Charge pump

Details Charge pump Charge pump

2007-08-07

2007-08-07

Awad, Amr A. (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C363S060000

Reexamination Certificate

active

10513535

ABSTRACT:
A charge pump (1) for generating a first output voltage (Vo1) between a first output terminal (E) and a reference terminal (D), and a second output voltage (Vo2) between a second output terminal (F) and the reference terminal (D). The charge pump (1) further comprises a first input terminal (C) for inputting a DC voltage (V), a first storage capacitor (Cr1) coupled between the first output terminal (E) and the reference terminal (D) and a second storage capacitor (Cr2) coupled between the second output terminal (F) and the reference terminal (D). The charge pump (1) further comprises a first terminal (A) and a second terminal (B) for coupling a pump capacitor (Cp) to a first triplet of switches (S1, S2, S5) and to a second triplet of switches (S3, S4, S6). The first triplet of switches (S1, S2, S5) selectively couples the first terminal (A) to either the first input terminal (C) or to the reference terminal (D) or to the second output terminal (F). The second triplet of switches (S3, S4, S6) selectively couples the second terminal (B) to either the first input terminal (C) or to the reference terminal (D) or to the first output terminal (E).

REFERENCES:
patent: 4290100 (1981-09-01), Squires
patent: 4897774 (1990-01-01), Bingham et al.
patent: 5237209 (1993-08-01), Brewer
patent: 5262934 (1993-11-01), Price
patent: 5306954 (1994-04-01), Chan et al.
patent: 5461557 (1995-10-01), Tamagawa
patent: 6229530 (2001-05-01), Ushiki

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