Abstract: The purpose of the present invention is to realize a battery holder, which can suppress occurrence of an instantaneous interruption in outputting direct-current power to the outside due to continuous strong external vibrations or impacts and have good attachability and detachability of battery. The battery holder includes electrode contact portions 13 (14) configured to be electrically connected to a battery BAT to be housed therein, wherein the electrode contact portions include a metal plate 132 (142) attached to a base 131 (141) having elasticity.

Abstract: The purpose of the present invention is to realize a battery holder, which can suppress occurrence of an instantaneous interruption in outputting direct-current power to the outside due to continuous strong external vibrations or impacts and have good attachability and detachability of battery. The battery holder includes electrode contact portions 13 (14) configured to be electrically connected to a battery BAT to be housed therein, wherein the electrode contact portions include a metal plate 132 (142) attached to a base 131 (141) having elasticity.

Abstract: A battery housing device includes a case configured to house a battery and having a plus terminal and a minus terminal, a plus pole spring provided in the case and having one end connected to the plus terminal and an opposite end configured to come in contact with a plus pole of the battery, a minus pole spring provided in the case and having one end connected to the minus terminal and an opposite end configured to come in contact with a minus pole of the battery, and a battery support configured to support a bottom face of the battery and to support a side wall of the battery. The battery can be attached to and detached from the battery support in a length direction of the battery.

Abstract: A battery storing device may include: a case member having a positive terminal and a negative terminal and configured to store a battery therein; a positive pole coil spring in contact with a positive electrode of the battery; a negative pole coil spring in contact with a negative electrode of the battery; and a first support comprising a sidewall support section having an elastic force that is able to fix the battery while absorbing a size difference of the battery allowed according to a standard, and configured to support a sidewall of the battery.

Abstract: A battery housing device includes a case configured to house a battery and having a plus terminal and a minus terminal, a plus pole spring provided in the case and having one end connected to the plus terminal and an opposite end configured to come in contact with a plus pole of the battery, a minus pole spring provided in the case and having one end connected to the minus terminal and an opposite end configured to come in contact with a minus pole of the battery, and a battery support configured to support a bottom face of the battery and to support a side wall of the battery. The battery can be attached to and detached from the battery support in a length direction of the battery.

Abstract: More accurate frame-rate conversion is carried out in a simpler circuit configuration. Search areas SA+1 and SA?1 in each of which the pixel facing the interpolation position P0 of a pixel in an interpolation frame is taken as a central pixel are set in the current frame and immediately previous frame of an image signal, a set of pixels point-symmetrical to the interpolation position P0 in each of the search areas SA+1 and SA?1 are defined as pixel pairs, and differential luminance values between the individual pixels in the pixel pairs are calculated for each pixel pair. Of all these pixel pairs, only that having the minimum absolute differential value is selected as interpolation pixel pair, an interpolation frame is generated from the current frame and the immediately previous frame on the basis of the interpolation pixel vector of that interpolation pixel pair.

Abstract: Even in a liquid crystal display device that has been completed as a product, EMI countermeasures and power saving can be realized according to the use environment of an electronic apparatus in which the liquid crystal display device is to be mounted. A timing converter mounted on an interface printed circuit board of the liquid crystal display device is provided with a display mode selecting terminal. A display mode selecting signal which varies the frequency of a pixel clock signal for an image signal is applied to the display mode selecting terminal from the outside, thereby varying the frequency of the pixel clock signal.

Abstract: On an interface of a liquid crystal display device, which converts the number of pixels of image signals inputted from an external signal source, such as a host computer, into image signals having a smaller number of pixels and fetches the image signs into drain drivers at double edges of a clock signal of low frequency, a clock surveillance unit is mounted, which includes a clock synthesizer and a clock comparator circuit, and which detects the presence or the absence of an irregularity in the timing of a pixel clock signal inputted from the external signal source and outputs a determination of the normal/irregular status of the pixel clock signal. When it is determined that the pixel clock signal is irregular, the supply of image data to the drain drivers from a parallel-serial converter is stopped, so that the generation of an irregularity in the display produced by the liquid crystal display device can be obviated.

Abstract: More accurate frame-rate conversion is carried out in a simpler circuit configuration. Search areas SA+1 and SA?1 in each of which the pixel facing the interpolation position P0 of a pixel in an interpolation frame is taken as a central pixel are set in the current frame and immediately previous frame of an image signal, a set of pixels point-symmetrical to the interpolation position P0 in each of the search areas SA+1 and SA?1 are defined as pixel pairs, and differential luminance values between the individual pixels in the pixel pairs are calculated for each pixel pair. Of all these pixel pairs, only that having the minimum absolute differential value is selected as interpolation pixel pair, an interpolation frame is generated from the current frame and the immediately previous frame on the basis of the interpolation pixel vector of that interpolation pixel pair.

Abstract: A liquid crystal display apparatus including a display control unit which includes a reordering unit which reorders originally ordered display data inputted thereto, and sends the reordered display data to M ones of a plurality of drivers through a bus line to which the M drivers are connected, where M is a positive integer, the M drivers connected to the bus line being divided into N driver groups, where N is a positive integer smaller than M, and a clock generating unit which generates N clock signals having a same frequency as and different phases from each other, and sends the N clock signals to the N driver groups respectively such that each one of the N clock signals is sent to a respective one of the N driver groups.

Abstract: Even in a liquid crystal display device finished as a product, EMI countermeasures and power saving are realized according to the use environment of an electronic apparatus in which to mount the liquid crystal display device. A timing converter mounted on an interface printed circuit board of the liquid crystal display device is provided with a display mode selecting terminal. A display mode selecting signal which varies the frequency of a pixel clock signal for an image signal is applied to the display mode selecting terminal from the outside, thereby varying the frequency of the pixel clock signal.

Abstract: To an interface of a liquid crystal display device which converts the number of pixels of image signals inputted from an external signal source such as a host computer into image signals having the less number of pixels and fetches the image signals into drain drivers at double edges of a clock signal of low frequency, clock surveillance means comprising a clock synthesizer and a clock comparator circuit which detects the presence or the absence of the irregularity of timing of a pixel clock signal inputted from the external signal source and outputs a determination signal of normal/irregular of the pixel clock signal are mounted. When it is determined that the pixel clock signal is irregular, the supply of the image data to the drain drivers from a parallel-serial converter is stopped so that the generation of the irregularity of display in the liquid crystal display devices can be obviated.

Abstract: A liquid crystal display apparatus including a display control unit which includes a reordering unit which reorders originally ordered display data inputted thereto, and sends the reordered display data to M ones of a plurality of drivers through a bus line to which the M drivers are connected, where M is a positive integer, the M drivers connected to the bus line being divided into N driver groups, where N is a positive integer smaller than M, and a clock generating unit which generates N clock signals having a same frequency as and different phases from each other, and sends the N clock signals to the N driver groups respectively such that each one of the N clock signals is sent to a respective one of the N driver groups.

Abstract: A liquid crystal display apparatus comprises a liquid crystal display panel having a plurality of pixels formed in a matrix configuration, M driving means for applying a plurality of pixels arranged in a column direction with video voltage based on display data, where M is a positive integer, and display control means for sending inputted display data to the M driving means, and for generating control signals including at least clock signals based on input display control signals inputted thereto and sending the control signals to the M driving means to control and drive the M driving means, wherein the display control means reorders originally ordered display data inputted thereto and sends the recorded display data to the M driving means, and generates N clock signals having the same frequency as and different phases from each other, where N is a positive integer smaller than M, and sends the N clock signals to N driving means groups, respectively.

Abstract: A liquid crystal display device includes a liquid crystal display panel in which pixels are arranged in rows and columns. Each of the pixels includes a pixel electrode, and a thin-film transistor having a gate electrode and a drain electrode. Gate signal lines arranged in the rows are connected to the gate electrodes of the thin-film transistors. Drain signal lines arranged in the columns are connected to the drain electrodes of the thin-film transistors. The liquid crystal display device further includes a gate drive circuit for driving the gate signal lines, and a drain drive circuit for driving the drain signal lines. The drain drive circuit receives a plurality of grey-scale reference voltages from an external circuit, interpolates a plurality of intermediate voltages between each pair of adjacent ones of the grey-scale reference voltages, selects voltages from the grey-scale reference voltages and the intermediate voltages, and applies the selected voltages to the drain signal lines.

Abstract: A liquid crystal display device includes a drain drive circuit for driving drain signal lines of a liquid crystal display panel. The drain drive circuit receives a plurality of grey-scale reference voltages from an external circuit, interpolates a plurality of intermediate voltages between each pair of adjacent ones of the grey-scale reference voltages, selects voltages from the grey-scale reference voltages and the intermediate voltages, and applies the selected voltages to the drain signal lines. V0 is a grey-scale reference voltage corresponding to a minimum grey-scale level, Vm is a grey-scale reference voltage corresponding to a maximum grey-scale level, and Vi is a grey-scale reference voltage that is nearest to a voltage level (Vm+V0)/2. A number of intermediate voltages interpolated between V(i-1) and Vi is greater than both a number of intermediate voltages interpolated between V0 and V1, and a number of intermediate voltages interpolated between V(m-1) and Vm.

Abstract: An optical repeater for realizing transmission of supervisory information of an optical fiber transmission system without the output power of an optical fiber amplifier being reduced, wherein a supervisory optical transmitter and optical receiver with a wavelength which is similar to the wavelength of the pumping light source of the optical fiber amplifier are mounted, and on the input side of the optical repeater, pumping light is multiplexed in the forward direction and a supervisory optical signal, which is multiplexed in wavelength and transmitted, is demultiplexed simultaneously by the first wavelength multi- and demultiplexer and they are received by the supervisory optical receiver, and on the output side of the optical repeater, pumping light is muitiplexed in the reverse direction and a supervisory optical signal outputted from the supervisory optical transmitter is multiplexed by the second wavelength multi- and demultiplexer.