Title:
CIRCUIT AND METHOD FOR PREVENTING THE GENERATION OF EXCESSIVE HIGH VOLTAGE
Document Type and Number:
WIPO Patent Application WO2003092024
Kind Code:
A3
Abstract:
A high voltage protection circuit comprises a high voltage generator. A means provides a sensed signal representing the output of the high voltage circuit. A memory contains a representation of a reference value. The reference value is associated with the maximum high voltage allowed in a certain operating mode of a device supplied with high voltage from the high voltage generator. Further, there is a comparator for comparing the sensed signal with the reference signal to detect a fault situation. The means for developing a signal representing the output high voltage is programmable. In this way different switching levels of the comparator are selectable even though the reference signal remains unchanged.
Inventors:
JACKSON DAVID ROSS (US)
BURNETT ANGELA RENEE (US)
MAIORANO MICHAEL (DE)
HARDINGE CHARLES (DE)
BURNETT ANGELA RENEE (US)
MAIORANO MICHAEL (DE)
HARDINGE CHARLES (DE)
Application Number:
PCT/EP2003/003821
Publication Date:
April 01, 2004
Filing Date:
April 12, 2003
Export Citation:
Assignee:
THOMSON LICENSING SA (FR)
JACKSON DAVID ROSS (US)
BURNETT ANGELA RENEE (US)
MAIORANO MICHAEL (DE)
HARDINGE CHARLES (DE)
JACKSON DAVID ROSS (US)
BURNETT ANGELA RENEE (US)
MAIORANO MICHAEL (DE)
HARDINGE CHARLES (DE)
International Classes:
H04N3/18; G09G1/00; H04N3/20; (IPC1-7): H04N3/20
Foreign References:
| EP1098427A1 | 2001-05-09 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 015, no. 233 (E - 1077) 14 June 1991 (1991-06-14)
PATENT ABSTRACTS OF JAPAN vol. 016, no. 271 (E - 1218) 18 June 1992 (1992-06-18)
PATENT ABSTRACTS OF JAPAN vol. 016, no. 271 (E - 1218) 18 June 1992 (1992-06-18)
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