Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Noriko Kaku

Hiroshi Kojima

Makoto Mizuki

Takashi Koizumi

Hisao Kunitani

Tetsuro Oomori

Hiroyuki Kageyama

Hiroyuki Morinaga

Yumiko Kataoka

Seiichi Moriyama

Naoto Osaka

The current drive device of the present invention includes: a current source transistor for allowing a preset drive current to flow to a drain; a cascode transistor cascode-connected to the current source transistor; a switch circuit for switching ON/OFF flow of the drive current through the drain of the cascode transistor and a circuit to be driven; and a bypass circuit for allowing the drive current to flow therethrough to bypass the switch circuit and the circuit to be driven when the switch circuit is OFF.

Current drive device

When a contention is detected between a memory write address and a display read address in a memory circuit which stores display data, a host retry pulse generating circuit generates a display read signal and a display line data transfer signal based on a memory write clock, and supplies these to the memory circuit while supplying the display line data transfer signal to a line latch circuit. Alternatively, upon detection of the contention above, a same line re-display read processing circuit performs same line re-display read processing without moving to the next line, and supplies a display read signal and a display line data transfer signal to the memory circuit while supplying the display line data transfer signal to the line latch circuit.

Image display control method and image display control apparatus

Growing community of inventors

Kyoto, Japan

Noriko Kaku