Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Denki K.k.

Masaru Nishimura

Yasuhiko Kohno

Naoto Sugawara

Hirofumi Shinohara

Tsutomu Takabayashi

Yasuhide Kasagi

Takeshi Terazawa

A method for driving an LCD apparatus in which a predetermined image is displayed by applying a predetermined column signals on pixels for constituting selected rows of a plurality of the pixels arranged in rows and columns pattern includes steps of: dividing the pixels into a plurality of groups each composing of at least two pixels in a direction of the columns; and changing polarity of the column signals for each group.

Method for driving liquid crystal display apparatus

A method is provided for driving an LCD apparatus in which a predetermined image is displayed by applying predetermined column signals to pixels constituting selected rows of an array of pixels arranged in columns and rows. The pixels are divided to form pluralities of groups that each have at least two pixels in either a column direction or a row direction. The column signals associated with each group are provided with a different polarity as to each adjacent group and a group characteristic is changed in different image frames. Alternatively, plural pixels in a column direction can be classified into a plurality of sets with each set including plural frames, and the polarity of the column signals for each of the sets can be changed or groups of pixels can be formed by dividing the pixels in the columns into groups all of which have at least two adjacent pixels in a direction of the columns and further with at least some of the groups having more than two pixels in the column direction and then applying column signals to each adjacent group in the column direction with a different polarity.

Method for driving LCD device comprises step of: applying one of upper image signal outputted from an upper liquid crystal drive circuit and lower image signal outputted from a lower liquid crystal drive circuit to a plurality of pixels of a selected line by scanning signal outputted from a scanning signal circuit out of the plurality of pixels disposed in matrix to display a predetermined image; wherein there exist in mixture a case where the polarities of the upper image signal and the lower image signal are inverted every one vertical period and a case where the same polarity is maintained. The driving circuit of LCD device of the present invention includes a vertical synchronization signal converting circuit so as to obtain upper image signal and lower image signal.

Method for driving a liquid crystal display apparatus and driving circuit therefor

A control circuit for controlling a driving circuit that provides signals to a displaying means, wherein a function of outputting a plurality of digital signals at different phases is included, and said phases can be set by selective elements.

Control circuit for liquid crystal display

In a magnetic head comprising a read/write head and an erase head constructionally integrated with each other, the closed magnetic circuit of the erase head is arranged to be higher in magnetic reluctance than the closed magnetic circuit of the read/write head, whereby a magnetic flux to be drawn by the erase gap is reduced so as to prevent the leakage of the magnetic flux to the read/write head side.

Magnetic head

Crosstalk prevention means or short-circuit means is connected in parallel to an erasing coil for erasing part of data prior to recording the data by a read/write coil, whereby a cancelling magnetic flux for erasing a crosstalk magnetic flux is generated to improved an S/N ratio.

Magnetic head device including crosstalk prevention circuit

A magnetic head without an erase head, which includes a substantially U-shaped magnetic core with opposed end faces of a pair of legs forming a gap; and a magnetic material attached to one of the end faces to form a write read head with the other end face to write and read data from a recording medium. The magnetic material has a saturated flux density lower than that of the magnetic core. A read track width made by the magnetic material and the other end face is smaller than a write track width made by the opposed end faces.

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Tokyo, Japan

Masaru Nishimura