Extended correlated double sampling for charge transfer devices

Details Extended correlated double sampling for charge transfer devices Extended correlated double sampling for charge transfer devices

1975-10-24

1977-07-12

Ruggiero, Joseph F.

Registers

Transfer mechanism

Traveling pawl

307221D, 328167, H03K 5159, G11C 1140

Patent

active

040356299

ABSTRACT:
Extended correlated double sampling (ECDS) for charge transfer devices (CTD) corrects for errors arising in components of the CTD system from the input to the output thereof. Sources of error include bias variations and non-uniformity of thresholds and leakage currents. While applicable to any type of CTD system, for a TDI (time delay integration) application, precise error correction is achieved. Alternate signal level samples and reference level samples, the latter preferably AC zero, are propagated down the CTD channel as a related pair. At the CTD output, the signal and reference level samples of each pair are differenced, thereby correcting the resultant output signal for the noted types of errors. ECDS is compatible with CDS as taught in U.S. Pat. No. 3,781,574 and the two may be used jointly. An application of ECDS in the TDI mode for enhancement of signal outputs from a sensor array is disclosed, along with special parallel signal injection structure and operation for the requisite parallel signal injection into the channel, and special techniques of stabilized charged injection (SCI).

REFERENCES:
patent: 3781574 (1973-12-01), White et al.
patent: 3819953 (1974-06-01), Puckette et al.
patent: 3919468 (1975-11-01), Weimer
patent: 3956585 (1976-05-01), Butler et al.

Affiliated with

Also associated with

Rating

Extended correlated double sampling for charge transfer devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extended correlated double sampling for charge transfer devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extended correlated double sampling for charge transfer devices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-489491