Information memory device

Abstract

Abstract PURPOSE:To flexibly cope with information at high speed by providing a means that accesses to a storing means at a prescribed bit width and sets effective bit width to accessed information. CONSTITUTION:When picture information corresponding to a rectangular area having a protruding part of 10 bits at right end is supplied from an external device, start addresses in X, Y directions and writing width in X, Y directions are supplied from the external device to a control section 7 as various parameters. The control section 7 judges mask data that determine the bit width, and sets [1111111111000000] to an effective bit width designating register 4a, and sets [1111111111111111] to a register 4b, and sets above-mentioned parameters to a two-dimensional address generating section 2. The two-dimensional address generating section 2 normally selects the register 4b and writes data in width of 16 bits, and outputs a signal MSE at the end of a line and selects the register 4a, and rewrites only by 10-bit width.

Inventors

• 👤 Tadanobu Kamiyama
• 👤 神山　忠信
• 👤 Masami Taoda
• 👤 政美 垰田

Bibliographic Details