Abstract: One embodiment provides an electronic apparatus. The electronic apparatus includes a display panel; a backlight; a sync processor; a backlight driver; and a transmitter. The display panel displays an image. The backlight illuminates the display panel from its back side. The sync processor generates a backlight control signal according to sync pulses that indicate respective vertical sync periods for frame-by-frame display of the image on the display panel, or a shutter control signal for opening/closure control of a shutter provided in eyeglasses in synchronism with the backlight control signal. The backlight driver receives the backlight control signal generated by the sync processor, and to cause the backlight to be lit during a prescribed period of each vertical sync period. The transmitter configured to send the backlight control signal or the shutter control signal outward.

Abstract: One embodiment provides a light source device 10 that efficiently emits a light. The light source device 10 comprises a light-emitting element 12 that emits an excited light having a wavelength shorter than that of a blue light and a rod 14 having a light-converting member 13 enclosed inside and emitting a white light from an outgoing part 14out, the light-converting member 13 converting the excited light that enters through an incident part 14in into a long-wavelength light having a longer wavelength, and the incident part 14in is covered with a dichroic coat 17 that transmits the excited light and reflects the long-wavelength light.

Abstract: An electronic apparatus according to one embodiment includes a first board, a second board, light emitting elements and an image display. The second board is attached to the first board and thermally connected to the first board. The light emitting elements are provided on the second board and configured to emit light. The image display is configured to be illuminated by the light emitting elements and to display an image.

Abstract: According to one embodiment, an edge light-type back light unit includes, a light source, a light guide plate and a light quantity controller. The light source configured to exit light. The light guide plate includes a lens configured to prevent diffusion of the light exiting the light source and being incident onto a portion other than a portion corresponding to a vicinity of a boundary between the center portion and the periphery portion of the image display screen and a light diffuser of the light guide plate configured to diffuse light exiting the light source and being incident onto the portion corresponding to the vicinity of the border between the center portion and the periphery portion of the image display screen.

Abstract: According to one embodiment, an electric apparatus comprises a panel, a plurality of substrates at a back side of the panel, a plurality of first LEDs spaced apart from each other with gaps, on each of the substrates, and configured to illuminate the panel from the back side of the panel, and a plurality of second LEDs additionally arranged in the gaps at a substantially central portion in a lateral direction of the panel, of the gaps on each of the substrates, and configured to illuminate the panel from the back side of the panel.

Abstract: According to one embodiment, a backlight unit is of the edge light type that guides emitted light from a light source to a liquid crystal display panel by a light guide plate for irradiation from the back surface side thereof and includes a controller. The controller is configured so that the degree of irradiation at the center of a video display screen in the liquid crystal display panel is set to be greater than that at the periphery of the screen.

Abstract: A backlight device includes a light source, and a light guide plate. The light source device includes a board, and a plurality of light emitting elements in a row on the board. The light guide plate includes a first surface configured to abut against the board, and a second surface opposing the board, the light emitting elements in between the board and the second surface.

Abstract: A synchronization signal detector includes a horizontal synchronization level detector, a synchronization signal extractor, a first filter circuit, and a synchronous separator. The horizontal synchronization level detector detects a horizontal synchronization detection level HL for detecting a horizontal synchronization signal from a video signal Din. The synchronization signal extractor outputs a limited signal D1 obtained by extracting only a signal within a limit range (HL?n) to (HL+m) that is set based on the horizontal synchronization detection level HL from the video signal Din. The first filter circuit removes a high frequency component of the limited signal D1 and outputs it. The synchronous separator detects a horizontal synchronization signal HS from the output signal of the first filter circuit.

Abstract: A synchronization signal detector includes a horizontal synchronization level detector, a synchronization signal extractor, a first filter circuit, and a synchronous separator. The horizontal synchronization level detector detects a horizontal synchronization detection level HL for detecting a horizontal synchronization signal from a video signal Din. The synchronization signal extractor outputs a limited signal D1 obtained by extracting only a signal within a limit range (HL?n) to (HL+m) that is set based on the horizontal synchronization detection level HL from the video signal Din. The first filter circuit removes a high frequency component of the limited signal D1 and outputs it. The synchronous separator detects a horizontal synchronization signal HS from the output signal of the first filter circuit.

Abstract: An optical pickup head includes a base section, a first board which is provided on the base section and has a first wiring pattern, a second board which is provided on the base section at an angle different from that of the first board and has a second wiring pattern electrically connected to the first wiring pattern, and a flexible section which is formed on at least one of the first and second boards and to which a part of the wiring pattern is extended, the wiring pattern of the first board and the wiring pattern of the second board being soldered to each other via the wiring pattern extended to the flexible section.

Abstract: In a synchronous circuit constructed with a sequence circuit, for reproduce a clock signal synchronized with a synchronizing signal of such as television signal, an influence of variation of a d.c. component superposed on an edge of the synchronizing signal is reduced by obtaining phase errors at a falling edge and a rising edge of the synchronizing signal, arithmetically operating the phase errors and feeding back a result of the operation of the phase errors to a PLL. An influence of pseudo synchronizing signal is restricted by updating a phase error signal or holding a previous value according to the result of count of operation clocks during the synchronizing signal period.

Abstract: Because the whole image of a retrieved document group cannot be viewed, next retrieval request after one retrieval attempt has been determined only perceptually. Therefore, displaying a means for displaying topic words on a display means, extracting a group of words characteristically appearing in a retrieved document group on request from a user, further examining the relation between topic words, and preparing a graph using the topic words as nodes, the whole image of the retrieval results is displayed on the means for displaying topic words. Additionally, by selecting an interesting word or a word with no interest on a displayed graph of topic words, the user can design a subsequent retrieval strategy effectively.

Abstract: A turbo vacuum pump has a housing provided with a suction port and a discharge port, an evacuation pump disposed in the housing for compressing a gas suctioned through the suction port and discharging the compressed gas through the discharge port, and a motor for driving the evacuation pump, the motor and the evacuation pump having a common rotor. The rotor is supported at its both axial ends by bearings. A spiral grooved dynamic seal is disposed in the vicinity of the suction port and at the opposite side of the suction port to the evacuation pump. The diameter of the spiral grooved dynamic seal, at the smallest, is greater than the outside diameter of the final stage impeller of the evacuation pumps.

Abstract: A turbo vacuum pump has a housing provided with a suction port and a discharge port, an evacuation pump disposed in the housing for compressing a gas sucked through the suction port and discharging the compressed gas through the discharge port, and a motor for driving the evacuation pump, the motor and the evacuation pump having a common rotor. The rotor is supported at its both axial ends by bearings. A spiral grooved dynamic seal is disposed in the vicinity of the suction port and at the opposite side of the suction port to the evacuation pump. The diameter of the spiral grooved dynamic seal, at the smallest, is greater than the outside diameter of the final stage impeller of the evacuation pump.