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Claims  |
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What is claimed is:
1. A power saving apparatus for use in peripheral equipment comprising:
external control means for generating an operation control signal
indicative of an OFF mode, said OFF mode indicating that said external
control means has not received a data input from a user for a
predetermined period of time;
power supply means for generating operating power and supplying the
operating power to said peripheral equipment;
control input detection means for detecting a control mode indicated by
said operation control signal, said control input detection means
comprising:
frequency voltage converter means for receiving said operation control
signal and generating a converted signal having a voltage magnitude
corresponding to a frequency of said operation control signal; and
comparator means for receiving said converted signal and providing a power
control signal in dependence upon said converted signal; and
power control means for receiving said power control signal and
interrupting operating power supplied to the peripheral equipment from
said power supply means when said control input detection means determines
that said control mode indicates said OFF mode.
2. The power saving apparatus as claimed in claim 1, further comprised of
said power control means comprising:
switching means connected between an alternating current power input and
said power supply means; and
driving means for switching said switching means to prevent said
alternating current power input from delivering operating power to said
power supply means when said control input detection means determines that
said control mode indicates said OFF mode.
3. The power saving apparatus as claimed in claim 1, further comprised of
said power supply means comprising:
an input rectifying circuit for receiving input power from a power input
portion, said input rectifying circuit rectifying said input power and
supplying rectified power to a transformer and to a voltage terminal of a
pulse width modulation controller, said pulse width modulation controller
generating a pulse width modulation signal;
switching means for switching a primary side of said transformer in
response to said pulse width modulation signal, said switching operation
inducing power in a secondary side of said transformer; and
a plurality of output rectifying circuits for rectifying and smoothing the
induced power and supplying operating power to a main circuit.
4. The power saving apparatus as claimed in claim 3, further comprised of
said power supply means generating power at a plurality of voltage levels.
5. The power saving apparatus as claimed in claim 1, further comprised of
said power control means comprising:
a first transistor having a principal electrical conduction path
electrically connected to an output port of said control input detection
means to receive said power control signal; and
photo-coupling means electrically connected to said first transistor and
cutting off the operating power supplied to said peripheral equipment from
said power supply means in dependence upon a logic state of said power
control signal.
6. The power saving apparatus as claimed in claim 5, further comprised of
said power supply means comprising:
an input rectifying circuit for receiving input power from a power input
portion, said input rectifying circuit rectifying said input power and
supplying rectified power to a transformer and to a voltage terminal of a
pulse width modulation controller, with said pulse width modulation
controller generating a pulse width modulation signal;
switching means for switching a primary side of said transformer in
response to said pulse width modulation signal, said switching .operation
inducing power in a secondary side of said transformer; and
plurality of output rectifying circuits for rectifying and smoothing the
induced power and supplying operating power to a main circuit.
7. The power saving apparatus as claimed in claim 6, further comprised of
said control input detection means detecting signals when said operation
control signal has a predetermined frequency.
8. The power saving apparatus as claimed in claim 6, further comprised of
said power supply means for generating power at a plurality of voltage
levels.
9. A power saving apparatus for use in peripheral equipment comprising:
computing means for generating a control signal indicative of an
operational mode of said computing means;
means for responding to said control signal by detecting an OFF mode
indicating that said computing means has not received a data input for a
predetermined period of time, said detecting means comprising:
frequency voltage converter means for receiving said control signal and
generating a converted signal having a voltage magnitude corresponding to
a frequency of said control signal; and
comparator means for receiving said convened signal and providing a power
control signal in dependence upon said converted signal;
means for generating operating power and supplying said operating power to
the peripheral equipment; and
power control means for receiving said power control signal and preventing
delivery of the operating power to the peripheral equipment when said
power control signal indicates that said OFF mode is detected.
10. A power saving apparatus for use in peripheral equipment comprising:
external control means for generating an operation control signal
indicative of a control mode, said control mode being one of an ON mode
and an OFF mode and corresponding to a state of use of said external
control means;
control input detection means for detecting the control mode indicated by
said operation control signal, said control input detection means
comprising:
frequency voltage converter means for receiving said operation control
signal and generating a converted signal having a voltage magnitude
corresponding to a frequency of said operation control signal; and
comparator means for receiving said convened signal and providing a power
control signal in dependence upon said converted signal;
main power supply means for generating operating power and supplying said
operating power to said peripheral equipment and to said control input
detection means;
main power control means for receiving said power control signal and
interrupting operation of said main power supply means when the control
mode detected by said control input detection means indicates said OFF
mode, and for restarting operation of said main power supply means when
the control mode detected by said control input detection means indicates
said ON mode; and
auxiliary power supply means for generating operating power for said
control input detection means when the control mode detected by said
control input detection means indicates said OFF mode.
11. The power saving apparatus as claimed in claim 10, further comprised of
said main power supply means comprising:
an input rectifying circuit for receiving input power from a power input
portion, said input rectifying circuit rectifying said input power and
supplying rectified power to a transformer and to a voltage terminal of a
pulse width modulation controller, said pulse width modulation controller
generating a pulse width modulation signal;
switching means for switching a primary side of said transformer in
response to said pulse width modulation signal, said switching operation
inducing power in a secondary side of said transformer; and
a plurality of output rectifying circuits for rectifying and smoothing the
induced power and supplying operating power to a main circuit.
12. The power saving apparatus as claimed in claim 10, further comprised of
said main power supply means generating power at a plurality of voltage
levels.
13. The power saving apparatus as claimed in claim 10, further comprising
auxiliary power control means for detecting an operational state of said
main power supply means, said auxiliary power control means stopping
operation of said auxiliary power supply means when said main power supply
means is in an ON state supplying electrical power to said control input
detection means, and restarting operation of said auxiliary power supply
means when said main power supply means is in an OFF state interrupting
said supplying of electrical power to said control input detection means.
14. A power saving apparatus for a monitor, comprising:
external control means for generating first and second synchronizing
signals indicative of a control mode, said control mode being one of a
standby mode for interrupting video signals provided to said monitor, and
an OFF mode for interrupting operating power provided to said monitor,
said first and second synchronizing signals corresponding to a state of
use of said external control means;
control mode detection means for detecting the control mode indicated by
said first and second synchronizing signals, said control mode detection
means comprising first and second input detectors and mode decoding means
for decoding outputs of said first and second input detectors, said first
input detector comprising:
first frequency voltage converter means for receiving said first
synchronizing signal and generating a first converted signal having a
voltage magnitude corresponding to a frequency of said first synchronizing
signal; and
first comparator means for receiving said first converted signal and
providing a first control signal to a first input port of said mode
decoding means; said second input detector comprising:
second frequency voltage converter means for receiving said second
synchronizing signal and generating a second converted signal having a
voltage magnitude corresponding to a frequency of said second
synchronizing signal; and
second comparator means for receiving said second converted signal and
providing a second control signal to a second input port of said mode
decoding means;
video control means for receiving a video control signal based on said
first and second control signals from a first output port of said mode
decoding means and muting a video signal to be processed by video
processing means of said monitor when the control mode detected by said
control mode detection means indicates said standby mode;
power supply means for generating said operating power and supplying said
operating power to said control mode detection means, to a video driving
stage of said monitor and to a video display of said monitor; and
power control means for receiving a power control signal based on said
first and second control signals from a second output port of said mode
decoding means and interrupting transmission of said operating power from
said power supply means when the control mode detected by said control
mode detection means indicates said OFF mode.
15. The power saving apparatus as claimed in claim 14, further comprised of
said mode decoding means comprising:
first and second buffer means for receiving and buffering said first and
second control signals, respectively;
an exclusive OR gate for logically combining a first output signal from
said first buffer means with a second output signal from said second
buffer means to generate said video control signal; and
a NOR gate for logically combining said first output signal from said first
buffer means with said second output signal from said second buffer means
to generate said power control signal.
16. A power saving apparatus for use in a monitor comprising:
external control means for generating first and second synchronizing
signals indicative of a control mode, said control mode being one of an ON
mode for supplying operating power to said monitor, an OFF mode for
interrupting operating power provided to said monitor, and a standby mode
for interrupting video signals provided to said monitor, said first and
second synchronizing signals corresponding to a state of use of said
external control means;
control mode detection means for detecting the control mode indicated by
said operation control signal, said control mode detection means
comprising first and second input detectors and mode decoding means for
decoding outputs of said first and second input detectors, said first
input detector comprising:
first frequency voltage converter means for receiving said first
synchronizing signal and providing a first converted signal having a
voltage magnitude corresponding to a frequency of said first synchronizing
signal; and
first comparator means for receiving said first converted signal and
providing a first control signal to a first input port of said mode
decoding means; said second input detector comprising:
second frequency voltage converter means for receiving said second
synchronizing signal and generating a second converted signal having a
voltage magnitude corresponding to a frequency of said second
synchronizing signal; and
second comparator means for receiving said second convened signal and
providing a second control signal to a second input port of said mode
decoding means;
video control means for receiving a video control signal based on said
first and second control signals from a first output port of said mode
decoding means and muting a video signal to be processed by video
processing means of said monitor when the control mode detected by said
control mode detection means indicates said standby mode;
main power supply means for generating said operating power and supplying
said operating power to said control mode detection means and to driving
and display means of said monitor;
main power control means for receiving a power control signal based on said
first and second control signals from a second output port of said mode
decoding means and stopping operation of said main power supply means when
the control mode detected by said control mode detection means indicates
said OFF mode, and restarting operation of said main power supply means
when the control mode detected by said control mode detection means
indicates said ON mode; and
auxiliary power supply means for generating operating power for said
control mode detection means when the control mode detected by said
control mode detection means indicates said OFF mode.
17. The power saving apparatus as claimed in claim 16, further comprising
auxiliary power control means for detecting an operational state of said
main power supply means, said auxiliary power control means stopping
operation of said auxiliary power supply means when said main power supply
means is in an ON state supplying electrical power to said control mode
detection means, and restarting operation of said auxiliary power supply
means when said main power supply means is in an OFF state interrupting
said supplying of electrical power to said control mode detection means.
18. The power saving apparatus as claimed in claim 16, further comprised of
said mode decoding means comprising:
first and second inverters for inverting said first and second control
signals, respectively, to generate first and second inverted signals;
third and fourth inverters for inverting said first and second inverted
signals, respectively, to generate third and fourth inverted signals;
a first AND gate for logically combining said first inverted signal with
said fourth s inverted signal to generate said video control signal;
a second AND gate for logically combining said second inverted signal with
said third inverted signal to generate a power switching control signal;
and
a third AND gate for logically combining said first inverted signal with
said second inverted signal to generate said power control signal.
19. The power saving apparatus as claimed in claim 18, further comprising
power supply switching means electrically connected between said main
power supply means and said driving and display means of said monitor for
selectively supplying operating power to said driving and display means in
dependence upon said power switching control signal.
20. A power saving apparatus for use in a monitor, comprising:
external control means for generating first and second synchronizing
signals indicative of a control mode, said control mode being one of an ON
mode for supplying operating power to said monitor, an OFF mode for
interrupting said operating power provided to said monitor, a suspensory
mode for supplying said operating power to a heater of said monitor, and a
standby mode for interrupting video signals provided to said monitor, said
first and second synchronizing signals corresponding to a state of use of
said external control means;
control mode detection means for detecting the control mode indicated by
said operation control signal, said control mode detection means
comprising first and second input detectors and mode decoding means for
decoding outputs of said first and second input detectors, said first
input detector comprising:
first frequency voltage converter means for receiving said first
synchronizing signal and generating a first convened signal having a
voltage magnitude corresponding to a frequency of said first synchronizing
signal; and
first comparator means for receiving said first converted signal and
providing a first control signal to a first input port of said mode
decoding means;
said second input detector comprising:
second frequency voltage converter means for receiving said second
synchronizing signal and generating a second converted signal having a
voltage magnitude corresponding to a frequency of said second
synchronizing signal; and
second comparator means for receiving said second converted signal and
providing a second control signal to a second input port of said mode
decoding means;
video control means for receiving a video control signal based on said
first and second control signals from a first output port of said mode
decoding means and muting a video signal to be processed by video
processing means of said monitor when the control mode detected by said
control mode detection means indicates said standby mode;
main power supply means for generating operating power and supplying said
operating power to display driving means of said monitor and to said
control mode detection means;
main power control means for receiving a power control signal based on said
first and second control signals from a second output port of said mode
decoding means and stopping operation of said main power supply means when
the control mode detected by said control mode detection means indicates
said OFF mode, and restarting operation of said main power supply means
when the control mode detected by said control mode detection means
indicates said ON mode;
auxiliary power supply means for generating said operating power for said
control mode detection means when the control mode detected by said
control mode detection means indicates said OFF mode; and
power supply switching means connected between said main power supply means
and said display driving means for interrupting operating power to said
display driving means when the control mode detected by said control mode
detection means indicates said suspensory mode.
21. The power saving apparatus as claimed in claim 20, further comprising
auxiliary power control means for detecting an operational state of said
main power supply means, said auxiliary power control means stopping
operation of said auxiliary power supply means when said main power supply
means is in an ON state supplying electrical power to said control mode
detection means, and restarting operation of said auxiliary power supply
means when said main power supply means is in an OFF state interrupting
said supplying of electrical power to said control mode detection means.
22. The power saving apparatus as claimed in claim 20, further comprised of
said mode decoding means comprising:
first and second inverters for inverting said first and second control
signals, respectively, to generate first and second inverted signals;
third and fourth inverters for inverting said first and second inverted
signals, respectively, to generate third and fourth inverted signals;
a first AND gate for logically combining said first inverted signal with
said fourth inverted signal to generate said video control signal;
a second AND gate for logically combining said second inverted signal with
said third inverted signal to generate a power switching control signal to
control operation of said power supply switching means; and
a third AND gate for logically combining said first inverted signal with
said second inverted signal to generate said power control signal.
23. A power saving apparatus for use in a monitor of a computer comprising:
control mode detection means for detecting a control mode corresponding to
a presence or absence of a horizontal synchronizing signal and a vertical
synchronizing signal, said control mode being one of an ON mode for
supplying operating power to said monitor, an OFF mode for interrupting
said operating power provided to said monitor, a suspensory mode for
supplying said operating power to a heater of said monitor, and a standby
mode for interrupting video signals provided to said monitor, said
horizontal and vertical synchronizing signals corresponding to the
computer's state of use, said control mode detection means comprising
first and second input detectors for respectively processing said
horizontal synchronizing signal and said vertical synchronizing signal and
a mode decoding means for decoding outputs of said first and second input
detectors, said first input detector comprising:
first frequency voltage converter means for receiving said horizontal
synchronizing signal and generating a first converted signal having a
voltage magnitude corresponding to a frequency of said horizontal
synchronizing signal; and
first comparator means for receiving said first convened signal and
providing a first control signal to a first input port of said mode
decoding means;
said second input detector comprising:
second frequency voltage converter means for receiving said vertical
synchronizing signal and generating a second converted signal having a
voltage magnitude corresponding to a frequency of said vertical
synchronizing signal; and
second comparator means for receiving said second converted signal and
providing a second control signal to a second input port of said mode
decoding means;
video control means for receiving a video control signal based on said
first and second control signals from a first output port of said mode
decoding means and muting a video signal to be processed by video
processing means of said monitor when the control mode detected by said
control mode detection means indicates said standby mode;
main power supply means for generating operating power and supplying said
operating power to display driving means of said monitor and to said
control mode detection means;
main power control means for receiving a power control signal based on said
first and second control signals from a second output port of said mode
decoding means and stopping operation of said main power supply means when
the control mode detected by said control mode detection means indicates
said OFF mode, and restarting operation of said main power supply means
when the control mode detected by said control mode detection means
indicates said ON mode;
auxiliary power supply means for generating said operating power for said
control mode detection means and said main power control means when the
control mode detected by said control mode detection means indicates said
OFF mode; and
power supply switching means connected between said main power supply means
and said display driving means for cutting off operating power to said
display driving means when the control mode detected by said control mode
detection means indicates said suspensory mode.
24. The power saving apparatus as claimed in claim 23, further comprising
auxiliary power control means for detecting an operational state of said
main power supply means, said auxiliary power control means stopping
operation of said auxiliary power supply means when said main power supply
means is in an ON state supplying electrical power to said control mode
detection means and said main power control means, and restarting
operation of said auxiliary power supply means when said main power supply
means is in an OFF state interrupting said supplying of electrical power
to said control mode detection means and said main power control means.
25. The power saving apparatus as claimed in claim 23, further comprised of
said control mode detection means comprising:
said mode decoding means for decoding said first and second control signals
of said first and second input detection means, respectively, to detect
said control mode.
26. The power saving apparatus as claimed in claim 25, further comprised of
said mode decoding means comprising:
first and second inverters for inverting said first and second control
signals, respectively, to generate first and second inverted signals;
third and fourth inverters for inverting said first and second inverted
signals, respectively, to generate third and fourth inverted signals;
a first AND gate for logically combining said first inverted signal with
said fourth inverted signal to generate said video control signal;
a second AND gate for logically combining said second inverted signal with
said third inverted signal to generate a power switching control signal to
control operation of said power supply switching means; and
a third AND gate for logically combining said first inverted signal with
said second inverted signal to generate said power control signal.
27. A power saving apparatus for use in a monitor of a computer comprising:
control mode detection means for detecting a control mode corresponding to
presence or absence of a horizontal synchronizing signal and a vertical
synchronizing signal, said control mode being one of an ON mode, an OFF
mode, a suspensory mode, and a standby mode and corresponding to the
computer's state of use, said control mode detection means comprising:
first control input detection means for detecting presence or absence of
said horizontal synchronizing signal by converting said horizontal
synchronizing signal into a first signal having a voltage level
corresponding to a frequency of said horizontal synchronizing signal;
second control input detection means for detecting presence or absence of
said vertical synchronizing signal by converting said vertical
synchronizing signal into a second signal having a voltage level
corresponding to a frequency of said vertical synchronizing signal; and
mode decoding means for decoding said first and second signals of said
first and second input detection means to detect said control mode.;
video control means for muting a video signal processed by video processing
means of said monitor when the control mode detected by said control mode
detection means indicates said standby mode;
main power supply means for generating operating power and supplying said
operating power to display driving means, to display means, and to said
control detection means;
main power control means for stopping operation of said main power supply
means when the control mode detected by said control mode detection means
indicates said OFF mode, and restarting operation of said main power
supply means when the control mode detected by said control mode detection
means indicates said ON mode;
auxiliary power supply means for generating operating power for said
control mode detection means and said main power control means;
auxiliary power control means for detecting an operational state of said
main power supply means, said auxiliary power control means stopping
operation of said auxiliary power supply means when said main power supply
means is in an ON state, and restarting operation of said auxiliary power
supply means when said power supply means is in an OFF state; and
power supply switching means connected between said main power supply means
and said display driving means for cutting off operating power to said
display driving means when the control mode detected by said control mode
detection means indicates said suspensory mode. |
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