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| Number | Title | Issue Date |
| 5778237 | Data processor and single-chip microcomputer with changing clock frequency and operating voltage A microcomputer has a clock generator capable of changing the frequency of an output clock signal: and a power circuit capable of changing the level of an operating voltage to be outputted. The frequencies of clock signals and the levels of operating volt... | 07/07/1998 |
| 5778443 | Method and apparatus for conserving power and system resources in a computer system employing a virtual memory A computer system has volatile random access memory ("RAM") and nonvolatile auxiliary storage, a virtual memory operating system with some pages of virtual memory resident in RAM and other pages resident in a paging space in auxiliary storage. A time vary... | 07/07/1998 |
| 5774735 | System resource enable method with wake-up feature A system resource enable apparatus for enabling operations on a system resource including a register representing current and future operations on the resource, a pattern generator that applies a pattern corresponding to a requested resource operation to ... | 06/30/1998 |
| 5765002 | Method and apparatus for minimizing power consumption in a microprocessor controlled storage device A flash electrically-erasable programmable read only memory (EEPROM) device including a flash EEPROM array having circuitry for controlling operations within the flash EEPROM array, a microprocessor for controlling operations external to the flash EEPROM ... | 06/09/1998 |
| 5764506 | Method and apparatus for reducing the sound level of a microcomputer The invention relates to apparatus for reducing sound nuisance and designed to be fitted easily to a microcomputer including, inter alia, a hard disk motor powered by a cable fitted with connectable male and female connectors, and a fan motor powered by a... | 06/09/1998 |
| 5761715 | Information processing device and cache memory with adjustable number of ways to reduce power consumption based on cache miss ratio In a cache memory of a set associative type, a cache-miss rate measuring circuit 140 measures the cache-miss rate during way access operation, the way number control circuit 150 determines the number of ways to be accessed based on a change of the measure... | 06/02/1998 |
| 5758172 | Apparatus and method for displaying PMS information in a portable computer An apparatus and method for displaying power management system (PMS) information in a portable computer includes a video random access memory (RAM) for storing the power management system (PMS) information as a preset data configuration. A keyboard contro... | 05/26/1998 |
| 5758173 | Detection of hand location as an input for power controls in a computing system Power is conserved in a computing system by detecting when a user's hands are not placed over a keyboard for the computing system. When it is detected that the user's hand are not placed over the keyboard power to a display for the computing system is red... | 05/26/1998 |
| 5757365 | Power down mode for computer system A computer system includes a CPU and VGA/LCD controller interacting with a main system memory for processing input data and displaying it on an LCD panel screen that includes a plurality of row and column drive chips on the panel. Each column drive chip i... | 05/26/1998 |
| 5758175 | Multi-mode power switching for computer systems A power conservation system for use in a computer system. The power conservation system has an activity monitor and a plurality of modes of operation. The power conservation system has a power switching unit which couples the power supply to a selected gr... | 05/26/1998 |
| 5758174 | Computer system having a plurality of stored system capability states from which to resume A computer system having suspend and resume capabilities using a plurality of suspend files to save multiple system states. Provision is made for use of multiple operating systems requiring multiple swap files. Also, a cross-session data file monitor prev... | 05/26/1998 |
| 5754798 | Computer system with function for controlling system configuration and power supply status data Since an instruction of switching of the system operation environment or configuration such as the power save mode and power-up mode is input by the hot key operation using SMI, key data of the hot key can be instantly received by the CPU even while any t... | 05/19/1998 |
| 5754870 | Power management of a computer plug-in card having a remote data link A computer system includes a computer and a plug-in card having a remote data link. The plug-in card draws power from the power sour the computer. A status monitor shows the operability of the remote data link, specifically whether it is operable for data... | 05/19/1998 |
| 5748971 | Option card hibernation system A hibernation system of a computer employing option cards responds to a hibernation interrupt signal generated by a power management system in case of power failure or a period of non-use. In response, an operation controller backs up the present data and... | 05/05/1998 |
| 5745773 | Memory cards with SRAM usable for a PC card in conformity with PCMCIA standard The memory card with an ECC circuit for adding ECCS to main data to be stored comprises a memory consisting of SRAM, a detection circuit for detecting the frequency of data access operation to the memory and a power supply voltage converter for... | 04/28/1998 |
| 5745774 | Integrated circuit having software controllable internal clock generator and switch connecting batteries in series or parallel for power conservation An integrated circuit of this invention includes a processor, a first circuit for generating a clock signal, and a second circuit for selecting a suitable line voltage. The first circuit generates at least two kinds of clock signals. When one kind of cloc... | 04/28/1998 |
| 5742833 | Programmable power management system and method for network computer stations A frame-address matching function of a network controller is enhanced. In a full power-on mode, the controller performs conventional functions. In the low-power mode, the controller includes frame-address and frame-data matching, as well as pre-determined... | 04/21/1998 |
| 5740087 | Apparatus and method for regulating power consumption in a digital system An apparatus and method are disclosed for regulating power consumption in a digital system of the kind including at least one triggerable functional block that consumes more power when triggered than when not triggered. In an embodiment for use with a dig... | 04/14/1998 |
| 5740454 | Circuit for setting computer system bus signals to predetermined states in low power mode A power management circuit for managing low power modes in a computer system, which implements four power modes, from highest power consumption to lowest power consumption: RUN mode, SLEEP mode, IDLE mode, and STAND BY mode. The computer system includes a... | 04/14/1998 |
| 5732255 | Signal processing system with ROM storing instructions encoded for reducing power consumpton during reads and method for encoding such instructions A digital signal processing system for executing instructions and processing data, including a program memory which stores encoded instructions, where the program memory consumes less power when a bit having a first logical level is read therefrom than wh... | 03/24/1998 |
| 5721934 | Retrofit external power saving system and method for use An intelligent power strip circuit for providing automatic computer system power down features and for providing automatic restoration of power for the computer system. The intelligent power strip circuit may be used by conventional computer systems that ... | 02/24/1998 |
| 5708819 | Process and apparatus for generating power management events in a computer system A process and apparatus for reducing power consumption in processor-based system by interrupting the main system power supply during periods of inactivity. Existing input/output circuitry is powered from a constant auxiliary power source to monitor system... | 01/13/1998 |
| 5708821 | Printing apparatus and method of saving power of the same A printing apparatus comprises a main control circuit 1, an image forming section 10, an interface 8 for communicating with an external host system 9, and an operation panel 20 including operating switches. The apparatus further comprises power cutoff cir... | 01/13/1998 |
| 5696978 | Personal computer for performing power save operation of an external CRT by determining a DPMS-compliant CRT A CMOS memory stores DPMS-Enable/Disable data set by the user. When a display power save request has been issued from an operating system or an application program, the VBE/PM of a VGA BIOS determines, with reference to the DPMS-Enable/Disable data, wheth... | 12/09/1997 |
| 5687382 | High speed, reduced power memory system implemented according to access frequency A memory system including a first memory area (MEM-A) implemented using memory units including low threshold voltage transistors powered by a low supply voltage source, and a second memory area (MEM-B) implemented using memory units including higher thres... | 11/11/1997 |
| 5671099 | Magnetic recording apparatus with power conservation feature The magnetic recording apparatus according to the present invention comprises a recording medium in which servo information items are provided on tracks at a predetermined interval, a head for scanning the tracks of the recording medium, a read/write circ... | 09/23/1997 |
| 5666539 | Reducing I/O activity to allow a host based printing system to activate power management functions Reducing I/O port activity allows a period of inactivity to trigger the power save mode in computers. The user declares the period of inactivity. The printing system retrieves the period and relaxes the port activity by gradually lengthening the period be... | 09/09/1997 |
| 5666538 | Disk power manager for network servers A computer network includes a network server in communication with a plurality of user terminals. The network server includes disk drives which store data accessible via the user terminals. To increase power efficiency of the network server, the number of... | 09/09/1997 |
| 5664201 | Drive control system for microprocessor according to operational state and ambient temperature condition thereof A drive control system for a microprocessor comprises a switching circuit 5 for varying a drive condition of the microprocessor by varying a processing speed and a power consumption in mutually related manner, an operational state dependent control portio... | 09/02/1997 |
| 5659763 | Apparatus and method for reducing power consumption by peripheral devices by controlling the interconnection of power supplies Peripherals connected to an external bus is connected to a power source section through switching units, and a buffer circuit connected to an internal bus and the external bus is consisted of a separating unit. An internal memory and power consumption red... | 08/19/1997 |
| 5652950 | Power saving method in image forming apparatus using electrophotographic developing method A power saving method of an image forming apparatus using an electrophotographic developing unit includes the steps of: beginning a counting operation upon occurrence of an error state in the image forming apparatus, when the image forming apparatus is in... | 07/29/1997 |
| 5649210 | Communication interface circuit having network connection detection capability A method and apparatus for interfacing a computer system with another system is described including an interface circuit. The interface circuit detects if the voltage level on a signal line represents a valid logic level and if so, provides a valid signal... | 07/15/1997 |
| 5644773 | Sense amplifier timing method and apparatus for peak power reduction An apparatus and method for enabling multiple sense amps in a burst read memory is described. The sense amps are divided into two sets which are then enabled at slightly different times. The time difference is set so that a maximum power consumption exper... | 07/01/1997 |
| 5631852 | Smart cooling security system The present invention provides a cooling security system that combines a hardware apparatus with a software routine. The cooling security system detects problems associated with the operation of the fan which is the main component for cooling or heat diss... | 05/20/1997 |
| 5623432 | Microsystem with low energy consumption This microsystem enables a phenomenon, whose evolution over time is random, to be analyzed. It comprises means for reducing its consumption of energy which acts via a modification of the operating features of the microsystem, the effect of this modificati... | 04/22/1997 |
| 5621401 | Circuit for sensing input conditioning of keyboard A circuit for sensing keyboard input conditions, which includes a slot coupled to regulated signal lines, a supplementary circuit which generates a "Low" active signal in accordance with keyboard input activity after taking input signals from the slot, an... | 04/15/1997 |
| 5617343 | Portable work station and data collection terminal including switchable multi purpose touch screen display A portable data collection terminal has an elongate housing with a hand grip conforming rear surface. A front surface features a numerical keyboard adjacent a lower end of the housing and an LCD screen adjacent the keyboard toward an upper end of the hous... | 04/01/1997 |
| 5590341 | Method and apparatus for reducing power consumption in a computer system using ready delay A computer system that contains devices and peripherals that have power management capabilities incorporated therein that are responsible for placing the computer system in a reduced power consumption state. A controller monitors bus cycles from a process... | 12/31/1996 |
| 5586333 | Method and control apparatus for generating power management signal of computer peripheral equipment in a computer system There is disclosed a power management signal generated from a computer for saving power of computer peripheral equipment by alternatively controlling a power supply or an operating state of the computer peripheral equipment, corresponding to a use state o... | 12/17/1996 |
| 5579493 | System with loop buffer and repeat control circuit having stack for storing control information A low-power data processor in which memory access for reading out an instruction module to be repeatedly executed is controlled to decrease the power consumption of the data processor. The data processor comprises an instruction buffer formed of, for exam... | 11/26/1996 |
