FR2495871A1 - METHOD AND DEVICE FOR RECORDING AND USING INFORMATION INDEX IN VIDEO RECORDING - Google Patents

Abstract

A.PROCEDURE AND DEVICE FOR RECORDING AND USING AN INFO IN A VIDEO RECORDING. B. DEVICE INCLUDING A CONTROL UNIT 4 WITH MEMORY 5, COMPUTING UNIT 6, KEYBOARD 7 AND DISC DRIVE 1 FOR ENTERING INTO MEMORY 5 A CLUE RECORDED ON VIDEO DISC 8 FOR SEARCH WORDS AND CORRESPONDING SEQUENTIAL NUMBERS. C. THE INVENTION APPLIES TO READING SEQUENTIAL INFORMATION.

Description

The present invention relates to a method and a device for

save and use a

  information index in a video recording.

  Video recordings have recently developed for the storage of information; these recordings comprise, for example, still images, moving images, sound, text, s2-.quer_: es of binary numbers, etc. We know different systems

  of registration and of.Swimming of information.

  However, the different systems have the common disadvantage of recording the information on a medium in grooves. The number of paths is very large and the amount of information that it is possible

to record is considerable.

  As an example, the system developed by PHILIPS Data Systems B.V. in Holland concerns a disk with a diameter of 30 cm which makes it possible to record 1010 bits of information. This corresponds to approximately 500,000 typewritten pages. Another version of the same disk contains

000 still images on each side.

  The video disc is intended to be played in a video disc player which includes control facilities for adjusting the playhead so that it can scan the desired information recorded on the disc. Such a control installation is limited by the knowledge of information in the form of a sequence of numbers, to adjust the reading head in the position

corresponding to the number.

Given the amount of

  information that can be recorded on a single video disc, this medium is extremely suitable, eg for information such as books, reference work of editing programs, etc.

  other information requiring quick access.

  Known techniques for solving this problem are to connect the video disc to a computer that translates the series of numbers recorded on the computer.

  disk to give some alphabetic code or vice versa.

  A memory medium is thus coupled to the computer to provide information relating to the content of the different video discs. The information of the different video discs may possibly be constructed according to a certain system, in which case the code system which applies to the different recording discs is recorded in the computer memory. A significant disadvantage of this known technique is that it is necessary to program the computer and that it is necessary to have information in memory for certain determined empty discs. For this reason, this technique can only be used for particular types of information such as information in the form of data or information which, from one disc to another, are constructed in the same way,

  for example the recording of a number of

  of music with which the moving images of

the orchestra.

As characteristic information

  that of each video disc, there is for example a reference work which is recorded on a video disc. However, there is still a great difficulty because the key words are distributed in Go'dre: 1phabétique or alphanum-e rique while 1''crméati: 'conRenue in the video disc

  is nursery distributed.

  It is not possible, by knowing the key word concerned, to locate quickly

  the information corresponding to this snot on video disc.

This problem exists for everything

  type of information recorded on a video disc, the information

  The invention itself is designed to create a simple solution to this problem by using these techniques in hard disks, which can not be distributed in a strictly numerical order, allowing the use of search words or key words. video, directly, even for

  searches like those in the examples above.

  For this purpose, the invention relates to a method for recording and using an information index on a video disc, wherein the information is sequentially encoded with a number for each image or series of sound images. combinations, this process was characterized by:

  search words (keywords) and sequential numbers

  associated with being recorded as an integral part of the video disc, this index being read into a memory of a

  control unit before the use of the information

  stored, this control unit being connected to the video disk player and allowing by manual action or mechanical indication of the search word, for example using a keyboard associated with the control unit, to create an associated sequential number to the keyword and, by this number, to operate

  the video disc player to directly locate the information

  tion identified by the sequential number on the video disc.

  The invention also relates to a device characterized by a control unit having a memory, a computing unit and a keyboard cooperating with the video disk player to provide the memory with an index recorded in the "video" disk, which index contains the times the search words and sequential numbers associated with the information of the video disc and the control unit allows the reception of the keyboard signals corresponding to the search words introduced by the keyboard, to produce from the memory and using the calculation unit, a sequential number associated with the search word and thus emit a signal corresponding to this number to send it to the video disk player so that it locates on the disk

  video the information associated with that sequential number.

  The present invention will be described in more detail with the aid of the single attached figure which is

  a block diagram of a device according to the invention.

  According to the figure, the block diagram shows in the upper block 1, a video disk player

  formed of a disk drive 2 and a control unit 3.

  The parts corresponding to block 1 belong to the prior art. The figure also shows a lower block 4 surrounded by a broken line; block 4 comprises a memory control unit 5, a calculation unit 6 and a keyboard 7. The device according to the invention

  allows you to record and use an index for information

  mations of a video disc 8; information is recorded

  sequentially on the disk 8, a number being associated with each image or series of images, sounds or combination of these elements. Sequential storage means that each part of the whole information of the disc is combined with a number which is inscribed in connection with the information or which indicates for example the groove counted from outside and in which is recorded the information. The number series is

  logically constructed as to the position of the information

on the video disc.

  The control unit 4 makes it possible to cooperate via the cables 9 with the reader of

  videoclip 1 or an integral part of it.

  According to the invention, an index concerning the information of the video disk is recorded on

the video disc in the making.

The control unit 4 can introduce

  This index contains search words and sequential numbers associated with them and belonging to specific information recorded on the disc. A read head 10 reads the index when it receives the instruction from the calculation unit 6; this also makes it possible to control the entry into the memory 5, which is

a RAM RAM ..

  When the information that one wants to read on the video disc is in a first phase, the index recorded according to the method of the invention is read on the video disc. This index corresponds to the information recorded on the disc. The reading of the index is preferably done automatically on instruction of the computing unit before scanning any information

recorded on the video disc.

  The keyboard 7 is provided for the manual insertion of the search words or corresponding elements to the control unit 4, to receive the keyboard signals corresponding to a search word introduced to provide the control of the calculation unit 6, and from the memory 5, the sequence number

associated with the search word.

  Then the control unit 4 transmits by the driver 9 a signal corresponding to the number for the video disk player 1 so that with the aid of its control unit 3, the reader locates the information on the video disk to sequential number and reads

this information.

The computing unit 6 is a micro-

  computer or a microprocessor having a program in memory.

  The memory 5 is a RAM memory whose capacity is selected in a preferred manner so that only the index of one video disc at a time remains in memory. Thus, the goal is to keep in memory only the index which is of immediate interest, ie the index recorded on the

  disk put on the disk drive.

  The components of the control unit 4 are well known per se and will not be described

in detail.

The process according to the invention

  for the registration and use of an information index

  in a video recording with sequential storage can be divided into two phases, ie a first phase during which the video disc information is

recorded on the video disc.

  This index is composed as already indicated of search words or corresponding elements and associated sequential numbers. The word "search word" (or key word) is understood in the broadest sense; it can be a dictionary word, a code and / or alphanumeric combinations. The expression 'number' means number in the address or re-registration sense

of a datum.

  According to a preferred embodiment, the index is recorded in the grooves of the

first program of the video disc.

  During the second phase of the method, the index is read in the control unit 4 associated with the memory 5 when the video disc is placed on the video disk player. The index is used according to the invention by transforming the search word introduced via the keyboard, using the calculation unit 6 and the memory of the control unit 4 into a sequential number which command the video disk drive 'to locate directly on the

  disc, the information corresponding to this number.

  For example, the content of a reference book can be recorded in alphabetical order on a video disc, and for that reason each title or subject is associated with a number that consists of a series of digits. Information relating for example to the word "disk"

  is as an example at memory position 94031.

  the information relating to the word "video" is found for example at the memory position 138384. The word following the expressiou "disk" is at the memory position 94032 and the word that precedes the term "video" is located at the memory position

138383.

  The index in this example contains all the words and numbers associated with one of them. When a person introduces the word "disk" using the keyboard, the number corresponding to this word, that is to say 94031 is searched in the memory 5. This number is the address of the relative information. the word "disk" and thus to the control signal of the

  disk drive to read the information.

  As it appears above, the index is recorded on the corresponding video disc and

  is thus fully associated with the content of the video disc.

  This is why it is thus easy thanks to the invention to automatically find the desired information on an arbitrarily chosen video disc. This is not the case in

  the example given in the preamble, for systems in the-

  information about a large number of video discs is recorded according to a particular system

  facilitate the search for information.

  It is thus possible thanks to the invention to record and use the video disc information of virtually any type and thus to have quick access to certain parts of the recorded information.

Claims (3)

CLAIMS i) A method of recording and using an index for the information of a video disc on which the information is recorded sequentially, with a number associated with each image or series of images, its or combinations, characterized in that an index containing both the search words and the coupled order numbers is recorded in a part of the video disk, this index being read in a memory of a control unit connected to the a video disc player before the use of the recorded information on the disc, this control unit allowing manual intervention or mechanical indication of a search word, for example using a keyboard associated with the control unit, to produce from the memory a sequential number associated with the search word and by this number, to implement the video disk player to directly position the information identified by the num ro sequential on the video disc. Method according to claim 1, characterized in that the index is recorded in the first program grooves of the video disc. 3) Process according to any one   claims 1 and 2, characterized in that the index   is constructed in such a way that the search words are organized   in alphabetical order or alphanumeric order of sequential numbers. 4) Device for recording   the use of an index for the information   stored on a video disc, the information being recorded sequentially with association of a number with each image or series of images, sounds or combinations, characterized by a control unit (4) with memory (5), a unit of calculation (6) and a keyboard (7) cooperating with the disk player (1) and making it possible to introduce into the memory (5) an index recorded on the video disk (8), this index containing both the words of search and sequential numbers associated with the information of the video disc (8) and the control unit (4) pelcasts upon receipt of the keyboard signals (7)   corresponding to the search word introduced, to produce   from the memory (5) and using the calculating unit (6) a sequential number associated with the search word and thereby emitting a signal corresponding to this number for the video disk player (1), in order to locate on the video disc   the information associated with the sequential number.   5) Device according to claim 4, characterized in that the memory (5) is a memory   RAM to hold simultaneously the indexes   only glided on a video disc (8). ) Device according to any one   than claims 4 and 5, characterized in that the unit   control unit (4) allows the start of the video disk player (1) to transmit a signal to the reader, this signal being such that the video disk player (1) scans the indices before scanning any recorded information on the video disc (8).