Solid-state image sensor device

• US 4,989,075 A
• Filed: 04/30/1990
• Issued: 01/29/1991
• Est. Priority Date: 08/26/1987
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Ito, Yukinobu
• Primary Examiner(s): Coles, Sr., Edward L.
• Assistant Examiner(s): Grant, II, Jerome
• Application Number:
  US07/517,385
• Time in Patent Office: 274 Days
• Field of Search: 358/44, 358/41, 358/48, 358/43, 358/42, 358/213.11, 358/75, 358/80
• US Class Current: 348/280
• CPC Class Codes: H04N 25/11 Arrangement of colour filter arrays [CFA]; Filter mosaics
• CPC Class Codes: H04N 25/136 using complementary colours
• CPC Class Codes: H04N 25/447 by preserving the colour pattern with or without loss of information

Abstract

A solid-state image sensing device comprises photoelectric image sensors disposed in parallel with each other for receiving an optical image, vertical transfer members coupled to the image sensors, and horizontal transfer members coupled to output of the vertical transfer members. The vertical transfer members are each formed of R, G and B vertical transfer arrays provided for R, G and B color image signals output from a photoelectric image sensor. Outputs of the R, G and B vertical transfer arrays are coupled to R, G and B horizontal transfer arrays. The R, G and B vertical transfer arrays store the R, G and B image signals, and transfer the stored R, G and B image signals to the R, G and B horizontal transfer arrays.

Claims

1. A solid-state image sensing device comprising:

a plurality of photoelectric conversion members disposed in parallel with each other for converting incident optical images to image signals;

a plurality of vertical transfer members for storing image signals which are output from corresponding photoelectric conversion members and transferring the stored image signals in the vertical direction; and

a plurality of horizontal transfer members coupled to said vertical transfer members for storing image signals transferred from vertical transfer members and transferring the stored image signals in the horizontal direction for each of scanning lines;

wherein each of said photoelectric conversion members comprises a photoelectric image sensor for periodically and sequentially providing R, G and B image signals;

each of said vertical transfer members comprises three vertical transfer arrays for storing R, G and B image signals, respectively, which are sequentially output from a corresponding photoelectric image sensor and transferring the stored image signals in the vertical direction; and

said horizontal transfer members comprise three vertical transfer arrays for storing the R, G and B image signals, respectively, transferred from corresponding vertical transfer arrays and transferring the stored image signals in the horizontal direction.

2. A solid-state image sensing device for converting color optical images of a subject to color image signals, wherein each color optical image corresponds to one of a plurality of fundamental colors, and wherein each color image signal corresponds to one fundamental color, the sensing device comprising:

a plurality of photoelectric conversion members disposed in parallel with each other, each photoelectric conversion member including;

a plurality of photoelectric conversion elements, each photoelectric conversion element converting incident color optical images corresponding to the plurality of fundamental colors to color image signals corresponding to the plurality of fundamental colors, and outputting the color image signals;

a plurality of vertical transfer members disposed in parallel with each other, each vertical transfer member connected to a corresponding photoelectric conversion member, and each vertical transfer member including;

a plurality of vertical transfer arrays connected to the corresponding photoelectric conversion member, each vertical transfer array in the vertical transfer member corresponding to one fundamental color, and each vertical transfer array including;

a plurality of vertical transfer elements, each vertical transfer element in the vertical transfer array connected to a corresponding photoelectric conversion element in the corresponding photoelectric conversion member, and each vertical transfer element in the vertical transfer array storing and transferring color image signals that are output by the corresponding photoelectric conversion element and that correspond to one fundamental color; and

a horizontal transfer member not disposed in parallel with the vertical transfer members, the horizontal transfer member connected to each vertical transfer member, and the horizontal transfer member including;

a plurality of horizontal transfer arrays, each horizontal transfer array corresponding to one fundamental color, each horizontal transfer array connected to a corresponding vertical transfer array in each vertical transfer member, and each horizontal transfer array including;

a plurality of horizontal transfer elements, each horizontal transfer element in the horizontal transfer array connected to a corresponding vertical transfer element in one of the corresponding vertical transfer arrays, and each horizontal transfer element in the horizontal transfer array storing and transferring color image signals that correspond to one fundamental color.

3. A solid-state image sensing device in accordance with claim 2, in which each vertical transfer array and each horizontal transfer array is a charge-coupled device.

4. A solid-state image sensing device in accordance with claim 2, in which the plurality of fundamental colors are red, green, and blue, in which each vertical transfer member includes three vertical transfer arrays, and in which the horizontal transfer member includes three horizontal transfer arrays.

5. A solid-state image sensing device in accordance with claim 2, in which the plurality of fundamental colors are cyan, yellow, and green, in which each vertical transfer member includes three vertical transfer arrays, and in which the horizontal transfer member includes three horizontal transfer arrays.

6. A solid-state image sensing device in accordance with claim 2, and further comprising:

light source means for sequentially and cyclically emitting light corresponding to each of the plurality of fundamental colors to illuminate the subject; and

wherein each photoelectric conversion element sequentially and cyclically converts incident color optical images corresponding to each of the plurality of fundamental colors to color image signals corresponding to each of the plurality of fundamental colors, and sequentially and cyclically outputs the color image signals corresponding to each of the plurality of fundamental colors.

7. A solid-state image sensing device in accordance with claim 6, and further comprising:

control means connected to each vertical transfer array for sequentially and cyclically providing a plurality of driving signals, each driving signal corresponding to one fundamental color; and

wherein the vertical transfer arrays corresponding to one fundamental color are selected in response to providing by the control means of the corresponding driving signal; and

wherein the vertical transfer elements in the selected vertical transfer arrays store color image signals corresponding to the one fundamental color in response to providing by the control means of the corresponding driving signal.

8. A solid-state image sensing device in accordance with claim 7, in which:

the control means provides a plurality of transfer signals, each transfer signal corresponding to one fundamental color;

the vertical transfer arrays corresponding to one fundamental color are selected in response to providing by the control means of the corresponding transfer signal; and

the vertical transfer elements in the selected vertical transfer arrays transfer color image signals corresponding to the one fundamental color in response to providing by the control means of the corresponding transfer signal.

9. A solid-state image sensing device in accordance with claim 8, in which the control means sequentially and cyclically provides the transfer signals corresponding to the fundamental colors.

10. A solid-state image sensing device in accordance with claim 8, in which the control means simultaneously provides the transfer signals corresponding to the fundamental colors.

11. A solid-state image sensing device in accordance with claim 2, wherein the image sensing device is used in an endoscope and the subject is a body cavity, and further comprising:

light source means for sequentially and cyclically emitting light corresponding to each of the plurality of fundamental colors to illuminate the interior of the body cavity; and

wherein each photoelectric conversion element sequentially and cyclically converts incident color optical images corresponding to each of the plurality of fundamental colors to color image signals corresponding to each of the plurality of fundamental colors, and sequentially and cyclically outputs the color image signals corresponding to each of the plurality of fundamental colors.

12. A solid-state image sensing device in accordance with claim 11, in which each vertical transfer array and each horizontal transfer array is a charge-coupled device.

13. A solid-state image sensing device in accordance with claim 11, in which the plurality of fundamental colors are red, green, and blue, in which each vertical transfer member includes three vertical transfer arrays, and in which the horizontal transfer member includes three horizontal transfer arrays.

14. A solid-state image sensing device in accordance with claim 11, in which the plurality of fundamental colors are cyan, yellow, and green, in which each vertical transfer member includes three vertical transfer arrays, and in which the horizontal transfer member includes three horizontal transfer arrays.

15. A solid-state image sensing device in accordance with claim 11, and further comprising:

control means connected to each vertical transfer array for sequentially and cyclically providing a plurality of driving signals, each driving signal corresponding to one fundamental color; and

wherein the vertical transfer arrays corresponding to one fundamental color are selected in response to providing by the control means of the corresponding driving signal; and

wherein the vertical transfer elements in the selected vertical transfer arrays store color image signals corresponding to the one fundamental color in response to providing by the control means of the corresponding driving signal.

16. A solid-state image sensing device in accordance with claim 15, in which:

the control means provides a plurality of transfer signals, each transfer signal corresponding to one fundamental color;

the vertical transfer arrays corresponding to one fundamental color are selected in response to providing by the control means of the corresponding transfer signal; and

the vertical transfer elements in the selected vertical transfer arrays transfer color image signals corresponding to the one fundamental color in response to providing by the control means of the corresponding transfer signal.

17. A solid-state image sensing device in accordance with claim 16, in which the control means sequentially and cyclically provides the transfer signals corresponding to the fundamental colors.

18. A solid-state image sensing device in accordance with claim 16, in which the control means simultaneously provides the transfer signals corresponding to the fundamental colors.

19. A solid-state image sensing device comprising:

a plurality of photoelectric conversion members disposed in parallel with each other for converting incident optical images to image signals; and

a plurality of transfer members provided for each of said photoelectric conversion members in correspondence with a plurality of fundamental colors, said transfer members storing and transferring the image signals corresponding tot he fundamental colors, which are supplied from said photoelectric conversion members;

wherein each of said photoelectric conversion members includes a photoelectric image sensor for sequentially providing R, G and B image signals;

said transfer members include a plurality of vertical transfer arrays, provided for each of photoelectric image sensors, for storing the R, G and B image signals, respectively, which are sequentially output from a corresponding photoelectric image sensor and transferring the stored image signals in the vertical direction; and

a plurality of horizontal transfer arrays coupled to said plurality of vertical transfer arrays, respectively, for storing image signals from said vertical transfer arrays and transferring the stored image signals in the horizontal direction.