WO1994006072A1 - An apparatus for controlling power supply to a computer monitor - Google Patents

An apparatus for controlling power supply to a computer monitor Download PDF

Info

Publication number
WO1994006072A1
WO1994006072A1 PCT/KR1993/000068 KR9300068W WO9406072A1 WO 1994006072 A1 WO1994006072 A1 WO 1994006072A1 KR 9300068 W KR9300068 W KR 9300068W WO 9406072 A1 WO9406072 A1 WO 9406072A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
pulse generator
power
join port
monitor
Prior art date
Application number
PCT/KR1993/000068
Other languages
French (fr)
Inventor
Deok Woo Kim
Original Assignee
Rho, Gab, Seon
Lee, Jae, Young
Noh, Seon, Bong
Park, Jung, Woo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rho, Gab, Seon, Lee, Jae, Young, Noh, Seon, Bong, Park, Jung, Woo filed Critical Rho, Gab, Seon
Priority to JP6507059A priority Critical patent/JPH08502843A/en
Publication of WO1994006072A1 publication Critical patent/WO1994006072A1/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3215—Monitoring of peripheral devices
    • G06F1/3218—Monitoring of peripheral devices of display devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/005—Power supply circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Definitions

  • This invention relates to an apparatus for controlling power supply to a computer monitor, and in particular, to an apparatus for controlling power supply to a computer monitor so that power supply is automatically cut off when a computer keyboard is not used for a desired amount of time.
  • the object of this invention is to provide an apparatus that will automatically cut off power supply to the monitor when a clock signal from a keyboard discontinues for a desired amount of time. Power supply to the monitor will resume when the keyboard generates clock signals again.
  • the invention is an apparatus for controlling power supply to a computer monitor as defined by the claims and its specific embodiment shown in the attached drawings of this report.
  • the apparatus for controlling power supply to a computer monitor has the following parts: a first, second, third, and fourth join port that connect a computer body, an A.C voltage source, a keyboard, and a monitor.
  • a pulse generator is connected to a connection node A between the first join port and the third join port to generate a power supply control signal in response to a clock signal from the keyboard.
  • a time control circuit is connected between a connection node B in the pulse generator and a Vcc terminal for controlling the duration of the power supply control signal from the pulse generator.
  • a power control circuit is connected between the second join port and the fourth join port, thereby switching the power which is supplied from the A.C voltage source to the monitor in response to the power supply control signal from the pulse generator.
  • the power control circuit of the present invention is comprised of: a photo TRIAC driver PT which is connected to the pulse generator through a resistor R9 and has a diode Dl and a TRIAC Ql; resistors Rl and R3 for current limitation which are connected between the photo TRIAC driver PT and the second join port; and a TRIAC Q2 which is connected between the second join port and the fourth join port, thereby switching the power which is supplied from the A.C voltage source to the monitor. Also, a manual switch SW6 is connected between the second join port and the fourth join port.
  • FIG. 1 illustrates a diagram for explaining the conception of the present invention
  • FIG. 2 illustrates a detailed circuit for an apparatus for controlling power supply to a computer monitor according to the present invention
  • FIG. 3A and 3B illustrate a signal wave form for explaining electrical operation of the detailed circuit of FIG. 2.
  • FIG. 1 illustrates a diagram for explaining the conception of the invention.
  • a first join port JP1 in an apparatus for controlling power supply 3 is connected to a keyboard port 2 in a computer body 1, and a second join port JP2 in the apparatus 3 is also connected to an A.C voltage source 7.
  • a third join port JP3 of the apparatus 3 is connected to a keyboard 4 and a fourth join port JP2 of the apparatus 3 is connected to a monitor 5.
  • a clock signal generated in a clock signal generator (not shown) of the keyboard 4 is transmitted to the apparatus 3, whereby the power from the A.C voltage source 7 is supplied to the monitor 5 by the apparatus 3.
  • the clock signal generator in the keyboard 4 stops generating clock signals for a desired amount of time, the power supplied from the A.C voltage source 7 to the monitor 5 is cut off by the apparatus 3.
  • FIG. 2 illustrates a detailed circuit for the apparatus for controlling power supply to a computer monitor according to the present invention. Electrical operation of the circuit will be described in conjunction with FIG. 3A and 3B.
  • the circuit has a time control circuit 8, a pulse generator 9, and a power control circuit 10.
  • the pulse generator 9 is connected to a connection node A between the first join port JPl and the third join port JP3 ; a time control circuit 8 is connected to a connection node B between a threshold terminal THR and a discharge terminal DIS in an one-short pulse generator 6; the power control circuit 10 is connected to an output terminal Q in the one-short pulse generator 6 through a resistor R9 ; and the power control circuit 10 is also connected between the second join port JP2 and the fourth join port JP4.
  • a clock signal like a signal wave form of FIG. 3A which is generated from the clock signal generator (not shown) by the key operation in the keyboard 4 is transmitted to a trigger terminal TR of the one-short pulse generator 6 through a resistor Rll for current limitation.
  • the one-short pulse generator 6 generates a power supply control signal like a signal wave form of FIG. 3B in response to the clock signal. Then, the power supply control signal is transmitted to a photo TRIAC driver PT through an output terminal Q of the one-short pulse generator 6 and a resistor R9. At this time, the duration T of the power supply control signal from the one-short pulse generator 6 is changed by operation of switches SW1 to SW5. The duration T is determined by the time constant determination circuit consisting of resistors R4, R5, R6, R7 and a capacitor C5.
  • the power supply control signal from the output terminal Q of the one-short pulse generator 6 is not immediately transferred to a low level but is maintained at a high level for the duration T as shown in FIG. 3B. Then, the power supply control signal is transferred to a low level.
  • the clock signal is supplied to the one-short pulse generator 6, the power supply control signal from the output terminal Q in the one-short pulse generator 6 is supplied to a light emitting diode Dl through resistors R9 and RIO, and the light emitting diode Dl is then turned on.
  • a TRIAC Ql in the photo TRIAC driver PT is also turned on.
  • the power from the A.C voltage source 7 that is connected to the second join port JP2 is supplied to the gate electrode of TRIAC Q2 through resistors R3, Rl and the TRIAC Ql, the TRIAC Q2 is turned on. Accordingly, the power from the A.C voltage source 7 is supplied to the fourth join port JP4 through the TRIAC Q2.
  • the photo TRIAC driver PT and the TRIAC Q2 are turned off and consequently the power supplied from the A.C voltage source 7 to the fourth join port JP2 is cut off.
  • capacitors C2 and C3 are used to satisfy the operation condition of the one-short pulse generator 6; a resistor R12 is used to pull up the potential of the connection node A; and a capacitor Cl along with varistors RV1 and RV2 are used to protect a surge, respectively. Also, a manual switch SW6 is used to manually supply the power from the A.C voltage source 7 to the fourth join port JP4.
  • the monitor does not consume any power while the keyboard is not used, because the power supplied to the monitor is controlled automatically.

Abstract

An apparatus for controlling power supply to a computer monitor which comprises a pulse generator, a power control circuit and a time control circuit is disclosed. The power control circuit controls power supply to the monitor with the power supply control signal from the pulse generator, thereby preventing power waste by computers that are left unused.

Description

AN APPARATUS FOR CONTROLLING POWER SUPPLY TO A
COMPUTER MONITOR
Field of the Invention
This invention relates to an apparatus for controlling power supply to a computer monitor, and in particular, to an apparatus for controlling power supply to a computer monitor so that power supply is automatically cut off when a computer keyboard is not used for a desired amount of time.
BACKGROUND OF THE INVENTION
In general, once personal computer users begin to use their personal computer ("PC") , they do not like to turn off their PC's before they finish their work because building up the working environment on a PC again after it has been turned off takes time. Hence, countless numbers of personal computers are left unused with the power turned on, even at this moment, in many offices, schools and government agencies, etc. The color monitor of a PC consumes about 60 to 80 watts an hour. When a monitor is turned on, it dissipates more power than a color television set. Leaving the PC on when it is not in use is a serious power waste on both the personal and national level. Therefore, the object of this invention is to provide an apparatus that will automatically cut off power supply to the monitor when a clock signal from a keyboard discontinues for a desired amount of time. Power supply to the monitor will resume when the keyboard generates clock signals again.
The above function is only one of the various, useful features of the invention. The invention can achieve other advantages when applied in a different manner or modified within the scope of the disclosure.
The summary of the invention and the detailed description of the invention below describe the preferred embodiment of the invention within the scope of its claims.
SUMMARY OF THE INVENTION
The invention is an apparatus for controlling power supply to a computer monitor as defined by the claims and its specific embodiment shown in the attached drawings of this report. The apparatus for controlling power supply to a computer monitor has the following parts: a first, second, third, and fourth join port that connect a computer body, an A.C voltage source, a keyboard, and a monitor. A pulse generator is connected to a connection node A between the first join port and the third join port to generate a power supply control signal in response to a clock signal from the keyboard. A time control circuit is connected between a connection node B in the pulse generator and a Vcc terminal for controlling the duration of the power supply control signal from the pulse generator. A power control circuit is connected between the second join port and the fourth join port, thereby switching the power which is supplied from the A.C voltage source to the monitor in response to the power supply control signal from the pulse generator.
The power control circuit of the present invention is comprised of: a photo TRIAC driver PT which is connected to the pulse generator through a resistor R9 and has a diode Dl and a TRIAC Ql; resistors Rl and R3 for current limitation which are connected between the photo TRIAC driver PT and the second join port; and a TRIAC Q2 which is connected between the second join port and the fourth join port, thereby switching the power which is supplied from the A.C voltage source to the monitor. Also, a manual switch SW6 is connected between the second join port and the fourth join port. The pertinent and important features of the present invention have been outlined above in order to provide a better understanding of the invention. Additional features of the invention described hereinafter further elaborate the claims of the invention. Those skilled in the art can appreciate that the conception and the specific embodiment disclosed herein may be readily utilized as a basis for modifying or designing structures to carry out the same purpose of the present invention. Furthermore, those skilled in the art can realize that such equivalent constructions do not depart from the spirit and scope of the invention as set forth in the claims.
BRIEF DESCRIPTION OF THE DRAWINGS To better understand the nature and objects of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 illustrates a diagram for explaining the conception of the present invention
FIG. 2 illustrates a detailed circuit for an apparatus for controlling power supply to a computer monitor according to the present invention
FIG. 3A and 3B illustrate a signal wave form for explaining electrical operation of the detailed circuit of FIG. 2.
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 illustrates a diagram for explaining the conception of the invention. A first join port JP1 in an apparatus for controlling power supply 3 is connected to a keyboard port 2 in a computer body 1, and a second join port JP2 in the apparatus 3 is also connected to an A.C voltage source 7. Also, a third join port JP3 of the apparatus 3 is connected to a keyboard 4 and a fourth join port JP2 of the apparatus 3 is connected to a monitor 5. When a user hits any key in the keyboard 4, a clock signal generated in a clock signal generator (not shown) of the keyboard 4 is transmitted to the apparatus 3, whereby the power from the A.C voltage source 7 is supplied to the monitor 5 by the apparatus 3. However, when the clock signal generator in the keyboard 4 stops generating clock signals for a desired amount of time, the power supplied from the A.C voltage source 7 to the monitor 5 is cut off by the apparatus 3.
FIG. 2 illustrates a detailed circuit for the apparatus for controlling power supply to a computer monitor according to the present invention. Electrical operation of the circuit will be described in conjunction with FIG. 3A and 3B. The circuit has a time control circuit 8, a pulse generator 9, and a power control circuit 10.
The pulse generator 9 is connected to a connection node A between the first join port JPl and the third join port JP3 ; a time control circuit 8 is connected to a connection node B between a threshold terminal THR and a discharge terminal DIS in an one-short pulse generator 6; the power control circuit 10 is connected to an output terminal Q in the one-short pulse generator 6 through a resistor R9 ; and the power control circuit 10 is also connected between the second join port JP2 and the fourth join port JP4. A clock signal like a signal wave form of FIG. 3A which is generated from the clock signal generator (not shown) by the key operation in the keyboard 4 is transmitted to a trigger terminal TR of the one-short pulse generator 6 through a resistor Rll for current limitation. The one-short pulse generator 6 generates a power supply control signal like a signal wave form of FIG. 3B in response to the clock signal. Then, the power supply control signal is transmitted to a photo TRIAC driver PT through an output terminal Q of the one-short pulse generator 6 and a resistor R9. At this time, the duration T of the power supply control signal from the one-short pulse generator 6 is changed by operation of switches SW1 to SW5. The duration T is determined by the time constant determination circuit consisting of resistors R4, R5, R6, R7 and a capacitor C5. When the clock signal from the clock signal generator discontinues, the power supply control signal from the output terminal Q of the one-short pulse generator 6 is not immediately transferred to a low level but is maintained at a high level for the duration T as shown in FIG. 3B. Then, the power supply control signal is transferred to a low level. When the clock signal is supplied to the one-short pulse generator 6, the power supply control signal from the output terminal Q in the one-short pulse generator 6 is supplied to a light emitting diode Dl through resistors R9 and RIO, and the light emitting diode Dl is then turned on. When a diode D2 in the photo TRIAC driver PT is turned on by the power supply control signal, a TRIAC Ql in the photo TRIAC driver PT is also turned on. When the power from the A.C voltage source 7 that is connected to the second join port JP2 is supplied to the gate electrode of TRIAC Q2 through resistors R3, Rl and the TRIAC Ql, the TRIAC Q2 is turned on. Accordingly, the power from the A.C voltage source 7 is supplied to the fourth join port JP4 through the TRIAC Q2.
However, when the clock signal from the clock signal generator is stopped for a desired amount of time, the photo TRIAC driver PT and the TRIAC Q2 are turned off and consequently the power supplied from the A.C voltage source 7 to the fourth join port JP2 is cut off.
The following description further illustrates that FIG. 2: capacitors C2 and C3 are used to satisfy the operation condition of the one-short pulse generator 6; a resistor R12 is used to pull up the potential of the connection node A; and a capacitor Cl along with varistors RV1 and RV2 are used to protect a surge, respectively. Also, a manual switch SW6 is used to manually supply the power from the A.C voltage source 7 to the fourth join port JP4.
As mentioned above, the monitor does not consume any power while the keyboard is not used, because the power supplied to the monitor is controlled automatically.
Although this invention has been described in its preferred embodiment with a certain degree of particularity, one skilled in the art would know that the preferred embodiment disclosed is only an example and that the construction, combination and arrangement of parts may be changed variously without departing from the spirit and scope of the invention.

Claims

CLAIMSWhat is claimed is:
1. An apparatus for controlling power supply to a computer monitor comprises: a first, second, third, and fourth join port for connecting a computer body, a A.C voltage source, a keyboard and a monitor, respectively; a pulse generator for generating a power supply control signal in response to a clock signal from said keyboard, said pulse generator being connected to a connection node A between said first join port and said third join port; a time control circuit for controlling the duration of the power supply control signal from said pulse generator; said time control circuit being connected between a connection node B in said pulse generator and a
Vcc terminal; and, a power control circuit for switching the power which is supplied from said A.C voltage source to said monitor in response to the power supply control signal from said pulse generator, said power control circuit being connected between said second join port and said fourth join port.
2. The apparatus of claim 1, wherein said power control circuit comprises: a photo TRIAC driver PT which is connected to said pulse generator through a resistor R9, said photo TRIAC driver PT having a diode Dl and a TRIAC Ql; resistors Rl and R3 for current limitation which are connected between said photo TRIAC driver PT and said second join port; and, a TRIAC Q2 for switching the power which is supplied from said A.C voltage source to said monitor, said TRIAC
Q2 being connected between said second join port and said fourth join port JP4.
3. The apparatus of claim 1, further including manual switch which is connected between said second join port and said fourth join port.
PCT/KR1993/000068 1992-09-01 1993-08-03 An apparatus for controlling power supply to a computer monitor WO1994006072A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6507059A JPH08502843A (en) 1992-09-01 1993-08-03 Computer monitor power controller

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR92016570U KR940007161Y1 (en) 1992-09-01 1992-09-01 Power control apparatus of pc monitor
KR1992-16570U 1992-09-01

Publications (1)

Publication Number Publication Date
WO1994006072A1 true WO1994006072A1 (en) 1994-03-17

Family

ID=19339385

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR1993/000068 WO1994006072A1 (en) 1992-09-01 1993-08-03 An apparatus for controlling power supply to a computer monitor

Country Status (4)

Country Link
JP (1) JPH08502843A (en)
KR (1) KR940007161Y1 (en)
CN (1) CN1084294A (en)
WO (1) WO1994006072A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709764A3 (en) * 1994-10-31 1996-07-10 Nec Corp Power supply system capable of reducing power consumption during interruption of an external input signal given to an operating circuit
ES2107963A1 (en) * 1994-08-19 1997-12-01 Hyundai Electronics Ind High energy-saving circuit for a display apparatus
US5821924A (en) * 1992-09-04 1998-10-13 Elonex I.P. Holdings, Ltd. Computer peripherals low-power-consumption standby system
GB2327819A (en) * 1997-07-31 1999-02-03 Neutral Ltd Power controller for a computer peripheral
US6407734B1 (en) 1994-10-31 2002-06-18 Nec-Mitsubishi Electric Visual Systems Corporation Power supply system capable of reducing power consumption during interruption of an external input signal given to an operating circuit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1087082C (en) * 1996-04-26 2002-07-03 联华电子股份有限公司 Apparatus for providing electricity-saving mode for central processing unit
ES2373851T3 (en) 2009-09-23 2012-02-09 St-Ericsson Sa STARTING MECHANISM OF POWER SUPPLY, APPLIANCE, AND METHOD TO CONTROL THE ACTIVATION OF POWER SUPPLY CIRCUITS.
CN102221869A (en) * 2010-04-15 2011-10-19 旭达电脑（昆山）有限公司 Energy-saving type computer power

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0381021A2 (en) * 1989-01-31 1990-08-08 Kabushiki Kaisha Toshiba Power saving system
US5083266A (en) * 1986-12-26 1992-01-21 Kabushiki Kaisha Toshiba Microcomputer which enters sleep mode for a predetermined period of time on response to an activity of an input/output device
EP0484745A2 (en) * 1990-11-07 1992-05-13 Kabushiki Kaisha Toshiba Apparatus for controlling power supply in computer system
EP0499564A2 (en) * 1991-02-13 1992-08-19 International Business Machines Corporation Method and apparatus for automatic power removal in a data processing system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5083266A (en) * 1986-12-26 1992-01-21 Kabushiki Kaisha Toshiba Microcomputer which enters sleep mode for a predetermined period of time on response to an activity of an input/output device
EP0381021A2 (en) * 1989-01-31 1990-08-08 Kabushiki Kaisha Toshiba Power saving system
EP0484745A2 (en) * 1990-11-07 1992-05-13 Kabushiki Kaisha Toshiba Apparatus for controlling power supply in computer system
EP0499564A2 (en) * 1991-02-13 1992-08-19 International Business Machines Corporation Method and apparatus for automatic power removal in a data processing system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5821924A (en) * 1992-09-04 1998-10-13 Elonex I.P. Holdings, Ltd. Computer peripherals low-power-consumption standby system
ES2107963A1 (en) * 1994-08-19 1997-12-01 Hyundai Electronics Ind High energy-saving circuit for a display apparatus
EP0709764A3 (en) * 1994-10-31 1996-07-10 Nec Corp Power supply system capable of reducing power consumption during interruption of an external input signal given to an operating circuit
AU699305B2 (en) * 1994-10-31 1998-12-03 NEC-Mitsubishi Electric Visual Systems Power supply system capable of reducing power consumption during interruption of an external input signal given to an operating circuit
US5936620A (en) * 1994-10-31 1999-08-10 Nec Corporation Power supply system capable of reducing power consumption during interruption of an external input signal given to an operating circuit
US6407734B1 (en) 1994-10-31 2002-06-18 Nec-Mitsubishi Electric Visual Systems Corporation Power supply system capable of reducing power consumption during interruption of an external input signal given to an operating circuit
GB2327819A (en) * 1997-07-31 1999-02-03 Neutral Ltd Power controller for a computer peripheral

Also Published As

Publication number Publication date
KR940007161Y1 (en) 1994-10-14
CN1084294A (en) 1994-03-23
KR940008387U (en) 1994-04-18
JPH08502843A (en) 1996-03-26

Similar Documents

Publication Publication Date Title
US5486726A (en) Power-supply control system of peripheral equipment of computer
RU2067354C1 (en) Sensor switch
KR960011625A (en) Computer Power Supply Control
WO1994006072A1 (en) An apparatus for controlling power supply to a computer monitor
EP0707255A1 (en) Cascaded multiplying current mirror driver for led's
US5579252A (en) Computer monitor power-saving device
US4471289A (en) Switching power supply circuit
US3648076A (en) Capacitance-responsive control system
KR100473216B1 (en) A reset system for ensuring proper reset when used with decaying power supplies
JPH08129437A (en) Power control circuit and power supply system
CN109493822B (en) Power-on control circuit of display
CN109995358B (en) State holding and clearing circuit and working circuit
CN214674448U (en) Low standby power consumption power supply circuit and electronic equipment
US5942813A (en) Power switching circuits
JPH11133069A (en) Voltage monitoring circuit
US4222100A (en) Power transition circuit
KR200175872Y1 (en) Reset circuit for used in a micom
US5793237A (en) Current one-shot circuit with linear response to an input signal transition
KR200147537Y1 (en) Reset switch dual power source switch apparatus
KR940004174Y1 (en) Control circuit of power supply for lcd of pc
US6061226A (en) Relay circuit with cyclical controlled capacitor
KR100257392B1 (en) Hold function type piezoelectric elevator switch.
SU1584092A1 (en) Sawtooth voltage generator
JP2601724Y2 (en) Starting circuit
KR20000038211A (en) Power on reset signal generating apparatus and method

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref country code: US

Ref document number: 1995 392888

Date of ref document: 19950419

Kind code of ref document: A

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase