Kabushiki Kaisha Toshiba

Toshimitsu Saito

Nobuyuki Nanno

Mayumi Oka

James Mason

Atsuhiro Ootake

Hirofumi Nishikawa

Masao Suga

Masahiko Kasashima

Shigeru Satake

Toshikazu Konno

Tadaaki Inomata

Hidekazu Mihara

Syuzo Nakajima

Atsuhiro Outake

Yoshiaki Iba

Junko Konno

Yoshiaki Suzuki

Makoto Ando

Yuji Yamanaka

Kazuo Akashi

Toshikazu Morisawa

Koichi Dewa

Tadashi Tsuji

K Ouichirou Takeguchi

According to one embodiment, a system program determines whether a boot mode of an information processing device is set to a first mode for booting an operating system from a storage device initialized by a master boot record (MBR) or a second mode for booting an operating system from a storage device initialized by a GUID partition table (GPT). The system program enables a first or second trusted platform module based on a result of determination of the boot mode.

Information processing device and version switching method of trusted platform module

According to one embodiment, non-volatile storage device stores a program for causing a processor to execute processing of determining whether registered authentication information exists in the information processing apparatus, authentication processing determining whether input authentication information matches the registered authentication information, and processing of booting an operating system. The operating speed control module decreases an operating speed of the processor in response to the determination that the registered authentication information exists in the apparatus, and increases the operating speed of the processor in response to the confirmation of the match between the input authentication information and the registered authentication information.

Operating speed control of a processor at the time of authentication before an operating system is started

If a boot device is a CD-ROM drive, whether a CD-ROM medium is loaded in the CD-ROM drive is checked. When no medium is loaded, a tray open command is issued to the CD-ROM drive to automatically open the tray before starting a boot process from another device such as an HDD. When the user sets the CD-ROM medium on the tray and closes the tray, the bootstrap of an operating system from the CD-ROM medium is executed.

Computer system capable of using removable disk drive as boot device and

In a computer system to which externally- and internally-set hard disk drives can be coupled, a drive number is set to the externally-set hard disk drive and/or internally-set hard disk drive in accordance with a coupling state of the externally- and internally-set hard disk drives and a swithing state of a dip switch of the externally-set hard disk drive. When the externally-set hard disk drive and/or internally-set hard disk drive are/is coupled to the computer system, pop-up menu data for the externally-set hard disk drive and/or internally-set hard disk drive is added to the normal pop-up menu data. A pop-up menu is therefore displayed using the normal pop-up menu data including the pop-up menu data for the externally-set hard disk drive and/or internally-set hard disk drive.

Method and apparatus for assigning drive numbers to hard disk drives

When a computer is not externally powered, it operates from installed first and second batteries. In top surface of the computer, LEDs are provided which indicates three states of each battery; need of charging, during charging, and completion of charging.

Portable computer powered by rechargeable batteries

After a computer system is normally bootloaded, a resuming mode is set. When a power switch is off, a power source provides a power switch off signal. When the power switch off signal is detected and when the resuming mode flag is set, system data is stored in a file. When a predetermined time period elapses after the power switch is off or when a signal representing that the system data has been stored in the file is generated, the power source is turned off. When the power source is turned on, on the other hand, a memory is initialized. When the system data is stored in the file and when the resuming mode flag is set, the system data is read out from the file and restored in the memory. By such operations data processing can be resumed from the system state immediately prior to the turn-off of the power switch.

Method and system for resuming data processing in computer

Upon detecting removal of a display section from a computer unit's main body, dismounting a battery, removal of a memory board from the computer unit's main body or the like, the CPU saves system data no matter whether or not the resume mode is on and turns off the main power supply. Subsequently when the power switch is turned on the CPU checking if said system data is saved. The CPU restores said system data and restarts the data processing in case where the preservation of said system data is detected.

Computer unit with a resume function

A portable computer that includes a first ROM for storing an OS, a second ROM for storing at least one piece of existing application software, and a flat display panel for displaying at least one icon to read out the existing application software stored in the second ROM. Since the DOS and the application program are respectively stored in a DOS ROM and an application ROM, the DOS or the application can be quickly executed without install processing from floppy disks.

Portable computer with a bank switch for switching between a ROM and a

When the MS-DOS is not installed from an FDD or an HDD but is installed from a built-in DOS ROM arranged in a memory space in which bank access to the computer main body can be performed, at the time the system power is turned on, a menu display processing program stored in the DOS ROM is executed by the DOS. Upon execution of the program, the arrangement of menu icons can be arbitrarily changed on the menu screen.

Portable computer which has a task selection menu allowing easy

A computer has a conversion module for converting a password to be registered into a compressed-bit row in accordance with a predetermined rule. A registration module stores the compressed bit row of the registered password in a backup RAM. A conversion module converts a password to be compared with the registered password into a compressed bit row. A comparison module compares the compressed bit row of the compared password with the compressed bit row of the registered password. Upon detecting a coincidence between the two compressed bit rows, a system activation module is activated to set the system to a access allowable state.

Computer with password processing function and password processing

Method and system for controlling resuming operation of an AC-driven

In a computer to which an external ten-key pad is connectable, whether or not the external ten-key pad is connected to the computer is detected. When the external ten-key pad is not connected, the overlay keys in the keyboard body function as letter keys or numeric keys depending on whether the computer is set in an NL state. When the external ten-key pad is connected, the overlay keys function as letter keys only.

Keyboard control system and method for a computer to which a ten-key pad

A battery operable personal computer comprises a display, a keyboard, a CPU, and a power supply circuit. The display panel displays various types of data at a luminance level according to a value of a luminance control signal. The keyboard serves to enter data instructing alteration of the luminance level of the display unit. The CPU instructs the luminance level of the display unit in accordance with data entered through the keyboard, The power supply circuit controls the value of the luminance control signal to be supplied to the display unit in such a way that the luminance level of the display becomes one specified by the CPU.

Personal computer capable of altering display luminance through key

A personal computer, wherein a setup processing is performed to select a display mode, either a normal-display mode or a reverse-display mode, and also to select one of the external devices such as a printer and an external floppy disk drive. Also, a display auto-off mode and a display auto-off period are set during the setup processing. A period is measured during which no data is input from a keyboard. When the measured time value exceeds the display auto-off period, the supplement of power to the back light is stopped automatically.

Growing community of inventors

Tokyo, Japan

Toshimitsu Saito