Method for recording and reproducing video format signal

• US 4,680,647 A
• Filed: 09/26/1984
• Issued: 07/14/1987
• Est. Priority Date: 09/26/1983
• Status: Expired due to Fees

• Current Assignee: Pioneer Electronic Corporation (Pioneer Corporation)
• Original Assignee: Pioneer Electronic Corporation (Pioneer Corporation)
• Inventors: Moriyama, Yoshiaki
• Primary Examiner(s): MCELHENY JR, DONALD E
• Application Number:
  US06/654,694
• Time in Patent Office: 1,021 Days
• Field of Search: 360/19.1, 360/32, 360/33.1, 360/48, 360/49, 360/72.2, 358/342, 358/343, 358/335
• US Class Current: 386/316
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/3054 Vertical Interval Time code [VITC]
• CPC Class Codes: H04N 2201/3264 of sound signals
• CPC Class Codes: H04N 5/9267 using time division multiplex of the PCM audio and PCM video signals

Abstract

A method for recording and reproducing a video format signal on and from a recording medium. A two-dimensional screen is divided based on the video format signal into a plurality of blocks with one of them being divided into a plurality of subblocks, and video information or information compressed on a time basis is inserted into each of the subblocks. Video information and control information are inserted in the remaining blocks while recording the information on the recording medium. The information in at least one of the subblocks is written into memory in a reproduction mode, and thereafter the information in the at least one subblock is read out of the memory while expanding the information on a time basis, and simultaneously writing the information next to the information in the at least one subblock into the memory, whereby the information in the at least one subblock and the next information can successively be reproduced.

Claims

1. A method of recording a video format signal of the type having a plurality of successive line signal portions, with each line signal portion including a horizontal synchronizing signal portion followed by an information signal portion, said video format signal corresponding to a two-dimensional image of a plurality of lines and containing digital data having a predetermined clock timing and synchronizing signals for determining synchronizing timing for detecting said digital data, said method comprising the steps of:

dividing said two-dimensional image into a plurality of blocks each containing at least one line;

generating said video format signal with said digital data included in the information signal portion of said video format signal corresponding to a first of said blocks and with synchronizing signals for determining the synchronizing timing for detecting said digital data in the information signal portion of said video format signal corresponding to a second of said blocks; and

recording said video format signal on a recording medium.

2. The method according to claim 1, further comprising the step of inserting a clock signal synchronous with said clock timing for said digital data in said second block.

3. The method according to claim 1, further comprising the step of inserting into a third of said blocks a control signal for processing the data contained in said first block.

4. A method of recording and reproducing a video format signal of the type having successive frames each made up of plural fields and each field having a plurality of successive lines, with each line including a horizontal synchronizing signal portion followed by an information signal portion, said video format signal containing digital data having a predetermined clock timing and synchronizing signals for determining synchronizing timing for detecting said digital data, said method comprising the steps of:

dividing a field into a plurality of blocks each containing at least one line;

generating said video format signal with said digital data included in the information signal portion of the at least one line in a first of said blocks and with synchronizing signals for determining the synchronizing timing for detecting said digital data in the information signal portion of the at least one line in a second of said blocks;

recording said video format signal on a recording medium;

reading said video format signal from said recording medium; and

reproducing said digital data from the read video format signal while synchronizing said digital data in accordance with the synchronizing signals included in the read video format signal.

5. The method according to claim 4, said generating step further comprising the step of inserting into said second block a clock signal synchronous with said clock timing for said digital data and recording said second block onto said recording medium.

6. The method according to claim 4, said generating step further comprising the steps of inserting into a third of said blocks a control signal for processing said digital data in said first block and recording said first block onto said recording medium, and said reproducing step including the step of processing said digital data under the control of said control signal.

7. A method of recording a video format signal of the type having successive frames each made up of plural fields and each field having a plurality of successive lines, with each line including a horizontal synchronizing signal portion followed by an information signal portion, said video format signal containing video information corresponding to the image to be displayed, digital data, and control information for identifying a predetermined position of at least one of said video information and said digital data, said method comprising the steps of:

dividing at least one of said plural fields into a plurality of blocks each having at least one line;

generating said video format signal with information signal portions in a first block including said digital data, information signal portions in a second block including said video information, and information signal portions in a third block including said control information; and

recording said video format signal on a recording medium.

8. The method according to claim 7, wherein said control information comprises a signal indicative of a position where said video information starts and a position where digital data starts following the video information.

9. The method according to claim 7, wherein said control information comprises a signal indicative of a position where said digital data ends and a position where said video information ends following the digital data.

10. A method of recording and reproducing a video format signal of the type having successive frames each made up of plural fields and each field having a plurality of successive lines, with each line including a horizontal synchronizing signal portion followed by an information signal portion, said video format signal containing video information corresponding to the image to be displayed, digital data, and control information for identifying a starting position of at least one of said video information and predetermined digital data, said method comprising the steps of:

dividing at least one of said plural fields into a plurality of blocks each having at least one line;

generating said video format signal with information signal portions in a first block including said digital data, information signal portions in a second block including said video information, and information signal portions in a third block including said control information;

recording said video format signal on a recording medium;

reading said video format signal from said recording medium; and

discriminating said video information and digital data in accordance with said control information.

11. A method of recording and reproducing a video format signal of the type having successive frames each made up of plural fields and each field having a plurality of successive lines, with each line including a horizontal synchronizing signal portion followed by an information signal portion, said video format signal containing video information corresponding to the image to be displayed, a plurality of items of digital data, and control information, said method comprising the steps of:

generating said video format signal with said digital data, said video information and said control information included in information signal portions of said signal;

recording said video format signal on a recording medium;

reading said video format signal from said recording medium;

writing each of said plurality of items of digital data into a specific location of memory means;

providing an external control signal from an external source; and

selecting one or more of said items of digital data, reading said one or more of said items out of said memory means and reproducing the selected items together with said video information in accordance with said control information and said external control signal.

12. The method according to claim 11, wherein said control information comprises a signal indicative of the content of said digital data, a signal indicative of the amount of said digital data, and a signal indicative of a process of combining and selecting digital data items.

13. A method of recording and reproducing a video format signal of the type having successive frames each made up of plural fields and each field having a plurality of successive lines, with each line including a horizontal synchronizing signal portion followed by an information signal portion, said video format signal containing video information corresponding to the image to be displayed, a plurality of items of digital data, and control information, said method comprising the steps of:

generating said video format signal with said digital data, said video information and said control information included in information signal portions of said signal;

recording said video format signal on a recording medium;

providing an external control signal from an external source;

selecting one or more of said items of digital data, reading said one or more of said items out of said memory means, reproducing the selected items together with said video information in accordance with said control information and said external control signal;

reading said video format signal from said recording medium;

writing said video format signal from said recording medium;

reading said video format signal from said memory means.

14. A method of recording and reproducing a video format signal of the type having successive frames each made up of plural fields and each field having a plurality of successive lines, with each line including a horizontal synchronizing signal portion followed by an information signal portion, said video format signal corresponding to a two-dimensional image and containing video information corresponding to the image to be displayed, control information and time compressed digital data, said method comprising the steps of:

dividing said two-dimensional image into a plurality of blocks each having at least one subblock and each subblock having at least one line, with at least a first of said blocks having a plurality of subblocks;

generating said video format signal with the information signal portions of each subblock in said first block including one of video information and digital data, and with video information and control information included in the remaining blocks;

recording said video format signal on a recording medium;

reading said video format signal from said recording medium; and

writing said digital data from at a first subblock group of said first block into memory means;

reading the digital data out of said memory means while expanding said digital data on a time basis, and writing digital data from a second subblock group subsequent to said first subblock group into said memory means during reading of said data, whereby said digital data in said first subblock group and said second subblock group are successively reproduced.

15. The method according to claim 14, wherein said first subblock group and said second subblock group are in respective first and second frames, video information present in said second frame being reproduced while said digital data from said second subblock group is being written into said memory means and the digital data in said first subblock group is being read out of said memory means.

17. The method according to claim 16 or 14, wherein said digital data comprises a time compressed digital data which is compressed on a time basis.

16. A method for recording and reproducing a video format signal on and from a recording medium, comprising the steps of:

dividing a two-dimensional screen based on the video format signal into a plurality of blocks with one of said blocks divided into a plurality of subblocks;

inserting at least one of video information and digital data into each of said subblocks, inserting video information and control information into the remaining blocks, and recording the resulting information on a recording medium; and

writing said information in at least one of said subblocks into memory means in a reproduction mode, thereafter reading said information in said at least one subblock out of said memory means while expanding said information on a time basis, and writing said information next to the information in said at least one subblock into said memory means during reading said information, whereby said information in at least said one subblock and said next information are successively reproduced,

wherein said control information includes successive reproduction information indicative of whether said digital data in at least said one subblock and said next digital data are to be successively reproduced or not so that said digital data in at least said one subblock and next digital data are successively reproduced according to said successive reproduction information.