Kabushiki Kaisha Toshiba

Kiyoshi Hidaka

Takeshi Suyama

Eiichi Munetsugu

Ken Yamamoto

Teruhisa Kudo

According to one embodiment, a correction-parameter storing unit corrects a position of a captured image captured by an image sensor, and an image-position correcting unit corrects the position of the captured image for each pixel based on the correction parameter.

Solid-state imaging device having image pixel position correction to reduce shape distortion

A plain display apparatus has a plurality of display elements formed in vicinity of signal lines and scanning lines disposed in a matrix form, and a signal line drive circuit which switches order of supplying pixel data to the signal lines at random for each horizontal line.

Plain display apparatus, display control circuit and display control method, that divide plural signal lines in blocks

A small chip size and high picture quality, and also a quick CPU access operation to memory are achieved for a semiconductor device for driving liquid crystals. The semiconductor device includes a single-port memory that stores display-data to be displayed on a liquid crystal displaying section, a liquid crystal driver that retrieves the display-data stored in the single-port memory on a specific cycle and sends the display-data to the liquid crystal displaying section and a controller that controls the liquid crystal driver so that, when a CPU does not have access to the single-port memory, the display-data is retrieved from the single-port memory to the liquid crystal driver on the specific cycle and the retrieved data is sent to the liquid crystal displaying section, whereas, when the CPU has access to the single-port memory while the data is being retrieved from the single-port memory to the liquid crystal driver, a priority is given to the CPU so that the CPU starts an access operation while the liquid crystal driver stops a display-data retrieval operation, and on completion of the access operation, the liquid crystal driver starts again the display-data retrieval operation.

Semiconductor device for driving liquid crystal and liquid crystal display apparatus

This invention provides an image display apparatus for displaying data stored in a random access memory (RAM) such as LCD, more specifically a display driver achieving easy and flexible display control such as scroll in a display screen without increasing load on CPU and an image display apparatus including the same. This display driver comprises an RAM for storing the display data to be displayed on the display screen, a latch shift register for receiving the display data read out from the RAM and if the display screen is intended to be scrolled in a horizontal direction, shifting the read out display data depending on the scrolling direction and if the display screen is intended to be scrolled in a vertical direction, holding the read out display data and an access control circuit for reading out the display data from the RAM and if the display screen is intended to be scrolled in a horizontal direction, writing back the display data shifted by the latch shift register into an original position in the RAM and if the display screen is intended to be scrolled in a vertical direction, writing back the display data held by the latch shift register from the original position of the RAM to a position shifted by the amount of the scroll.

RAM incorporated display driver for reducing load on display screen control and image display apparatus including the same display driver

A segment electrode driving circuit of a liquid crystal driving circuit comprises: data storing means for storing therein k&plus;1 values in accordance with the k function values and 2 k-bit data and for simultaneously outputting 2 values on the basis of the alternating signal and a field select signal; 2 power supply lines provided so as to correspond to 2 outputs of the data storing means; a first analog multiplexer for connecting each of the 2 power supply lines to one of k&plus;1 power supplies, each of which has a potential different from each other, on the basis of a corresponding one of the 2 outputs of the data storing means corresponding to a corresponding one of the 2 power supply lines; and a second analog multiplexer, provided for each of segment electrodes, for receiving k display data corresponding to the selected k common electrodes from the RAM for display data, and for selecting one of the 2 power supply lines on the basis of the k display data to connect the selected one of the 2 power supply lines to a corresponding one of the segment electrodes. Thus, it is possible to prevent the manufacturing costs from increasing.

Liquid crystal driving circuit and liquid crystal display system

This invention provides a driving apparatus for a liquid-crystal display, comprising a dot-matrix liquid-crystal display with column electrodes and row electrodes, a control circuit for, in enlarging and displaying the display data, producing a display control signal containing a plurality of pulses during the latch period of a latch signal that latches the display data, a column-electrode driving section for latching the display data in a latch circuit in response to the display control signal from the control circuit, and based on the latched display data, causing a driving circuit to drive the column electrodes of the liquid-crystal display, and a row-electrode driving section for simultaneously driving a plurality of adjacent row electrodes of the liquid-crystal display in response to the display control signal from the control circuit. The present invention also provides a driving method for a liquid-crystal display, comprising the steps of selecting a single line of column electrodes according to the display data and at the same time, selecting a plurality of adjacent row electrodes at a time, when the display data is enlarged and displayed on a dot-matrix liquid-crystal display.

Apparatus and method for driving a liquid crystal display

A dot-matrix display apparatus comprising a display panel and two integrated circuits. The panel has a number of column electrodes extending vertically and parallel to one another, and a number of row electrodes extending horizontally and parallel to one another. Two TAB films are secured to the upper and lower edges of the panel. The integrated circuits are mounted on these TAB films, respectively. The first integrated circuit distributes odd-numbered ones of pixel data items simultaneously to the odd-numbered column electrodes, whereas the second integrated circuit distributes the even-numbered pixel data simultaneously to the even-numbered column electrodes. Either integrated circuit has an interface circuit and a control circuit, which cooperate to select the odd-numbered pixel data items or the even-numbered pixel data items. The pixel data items, thus selected, are stored into a RAM, and are supplied to the column electrodes, when necessary.

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Yokohama, Japan

Kiyoshi Hidaka