The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2001
Filed:
May. 10, 1999
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
For changing the content of a display RAM (,) or an accessory RAM (,), various data SDI, such as an instruction code, address data, display data, is initially transferred to a shift register (,). Then, the display data in the shift register (,) is latched by a latch circuit (,). A write operation is carried out during a period from the completion of a shift operation by the shift register (,) using various data SDI in connection with the current display to the completion of a shift operation using various data SDI in connection with the next display, i.e., a period with an operation enable signal CE remaining at an L or H level. As a result, time allowance for writing is ensured, which contributes to reduction of software processing load by an external device.