US6178513B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power control apparatus and method using digital switch in display unit
Assignee: Samsung Electronics Co Ltd
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Filing: 1998-07-02
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Granted: 2001-01-23
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Expires: 2018-07-02
Abstract
Abstract A power control apparatus in a display unit having a universal serial bus (USB) hub includes: a microcomputer producing a control signal for switching a power management state to an OFF mode or a normal mode according to “ON/OFF” operation of a digital switch; a power supply for supplying overall power to circuits in the display unit; and a switching unit for switching power supply to a deflection circuit and a video circuit according to the power control signal from the microcomputer. The power to the display unit is switched using the digital switch, and a predetermined voltage is continuously supplied to the microcomputer even in an OFF state of the display unit. As a result, the microcomputer selectively forwards the control signal to the switching unit according to existence and/or non-existence of sync signals, a display data channel (DDC) signal, or a USB signal received from a computer, as well as the types of those signals.
Inventors
- 👤 Ji-Young Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:54
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/14; G09; G09G; G09G5/00; G09G5/003; G09G5/006; G06F1/00; G06F1/26; G06F1/266; G09G2330/00; G09G2330/02; G09G2330/021; G09G2330/022; G09G2370/00; G09G2370/04; G09G2370/045; G09G2370/047; H; H04; H04N; H04N5/00; H04N5/63
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
183 words
A power control apparatus in a display unit having a universal serial bus (USB) hub, the apparatus comprising: microcomputer means for producing a control signal for selectively switching a power management state to an OFF mode and to a normal mode according to off and on operation, respectively, of a digital switch; power supply means for supplying power to circuits in the display unit; and switching means for switching power supply to a deflection circuit and a video circuit according to the control signal from the microcomputer means; wherein the power to the display unit is switched using the digital switch and a predetermined voltage is continuously supplied to the microcomputer means, even in an OFF state of the display unit; and wherein said microcomputer means selectively forwards the control signal to the switching means according to existence and non-existence of at least one of a sync signal, a display data channel (DDC) signal and a USB signal received from a computer and according to a type of said at least one of a sync signal, a DDC signal and a USB signal.
Claim 2
Dependent Claim
183 words
A power control apparatus in a display unit having a universal serial bus (USB) hub, the apparatus comprising: microcomputer means for producing a control signal for selectively switching a power management state to an OFF mode and to a normal mode according to off and on operation, respectively, of a digital switch; power supply means for supplying power to circuits in the display unit; and switching means for switching power supply to a deflection circuit and a video circuit according to the control signal from the microcomputer means; wherein the power to the display unit is switched using the digital switch and a predetermined voltage is continuously supplied to the microcomputer means, even in an OFF state of the display unit; and wherein said microcomputer means selectively forwards the control signal to the switching means according to existence and non-existence of at least one of a sync signal, a display data channel (DDC) signal and a USB signal received from a computer and according to a type of said at least one of a sync signal, a DDC signal and a USB signal.
Claim 3
Dependent Claim
34 words
The apparatus according to claim 1 , wherein a predetermined voltage is supplied to the microcomputer means and a power supply to said circuits is cut off when the digital switch is turned “OFF”.
Claim 4
Dependent Claim
37 words
The apparatus according to claim 1 , wherein a predetermined power is supplied to perform DDC communication when the DDC signal is provided while the digital switch is in the “OFF” state, thereby cutting off the power.
Claim 5
Dependent Claim
43 words
The apparatus according to claim 1 , wherein power is selectively supplied to a USB block when the USB signal is provided in the “OFF” state of the digital switch, thereby performing USB data transmission in the “OFF” state of the display unit.
Claim 6
Dependent Claim
42 words
The apparatus according to claim 1 , wherein said switching means performs switching to supply the power to the circuits when the sync signals are provided by the computer in the “OFF” state of the digital switch, which cuts off the power.
Claim 7
Dependent Claim
164 words
A power control method using a digital switch in a display unit, comprising the steps of: selectively turning on and off power based upon a current state of a power ON flag when the digital switch is actuated; producing a power control signal corresponding to one of a display data channel signal and a universal serial bus signal by way of interrupt in a power OFF mode of said display unit; and returning said display unit to a normal mode in response to sync signals from a computer in the power OFF mode of the display unit; wherein, in response to said power control signal corresponding to the display data channel signal, a further control signal is generated so that power is supplied to only a portion of the display unit; and wherein, in response to said power control signal corresponding to the universal serial bus signal, a further control signal is generated so that power is supplied to a universal serial bus component.
Claim 8
Dependent Claim
164 words
A power control method using a digital switch in a display unit, comprising the steps of: selectively turning on and off power based upon a current state of a power ON flag when the digital switch is actuated; producing a power control signal corresponding to one of a display data channel signal and a universal serial bus signal by way of interrupt in a power OFF mode of said display unit; and returning said display unit to a normal mode in response to sync signals from a computer in the power OFF mode of the display unit; wherein, in response to said power control signal corresponding to the display data channel signal, a further control signal is generated so that power is supplied to only a portion of the display unit; and wherein, in response to said power control signal corresponding to the universal serial bus signal, a further control signal is generated so that power is supplied to a universal serial bus component.
Claim 9
Dependent Claim
151 words
A power control apparatus for a display unit having a universal serial bus (USB) hub, the apparatus comprising: a digital switch operable by a user to an off position and an on position; microcomputer means connected to said digital switch for producing a control signal for selectively switching a power management state of said display unit to an off mode and to a normal mode of operation according to off operation and on operation, respectively, of the digital switch; power supply means for supplying power to circuitry of the display unit; and s switching means for selectively switching power supply to a deflection stage and a video stage, respectively, of the display unit according to the control signal from the microcomputer means; wherein said microcomputer means selectively forwards the control signal to the switching means according to existence and non-existence of signals received from a computer associated with the display unit.
Claim 10
Dependent Claim
151 words
A power control apparatus for a display unit having a universal serial bus (USB) hub, the apparatus comprising: a digital switch operable by a user to an off position and an on position; microcomputer means connected to said digital switch for producing a control signal for selectively switching a power management state of said display unit to an off mode and to a normal mode of operation according to off operation and on operation, respectively, of the digital switch; power supply means for supplying power to circuitry of the display unit; and s switching means for selectively switching power supply to a deflection stage and a video stage, respectively, of the display unit according to the control signal from the microcomputer means; wherein said microcomputer means selectively forwards the control signal to the switching means according to existence and non-existence of signals received from a computer associated with the display unit.
Claim 11
Dependent Claim
45 words
The apparatus according to claim 7 , wherein the power to the display unit is switched using the digital switch, and a predetermined voltage is continuously supplied to the microcomputer means in both the off mode and the normal mode of the power management state.
Claim 12
Dependent Claim
17 words
The apparatus according to claim 7 , wherein said signals received from said computer comprise sync signals.
Claim 13
Dependent Claim
21 words
The apparatus according to claim 7 , wherein said signals received from said computer comprise a display data channel (DDC) signal.
Claim 14
Dependent Claim
18 words
The apparatus according to claim 7 , wherein said signals received from said computer comprise a USB signal.
Claim 15
Dependent Claim
17 words
The apparatus according to claim 8 , wherein said signals received from said computer comprise sync signals.
Claim 16
Dependent Claim
21 words
The apparatus according to claim 8 , wherein said signals received from said computer comprise a display data channel (DDC) signal.
Claim 17
Dependent Claim
18 words
The apparatus according to claim 8 , wherein said signals received from said computer comprise a USB signal.
Claim 18
Dependent Claim
38 words
The apparatus according to claim 7 , wherein a predetermined voltage is supplied to the microcomputer means and the power supplied to the circuity of said display unit is cut off when the digital switch is turned “OFF”.
Claim 19
Dependent Claim
37 words
The apparatus according to claim 7 , wherein a predetermined power is supplied to perform DDC communication when the DDC signal is provided while the digital switch is in the “OFF” state, thereby cutting off the power.
Claim 20
Dependent Claim
43 words
The apparatus according to claim 7 , wherein power is selectively supplied to a USB block when the USB signal is provided in the “OFF” state of the digital switch, thereby performing USB data transmission in the “OFF” state of the display unit.
Claim 21
Dependent Claim
46 words
The apparatus according to claim 7 , wherein said switching means performs switching to supply the power to the circuitry of said display unit when the sync signals are provided by the computer in the “OFF” state of the digital switch, which cuts off the power.
Claim 22
Dependent Claim
97 words
A power control method using a digital switch in a display unit, comprising the steps: actuating the digital switch; determining whether a power on flag is set; when the power on flag is set, producing a monitor off signal and assuming a power off mode; when the power on flag is not set, producing a monitor on signal; and when the power off mode is assumed, selectively providing a control signal to switch power supply to circuitry of the display unit according to existence and non-existence of signals received from a computer associated with the display unit.
Claim 23
Dependent Claim
97 words
A power control method using a digital switch in a display unit, comprising the steps: actuating the digital switch; determining whether a power on flag is set; when the power on flag is set, producing a monitor off signal and assuming a power off mode; when the power on flag is not set, producing a monitor on signal; and when the power off mode is assumed, selectively providing a control signal to switch power supply to circuitry of the display unit according to existence and non-existence of signals received from a computer associated with the display unit.
Claim 24
Dependent Claim
24 words
The method according to claim 19 , further comprising the step, when the power on flag is set, of resetting the power on flag.
Claim 25
Dependent Claim
25 words
The method according to claim 19 , further comprising the step, when the power on flag is not set, of setting the power on flag.
Claim 26
Dependent Claim
97 words
A power control method using a digital switch in a display unit, comprising the steps of: maintaining an off mode of the display unit; determining whether the digital switch is actuated; when the digital switch is actuated, canceling the off mode of the display; and when the digital switch is not actuated, checking for an additional signal from a computer associated with the display unit, and selectively providing power to one of a portion of the display unit, a USB component and the display unit in its entirety in response to the additional signal from the computer.
Claim 27
Dependent Claim
97 words
A power control method using a digital switch in a display unit, comprising the steps of: maintaining an off mode of the display unit; determining whether the digital switch is actuated; when the digital switch is actuated, canceling the off mode of the display; and when the digital switch is not actuated, checking for an additional signal from a computer associated with the display unit, and selectively providing power to one of a portion of the display unit, a USB component and the display unit in its entirety in response to the additional signal from the computer.
Claim 28
Dependent Claim
34 words
The method according to claim 22 , wherein said additional signal comprises a display data channel (DDC) signal; and wherein, when the DDC signal is detected, power voltage is supplied to the display unit.
Claim 29
Dependent Claim
38 words
The method according to claim 22 , wherein said additional signal comprises a universal serial bus (USB) signal; and wherein, when the USB signal is detected, power is supplied to a USB component only of said display unit.
Claim 30
Dependent Claim
49 words
The method according to claim 22 , wherein said additional signal comprises a sync signal; and wherein, when the sync signal is detected, the off mode of the display unit is canceled; and when the sync signal is not detected, the off mode of the display unit is maintained.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-01-23 | 2004-07-24 | 2005-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-23 | 2008-07-24 | 2009-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-23 | 2012-07-24 | 2013-01-23 | $7700.00 | Window Closed / Lapsed |