Apparatus for recording/reproducing video data to/from a solid-state

• US 5,774,192 A
• Filed: 10/02/1995
• Issued: 06/30/1998
• Est. Priority Date: 10/04/1994
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Koyama, Shinichi
• Primary Examiner(s): BURGESS, GLENTON B
• Application Number:
  US08/538,133
• Time in Patent Office: 1,002 Days
• Field of Search: 348/715-720, 348/738, 348/513, 348/526, 348/231, 348/232, 358/341, 358/343, 358/339, 358/320, 360/19.1, 360/36.2, 360/32, 360/33.1, 386/39, 386/96, 386/104, 386/105, 386/100, 386/106
• US Class Current: 348/715
• CPC Class Codes: H04N 5/783 Adaptations for reproducing at a rate different from the recording rate
• CPC Class Codes: H04N 5/907 using static stores, e.g. storage tubes or semiconductor memories H04N5/91 takes precedence
• CPC Class Codes: H04N 5/9261 involving data reduction
• CPC Class Codes: H04N 5/9267 using time division multiplex of the PCM audio and PCM video signals

Abstract

Input image data and audio data divided into a plurality of portions are continuously recorded in a solid-state memory. When the audio data is to be reproduced in units of the portions, a reproducing start address of each portion of the audio data is changed in an order different from that in recording, thereby reproducing the audio data. The image data is divided into a plurality of portions corresponding to the plurality of portions of the audio data. The image data is reproduced in units of the portions. At this time, the reproducing start address of each portion of the image data is changed in an order different from that in recording, thereby reproducing the image data. With this arrangement, even when the image and audio data are reproduced in an order different from that in recording, the reproduced audio data can be confirmed.

Claims

1. A data recording and reproducing apparatus comprising:

(a) audio dividing means for dividing input audio data into a plurality of portions;

(b) recording means for continuously recording input image data and the audio data divided by said audio dividing means in a solid-state memory;

(c) audio reproducing means for reproducing the audio data from said solid-state memory in units of said portions, said audio reproducing means reproducing the audio data while changing a reproducing start address of each portion of the audio data in an order different from that in recording; and

(d) image reproducing means for reproducing the image data from said solid-state memory, said image reproducing means dividing the image data recorded in said solid-state memory into a plurality of portions according to said plurality of portions of the audio data to reproduce the image data in units of said portions, and reproducing the image data while changing the reproducing start address of each portion of the image data in an order different from that in recording.

2. An apparatus according to claim 1, wherein said audio reproducing means reproduces the audio data while changing the reproducing start address of each portion of the audio data in a direction opposite to that in recording, and said image reproducing means reproduces the image data while changing the reproducing start address of each portion of the image data in a direction opposite to that in recording.

3. An apparatus according to claim 1, wherein said audio dividing means divides the audio data into said plurality of portions in accordance with a level of the input audio data.

4. An apparatus according to claim 1, further comprising audio ID generating means for generating audio ID data representing each portion of the audio data divided into said plurality of portions, and wherein said recording means records the audio ID data in said solid-state memory in units of said plurality of portions of the audio data.

5. An apparatus according to claim 4, wherein said reproducing means changes the reproducing start address of each portion of the audio data on the basis of the audio ID data reproduced from said solid-state memory device.

6. An apparatus according to claim 1, wherein said audio reproducing means reproduces a predetermined number of portions of the audio data one by one, and said image reproducing means reproduces the predetermined number of portions of the image data one by one.

7. An apparatus for reproducing audio data and image data from a solid-state memory in which the audio data and the image data, each of which is divided into a plurality of portions, are recorded, comprising:

(a) reproducing means for reproducing the audio data and the image data from said solid-state memory in units of said portions; and

(b) control means for controlling said reproducing means to reproduce the image data and the audio data while changing a reproducing start address of each portion of the image data and the audio data in an order different from that in recording.

8. An apparatus according to claim 7, wherein said control means changes the reproducing start address of each portion of the image data and the audio data in a direction opposite to that in recording.

9. An apparatus according to claim 8, wherein said reproducing means reproduces a predetermined number of portions of the audio data one by one and reproduces the predetermined number of the image data one by one.

10. An apparatus according to claim 7, wherein said control means changes the reproducing start address of each portion of the image data and the audio data in the same direction as in recording, and

said reproducing means reproduces a predetermined number of portions of the audio data one by one and reproduces a predetermined number of portions of the image data one by one.

11. An apparatus according to claim 7, wherein the image data is divided into a plurality of portions in units of frames and recorded, and said reproducing means changes the reproducing start address of the image data in units of frames.

12. Apparatus according to claim 7, further comprising reproducing means for reading out the image data and the audio data from the solid-state memory device.

13. Apparatus according to claim 12, further comprising image monitoring means for monitoring the reproduced image signal.

14. Apparatus according to claim 12, further comprising audio monitoring means for monitoring the reproduce audio signal.

15. Apparatus according to claim 12, further comprising image output means for outputting the reproduced image signal to an image monitoring device.

17. Apparatus according to claim 7, wherein the solid-state memory device comprises a memory having an exchangeable form.

18. Apparatus according to claim 7, wherein the solid-state memory device comprises an IC card.

19. Apparatus according to claim 7, wherein the image data comprises data whose data amount is compressed and which is encoded.

20. Apparatus according to claim 19, further comprising expansion means for decoding the image data reproduced by said reproducing means and expanding the code amount of the reproduced image data.

21. Apparatus according to claim 7, wherein said reproducing means reproduces the audio data and the image data corresponding to said audio data.

22. Apparatus according to claim 7, wherein said reproducing means reproduces additional data representing each portion of the audio data, from said solid-state memory, and wherein said control means controls said reproducing means by using said addition data.

16. Apparatus according to claim 23, further comprising audio output means for outputting the reproduced audio signal to an audio monitoring device.