Television – Camera – system and detail – Solid-state image sensor
Patent
1995-04-17
1997-09-02
Garber, Wendy
Television
Camera, system and detail
Solid-state image sensor
348312, H04N 314
Patent
active
056637616
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a solid-state image pick-up apparatus using two line simultaneous read-out type solid-state image sensor in which image pick-up information of all pixels are line-sequentially read out by two lines every one field.
BACKGROUND ART
Hitherto, in order to cope with High Definition (HD) television system such as so called high vision, etc., realization of higher resolution of video cameras is being developed. At the image pick-up (imaging) section of the solid-state image pick-up (imaging) apparatus, as a solid-state image sensor of the Progressive Scan system adapted for reading out image pick-up information of all pixels every field, there is used, e.g., a two line simultaneous read-out type CCD image sensor in which image pick-up information of all pixels are line-sequentially read out by two lines every one field.
This two line simultaneous read-out type CCD image sensor comprises, as shown in FIG. 1, for example, respective vertical transfer register sections VR formed in a vertical direction along light receiving sections P.sub.O, P.sub.E arranged in a matrix form in correspondence with respective pixels, and two horizontal transfer register sections HR.sub.1, HR.sub.2 provided in parallel at the terminating portions of these vertical transfer register sections VR. In this CCD image sensor, respective image pick-up information obtained by the light receiving sections P.sub.O, P.sub.E are transferred independently each other to the two horizontal register sections HR.sub.1, HR.sub.2 by two lines every one horizontal scanning period through the vertical transfer register sections VR, and image pick-up information of all pixels are read out through respective signal output terminals T.sub.1, T.sub.2 from the two horizontal transfer register sections HR.sub.1, HR.sub.2 every one field.
Moreover, in the solid-state image pick-up apparatus using two line simultaneous read-out type CCD image sensor, image pick-up information of all pixels are line-sequentially read out by two lines every one field to form high definition television signals from respective image pick-up signals S.sub.ODD, S.sub.EVEN to output them, or to form a television signal of one channel in conformity with the standard television system such as NTSC system, etc. from respective image pick-up signals S.sub.ODD, S.sub.EVEN by signal processing to carry out additive synthesis through field memory, or the like, thus to output such television signal.
Here, since interlace scanning is employed in the standard television system such as NTSC system, etc., ordinary one line read-out type CCD image sensor is adapted to cope with the above-mentioned interlace scanning in a manner as described below.
Namely, in the frame storage mode where charge storage (time) period of each light receiving section is caused to be one frame (time) period, an approach is employed to read out image pick-up charges obtained at light receiving sections of odd lines as image pick-up output of odd field, and to read out image pick-Up charges obtained at light receiving sections of even lines as image pick-up output of even field to thereby obtain an interlaced image pick-up output. Moreover, in the field storage mode where charge storage (time) period of each light receiving section is caused to be one field (time) period, an approach is employed to additively mix image pick-up charges obtained at light receiving sections of odd lines and image pick-up charges obtained at light receiving sections of even lines to read out them to switch, in upper and lower directions, lines to be added every one field to thereby obtain an interlaced image pick-up output.
As stated above, in ordinary CCD image sensor adapted to cope with interlace scanning, it is impossible to allow resolution with respect to object having movement (motion), i.e., dynamic resolution to be high.
In view of this, in industrial image pick-up apparatuses adapted for imaging (image-pick up), as still picture, object mounted on a transfer body such as a belt conveyer,
REFERENCES:
patent: 4314279 (1982-02-01), Yoshida
patent: 4455575 (1984-06-01), Murakoshi
patent: 4472741 (1984-09-01), Takatsu et al.
patent: 4837630 (1989-06-01), Ueda
patent: 5025318 (1991-06-01), Nagura
patent: 5148013 (1992-09-01), Yamada
Frommer William S.
Garber Wendy
Sinderbrand Alvin
Sony Corporation
LandOfFree
Solid-state image pick-up apparatus with two channels does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solid-state image pick-up apparatus with two channels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solid-state image pick-up apparatus with two channels will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-312721