Data accessing interface having multiplex output module and sequential input module between memory and source to save routing space and power and related method thereof
US7782287B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 2006 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Feb 24, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0297
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data accessing interface between memory and source in LCD display IC includes a multiplex output module and a sequential input module. Suppose a row width of the memory is N bit. The multiplex output module is for outputting a row N-bit digital data. The multiplex output module includes a buffer for receiving the row N-bit digital data from the memory; and a multiplex unit for continuously selecting M bits from the N bit digital data to output to source. After N/M times, all of the row N bit digital data will be output to source. The sequential input module includes N latches and N/M latch control signals; when each latch control signal is active, it will latch M bit digital data from the multiplex output into M latches. After N/M latch control signals are active sequentially, the N bit digital data are stored into the N latches for source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.