Input bias circuit for gate input type charge transfer device fo

Electrical pulse counters – pulse dividers – or shift registers: c – Charge transfer device – Particular input or output means

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377 59, 377 63, 357 24, 3072966, 307607, G11C 1928, G11C 2704, H01L 2978

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active

051406233

ABSTRACT:
An input bias circuit employs a gate input type CCD register and an inversion-type amplifier. An output node of the inversion-type amplifier is connected to the input gate electrode of the CCD register, and an input signal to be biased is supplied to the input gate electrode. An output node of the inversion-type amplifier is connected to the floating diffusion region of the CCD register, and a signal charge is picked up from the floating diffusion region. A comparator performs comparison among the low level of the injection pulse supplied to the input diffusion region (which serves as an input diode), the potential level of the input signal supplied to the input gate electrode of the CCD register, and the level of the low-level generated by a low-level signal generating means. On the basis of this comparison, the potential level of the input signal of the CCD register is controlled such that it is higher than the low level of the injection pulse.

REFERENCES:
patent: 3999171 (1976-12-01), Parsons
patent: 4139784 (1979-02-01), Sauer
patent: 4156818 (1979-05-01), Collins
patent: 4503550 (1985-03-01), Sauer
patent: 4574384 (1986-03-01), Murata et al.
patent: 4621369 (1986-11-01), Narabu et al.
Carlo H. Sequin and Michael F. Tompsett, Charge Transfer Devices, Bell Telephone Laboratories, Inc., 1975--pp. 42-45.

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