Abstract: A display apparatus, including a plurality of pixels arranged in a plurality of rows and a plurality of columns, each pixel including a pair of oppositely disposed electrodes and a liquid crystal disposed between the electrodes, a plurality of scanning lines each commonly connecting pixels arranged in a row, and a plurality of data lines each commonly connecting pixels arranged in a column, drive means for applying a scanning signal to the scanning lines and applying data signals to the data lines in synchronism with the scanning signal, a display data storage memory for storing display data supplied from a display data input device, a control for, when display data supplied from the display data input device is moving display data, controlling the display data storage memory to store the moving display data and supply address data for designating only scanning lines corresponding to the moving display data so as to control the electrode matrix to scan only the scanning lines on which the moving display data

Abstract: A liquid crystal display apparatus having scanning electrodes, data electrodes, and ferroelectric liquid crystal material placed between the scanning electrodes and the data electrodes. Scanning signals are applied sequentially to the scanning electrodes to select a scanning electrode. Data signals are applied in synchronization with the scanning signals to place a voltage at the intersection of the data electrode and the selected scanning electrode which will place the ferroelectric material at the intersection into the desired optical state. The scanning signals and the data signals are such that pixels located at the intersection of the non selected scanning electrodes and data electrodes receive an AC voltage superimposed onto a DC voltage. Pixels on selected scanning electrodes may also receive the AC voltage superimposed onto the DC voltage. The DC voltage has its polarity inverted with every vertical scanning period.

Abstract: A display device having plural scanning electrodes and plural information electrodes crossing the scanning electrodes. The scanning electrodes are scanned in a skipping manner during a first routine to refresh the display, scanned in a nonskipping manner during a second routine in response to a scroll display of a portion of the display, and scanned in a nonskipping manner during a third routine in response to a change in position of a pointing device. The first routine is executed before the second routine is executed and the third routine interrupts the second routine when the second and third routines occur simultaneously.

Abstract: A data processing apparatus includes a controller for controlling an image data storage memory so that received image data is stored in the image data storage memory and a controller for controlling the image data storage memory so that the memory is inhibited from storing image data during a period for partial rewriting scanning of a display panel. The apparatus serially receives from the image data storage memory and transfers to a drive controller scanning line address data for selecting a scanning line and display data for controlling display data signals applied to data lines associated with the selected scanning line.

Abstract: A data processing apparatus includes a data storage memory for storing image data including scroll display data and cursor display data for displaying a cursor at a position according to information from a pointing device. The apparatus is capable of judging a position of the cursor display data when, during storage of the scroll display data in the memory, a demand occurs for interrupting the storage of the scroll display data to store the position displaying the cursor, as to whether or not the position displaying the cursor at the time of the interruption is within a region in the image data storage memory where the storage of the scroll display data has been completed.

Abstract: A display device for displaying an image in accordance with image signal by applying a drive signal to a ferroelectric liquid crystal which holds an optical state even in a zero electric field state from drive means through scan electrodes and information electrodes in accordance with image information stored in image information memory means, comprises change detection means for detecting change in the image information stored in the image information memory means, and drive control means for controlling drive means in accordance with detection result by the change detection means to apply a signal to erase the display, stop the application of the drive signal or resume the application of the drive signal.

Abstract: A liquid crystal apparatus includes a liquid crystal device including scanning electrodes, data electrodes and a ferroelectric liquid crystal disposed between the scanning electrodes and the data electrodes. A scanning selection signal and a scanning nonselection signal are applied to the scanning electrodes. The data signals are applied to the data electrodes in phase with the scanning selection signal. The average voltage values of the data signals are varied during the period of applying a scanning selection signal.

Abstract: A display apparatus includes a display panel having a matrix electrode arrangement of intersecting scanning lines and data lines, a driving voltage generating means for supplying voltages to be applied to scanning lines to a scanning line driving means for driving scanning lines, as well as voltages to be applied to data lines to a data line driving means for driving data lines, at least one voltage level being supplied to the scanning and to the data line driving means, a switching means for turning on or off an electrical connection between the driving voltage generating means to a power source for supplying or disconnecting power to the driving voltage generating means, and a control means for controlling the scanning line driving means and the data line driving means such that a scanning signal voltage is applied to a scanning line to scan the same while a data signal voltage corresponding to image data is applied to a data line when the switching means is on, such that the one voltage level is supplied t

Abstract: A data processing apparatus with a receiver for receiving image data having a plurality of graphic events. A controller for controlling an image data storage memory so that the received image data is stored in the memory in the order of from a higher display priority level of the graphic events based on prescribed display priority levels of the graphics events. The controller controlling the image data storage memory so image data having a lower priority stored in the memory is outputted from the memory to a display drive controller until image data having the higher priority is started to be stored in the memory.

Abstract: A data processing apparatus includes a receiver for receiving image data having a plurality of graphic events; (b) for controlling an image data storage memory so that the received image data is stored in the memory in the order of from a higher display priority level of the graphic events based on prescribed display priority levels of the graphic events and a controller for controlling the image data storage memory so that the stored image data is transferred in the order of from a higher priority level of the graphic events to a drive control.

Abstract: A liquid crystal apparatus comprises a) a liquid crystal device comprising an electrode matrix composed of scanning electrodes and data electrodes, and a ferroelectric liquid crystal; and b) a driving means. The driving means includes a first drive means for applying a scanning selection signal two or more scanning electrodes apart in one vertical scanning so at to effect in one picture scanning in plural times of vertical scanning, and a second drive means for applying data signals in synchronism with the scanning selection signal.

Abstract: Driving apparatus including scanning electrodes and data electrodes, a liquid crystal assuming first and second optical states according to the polarity of a writing voltage applied thereto and disposed between the scanning and data electrodes, scanning-side and drive-side drivers, and a controller for controlling these drivers. The scanning-side drive supplies first and second scanning selections signals having mutually different voltage wave forms to the scanning electrodes so that the first and second scanning selection signals are applied alternately in respective vertical scanning periods. The data-side driver supplies data pulses to the data electrodes in synchronism with the first and second scanning selection signals so as to form one picture in at least four vertical scanning periods. The controller controls the scanning-side and data-side drivers so as to scroll each picture in at least four vertical scanning periods.

Abstract: A data processing apparatus includes: receiver for receiving image data having a plurality of graphic events; a controller for controlling an image data storage memory so that the received image data is stored in the memory in the order of from a higher display priority level of the graphic events based on prescribed display priority levels of the graphic events and a controller for controlling the image data storage memory so that the stored image data is transferred in the order of from a higher priority level of the graphic events to a drive control.

Abstract: A data processing apparatus includes a controller for controlling an image information storage memory. The controller controls the storage memory so that received image information is stored in the image information storage memory as scanning line address information and display information, with the scanning line address information designating scanning lines of a display device which accesses different areas in the image information storage memory. The controller also controls the storage memory so that the scanning line address information and the display information stored in different areas are serially transferred to a drive control in the display device, and so that the scanning address information which is transferred to the drive control accesses the designated scanning lines only.

Abstract: A driving apparatus comprises a driving unit and a drive voltage generating unit. The driving unit includes a scanning electrode driver and a data electrode driver for driving an electrode matrix formed of scanning electrodes and data electrodes. The drive voltage generating unit includes a first means for generating a fixed voltage, a second means for generating a source voltage for providing drive voltages for driving the electrode matrix, and a third means for generating a first voltage equal to a subtraction of the fixed voltage from the source voltage and a second voltage equal to a subtraction of the source voltage from the fixed voltage. The first and second voltages are preferably controlled so as to vary depending on an external temperature.

Abstract: A display apparatus includes: a) a matrix electrode structure comprising a set of plural scanning electrodes and a set of plural data electrodes intersecting with the scanning electrodes; b) a scanning electrode driver for serially applying a scanning selection signal to the scanning electrodes and a data electrode driver for applying data signals in parallel; c) an address generator for serially generating an address signal for addressing a scanning electrode to which the scanning selection signal is to be applied and image signals for directing data signals to be sent to the data electrodes to the respective data electrodes; and d) a circuit for generating a signal for directing a changeover between a transfer of the address signal to the scanning electrode driver and a transfer of the image signals to the data electrode driver. The display apparatus is particularly adapted for partial rewriting.

Abstract: A display control unit is combined with a display device including X and Y side electrodes and a display element sandwiched between the X and Y side electrodes. The display control unit includes a plurality of lines for supplying voltages having different values to the X and Y side electrodes, a switch for connecting the lines with the electrodes or disconnecting the lines from the electrodes, and a unit for controlling the switch within a selection period of the X or Y side electrodes.

Abstract: In a liquid crystal apparatus the scanning electrodes are applied with at least two scanning selection signals in at least two vertical scanning periods. The scanning selection signals comprise mutually different waveforms, each comprising a pulse of one or the opposite voltage polarity with respect to the level of a voltage applied to a scanning electrode when it is not selected. Data pulses are applied to the data electrodes in phase with the pulse. A writing voltage and a fore voltage are applied prior to the writing voltage formed by the combination of the pulse and a data voltage to a pixel on a scanning electrode during a selection period determined by application of the one or the opposite polarity to the scanning electrode. The fore voltage pulse has a polarity opposite to that of the writing voltage and an amplitude which is 1/2 or less of that of the writing voltage.

Abstract: A display apparatus includes a display panel having a display picture area formed by scanning electrodes and data electrodes arranged in a matrix. A display data storage memory stores data supplied from a display data input device. A controller controls the display data storage memory to store the moving display data. The controller also supplies address data for designating only the scanning lines corresponding to the moving display data so as to control the electrode matrix to scan only the scanning lines on which the moving display data is written.

Abstract: A display apparatus, comprises a plurality of pixels arranged in pluralities of rows and columns. A plurality of first control lines is provided, each connecting a column of pixels in common, and a plurality of second control lines is provided, each connecting a row of pixels in common. The first control lines are divided into a plurality of blocks. Third control lines are disposed so that the first control lines in each of the blocks are commonly connected by a third control line. A multiplexing switching element is disposed at each connection between the third control lines and the first control lines. Further, a difference in output voltage between two multiplexing switching elements disposed at a boundary between a neighboring pair of blocks is 50 mV or less.