FR2616952A1 - INSTALLATION FOR REPRODUCING DATA FROM AN OPTICAL DISK - Google Patents

Abstract

The installation comprises a compact disc player 1, a tele-computer terminal 4, an audio reproduction device 10 and an interface box 24. The latter combines a microprocessor 19, electronic interfaces 17 and 21, an adapter 7 for the signals. intended for display by screen and a routing device 8, the assembly being controlled from a control device 14 of the tele-computing terminal. The installation according to the invention and the compact disc that can be used therein make it possible to reproduce in an addressable manner, for example 1500 pages with 40 columns and 25 lines accompanied by a sound recording of 75 minutes from an audio format compact disc. .

Description

 The present invention relates to an installation for reproducing data recorded in digital form on an optical disk. It also relates to an optical disk reproducible in such an installation.

 Optical discs carrying a nu metric recording are known under the designation "Compact Disc" (CD) and are marketed in a standardized form on a very large scale as sound recording media.

Players of such audio CD discs are therefore also widely available. On the other hand, teleinformatics is gaining an ever wider audience, especially with the introduction of relatively cheap and inexpensive terminals, a representative of which is in France the "Minitel". A description of the latter device can be found, for example, in the brochure "Technical Specifications for the Use of Minitel IB" published by the Ministry. Posts and
Telecommunications (Télétel) in November 1986, the content of which forms an integral part of this description.

 The invention aims to provide an installation for the reproduction of data, especially in visual form but also in sound form, using audio record players and audio equipment, as well as existing tele-computer terminals.

More particularly, the invention proposes to implement the device for actuating and controlling the tele-computing terminal and the remote control of the disk reader for addressing so as to allow the selective reproduction of information from the recording medium.

 In this context, the invention also aims to provide compact discs carrying visual information and preferably also sound, the visual information being recorded in a form compatible with the tele-computer standard of the terminal apparatus used.

 The installation according to the invention is firstly characterized in that it comprises an optical disk reader having at least a first and a second signal output, a telecommunication terminal having at least a first input of. signals and first connection means for connecting at least the first output of the disk drive to the first input of the terminal so as to allow visual reproduction of data recorded on the disk.

According to a preferred embodiment, the installation further comprises a sound reproducing device having at least one signal input as well as second connection means for connecting at least the second output of the disk drive to said input of the device. sound reproduction so as to allow the sound reproduction of data recorded on the disc.

 The tele-computer terminal comprising a device for decoding and displaying information received said first connection means may, according to one embodiment of the invention, be constituted by substantially passive means. In this case, the optical disk according to the invention comprises a recording organized in a number of tracks, the different tracks being delimited by address marks for addressing by the disk player, each track containing at least one record. images to a standard tele-computer usable by the terminal. Preferably, the recording comprises at least two channels, a first channel including said image records and a second channel having sound recordings.

 According to a preferred embodiment of the installation according to the invention, said first connection means comprise a signal processing device appearing at the first output of the disk drive. More particularly, in an installation in which the disk drive comprises a remote control device and the telecommunication terminal comprises an actuating and control device, and a corresponding control signal output, the third connection means are provided for connecting said output of the actuator and control device to an input of the remote control device of the disk player. These third connection means preferably comprise at least one interface device for adapting the control signals to the remote control device of the disk player. On the other hand, said first and third connection means preferably comprise a microprocessor for the processing of the disk. information contained in the control signals from the computer terminal for remote control of the disk player and the control of said first connection means.

 The optical disk according to the invention reproducible in the latter installation comprises a recording organized in ranges defined by pins for addressing p-ar through the third connection means from the device for actuating and controlling the television terminal. - Computer, these ranges comprising control instructions for the computer terminal and at least one image recording in the form of frequency-modulated and compatible signals of a tele-computing standard usable by the terminal. The recording on such a disc preferably comprises at least two channels, a first channel comprising said picture recordings and control instructions and a second channel having sound recordings.

The invention will be better understood in the light of the description given hereinafter of a nonlimiting exemplary embodiment, illustrated in the accompanying drawing in which
Figure 1 is a single block diagram of an embodiment of an installation according to the invention.

 According to this diagram, the installation comprises on the one hand a disk drive 1 in the form of an audio compact disk player, having in particular two signal outputs 2 and 3 which respectively correspond to the right and left channels of an audio recording. , and a remote control input 23.

Output 3 is connected via line 12 to an input 11 of a channel of audio equipment, i.e. essentially an amplifier and a loudspeaker.

On the other hand, the installation comprises a computer terminal 4 which notably has a device for decoding and displaying the received information 13, for example the screen module of the "Minitel" terminal, and an actuating and control device 14 such as the keyboard module of said terminal. These devices are connected by connecting means which can be joined, apart from simple lines in an interface box 24.

 In the housing 24 is an adapter 7 connected by a line 6 to the output 2 of the disk drive and further connected at its output, by a connection 25, to a switching device 8. The output of the latter is connected by a line 9 to an input 5 of the screen module 13.

The actuation and control device represented in this example by the keyboard module 14 of the Minitel terminal 4 is connected by an output 15 by means of a line 16 to an interface device 17 itself connected by a connection 18 to a terminal. microprocessor 19. The latter interprets the data it receives and transmits them on the one hand via a connection 20 to an interface device 21 connected by a line 22 to the remote control input 23 of the reader. discs 1 and control on the other hand, via a connection 26, the switching device 8 forming part of said first disconnecting means.

 The information recorded on the compact disc used in the context of the installation according to the present embodiment of the invention is for example organized in 1500 ranges addressable by the keyboard of the terminal "Minitel", each range corresponding to a page of screen of 40 columns and 25 lines. The alphanumeric or graphic characters thus recorded on the right channel of the audio-type compact disc are, for example, those specified in the standard given in the aforementioned "Minitel" brochure.

Each page corresponds to three seconds of recording on the disk, the first 500 ms being for example reserved for the connection and initialization protocol of the terminal screen and the other 2.5 seconds for the recording of the image and possibly a disconnection order.

 The left channel of the compact disc is for sound recording, for example comments or musical accompaniments recorded in compatible digital audio technique of the existing audio CD standard.

 The data defining the alphanumeric or graphical characters of the channel 3 are recorded according to a compatible standard of the tele-computing standard usable by the tele-computer terminal. The signals are received by the adapter 7 of the interface box and the signal is then applied via the inter: switch of the switching device 8 to the input 5 constituted in this example by a peri-computing plug of the module. screen 13 of the terminal 4. The routing authorization is provided to the device 8 by the microprocessor 19 after receiving specific information recognized by a digital correlator. The protocol, residing entirely in the microprocessor program memory 19, and the switchable electronic interfaces 17 and 21 are adapted to the reader and terminal devices used.

 In the present example, using an audio CD player with a remote control jack and the possibility of programming by tracks and indexes, as well as a "Minitel" terminal, the drive control signals of the reader are transmitted at a speed of 4800 bauds. at the interface 17, the frequency-modulated data appearing at the output 2 of the disk drive being transmitted by said first connection means 6, 7, 25, 8, 9 also at 800 bauds. It should also be noted that the interpretation of the commands from the keyboard module of the terminal "Minitel" is always a priority for the microprocessor 19 before any other action of all connection means.

 It will be obvious to those skilled in the art that the installation described above as an example may be modified and adapted according to the equipment available and the standards to be used. It may also be realized, in the context of the present invention, a simplified installation in which the audio CD player is connected by a simple passive connector to a computer terminal of the "Minitel" type. In such a case, reading the image recordings of the right channel of the compact disc allows uninterrupted scrolling of images, transmitted for example at 1200 baud via the MODEM socket of the "Minitel" terminal. The sound is recorded again on the left channel in digital form to the standard audio CD. The data can be organized in this case, in 99 tracks of 40 seconds, each addressable by the audio CD player. A first track will generally be reserved for displaying a menu, while the other tracks may each contain four 7IDEOTEX standard images according to the aforementioned brochure, as well as sound recording in audio CD quality plus terminal disconnect characters. "Minitel" for a stop on 1'imag.

 Other possibilities and modifications of the embodiments of the invention described above as examples will be within the abilities of those skilled in the art and will be within the scope of the present invention.

Claims (11)

 1 - Installation for reproducing data recorded in digital form on an optical disk, characterized in that it comprises a reader (1) of optical disks having at least a first (2) and a second (3) signal outputs, a telecommunication terminal (4) having at least a first signal input (5), and first connection means. (6,7,8,9) for connecting at least the first output of the disk drive to the first input of the terminal so as to allow visual reproduction of data recorded on the disk.  2 - Installation according to claim 1, characterized in that it further comprises a sound reproducing device (10) having at least one signal input (11), and second connection means (12) for connecting to the least the second output (3) of the disk player to said input of the sound reproduction device so as to allow the sound reproduction of data recorded on the disk.  3 - Installation according to one of claims 1 or 2, characterized in thatthe tele-computer terminal (4) comprises a device (13) for decoding and viewing information received, said first connection means (6.9 ) being essentially passive means.  4 - reproducible digital recording optical disk in an installation according to one of claims 1 to 3, characterized in that it comprises a recording organized in a number of tracks, the different tracks being delimited by addressing marks allowing addressing by the disk player, each track containing at least one image record to a tele-computer standard usable by the terminal.  5 - Disk according to claim 4, characterized in that the recording comprises at least two channels, a first channel comprising said image records and a second channel with sound recordings.  6 - Installation according to one of claims 1 or 2, characterized in that said first connection means comprise a device (7,8) for processing signals appearing at the first output (2) of the disk drive.  7 - Installation according to one of claims 1, 2 or 6 wherein the disk drive comprises a remote control device and the computer terminal comprises an actuating device and a corresponding control signal output, characterized in that it comprises third connection means (16-, 17, 18, 19, 20, 21, 22) for connecting said output (15) of the actuating and controlling device (14) to an input (23). ) of the remote control device of the disc player.  8 - Installation according to claim 7, characterized in that said third means. connection means comprise at least one interface device (21) for adapting the control signals to the remote control device of the disk player.  9 - Installation according to one of claims 7 or 8, characterized in that said first and third connection means comprise a microprocessor (19) for processing the information contained in the control signals from the computer terminal in view of the remote control of the disk player and a command of said first connection means.  10 - optical disc reproducible digital recording in an installation according to one of claims 6 to 9, characterized in that it comprises a registration organized in ranges defined by marks for addressing via the third connection means from the device for operating and controlling the computer terminal, these ranges comprising control instructions for the tele-computer terminal and at least one image recording in the form of compatible signals of a teleinformatic standard usable by the terminal.  11 - optical disk according to claim 10, characterized in that the recording comprises at least two channels, a first channel comprising said image records and control instructions and a second channel with sound recordings.