Electric power cut-off detection unit for a monitor
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United States of America Patent
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Jun 10, 1997
Grant Date -
N/A
app pub date -
Oct 27, 1995
filing date -
Oct 28, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is an electric power cut-off detection unit for a monitor which has a full-wave rectifier for generating a first direct voltage, a second voltage generator for generating a second direct voltage, a third direct voltage generator for generating a third direct voltage, a fourth direct voltage generator for inputting the first and the third direct voltages and for outputting a fourth direct voltage according to an input of the first direct voltage, and microprocessor for inputting the third direct voltage as an operation voltage, monitoring the fourth direct voltage and for storing data concerning operation states of the monitor as safety measures according to the fourth direct voltage during inputting the third direct voltage on a power cut-off or a power failure. With such safety measures of microprocessor for the monitor, inconvenience for a user to readjust monitor's display states can be eliminated when a normal alternate electric power is resupplied and a prevention of a damage to the monitor can be achieved by eliminating a damage with a deflection circuit.
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