Imaging apparatus

• US 20050280702A1
• Filed: 04/25/2005
• Published: 12/22/2005
• Est. Priority Date: 06/17/2004
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Nakano, Norihiko, Usui, Tsutomu, Sai, Hirotomo
• Application Number:
  US11/114,456
• Publication Number:
  US 20050280702A1
• Time in Patent Office: Days
• US Class Current: 348/42
• CPC Class Codes: H04N 13/239 using two 2D image sensors having a relative position equal to or related to the interocular distance H04N13/243 takes precedence
• CPC Class Codes: H04N 13/296 Synchronisation thereof; Control thereof

Abstract

A stereoscopic imaging system includes a stereoscopic imaging apparatus having a plurality of imaging modules to pick up an image and an imaging sync control module to arithmetically process the video signals output from the plurality of the imaging modules for the stereoscopic imaging operation. In the case where the imaging modules control the exposure using an electronic shutter function and come to have different timing of the center of gravity of the exposure period, an imaging sync control module sets the plurality of the imaging modules at the same timing of the center of gravity of the exposure period by displacing the phase of the timing of the center of gravity of the exposure period of the imaging modules thereby to prevent the image processing capability of the stereoscopic imaging operation from being reduced.

Claims

1. An imaging apparatus comprising:

a first imaging module;

a second imaging module; and

a control module to control at least selected one of the first imaging module and the second imaging module and set the first imaging module and the second imaging module at a same timing of selected one of a center of gravity and a center of an exposure period.

4. An imaging apparatus according to claim 1,

wherein the imaging module has the electronic shutter function;

and

wherein in the case where the timing of the center of gravity of the exposure periods of the plurality of the imaging modules are differentiated by the exposure control operation using the electronic shutter function, the imaging sync control module displaces the phase of the output signals of the plurality of the imaging modules from each other thereby to set the plurality of the imaging modules to the same timing of the center of gravity of the exposure period.

7. An imaging apparatus according to claim 1,

wherein each imaging module includes a mechanical shutter;

and

wherein in the case where the exposure control operation using the mechanical shutter differentiates the timing of the center of gravity of the exposure period among the plurality of the imaging modules, the imaging sync control module displaces the phase of the output signals of the plurality of the imaging modules from each other thereby to set the plurality of the imaging modules at the same timing of the center of gravity of the exposure period.

12. An imaging apparatus according to claim 1,

wherein the imaging sync control module is supplied with the information on the imaging period from the plurality of the imaging modules, and generates and outputs to each imaging module a sync signal of each imaging module in such a manner that the plurality of the imaging modules are set at the same timing of the center of gravity of the exposure period;

and

wherein each of the imaging modules picks up an image in synchronism with the sync signal.

15. An imaging apparatus according to claim 1,

wherein the imaging sync control module is supplied with the information on the imaging period from the plurality of the imaging modules, and generates and outputs to the plurality of the imaging modules a reference signal used by each of the imaging modules as a reference to determine the timing of the center of gravity of the exposure period;

and

wherein the plurality of the imaging modules are controlled in such a manner as to set the timing of the center of gravity of the exposure period to the reference signal.

2. An imaging apparatus comprising:

a plurality of different imaging modules; and

a control module to control the plurality of the imaging modules and to set the plurality of the imaging modules at a same timing of selected one of a center of gravity and a center of an exposure period.

5. An imaging apparatus according to claim 2,

wherein each imaging module has the electronic shutter function;

and

wherein in the case where the exposure control operation using the electronic shutter function differentiates the timing of the center of gravity of the exposure periods among the plurality of the imaging modules, the imaging sync control module displaces the phase of the output signals of the plurality of the imaging module from each other thereby to set the plurality of the imaging modules to the same timing of the center of gravity of the exposure period.

8. An imaging apparatus according to claim 2,

wherein each imaging module includes a mechanical shutter;

and

wherein in the case where the exposure control operation using the mechanical shutter differentiates the timing of the center of gravity of the exposure periods among the plurality of the imaging modules, the imaging sync control module displaces the phase of the output signals of the plurality of the imaging modules from each other thereby to set the plurality of the imaging modules at the same timing of the center of gravity of the exposure period.

13. An imaging apparatus according to claim 2,

wherein the imaging sync control module is supplied with the information on the imaging period from the plurality of the imaging modules, and generates and outputs to each imaging module a sync signal of each imaging module in such a manner that the plurality of the imaging modules are set at the same timing of the center of gravity of the exposure period;

and

wherein each of the imaging modules picks up an image in synchronism with the sync signal.

16. An imaging apparatus according to claim 2,

wherein the imaging sync control module is supplied with the information on the imaging period from the plurality of the imaging modules, and generates and outputs to the plurality of the imaging modules a reference signal used as a reference to determine the timing of the center of gravity of the exposure period;

and

wherein the plurality of the imaging modules are controlled in such a manner as to set the timing of the center of gravity of the exposure period to the reference signal.

3. An imaging apparatus comprising:

a plurality of imaging modules;

an imaging sync control module to control the timing of the output signals of the plurality of the imaging modules; and

a stereoscopic image processing module to perform a stereoscopic imaging arithmetic operation against video signals output from the plurality of the imaging modules;

wherein the imaging sync control module displaces a phase of the signal output timing of the plurality of the imaging modules and sets the plurality of the imaging modules to a same timing of a center of gravity of an exposure period.

6. An imaging apparatus according to claim 3,

wherein each imaging module has the electronic shutter function;

and

wherein in the case where the exposure control operation using the electronic shutter function differentiates the timing of the center of gravity of the exposure periods among the plurality of the imaging modules, the imaging sync control module displaces the phase of the output signals of the plurality of the imaging modules from each other thereby to set the plurality of the imaging modules at the same timing of the center of gravity of the exposure period.

9. An imaging apparatus according to claim 3,

wherein each imaging module includes a mechanical shutter;

and

wherein in the case where the exposure control operation using the mechanical shutter differentiates the timing of the center of gravity of the exposure periods among the plurality of the imaging modules, the imaging sync control module displaces the phase of the output signals of the plurality of the imaging modules from each other thereby to set the plurality of the imaging modules at the same timing of the center of gravity of the exposure period.

14. An imaging apparatus according to claim 3,

wherein the imaging sync control module is supplied with the information on the imaging period from the plurality of the imaging modules, and generates and outputs to each imaging module a sync signal of each imaging module in such a manner that the plurality of the imaging modules are set at the same timing of the center of gravity of the exposure period;

and

wherein each of the imaging modules picks up an image in synchronism with the sync signal.

17. An imaging apparatus according to claim 3,

wherein the imaging sync control module is supplied with the information on the imaging period from the plurality of the imaging modules, and generates and outputs to the plurality of the imaging modules a reference signal used as a reference to determine the timing of the center of gravity of the exposure period;

and

wherein the plurality of the imaging modules are controlled in such a manner as to set the timing of the center of gravity of the exposure period to the reference signal.

10. An imaging apparatus comprising:

a plurality of imaging modules having different imaging periods;

an imaging sync control module to control output signals of the plurality of the imaging modules; and

a stereoscopic image processing module to arithmetically process video signals output from the plurality of the imaging modules for a stereoscopic imaging operation;

wherein the imaging sync control module displaces a phase of the output signals of the plurality of the imaging modules thereby to set the plurality of the imaging modules at a timing of a center of gravity of an exposure period.

11. An imaging apparatus according to claim 10,

wherein the imaging sync control module controls the plurality of the imaging modules in such a manner that the timing of the center of gravity of the short imaging period of the imaging modules to the timing of the center of gravity of the long imaging period of the imaging modules having a long imaging period.