Abstract: In an electronic apparatus for realizing a desired function by combining a plurality of units, a judging part judges whether a combination of the plurality of units is to realize the desired function and a power supply control part controls a supply of power from a power source to at least one of the units of the combination used to realize the desired function based on a judgement result of the judging part.

Abstract: A control apparatus for controlling a display device for displaying information on a screen by repeating a scan period when a signal scans the screen and a non-scan period from the end of the scan period to the start of the next scan period. The control apparatus includes a processor for processing information to be displayed on the display device, a clock generator for defining the operation speed of the processor, a switch section for switching the clock frequency of the clock generated in the clock generator, and a synchronization controller for synchronizing the clock frequency switching by the switch section with the non-scan period.

Abstract: A tuner receiving system, a control unit for controlling a tuner receiving operation, a computer readable storage medium, and a method of receiving radio waves by using a tuner, are disclosed. The tuner receiving system outputs video and audio signals by processing the signals sent out when communication is established between a tuner unit for receiving radio waves from external sources and a capture card or the like. The main part of the system or the control unit discriminates the type of the tuner included in the tuner unit, based on a control signal output from the tuner unit after the start of the communication between the tuner unit and the communication interface unit, and displays a receiving station corresponding to a channel receivable by the tuner, in accordance with the type of the tuner and information from the communication interface unit.

Abstract: A display control device controls a display device that displays a screen area wider than a screen display area. The display control device includes a non-display area in the surrounding part of the screen display area, that receives pen input, but does not display the screen; a screen edge detecting unit that detects the touching of the non-display area by the pen; a movement determining unit that determines whether to start scrolling the display screen in a specific direction or whether to stop the scrolling based on whether the pen is touched in the non-display area, the direction of movement, and the amount of movement of the pen, and a display screen shift instruction unit that instructs the display device to start or stop scrolling the display screen.

Abstract: Receiving a boot instruction of the operating system, performing management by making a first recording area recognizable to the first operating system booted based on the boot instruction in an operating status of the first operating system stored in the first recording area, and making a second recording area unrecognizable that is stored with the second operating system.

Abstract: Receiving a boot instruction of the operating system, performing management by making a first recording area recognizable to the first operating system booted based on the boot instruction in an operating status of the first operating system stored in the first recording area, and making a second recording area unrecognizable that is stored with the second operating system.

Abstract: Disclosed is a technology of executing a resume mode of an information processing system and an imaging process of a subject when given an imaging indication from an imaging device even if the information processing system, to which the imaging device such as a digital camera etc is connected, is in a suspend mode. The information processing system (1) incorporates a shift function to the suspend mode and a restore function to the normal operation mode from the suspend mode, and interlocks with an imaging device. This system comprises a control unit (2, 3) for controlling the shift function and the restore function, a signal receiving unit (4) for receiving an imaging indication signal from said imaging device, and an imaging indication signal detection unit (9, 16) for starting the restore function when receiving the imaging indication signal in the suspend mode.

Abstract: It is determined, in accordance with a signal supplied by a tuner and indicating a signal reception state of the tuner, whether or not signal reception has been performed normally. Then, power supply to the tuner is stopped when it is determined that signal reception has not been performed normally. Further, it is detected whether or not an antenna has been connected to the tuner apparatus. Then, power supply to the tuner is stopped when it is determined that the antenna has not been connected to the tuner apparatus.

Abstract: A video signal processing circuit, in which a horizontal synchronizing signal is separated from an input analog video signal by a synchronism separating circuit, whether a “H” period of the horizontal synchronizing signal continues for more than a prespecified period of time or not is checked by a synchronizing signal monitoring counter, and power supply to an A/D converter is controlled thereby according to a result the confirmation.

Abstract: A sound device includes a silent state detecting unit for detecting a silent state in a sound signal supplied by a personal computer; and a sound production preventing unit for preventing a sound from being produced from the sound signal supplied by the personal computer when the silent state is detected by the silent state detecting unit. By halting the production of a sound from the sound signal supplied from the personal computer when the silent state is detected, production of noise in a silent state is prevented so that the quality of sound in the expansion station is improved.

Abstract: A video signal processing circuit, in which a horizontal synchronizing signal is separated from an input analog video signal by a synchronism separating circuit, whether a “H” period of the horizontal synchronizing signal continues for more than a prespecified period of time or not is checked by a synchronizing signal monitoring counter, and power supply to an A/D converter is controlled thereby according to a result the confirmation.

Abstract: A video signal processing circuit, in which a horizontal synchronizing signal is separated from an input analog video signal by a synchronism separating circuit, whether a “H” period of the horizontal synchronizing signal continues for more than a prespecified period of time or not is checked by a synchronizing signal monitoring counter, and power supply to an A/D converter is controlled thereby according to a result the confirmation.

Abstract: Disclosed is a technology of executing a resume mode of an information processing system and an imaging process of a subject when given an imaging indication from an imaging device even if the information processing system, to which the imaging device such as a digital camera etc is connected, is in a suspend mode. The information processing system (1) incorporates a shift function to the suspend mode and a restore function to the normal operation mode from the suspend mode, and interlocks with an imaging device. This system comprises a control unit (2, 3) for controlling the shift function and the restore function, a signal receiving unit (4) for receiving an imaging indication signal from said imaging device, and an imaging indication signal detection unit (9, 16) for starting the restore function when receiving the imaging indication signal in the suspend mode.

Abstract: A tuner receiving system, a control unit for controlling a tuner receiving operation, a computer readable storage medium, and a method of receiving radio waves by using a tuner, are disclosed. The tuner receiving system outputs video and audio signals by processing the signals sent out when communication is established between a tuner unit for receiving radio waves from external sources and a capture card or the like. The main part of the system or the control unit discriminates the type of the tuner included in the tuner unit, based on a control signal output from the tuner unit after the start of the communication between the tuner unit and the communication interface unit, and displays a receiving station corresponding to a channel receivable by the tuner, in accordance with the type of the tuner and information from the communication interface unit.

Abstract: A sound device includes a silent state detecting unit for detecting a silent state in a sound signal supplied by a personal computer; and a sound production preventing unit for preventing a sound from being produced from the sound signal supplied by the personal computer when the silent state is detected by the silent state detecting unit. By halting the production of a sound from the sound signal supplied from the personal computer when the silent state is detected, production of noise in a silent state is prevented so that the quality of sound in the expansion station is improved.

Abstract: A system comprises: a portable computer main body having therein a power source circuit section having a battery pack; and a plurality of auxiliary battery units which are mechanically connected and fixed to a casing of the computer main body and are electrically connected in series to a power source input terminal. A charge/discharge control section is provided for each of the auxiliary battery units. The charge/discharge control section sequentially charges from the auxiliary battery unit locating on the computer main body side when charging. On the contrary, the charge/discharge control section sequentially discharges from the auxiliary battery unit on the opposite side which is farthest from the computer main body when discharging. There is also a system construction having a single auxiliary battery unit.

Abstract: A video signal processing circuit, in which a horizontal synchronizing signal is separated from an input analog video signal by a synchronism separating circuit, whether a “H” period of the horizontal synchronizing signal continues for more than a prespecified period of time or not is checked by a synchronizing signal monitoring counter, and power supply to an A/D converter is controlled thereby according to a result the confirmation.

Abstract: A video signal processing circuit, in which a horizontal synchronizing signal is separated from an input analog video signal by a synchronism separating circuit, whether a “H” period of the horizontal synchronizing signal continues for more than a prespecified period of time or not is checked by a synchronizing signal monitoring counter, and power supply to an A/D converter is controlled thereby according to a result the confirmation.