Digital protection circuit for CRT based display systems

Details Digital protection circuit for CRT based display systems Digital protection circuit for CRT based display systems

1996-12-02

2000-09-19

Kemper, Melanie

Data processing: measuring, calibrating, or testing

Measurement system

Performance or efficiency evaluation

702186, G04N 563

Patent

active

061226041

ABSTRACT:
The present invention relates to digital protection circuits in a CRT based display system for the purpose of providing hardware protections to the system before exactly removing a crisis. Self-testing and diagnostic capabilities are also supplemented in a CRT based monitor that are used to lacking in the monitor. The protection circuit basically includes a microprocessor section, a timer section, a register section, a digital to analog converter section, an analog to digital converter section, a non-volatile memory section, and an analog section. All sections can be integrated in a single chip and share a single controller. By using two diodes with their negative terminals coupled together to supplement capabilities of self-testing and diagnostic even when lack of power supplying. All implementations mentioned above can be easily achieved at a very low additional cost.

REFERENCES:
patent: 4641064 (1987-02-01), Testin et al.
patent: 4858006 (1989-08-01), Suzuki et al.
patent: 4870529 (1989-09-01), Powell et al.
patent: 5162623 (1992-11-01), Tachino
patent: 5327175 (1994-07-01), Tan et al.
patent: 5430596 (1995-07-01), Hamaguchi et al.
patent: 5631698 (1997-05-01), Lee

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