Multiple sampling via a time-indexed method to achieve wide...

Details Multiple sampling via a time-indexed method to achieve wide... Multiple sampling via a time-indexed method to achieve wide...

2005-12-13

2005-12-13

Ometz, David L. (Department: 2615)

Television

Camera, system and detail

Solid-state image sensor

C348S302000, C348S362000

Reexamination Certificate

active

06975355

ABSTRACT:
An architecture for a digital pixel sensor is disclosed in which the dynamic range of the sensor is increased by taking samples of a subject to be recorded, where each sample is taken over an interval of a different duration than the other samples. In the preferred embodiment of the invention, an array of pixel elements is fabricated in an integrated circuit. Each of the pixel elements outputs a digital signal and comprises a photodetector and an analog to digital converter. The photodetector is integrated with the analog to digital converter. An array of threshold memory cells, each corresponding to one of the pixel elements, is also provided. An array of time memory cells, each corresponding to one of the pixel elements, establishes a different sampling time for each of the pixel elements for each of multiple samples. An array of memory elements, each coupled to one of the pixel elements, is also provided. The memory elements are also fabricated in the integrated circuit. The memory elements only receive a value from a corresponding one of the pixel elements when the content in a corresponding one of the threshold memory cells permits. In this way, multiple samples may be collected for a subject to be recorded to thereby extend the dynamic range of a photodetector. Integration of the photodetector and the memory that implements this mechanism into the same integrated circuit avoids the latency that would be experienced if an external memory was used.

REFERENCES:
patent: 4897880 (1990-01-01), Wilber et al.
patent: 5012344 (1991-04-01), Goto
patent: 5107103 (1992-04-01), Gruss et al.
patent: 5130563 (1992-07-01), Nabet et al.
patent: 5182658 (1993-01-01), Ishizaki et al.
patent: 5272535 (1993-12-01), Elabd
patent: 5309243 (1994-05-01), Tsai
patent: 5329109 (1994-07-01), Kodoma
patent: 5335075 (1994-08-01), Komiya et al.
patent: 5396288 (1995-03-01), Tsugita
patent: 5403772 (1995-04-01), Zhang et al.
patent: 5461425 (1995-10-01), Fowler et al.
patent: 5526092 (1996-06-01), Iwasaki
patent: 5665959 (1997-09-01), Fossum et al.
patent: 5703353 (1997-12-01), Blalock et al.
patent: 5729285 (1998-03-01), Peterson et al.
patent: 5769384 (1998-06-01), Baumgartner et al.
patent: 5781233 (1998-07-01), Lamg et al.
patent: 5801657 (1998-09-01), Fowler et al.
patent: 5818052 (1998-10-01), Elabd
patent: 5841126 (1998-11-01), Fossum et al.
patent: 5872596 (1999-02-01), Yanai et al.
patent: 5883830 (1999-03-01), Hirt et al.
patent: 5886353 (1999-03-01), Spivey et al.
patent: 5886659 (1999-03-01), Pain et al.
patent: 5888857 (1999-03-01), Zhang et al.
patent: 5892540 (1999-04-01), Kozlowski et al.
patent: 5900625 (1999-05-01), Baumgartner
patent: 5909026 (1999-06-01), Zhou et al.
patent: 5917960 (1999-06-01), Sugawa
patent: 5920345 (1999-07-01), Sauer
patent: 5926057 (1999-07-01), Ogawa et al.
patent: 5926214 (1999-07-01), Denyer et al.
patent: 5949064 (1999-09-01), Chow et al.
patent: 5953060 (1999-09-01), Dierickx
patent: 5969758 (1999-10-01), Sauer et al.
patent: 5973311 (1999-10-01), Sauer et al.
patent: 5990469 (1999-11-01), Bechtel et al.
patent: 5990948 (1999-11-01), Sugiki
patent: 6040570 (2000-03-01), Levine et al.
patent: 6069365 (2000-05-01), Chow et al.
patent: 6069376 (2000-05-01), Merrill
patent: 6071826 (2000-06-01), Cho et al.
patent: 6175383 (2001-01-01), Yadid-Pecht et al.
patent: 6229133 (2001-05-01), Hynecek
patent: 6330030 (2001-12-01), O'Connor
patent: 6373050 (2002-04-01), Pain et al.
patent: 6452152 (2002-09-01), Yang
patent: 6614560 (2003-09-01), Silverbrook
patent: 6665010 (2003-12-01), Morris et al.
patent: 6690420 (2004-02-01), Liu
patent: 0 709 893 (1996-05-01), None
patent: 0 725 357 (1996-08-01), None
patent: 0 86 899 (1997-07-01), None
patent: 0 725 357 (1997-07-01), None
patent: 0 786 897 (1997-07-01), None
patent: 0 786 897 (1998-04-01), None
patent: 0 709 893 (1998-08-01), None
patent: 0 86 899 (1998-10-01), None
patent: 0 893 915 (1999-01-01), None
patent: 0 915 518 (1999-05-01), None
patent: 0 915 619 (1999-05-01), None
patent: 0 917 358 (1999-05-01), None
patent: 0 928 102 (1999-07-01), None
patent: 0 948 122 (1999-10-01), None
patent: 0 954 167 (1999-11-01), None
patent: 0 967 656 (1999-12-01), None
patent: 0 893 915 (2000-01-01), None
patent: 04313949 (1992-11-01), None

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