Abstract: In a composite optical device having a resin layer on a surface of a glass serving as a base, the resin layer has a first area corresponding to an effective diameter range and a second area disposed outside of the first area, a surface of the first area includes a concave surface of aspheric shape at least in part, and a surface of the second area is continuous with the surface of the first area, and includes an inflection point.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An electronic apparatus includes a main body, a sensor, an input unit and an authentication unit. The sensor detects a tilt of the main body. The input unit accepts entry of a password from a user. The authentication unit executes user authentication based on the tilt detected by the sensor and the password entered in the input unit. In a control method in an electronic apparatus including a main body, a sensor detecting a tilt of the main body, and an input unit accepting entry of a password from a user, the control method includes: detecting a tilt of the main body; and executing user authentication based on the detected tilt and the entered password.

Abstract: 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.

Abstract: According to one embodiment, an information processing apparatus that is connectable to a server that stores an operating system (OS) includes a data storage module, a setting storage module, a controller, and a boot module. The data storage module stores data. The setting storage module stores setting information indicating either a first mode using the data storage module or a second mode not using the data storage module. The controller retrieves the setting information from the setting storage module before an OS boots up, and, when the setting information indicates the second mode, disables access to the data storage module. The boot module loads, when access to the data storage module is disabled, the OS from the server, and boots up the OS.

Abstract: According to one embodiment, an information processing apparatus includes: a case; a device that is housed in the case; a cooling fan that cools the device; a temperature detecting device that detects a temperature of the device; and a controller that is operable in a first mode and second mode, the first mode controlling the cooling fan in a range from a stopped state to a given rotation speed in accordance with the temperature detected by the temperature detecting device, and a second mode controlling the cooling fan to rotate at a predetermined rotation speed that is lower than the given rotation speed.

Abstract: An electronic apparatus has a plurality of operating systems. The apparatus includes a setting unit which preselects a program to be displayed or recorded under control of a first operating system, and a notifying unit which makes a notification as to whether the setting unit preselects the program while an application program is being executed under control of a second operating system.

Abstract: A scanning optical system deflects a light beam by a reflection surface of a polygon mirror toward an object surface through an image forming optical system so that the light beam scans on the object surface to form an image thereon. A light shielding member is disposed between the polygon mirror and the image forming optical system. The shielding member is an opaque plate disposed perpendicular to the optical axis of the image forming optical system. The light shielding member prevents a ghost light that is reflected by another reflection surface of the polygon mirror located adjacent to the reflection surface deflecting the light beam from entering the image forming optical system and impinging onto the object surface.

Abstract: A multi-beam scanning device includes a light source for emitting a plurality of laser beams, a polygon mirror for deflecting the laser beams so that the laser beams scan across an object surface in a main scanning direction, an f? lens disposed between the polygon mirror and the object surface, and a cylindrical lens that converges each laser beam in a vicinity of the polygon mirror in the auxiliary direction. A mirror is disposed between the light source and the cylindrical lens which deflects the laser beams in the auxiliary scanning direction. The mirror is rotatably supported by a mirror holder such that the traveling direction of the laser beams deflected by the mirror can be adjusted.

Abstract: A scanning optical system deflects a light beam by a reflection surface of a polygon mirror toward an object surface through an image forming optical system so that the light beam scans on the object surface to form an image thereon. A light shielding member is disposed between the polygon mirror and the image forming optical system. The shielding member is an opaque plate disposed perpendicular to the optical axis of the image forming optical system. The light shielding member prevents a ghost light that is reflected by another reflection surface of the polygon mirror located adjacent to the reflection surface deflecting the light beam from entering the image forming optical system and impinging onto the object surface.

Abstract: A multi-beam scanning device includes a light source for emitting a plurality of laser beams, a polygon mirror for deflecting the laser beams so that the laser beams scan across an object surface in a main scanning direction, an f&thgr; lens disposed between the polygon mirror and the object surface, and a cylindrical lens that converges each laser beam in a vicinity of the polygon mirror in the auxiliary direction. A mirror is disposed between the light source and the cylindrical lens which deflects the laser beams in the auxiliary scanning direction. The mirror is rotatably supported by a mirror holder such that the traveling direction of the laser beams deflected by the mirror can be adjusted.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.