilo-Ohms
R10: 470 Ohms
R11: 4.7 Kilo-Ohms
C1: 0.1 Micro-Farad C3, C4 and C5: 0.22 Nicro-Farad
D1: diode lu4148 or 1N4149
The adjustment of the correct operation is carried out from the adjustable potentiometers R2, RiO, R5, R7 and R9.
Figure pour le texte: fig. 1 Figure for text: fig. 1
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8500172A FR2591838A2 (en) | 1984-07-23 | 1985-01-08 | Method based on a very simple and economical electronic set-up (circuit) allowing the fitting of a television peripheral socket for a television receiver without such a socket |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8411661A FR2568079A1 (en) | 1984-07-23 | 1984-07-23 | Very simple and economic electronic setup (circuit) intended for matching with a television peripheral socket for television receiver devoid of such a socket and enabling the teleceiver to be connected up to an external source |
FR8500172A FR2591838A2 (en) | 1984-07-23 | 1985-01-08 | Method based on a very simple and economical electronic set-up (circuit) allowing the fitting of a television peripheral socket for a television receiver without such a socket |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2591838A2 true FR2591838A2 (en) | 1987-06-19 |
Family
ID=26224074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8500172A Pending FR2591838A2 (en) | 1984-07-23 | 1985-01-08 | Method based on a very simple and economical electronic set-up (circuit) allowing the fitting of a television peripheral socket for a television receiver without such a socket |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2591838A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2637437A1 (en) * | 1988-10-04 | 1990-04-06 | Asahi Optical Co Ltd | FIXED VIDEO PHOTOGRAPHIC CAMERA |
EP0432676A2 (en) * | 1989-12-13 | 1991-06-19 | EDICO S.r.l. | Descrambling accessory for television signal receiver |
GB2242591A (en) * | 1990-03-29 | 1991-10-02 | Amstrad Plc | Television receiver/decoder for scrambled broadcast reception |
-
1985
- 1985-01-08 FR FR8500172A patent/FR2591838A2/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2637437A1 (en) * | 1988-10-04 | 1990-04-06 | Asahi Optical Co Ltd | FIXED VIDEO PHOTOGRAPHIC CAMERA |
US5097344A (en) * | 1988-10-04 | 1992-03-17 | Asahi Kogaku Kogyo Kabushiki Kaisha | Apparatus for recording and playing back still video images |
EP0432676A2 (en) * | 1989-12-13 | 1991-06-19 | EDICO S.r.l. | Descrambling accessory for television signal receiver |
EP0432676A3 (en) * | 1989-12-13 | 1991-11-27 | Societa Italiana Per Lo Sviluppo Dell'elettronica S.I.Sv.El S.P.A. | Descrambling accessory for television signal receiver |
GB2242591A (en) * | 1990-03-29 | 1991-10-02 | Amstrad Plc | Television receiver/decoder for scrambled broadcast reception |
GB2242591B (en) * | 1990-03-29 | 1994-01-26 | Amstrad Plc | Television decoders and receivers |
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