Video disk with multiplexed video and digital information

• US 4,782,402 A
• Filed: 03/16/1987
• Issued: 11/01/1988
• Est. Priority Date: 03/14/1986
• Status: Expired due to Fees

• Current Assignee: Pioneer Electronics (USA) Incorporated (Pioneer Corporation)
• Original Assignee: Pioneer Electronics (USA) Incorporated (Pioneer Corporation)
• Inventors: Kanamaru, Hitoshi
• Primary Examiner(s): RICHARDSON, ROBERT
• Application Number:
  US07/026,329
• Time in Patent Office: 596 Days
• Field of Search: 358/341, 358/342, 358/343, 358/335, 360/19.1, 360/35.1, 360/9.1, 360/33.1, 360/36.2, 360/39
• US Class Current: 386/337
• CPC Class Codes: H04N 5/9206 the additional signal being a character code signal
• CPC Class Codes: H04N 9/802 involving processing of the sound signal H04N9/806, H04N9/835 take precedence
• CPC Class Codes: H04N 9/8222 using frequency division multiplex

Abstract

A recording and reproducing device for frequency division multiplexing of a television video and a digital data signal. The digital signal is interleaved in blocks so that the length of an interleaved block is longer than a video field but shorter than a video frame. The interleaved digital data is recorded so that an end of a group of blocks corresponds to a vertical synchronizing signal for the video signal.

Claims

1. A video disk having recorded thereon in frequency division multiplex a television video signal and a digital data signal, wherein said recorded television video signal comprises a series of frames, each frame comprising a plurality of fields having a vertical synchronizing signal at one end thereof:

wherein said recorded digital data signal is divided into blocks each consisting of a prescribed number of bits and is interleaved, thereby having a recorded length after interleaving longer than one of said fields and shorter than one of said frames; and

wherein an end of said interleaved digital data signal is recorded at a fixed position before one of said vertical synchronizing signals of said recorded television signal.

2. A recording device for a television video signal and a digital data signal, said television video signal comprising a series of frames, each frame being divided into fields with a vertical synchronizing signal located in each field, said digital data signal being divided into blocks each consisting of a prescribed number of bits, said device comprising:

means for modulating said television video signal;

means for interleaving said blocks whereby a length of one of said a interleaved blocks is longer than a length of one of said fields and shorter than a length of one of said frames;

means for detecting said vertical synchronizing signal;

means for disposing said interleaved blocks so that an end of one or more interleaved blocks is placed before a vicinity of a position of said detected vertical synchronizing signal;

means for combining said modulated television video signal and said disposed blocks of said digital data signal; and

means for recording an output of said combining means on a video disk, whereby said television video signal and said digital data signal are recorded in frequency division multiplexing on a same track of said video disk.

3. A reproduction device for a television video signal and a digital data signal, said television video signal comprising a series of frames, each frame being divided into fields with a vertical synchronizing signal located in each field, said digital data signal being divided into blocks each consisting of a prescribed number of bits and being interleaved, whereby a length of said interleaved block is longer that a length of one of said fields and shorter than a length of one of said frames, said television video signal and said interleaved digital data signal being recorded in time division multiplexing on a same track of a video disk, an end of the recorded digital data signal comprising one or more blocks being recorded before the vicinity of a position of said vertical synchronizing signal, said device comprising:

.

means for producing a reproduction signal from a track of a video disk;

filter means for separating said television video signal and said digital data signal from said reproduction signal;

means for reproducing continuously a plurality of said blocks of said digital data signal from their beginning to their end; and

means for reproducing at least one of said frames of said television video signal recorded after one of said vertical synchronizing signals located a fixed position relative to said beginning of said blocks and recorded before a prescribed position of said video signal located after said end of said blocks.

4. A reproduction device for a television video signal and a digital data signal, said television video signal comprising a series of frames, each frame being divided into fields with a vertical synchronizing signal located in each field, said digital data signal being divided into blocks each consisting of a prescribed number of bits and being interleaved, whereby a length of said an interleaved block is longer that a length of one of said fields and shorter than a length of one of said frames, said television video signal and said interleaved digital data signal being recorded in time division multiplexing on a same track of a video disk, an end of the recorded digital data signal comprising one or more blocks being recorded before the vicinity of a position of said vertical synchronizing signal, said device comprising:

means for producing a reproduction signal from a track of a video disk;

filter means for separating said television video signal and said digital data signal from said reproduction signal;

means for reproducing continuously a plurality of said blocks of said digital data signal from the beginning to the end of said plurality of said blocks;

means for detecting a beginning and an end of a first group consisting of a prescribed number of fields of said television video signal, said first group corresponding to said reproduced plurality of blocks of said digital data signal; and

means for squelching said television signal when said reproducing means is reproducing blocks of said digital data signal recorded in a section of said track of said video disk other than a section in which is recorded said first group from its said beginning to its said end.

5. A reproduction device for a television video signal and a digital data signal, said television video signal comprising a series of frames, each frame being divided into fields with a vertical synchronizing signal located in each field, said digital data signal being divided into blocks each consisting of a prescribed number of bits and being interleaved, whereby a length of said an interleaved block is longer that a length of one of said fields and shorter than a length of one of said frames, said television video signal and said interleaved digital data signal being recorded in time division multiplexing on a same track of a video disk, an end of the recorded digital data signal comprising one or more blocks being recorded before the vicinity of a position of said vertical synchronizing signal, a plurality of serially adjacent blocks corresponding to a group of a predetermined number of fields of said television signal, said device comprising:

means for producing a reproduction signal from a track of a video disk;

filter means for separating said television video signal and said digital data signal from said reproduction signal;

means for reproducing continuously a plurality of said blocks of said digital data signal from the beginning to the end of said plurality of said blocks;

means for detecting a beginning and an end of a first one of said groups of said television video signal, said first group corresponding to said reproduced plurality of blocks of said digital data signal;

means for repetitively reproducing at least one frame located between said detected beginning and said detected end of said television video signal;

a memory having a storage capacity not smaller than the contents of at least one block of said digital data signal; and

means for storing in said memory on different repetitive operations of said repetitive reproducing means sequential ones of said blocks of said digital data signal.

6. A recording method for a television video signal and a digital data signal, said television video signal comprising a series of frames, each frame being divided into fields with a vertical synchronizing signal located in each field, said digital data signal being divided into blocks each consisting of a prescribed number of bits, said method comprising the steps of:

modulating said television video signal;

interleaving said blocks whereby a length of one of said interleaved blocks is longer than a length of one of said fields and shorter than a length of one of said frames;

detecting said vertical synchronizing signal;

disposing said interleaved blocks so that an end of one or more interleaved blocks is placed before a vicinity of a position of said detected vertical synchronizing signal;

combining said modulated television video signal and said disposed blocks of said digital data signal; and

recording an output of said combining step on a video disk, whereby said television video signal and said digital data signal are recorded in frequency division multiplexing on a same track of said video disk.

7. A reproduction method for a television video signal and a digital data signal, said television video signal comprising a series of frames, each frame being divided into fields with a vertical synchronizing signal located in each field, said digital data signal being divided into blocks each consisting of a prescribed number of bits and being interleaved, whereby a length of said interleaved block is longer that a length of one of said fields and shorter than a length of one of said frames, said television video signal and said interleaved digital data signal being recorded in time division multiplexing on a same track of a video disk, an end of the recorded digital data signal comprising one or more blocks being recorded before the vicinity of a position of said vertical synchronizing signal, said device comprising:

producing a reproduction signal from a track of a video disk;

separating said television video signal and said digital data signal from said reproduction signal;

reproducing continuously a plurality of said blocks of said digital data signal from their beginning to their end; and

reproducing at least one of said frames of said television video signal recorded after one of said vertical synchronizing signals located a fixed position relative to said beginning of said blocks and recorded before a prescribed position of said video signal located after said end of said blocks.

8. A reproduction method for a television video signal and a digital data signal, said television video signal comprising a series of frames, each frame being divided into fields with a vertical synchronizing signal located in each field, said digital data signal being divided into blocks each consisting of a prescribed number of bits and being interleaved, whereby a length of said an interleaved block is longer that a length of one of said fields and shorter than a length of one of said frames, said television video signal and said interleaved digital data signal being recorded in time division multiplexing on a same track of a video disk, an end of the recorded digital data signal comprising one or more blocks being recorded before the vicinity of a position of said vertical synchronizing signal, said method comprising the steps of:

producing a reproduction signal from a track of a video disk;

separating said television video signal and said digital data signal from said reproduction signal;

reproducing continuously a plurality of said blocks of said digital data signal from their beginning to their end;

detecting a beginning and an end of a first group consisting of a prescribed number of fields of said television video signal, said first group corresponding to said reproduced plurality of blocks of said digital data signal; and

squelching said television signal when said reproducing step is reproducing blocks of said digital data signal recorded in a section of said track of said video disk other than a section in which is recorded said first group from its said beginning to its said end.

9. A reproduction method for a television video signal and a digital data signal, said television video signal comprising a series of frames, each frame being divided into fields with a vertical synchronizing signal located in each field, said digital data signal being divided into blocks each consisting of a prescribed number of bits and being interleaved, whereby a length of said an interleaved block is longer that a length of one of said fields and shorter than a length of one of said frames, said television video signal and said interleaved digital data signal being recorded in time division multiplexing on a same track of a video disk, an end of the recorded digital data signal comprising one or more blocks being recorded before the vicinity of a position of said vertical synchronizing signal, a plurality of serially adjacent blocks corresponding to a group of a predetermined number of fields of said television signal, said method comprising the steps of:

producing a reproduction signal from a track of a video disk;

separating said television video signal and said digital data signal from said reproduction signal;

reproducing continuously a plurality of said blocks of said digital data signal from their beginning to their end;

detecting a beginning and an end of a first one of said groups of said television video signal, said first group corresponding to said reproduced plurality of blocks of said digital data signal;

repetitively reproducing at least one frame located between said detected beginning and said detected end of said television video signal; and

storing in a memory on different repetitive operations of said repetitive reproducing steps sequential ones of said blocks of said digital data signal, said memory having a storage capacity not smaller than the contents of at least one block of said digital data signal.