Digital differential amplifier for CCD arrangements

Details Digital differential amplifier for CCD arrangements Digital differential amplifier for CCD arrangements

1976-08-25

1978-02-21

Anagnos, Larry N.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307200B, 307221D, 307264, 307DIG3, 307279, H03K 518, H03K 502, H01L 2978

Patent

active

040755150

ABSTRACT:
Digital differential amplifier with pre-chargeable parasitic capacitances to switch on or hold blocked output transistors discharging or not discharging an output capacitance via a constant current sink for a combination of two charge coupled devices. The digital differential amplifier detects the presence or absence of charge on the output of a first charge coupled device and inputs a corresponding charge to a second charge coupled device. The combination of the two charge coupled devices with two digital differential amplifiers and two control transistors is such that stored charges may be recirculated between the two charge coupled devices or previously stored data may be serially read from the output of one charge coupled device and new data may be serially written into the input of the other charge coupled device. A method of recirculating previously stored data or writing new data into the second charge coupled device using precharged parasitic and diffusion zone capacitances is also described.

REFERENCES:
patent: 3758794 (1973-09-01), Kosonocky
patent: 3814955 (1974-06-01), Itoh et al.
patent: 3826926 (1974-07-01), White et al.
patent: 3944990 (1976-03-01), Chou
patent: 3949245 (1976-04-01), Emmons
patent: 3971003 (1976-07-01), Kosonocky
patent: 3979603 (1976-09-01), Gosney
patent: 4004164 (1977-01-01), Cranford, Jr. et al.
Dennard, "Regeneration Circuit for CCD Shift Registers"; IBM Tech. Discl. Bull., vol. 14, No. 12, pp. 3791-3792; 5/1972.
Dennard et al, "Read/Write Amplifier for CCD Memory"; IBM Tech. Discl. Bull., vol. 14, No. 12, pp. 3722-3723; 5/1972.

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