Sharp Kabushiki Kaisha Corporation

Masato Takemoto

Toshihiko Yoshida

Akira Tanimoto

Satoshi Tominaga

Toshiyuki Itoga

Takashi Tatsumi

Yutaka Iizuka

Mikio Higashiyama

Susumu Genba

Shinji Okamoto

Toshiro Kita

Power consumption, in an apparatus for generating a display unit drive voltage, is reduced. The potential at a point A is held substantially intermediately between V0 and V5 by a potential corrector 36. Voltage regulators 31, 32 supplied with V0 are connected through point A to voltage regulators 33, 34 supplied with voltage V5. Point A in turn is connected to a charger storing unit 35. The charge storing unit 35 stores the charge flowing into point A. Wasteful flow of electricity is thus eliminated for a reduction in power consumption.

Display-driving voltage generating apparatus

A coordinate detecting method for a liquid crystal display unit has the steps of generating a second display control signal for controlling a display provided in a display period and a non-display period on the basis of a first display control signal set such that one frame is constructed by only the display period; the display period and the non-display periods being set such that an image is displayed on a liquid crystal panel in the display period and is not displayed on the liquid crystal panel in the non-display period; storing transmitted image data to a memory in accordance with timings shown by the first display control signal; reading these stored image data from the memory in accordance with timings shown by the second display control signal; displaying the image on the liquid crystal panel by the read image data and the second display control signal; and detecting coordinates by a detecting pen in the non-display period. A coordinate detecting method and an apparatus for a liquid crystal integral type tablet is also shown.

Coordinative detecting methods and apparatus for liquid crystal display

An image processing device for controlling data transfer includes an image scanner, an image printer, a facsimile control unit, bus lines for data transfer, a bidirectional parallel interface unit, and a main CPU in a housing. The device is connected to an external data processing device through the parallel interface unit. In addition to the functions which are obtained independent from the external data processing device, the image processing device realizes various kinds of functions by controlling the image scanner, the image printer facsimile control unit and the interface unit by the main CPU in response to commands from the data processing device. As a result, various kinds of image processing functions are carried out.

Image processing device of multifunctional type

Growing community of inventors

Yamatokoriyama, Japan

Masato Takemoto