Electronic apparatus having image-shake correcting device

• US 5,727,115 A
• Filed: 07/23/1996
• Issued: 03/10/1998
• Est. Priority Date: 06/22/1992
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Wada, Hidetoshi
• Primary Examiner(s): TRAN, THAI Q
• Application Number:
  US08/685,213
• Time in Patent Office: 595 Days
• Field of Search: 386/14, 386/38, 386/86, 386/87, 386/118, 386/121, 386/113, 386/21, 360/70, 360/73.01, 360/73.04, 360/73.09, 360/73.11, 360/73.12, 360/73.13, 360/73.14, 348/208, 358/906, 358/909.1
• US Class Current: 386/264
• CPC Class Codes: G11B 31/006 with video camera or receiver
• CPC Class Codes: H04N 23/68 for stable pick-up of the scene, e.g. compensating for camera body vibrations
• CPC Class Codes: H04N 23/6811 based on the image signal
• CPC Class Codes: H04N 23/683 performed by a processor, e.g. controlling the readout of an image memory
• CPC Class Codes: H04N 5/772 the recording apparatus and the television camera being placed in the same enclosure
• CPC Class Codes: Y10S 358/906 Hand-held camera with recorder in a single unit

Abstract

A camera-integrated VTR is arranged to detect an image shake according to a control error signal of a driving control system provided for recording or reproduction by moving a tape and a head relative to each other and to correct the image shake by supplying the result of detection to an image-shake correction circuit.

Claims

1. A camera-integrated type video recorder apparatus comprising:

a) driving control means for moving a recording medium and a head relative to each other;

b) detecting means for detecting a shake on the basis of a change of a driving condition of said driving control means; and

c) correcting means for correcting a movement of an image due to the shake on the basis of an output of said detecting means.

2. An apparatus according to claim 1, wherein said recording medium is a magnetic tape, and wherein said head is disposed on a rotary head cylinder.

3. An apparatus according to claim 2, wherein said driving control means includes a rotary head cylinder servo circuit which controls and causes the rotation of said rotary head cylinder to be constantly at a predetermined speed.

4. An apparatus according to claim 3, wherein said detecting means is arranged to detect fluctuations of a control error voltage used for correcting fluctuations of the rotation of said rotary head cylinder servo circuit and to detect an image shake from the fluctuations of the rotation of said rotary head cylinder.

5. An apparatus according to claim 1 or 4, further comprising image shake correction means for correcting the image shake according to an output of said detecting means.

6. An apparatus according to claim 5, wherein said image-shake correction means includes memory means capable of storing a video signal for one picture, memory control means arranged to vary a reading-out position of the video signal from said memory means according to an output of said detecting means, and interpolation means for performing an interpolating process on the video signal read out from said memory means.

7. An apparatus according to claim 1, further comprising motion vector detecting means for detecting a motion vector from the video signal.

8. A video camera apparatus comprising:

a) recording means for recording an image signal on a recording medium by a recording head;

b) driving control means for moving said recording medium and said head relative to each other;

c) detecting means for detecting a shake on the basis of a change of a driving condition of said driving control means; and

d) compensating means for compensating a movement of an image caused by the shake on the basis of an output of said detecting means.

9. An apparatus according to claim 8, wherein said recording medium is a magnetic tape, and wherein said head is disposed on a rotary head cylinder.

10. An apparatus according to claim 9, wherein said driving control means includes a rotary head cylinder servo circuit which controls and causes the rotation of said rotary head cylinder to be constantly at a predetermined speed.

11. An apparatus according to claim 10, wherein said detecting means is arranged to detect fluctuations of a control error voltage used for correcting fluctuations of the rotation of said rotary head cylinder servo circuit and to detect an image shake from the fluctuations of the rotation of said rotary head cylinder.

12. An apparatus according to claim 8, wherein said compensating means includes memory means capable of storing a video signal for one picture, memory control means arranged to vary a reading-out position of the video signal from said memory means according to an output of said detecting means, and interpolation means for performing an interpolating process on the video signal read out from said memory means.

13. An apparatus according to claim 8, further comprising motion vector detecting means for detecting a motion vector from the video signal.

14. An apparatus according to claim 13, wherein said compensating means compensates the image shake according to the output of said detecting means and an output of said motion vector detecting means.

15. A recording apparatus comprising:

a) recording means for recording an input image signal on a recording medium;

b) driving means for driving said recording means and said recording medium relative to each other;

c) movement vector detecting means for detecting a movement vector corresponding to a shake;

d) detecting means for detecting a change of driving condition of said driving means caused by the shake; and

e) correcting means for correcting a movement of image caused by the shake on the basis of an output of said movement vector detecting means and an output of said detecting means.

16. An apparatus according to claim 15, wherein said recording means having a rotary head drum mounted on said recording means and rotating servo means for rotating said rotary head relative to said recording medium at a constant speed.

17. An apparatus according to claim 16, wherein said movement vector detecting means electronically detects the movement vector from the output image signal.

18. An apparatus according to claim 17, wherein said correcting means corrects the image shake on the basis of the output of said movement vector detecting means and error information of said servo means detected by said detecting means.

19. An apparatus according to claim 18, wherein said correcting means includes memory means capable of storing a video signal for one picture, memory control means arranged to vary a reading-out position of the video signal from said memory means according to the output of said movement vector detecting means and the error information.