Recording apparatus having a pause mode in which video signals are written to memory by cyclically designating write addresses

• US 20040156618A1
• Filed: 02/03/2004
• Published: 08/12/2004
• Est. Priority Date: 06/22/1998
• Status: Active Grant

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Hoshi, Hidenori
• Granted Patent: US 7,400,818 B2
• Time in Patent Office: Days
• US Class Current: 386/68
• CPC Class Codes: H04N 2009/8084 using transform coding
• CPC Class Codes: H04N 5/772 the recording apparatus and the television camera being placed in the same enclosure
• CPC Class Codes: H04N 5/85 on discs or drums

Abstract

A recording apparatus reads and stores video signals on a recording medium. The recording apparatus has a recording mode and a recording pause mode. In the recording mode, the video signals are stored in a memory, and the video signals read from the memory are recorded. In the recording pause mode, the video signals are stored in the memory by cycling through selecting storage addresses, and the recording of the video signals is terminated.

Claims

1. A recording apparatus comprising:

storage means for storing video signals;

control means for controlling the operation of said storage means;

recording means for recording on a recording medium the video signals read from said storage means; and

mode-setting means for setting a mode of said apparatus between a plurality of modes including (i) a recording mode in which said control means writes said video signals into said storage means, and said recording means records said video signals read from said storage means, and (ii) a recording pause mode in which said control means writes said video signals in said storage means by cyclically designating write addresses of said storage means at which said video signals are to be written, and the recording of said video signals is stopped.

2. A recording apparatus according to claim 1, wherein in said recording pause mode, said control means repeatedly writes said video signals into said storage means, and inhibits the reading of said video signals from said storage means to said recording means.

3. A recording apparatus according to claim 1, further comprising a compression means for compressing an information amount of input video signals, wherein said control means writes the video signals compressed by said compression means into said storage means.

4. A recording apparatus according to claim 3, wherein said recording means records, on said recording medium, the compressed video signals stored in said storage means.

5. A recording apparatus according to claim 3, wherein said compression means includes an error-correction encoding means for subjecting the compressed video signals to an error-correction encoding process.

6. A recording apparatus according to claim 3, wherein said storage means has a first area in which said video signals to be compressed by said compression means are stored, and a second area in which the compressed video signals are stored.

7. A recording apparatus according to claim 6, wherein in said recording mode, said control means writes the compressed video signals into said second area by cyclically designating the write addresses of said storage means, and reads and outputs the stored video signals from said second area to said recording means, and wherein in said recording pause mode, said control means stores the compressed video signals in said second area by cyclically designating the write addresses of said storage means, and stops the reading of said video signals from said second area.

8. A recording apparatus according to claim 3, wherein said recording apparatus further comprises an output means for outputting the compressed video signals from said apparatus.

9. A recording apparatus according to claim 1, wherein said recording medium comprises a disk recording medium.

10. A recording apparatus according to claim 1, wherein said storage means stores said video signals of n frames where n represents an integer not less than 2.

11. A recording apparatus according to claim 1, wherein said control means writes said video signals into said storage means by cyclically designating the write addresses of said storage means.

12. A recording apparatus comprising:

a memory storing video signals of n frames where n represents an integer not less than 2;

recording means for recording on a recording medium the video signals read from said memory;

instruction means for manually instructing a start of the recording of said video signals by said recording means; and

control means for controlling the storing operation of said memory and the recording operation of said recording means;

wherein said control means writes said video signals into said memory by cyclically designating write addresses of said memory, and wherein

said control means controls said memory and said recording means so that in accordance with an instruction by said instruction means, video signals corresponding to the (n−

1)th frame at the time of the instruction are read from said memory and recorded by said recording means.

13. A recording apparatus according to claim 12, wherein said control means sequentially reads the video signals corresponding to the (n−

1)th frame by cyclically designating read addresses of said memory.

14. A recording apparatus according to claim 12, wherein said control means includes an address generating means for determining a reading-start address in accordance with a write address generated at the time of said instruction.

15. A recording apparatus comprising:

a memory for storing video signals of n frames where n represents an integer not less than 2;

recording means for recording on a recording medium the video signals read from said memory;

instruction means for manually instructing a stop of the recording of said video signals by said recording means; and

control means for controlling the storing operation of said memory and the recording operation of said recording means;

wherein said control means writes said video signals into said memory by cyclically designating write addresses of said memory, and wherein

said control means controls said memory and said recording means so that in accordance with an instruction by said instruction means, said video signals of n frames from the time of the termination instruction are read, and after that, the recording of said video signals by said recording means is stopped.

16. A recording apparatus according to claim 15, wherein said control means controls the recording operation of said recording means so that said video signals are recorded at a speed higher than the normal speed.

17. A recording apparatus according to claim 16, wherein said recording medium comprises a disk recording medium, and wherein said control means controls said recording means so that in accordance with the instruction, said disk recording medium is driven at a speed greater than the normal driving speed.

18. A recording apparatus comprising:

a memory storing video signals of n frames where n represents an integer not less than 2;

recording means for recording on a recording medium the video signals read from said memory;

first instruction means for manually instructing a start of the recording of said video signals by said recording means;

second instruction means for manually instructing a stop of the recording of said video signals by said recording means; and

control means for controlling the storing operation of said memory and the recording operation of said recording means;

wherein said control means writes said video signals into said memory by cyclically designating write addresses of said memory,

wherein said control means controls said memory and said recording means so that in accordance with an instruction by said first instruction means, video signals corresponding to the (n−

1)th frame at the time of said instruction of said first instruction means are read from said memory and recorded by said recording means, and

wherein said control means controls said memory and said recording means so that in accordance with an instruction by said second instruction means, the video signals for n frames from the time of the instruction of said second instruction means are read before the recording of said video signals by said recording means is terminated.