Lenovo (singapore) Pte. Ltd.

International Business Machines Corporation

Tomoki Maruichi

Hideto Horikoshi

Tsuyoshi Miyamura

Jun Tanaka

Seiichi Kawano

Michael Terrell Vanover

Mitsuhiro Yamazaki

Joseph Michael Pennisi

Philip Lee Childs

Akinori Uchino

Takashi Sugawara

Naoki Abe

Noritoshi Yoshiyama

Masaki Oie

Keiji Suzuki

Atsunobu Nakamura

Adam Miles Smith

Hiroki Oda

Yuhko Ohmori

Yasunori Maezawa

Takashi Oshiyama

Masahiko Shinomura

Kohji Kawahara

Lisa Louise Carter

Terry A Buschbach

Atsuo Sugiura

Kohsuke Ohtani

An information processing apparatus and an information processing method capable of fulfilling an image processing function expected in a selected power control mode are provided. The information processing apparatus includes a first processor, a second processor, and a power control unit that determines one power control mode from among a plurality of stages of power control modes different in rated power, and controls power consumption of the first processor and the second processor in the determined power control mode, wherein the power control unit stops an operation of the second processor in response to the determined power control mode being a low power control mode which is a power control mode with the rated power lower than predetermined rated power.

Information processing apparatus and control method

The invention broadly contemplates locking methods and arrangements for electronic devices, including laptop personal computing (PC) devices. The invention provides methods and arrangements for authorizing remote devices, such as cellular phones, to control the locking of electronic devices, such as laptop PCs. After receipt of a lock message from an authorized device at a guaranteed buffer, the laptop PC becomes locked such that only an authorized user may enable the functionality of the device.

Remote locking arrangements for electronic devices

A computer and a method for enabling remote communication to a computer operating in a power-saving mode in which one or more one power sources to internal devices are disabled. The computer is equipped with a power management control circuit which is responsive to a first signal indicating that a device used to receive remote communication is to receive power while operating in a power-saving mode. In the event that a remote communications is detected which is targeted for the computer, a second signal is asserted by the remote communications device. The power management control circuit responds by exiting the power-saving mode and restoring power to the disabled power source to enable the computer to process the incoming communication. The remote communication may be through a wireless source such as a radio frequency channel or through a fixed wire such as a telephone network or LAN. Other aspects of the invention enable communication through an option card installed in a option slot or a notebooks docking station such as a radio device, modem, or LAN adapter.

Method and computer for remote communication while operating in a power-saving mode

Disclosed is a program product for directing the information processing apparatus to control an execution mode of a central processing unit(CPU) provided, the CPU having a plurality of execution modes, whose types and power consumptions of executable processing are different from one another, the program product comprising: an apparatus readable medium; recovery time acquisition means for acquiring a recovery time which is a time required for the CPU to recover from a low power mode to a high power mode of which power consumption is higher than that of the low power mode; allowed time acquisition means for acquiring the longest allowed time from a request for processing unprocessable in the low power mode and processable in the high power mode to a start of the processing after the CPU recovers to the high power mode, the request being made by an input/output device; and execution mode setting means for settingthe CPU in a state of being shiftable to the low power mode if it is determined that the CPU is able to shift to the low power mode based on the allowed time and the recovery time.

Program, recording medium, method, and information processing apparatus for controlling an execution mode of a CPU

To provide a method whereby unauthorized data access by an RFID data processing system is prohibited without any degradation of performance being incurred. An RFID data processing system comprises a CPU , a EEPROM , communication devices and , and power controllers and . When an RFID data processing system in the power-ON state that does not have access authorization passes through a portal gate located at the entrance to an unauthorized data access protection area, the portal gate transmits a signal to set ON a tamper bit in the EEPROM . When the tamper bit has been set ON, a tamper bit interrupt request signal is output by the EEPROM . Upon receiving this signal, the power controllers and power off the RFID data processing system

Method for prohibiting unauthorized access in a non-contacting data carrier system

A method to reduce the power dissipation of a system by omitting an unnecessary CPU throttling operation in a power management apparatus that performs the CPU throttling operation. A power management apparatus is constituted by an event detecting section to detect an event in a system, an activity detecting section to decide whether the system is in a busy state or in an idle state by checking whether or not there is activity in the system, and a clock control section to execute CPU-clock control. The control section does not perform an unnecessary CPU throttling operation, by stopping the CPU throttling operation when the system is in the idle state and performing the CPU throttling operation only when the system is in the busy state. With this, the power dissipation of the system can be considerably reduced.

Computer power management apparatus and method for optimizing CPU throttling

A information processing system which enters power management mode when a predetermined time has elapsed since a last user input (or a last processing operation), adjusts the predetermined time according to the action of the operator in response to entering the power mode. If the user transfers back to normal mode quickly the predetermined reference time is increased. If the user responds only after a delay period the predetermined reference time is decreased. By so adjusting the predetermined time a better balance is achieved between energy saving and user convenience for a current level of operator attention to the computer.

Power management apparatus and method for an information processing

Growing community of inventors

Yamato, Japan

Tomoki Maruichi