Abstract: A liquid crystal display includes a scanning voltage driver which applies selective scanning voltages to scanning electrodes of a liquid crystal display panel one group of M (an integer of 2 or greater) adjacent scanning electrodes at a time in accordance with M orthogonal function data. A data voltage driver applies to data electrodes of the liquid crystal display panel data voltages selected from M+1 data voltages in accordance with a coincidence number representing a number of coincidences between values of M display data corresponding to the M adjacent scanning electrodes in a current group of scanning electrodes and values of the M orthogonal function data corresponding to the M adjacent scanning electrodes in the current group.

Abstract: An IC card system includes an IC card, an IC card read/write unit for reading/writing the IC card, a communication unit intervening for connection to a communication line network, a controller for controlling the IC card read/write unit and communication unit, and a server system connected to the communication line network. The IC card is written with at least specified access destination information for accessing the server system, the controller automatically accesses the server system through the communication unit in accordance with the access destination information in the IC card, and the server system offers information to an information offering destination determined automatically by information to be offered which is processed by the server system, an information offering destination already written in the IC card inserted in the IC card read/write unit or an information offering destination designated by a user after the insertion of the IC card.

Abstract: A liquid crystal display control apparatus includes a display on/off data generation circuit for generating plural display on/off data per pixel corresponding to M (M>N, M and N being integers) frame periods of a video output signal in N frame periods of a video input signal on a unit pixel basis in response to gray-scale data of pixel units included in the video input signal, a write control circuit for writing display on/off data per pixel corresponding to M frames of the video output signal generated by the display on/off data generation circuit into a frame memory during N frame periods of the video input signal, and a read control circuit for sequentially reading out, from the frame memory, display on/off data corresponding to M frames of the video output signal written in the frame memory in synchronism with one display scan period of the video output signal, thereby the data written in the frame memory is not gray-scale data but display on/off data of one bit, therefore, a data bus width at a time o

Abstract: A gamma correction circuit includes a node level setting unit set predetermined level values of video signals from outside, in a case where encoded M-bit (where M is an arbitrary integer) video signals being represented by using predetermined number of sections and the level values of the video signals corresponding to 2n+1 number of nodes (where n is an arbitrary integer) associated with the sections on which the node are specified, and a gamma correction unit for executing gamma correction for the M-bit video signal in accordance with the level values of the nodes set in the node level setting unit, thereby the gamma correction circuit executes gamma correction on various types of display devices.

Abstract: An object of the present invention is to perform precise A-D conversion of analog video signal in a liquid crystal display monitor, without increasing a transmission line: to attain this object, a horizontal dividing signal synthesizing circuit of a graphics card superposes a horizontal dividing signal synchronized in phase with a clock for D-A conversion of the analog video signal on a horizontal sync signal, to obtain a second horizontal sync signal, to be outputted; a sync signal isolating circuit of the liquid crystal display monitor isolates the horizontal dividing signal and horizontal sync signal from the second horizontal sync signal; the PLL generates an A-D conversion clock synchronized with the horizontal dividing signal.

Abstract: A beam is irradiated to an information recording medium having land tracks and groove tracks alternately formed on a track formed in turn on an information recording surface thereof and pre-pits so pre-formatted as to deviate from the center of the track, a return beam of the irradiated beam is received by detectors split into two parts in a track direction to obtain a differential signal, the pre-pit is detected from this differential signal and control of recording and reproducing processings is executed by using the pre-pit detection signal so obtained as the reference.

Abstract: A liquid crystal projector comprises an illuminating optical system including a light source, a color separating optical system for separating illuminating light rays emitted by the illuminating optical system into light rays of three colors, a projection lens unit comprising a projection lens, a cross dichroic prism disposed near a light receiving end of the projection lens, and a plurality of liquid crystal panels arranged around the cross dichroic prism, and a light source power supply for supplying power to the light source. The projection lens unit, the color separating optical system, the illuminating optical system and the light source power supply are arranged in that order. The liquid crystal projector has an outside size in a horizontal plane of 263 mm by 318 mm or below. The liquid crystal panels have a display screen size of 0.9 in. A cooling fan for cooling the plurality of liquid crystal panels is disposed beside the projection lens.

Abstract: A display device which displays an image on a cathode-ray tube screen based on video information decoded from a signal-compressed digital broadcast signal. The video information contains fields having a number of scanning lines which may change from field to field, potentially causing vertical jitter in the displayed image. A circuit prevents the vertical jitter by setting a same vertical scanning start position of an electron beam on the screen for all of the fields regardless of the number of scanning lines. The circuit may be a clamp circuit which clamps a vertical ramp waveform; or a control circuit which controls a direct current level of the vertical ramp waveform when the number of scanning lines in a current field is different from a reference number of scanning lines; or an amplitude control circuit which performs feedback control of an amplitude of the vertical ramp waveform.

Abstract: There are provided a liquid crystal driving circuit and a liquid crystal display device in which the display brightness and color variation to input display data values can be adjusted. Input display data of one line period are taken into a latch circuit (1) with a latch signal output from a latch address control circuit, and latch circuit (1) data are taken into a latch circuit (2) at the timing of a line clock. Further, the latch circuit (2) data are input to a decode circuit. In accordance with set data output from a set register which sets the set register setting data with a set register setting clock, a gray-scale voltage which is matched with data of each pixel is selected and output as a selection voltage from the decode circuit. The selection voltage is buffered in an amplifying circuit, and then a liquid crystal applying voltage is output.

Abstract: A magnetic recording/reproducing apparatus equipped with an image sensor, comprising:

Abstract: A television receiver and a signal receiving method thereof includes a terminal for connecting the television receiver to a personal computer for inputting information from the personal computer to the television receiver, a display for displaying a television signal, an input operation means, such as a remote controller, for generating a command signal, and a controller supplied with the command signal for controlling the personal computer and for inputting the information from the personal computer through the terminal to the television receiver for converting the television receiver from a television mode to a personal computer mode for displaying the information on a screen of said display. Advantageously, the personal computer and the television receiver are controlled by a command signal from the input operation means.

Abstract: A video data display board, device or method for inputting and displaying video data including vertical blanking interval data containing character data and other image data than the vertical blanking interval data. The video data display device has a data transfer circuit capable of transferring both of the data to devices different from each other, so that the processing of character information and image data are performed by using the different devices which perform an appropriate process according to the property of the data. The processed character and image data are displayed on a graphic display screen simultaneously.

Abstract: A magnetic recording/reproducing apparatus equipped with an image sensor includes a camera portion having an A/D converter for converting a signal from an image sensor into a digital signal and a first digital processor for receiving an output of said A/D converter and for digitally processing thereof. A VTR portion of a helical scan type mounts at least two or more of magnetic heads for recording/reproducing a FM modulated luminance signal and a low band converted chrominance signal. A second digital processor processes a video signal of the VTR. A switching circuit is provided in a preceding state of said A/D converter. The signal from the image sensor, an external video signal and a reproduced signal from the magnetic heads are exchanged.

Abstract: A machine data acquisition system connected to a machine, for acquiring data on an internal status of the machine, and for use with an IC card having storage. The machine data acquisition system comprises an IC card accepting device which accepts the IC card, a machine data acquisition device which acquires data on the internal status of the connected machine, and a card writer which writes data acquired by the machine data acquisition device into the storage in the IC card.

Abstract: A processor 29 automatically sets a direction of transferring electronic money information depending on the existence of IC cards 1a, 1b connected to IC card connecting portions 11a, 11b, and the existence of an external device connected to an external device connecting terminal 8, thus making instructing operations for transferring electronic money information easier.

Abstract: A video camera system comprises a lens block and a camera block which are attachable and detachable through a block coupling mechanism to and from each other. The detachable lens block incorporates a focus lens drive mechanism for driving a focus lens and an autofocus control section for executing autofocus control. The autofocus control section receives a composite video signal obtained by processing a video signal from an image pickup device in a signal processing section of the camera block. The autofocus control section produces a focus control signal on the basis of the composite video signal to control the focus lens drive mechanism for the execution of the autofocus control. In addition, the detachable lens block is composed of an iris drive mechanism for optically adjusting an aperture of a lens and an autoiris control section for automatically controlling the iris drive mechanism, so that automatic iris control is executed on the basis of the composite video signal outputted from the camera block.

Abstract: The present invention relates to a video signal processing apparatus for converting video signals based on a desired transmission system such as NTSC, PAL, MUSE or any other system so as to conform to a display unit of a desired screen system such as XGA, VGA or the like. The apparatus has a feature that it is provided with a PLL circuit for changing a sampling frequency used by an analog-to-digital converter for converting inputted video signals into digital signals in accordance with the sort of the transmission system of the video signals, and a controller for controlling picture element interpolation of the digital signals performed by a picture image magnifying circuit for magnifying the video signals horizontally and vertically, in accordance with the sort of the transmission system of the video signals.

Abstract: A liquid crystal display apparatus includes a liquid crystal display panel which includes data lines and scanning lines intersecting each other in a matrix arrangement, and a plurality of pixels each including a switching element, a common electrode, and a pixel electrode, with the pixels being disposed at intersections of the data lines and the scanning lines. The apparatus also includes a plurality of signal driver circuits which supply driving voltage signals in accordance with display data to the data lines of the liquid crystal display panel, a scan driver circuit which sequentially selects the scanning lines of the liquid crystal display panel one at time, a power source circuit which supplies power voltages to the signal driver circuits and the scan driver circuit to supply power to the signal driver circuits and the scan driver circuit to enable the signal driver circuits and the scan driver circuit to operate.

Abstract: A liquid crystal display comprises a liquid crystal display panel having a plurality of scanning electrodes and data electrodes, the data electrodes driving circuit has a latch at a front stage for fetching a display data of two lines for partial driving and a latch at a post stage for storing the display data of two lines. The display data from the latch at the post stage is compared with the scanning function supplied from the scanning driver, one of the voltages at three levels is selected in accordance with the result of the comparison, and the selected voltage is applied to the data electrodes. Further, the data electrode driving circuit has a latch for storing the result of the comparison for a period of one line and a correction voltage is applied to the data electrode in accordance with a value obtained by comparing an output of the latch and the comparison result.

Abstract: A liquid crystal projector, comprising: a liquid crystal panel; a light source for irradiating light onto an image formed on the a liquid crystal panel; a projection lens for enlarging and projecting the image projected from the liquid crystal panel; a cooler, such as a suction fan, for sending cooling air flow onto a panel surface of the liquid crystal panel; an air velocity sensor for sensing air velocity of the cooling air flow sent onto the liquid crystal panel; and a protection device for protecting the liquid crystal panel on a basis of a detected value of the air velocity measured by the air velocity sensor. The is further formed an air passage for passing the cooling air flow along with the panel surface of the liquid crystal panel, and the air velocity sensor is positioned in an exit portion of the cooling air flow passing through the liquid crystal panel.