Method and apparatus for recording plurality of non-synchronous image data

• US 5,243,416 A
• Filed: 04/09/1991
• Issued: 09/07/1993
• Est. Priority Date: 04/13/1990
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Nakazawa, Naoyuki
• Primary Examiner(s): Britton, Howard W.
• Application Number:
  US07/682,213
• Time in Patent Office: 882 Days
• Field of Search: 358/98, 358/149, 358/181, 358/337
• US Class Current: 348/74
• CPC Class Codes: A61B 1/042 characterised by a proximal camera, e.g. a CCD camera
• CPC Class Codes: H04N 5/9205 the additional signal being at least another television signal
• CPC Class Codes: H04N 5/95 Time-base error compensation H04N5/932 takes precedence

Abstract

Image recording method and apparatus for recording a plurality of non-synchronous image data from a plurality of imaging devices, capable of achieving a reliable image recording operation without using a plurality of time base correctors. In the apparatus, one of the non-synchronous image data from one imaging device is selectively transmitted, and a synchronous signal is extracted from that non-synchronous image data. Then, a synchronized operation command signal is obtained from an externally given operation command signal and the extracted synchronous signal, and a single time base corrector is provided for transmitting image data to be recorded in that non-synchronous image data at a predetermined recording timing, by using the synchronized operation command signal, such that the image data to be recorded transmitted by the time base corrector can be recorded.

Claims

1. An image recording apparatus for recording a plurality of non-synchronous image data from a plurality of imaging devices, comprising:

means for selectively transmitting one of the non-synchronous image data from one imaging device;

means for extracting synchronous signal from said one of the non-synchronous image data;

means for obtaining a synchronized operation command signal from an externally given operation command signal and the extracted synchronous signal;

a single time base corrector means for transmitting image data to be recorded in said one of the non-synchronous image data at a predetermined recording timing, by using the synchronized operation command signal; and

a recording device for recording the image data to be recorded transmitted by the time base corrector means.

2. The image recording apparatus of claim 1, wherein the imaging devices are endoscope devices.

3. The image recording apparatus of claim 1, wherein the time base corrector means has a synchronization clock to provide the predetermined recording timing.

4. The image recording apparatus of claim 1, wherein the operation command signal is a freeze signal and a synchronized operation command signal is a synchronized freeze signal.

5. The image recording apparatus of claim 4, wherein the synchronized freeze signal indicates the image data to be recorded in said one of the non-synchronous image data.

6. An image recording method for recording a plurality of non-synchronous image data from a plurality of imaging devices, comprising the steps of:

selectively transmitting one of the non-synchronous image data from one imaging device;

extracting a synchronous signal from said one of the non-synchronous image data;

obtaining a synchronized operation command signal from an externally given operation command signal and the extracted synchronous signal;

providing a single time base corrector means for transmitting image data to be recorded in said one of the non-synchronous image data at a predetermined recording timing, by using the synchronized operation command signal; and

recording the image data to be recorded transmitted by the time base corrector means.

7. The image recording method of claim 6, wherein the imaging devices are endoscope devices.

8. The image recording method of claim 6, wherein the time base corrector means has a synchronization clock to provide the predetermined recording timing.

9. The image recording method of claim 6, wherein the operation command signal is a freeze signal and a synchronized operation command signal is a synchronized freeze signal.

10. The image recording method of claim 9, wherein the synchronized freeze signal indicates the image data to be recorded in said one of the non-synchronous image data.