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6397340 |
Real-time power conservation for electronic device having a processor
A real-time power conservation apparatus and method for portable computers employs a monitor to determine whether a CPU may rest based upon a real-time sampling of the CPU activity level and to...
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6397338 |
Power management circuit that qualifies powergood disposal signal
A power recycle circuit is for use in a power management system. An input of the power recycle circuit is for receiving a clock signal. A detection circuit is for sensing a minimum disable pulse...
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6393572 |
Sleepmode activation in a slave device
In a master-slave configuration wherein a sleepmode activation is effected by the cessation of a clocking signal, the need for an analog device or auxiliary clock for detecting the cessation of the...
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6385732 |
Apparatus for and method of inhibiting and overriding an electrical control device
An apparatus for and method of inhibiting and overriding the normal operating mode of an input device connected to a communications network function within an electrical network made up of input...
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6381705 |
Method and device for reducing current consumption of a microcontroller
A method and device reduces consumption of a microcontroller, allowing the microcontroller to enter into an “active halt” mode in which the central processing unit, the internal peripheral...
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6378076 |
Substantially undetectable data processing
A method and system for substantially undetectable data processing. The method and system provide data processing systems with an ability to detect a specific event, and enter a background activity...
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6370651 |
Synchronizing user commands to a microcontroller in a memory device
A method and apparatus for synchronizing a micro controller in a flash memory device. An interface circuit receives a user command over a host bus. A synchronizer circuit enables an oscillator...
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6366522 |
Method and apparatus for controlling power consumption of an integrated circuit
A method and apparatus for controlling power consumption of an integrated circuit include processing that begins by producing a system clock from a reference clock based on a system clock control...
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6367021 |
Power management system with programable configuration circuitry using digital power level signal to selectively configure operations of electronic circuits
An electronic system is provided that includes a plurality of power consuming electronic circuits and a power management system that interfaces a power supply to the plurality of power consuming...
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6357012 |
Microcontroller with auto-alarm device
A microcontroller with a self-prompting (self-wake-up) device, particularly for use in electrical adjusting drives, having a control device for specifying an active and an inactive operating state...
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6347378 |
Techniques and circuits for high yield improvements in programmable devices using redundant logic
A programmable logic device having redundant sets of logic blocks which are capable of being enabled or disabled. The programmable logic device includes a plurality of sets of logic blocks, a...
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6347379 |
Reducing power consumption of an electronic device
Leakage power consumption may be reduced in computers and other devices by providing a state where clocks are off and a low supply voltage is provided to the processor. This voltage may be...
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6345362 |
Managing Vt for reduced power using a status table
An integrated circuit includes a CPU, a power management unit and plural functional units each dedicated to executing different functions. The power management unit controls the threshold voltage...
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6345336 |
Instruction cache memory includes a clock gate circuit for selectively supplying a clock signal to tag RAM to reduce power consumption
An instruction cache memory ( 12 ) includes a clock gate circuit ( 26 ) for controlling the supply of a clock signal (CLK) to tag RAM ( 22 ). The clock gate circuit ( 22 ) supplies the clock signal...
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6345354 |
Register file access
A method, apparatus, and manufacture to facilitate power-efficient register file access for preparing a register file to be accessed. Efficient operation of a processor is facilitated while still...
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6332173 |
UART automatic parity support for frames with address bits
An asynchronous serial port provides automatic parity generation and detection in frames supporting address bits. In data frames comprising a variable number of data bits, the parity bit is located...
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6330681 |
Method and apparatus for controlling power level during BIST
An improvement in a method of testing a digital circuit or system, having a plurality of scannable memory elements, in accordance with conventional BIST methods in which, at a reference clock, a...
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6330679 |
Input buffer circuit with dual power down functions
An input buffer circuit includes an input buffer. The input buffer has an input adapted to be coupled to an address bus and a power down input. The input buffer circuit further includes power down...
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6327661 |
Using unpredictable information to minimize leakage from smartcards and other cryptosystems
Methods and apparatuses are disclosed for securing cryptosystems against external monitoring attacks by reducing the amount (and signal to noise ratio) of useful information leaked during...
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6327664 |
Power management on a memory card having a signal processing element
An improved memory module and its use in a computer system is provided. The module includes a DSP first and second individually addressable banks of memory chips. The first bank is configured to...
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6324653 |
Second operation in internal peripheral circuit (IPC) performing in parallel with microprocessor-controlled operation and determining internal clock pulse elimination window to match IPC operating time
An integrated circuit includes a microprocessor driven by an internal clock signal and at least one internal peripheral circuit activated selectively by the microprocessor to perform an operation,...
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6317841 |
Computer system using stop clock function of CPU to enter low power state
The CPU speed is apparently decreased, and current consumption is reduced by asserting a stop clock (STPCLK#) signal at a predetermined interval. When a system event (INTR, NMI, SMI, SRESET, and...
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6314440 |
Pseudo random number generator
A radio frequency identification device comprises an integrated circuit including a receiver, a transmitter, and a microprocessor. The receiver and transmitter together define an active...
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6314522 |
Multi-voltage level CPU module
A computer module includes a central processing unit capable of operating at a first performance level and capable of operating at a second performance level in response to configuration signals,...
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6314523 |
Apparatus for distributing power to a system of independently powered devices
According to the present invention, an apparatus having a plurality of independently operable and powerable devices is disclosed. The apparatus includes a plurality of power rails, a plurality of...
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6311281 |
Apparatus and method for changing processor clock ratio settings
A processor has an external pin that can be asserted to lock in new clock ratio information dynamically. A state machine of the processor defines a stop grant state that is utilized to halt the...
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6311287 |
Variable frequency clock control for microprocessor-based computer systems
A computer system including a microprocessor and a circuit to provide a clock signal for the microprocessor is described. The circuit is responsive to a control signal for selecting a minimum clock...
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6304979 |
Logic to enable/disable a clock generator in a secure way
A clock generator supplying clock signals to a synchronous system is disabled in response to a first synchronous signal from the synchronous system and enabled in response to an asynchronous...
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6304926 |
System for generating a selected clock frequency for a processing unit of an interface based upon the current capacity of an apparatus connected thereto
An interface device is connected to an OA (office automation) apparatus, such as a printer, a copier, a facsimile apparatus, a scanner or the like, and provides the OA apparatus with a new...
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6304978 |
Method and apparatus for control of the rate of change of current consumption of an electronic component
A method and apparatus which may be used for control of the rate of change of current consumption of an electronic component. The apparatus includes a processing circuit having coupled to receive a...
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6301671 |
Apparatus and method for power reduction control in a video encoder device
System for reducing power consumption in MPEG-2 compliant video encoder circuitry employs logic for controlling first clock signals input to functional I, HSU and RSU blocks and functional...
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6298448 |
Apparatus and method for automatic CPU speed control based on application-specific criteria
A CPU speed control system for use in devices having microprocessors or microcontrollers which may also be operated using battery power. The system includes a programmable frequency synthesizer for...
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6292062 |
Method and apparatus for implementing a high-precision interval timer utilizing multiple oscillators including a non-optimal oscillator
The present invention is a novel method and apparatus for implementing a high-precision timer utilizing a non-optimal oscillator and a high-speed oscillator wherein only one oscillator is enabled...
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6282661 |
Apparatus and method for adaptive reduction of power consumption in integrated circuits
Power consumption in program implemented circuits and the like is dynamically controlled in accordance with the circuit performance over time, not by reducing switched capacitance as was done in...
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6282664 |
Method and apparatus for switching an electronic system between an operating mode and stand-by mode
The invention relates to an electronic system, in particular a mobile data capture and data output device in which the electronic system has a processor (1) and at least one i/o unit (8) with a...
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6282660 |
Extending dial up networking paradigm to cover network connections
A computer's representation and handling of dial-up and network applications are standardized. A LAN connection is established on a session basis only when required, enabling a user or system...
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6282663 |
Method and apparatus for performing power management by suppressing the speculative execution of instructions within a pipelined microprocessor
A method for reducing power consumption within a processor, having branch prediction circuitry, requires detecting the occurrence of a trigger event and then suppressing speculative execution of an...
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6279115 |
Circuit arrangement for monitoring of an electric tripping device for low-voltage switches
A circuit arrangement is described for monitoring an electronic tripping device for low-voltage switches having a microprocessor device which, in conjunction with a digital-analog converter,...
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6275945 |
Apparatus for radiating heat for use in computer system
In a computer system using an expanded unit for obtaining an expanded function, a heat sink of a computer main body and a heat sink of the expanded unit are connected to each other when the...
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6275949 |
Power controller for a peripheral device that stores the on/off state thereof when power is removed from the device
After an activation of the CPU in a peripheral device in a computer system, a determination is made whether an external power supply input or operation of a software switch is inputted as a...
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6272642 |
Managing a system's performance state
A system includes a component, a detector adapted to detect generation of a power management event, and a controller adapted to transition the component from a first performance mode to a lower...
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6266776 |
ACPI sleep control
When the state of an internal battery or an external power supply changes, the change is detected by an embedded controller. The OS is informed of this change using a power management event signal...
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6260151 |
Computer system capable of controlling the power supplied to specific modules
In a computer system, a control signal line directly connecting a processor to a power sequence controller is provided and a PSC interface for exchanging a control signal with the power sequence...
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6256742 |
Information processing apparatus having a power saving function
An information processing apparatus such as a personal computer is capable of controlling consumption power of a digital communication line interface circuit or a modem depending on a usage state...
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6243819 |
Lid switch in portable computers and the power management system using the same
A portable computer supported by a power management system that responds to a closed state and an open state of a flat panel display. A closed position and an open position of a lid (housing the...
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6233691 |
Apparatus for reducing computer system power consumption
A battery powered computer system determines when the system is not in use by monitoring various events associated with the operation of the system. The system preferably monitors the number of...
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6233690 |
Mechanism for saving power on long latency stalls
A method for gating a clock signal to an execution unit on long latency memory stalls monitors a stall signal, a scoreboard (data) hazard signal, a resource hazard signal, and a data return signal....
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6230277 |
Peripheral device for reducing power supplied from a host device and control method thereof
A peripheral device operating with power supplied from a host device includes a receive unit receiving an external signal and a controller. The controller causes at least one of the functions of...
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6230279 |
System and method for dynamically controlling processing speed of a computer in response to user commands
When a user instructs acceleration or deceleration of the CPU processing speed with an "accelerator" button or a "brake" button, a speed control MMI informs power management system software of the...
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6226753 |
Single chip integrated circuit with external bus interface
A semiconductor integrated circuit for suppressing power consumption is provided. In the case where an internal signal should be monitored from outside the circuit, an output control circuit...
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