Apparatus for storing data into a digital-to-analog converter built-in to a microcontroller
US5644757A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1995 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Jun 12, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S345/904
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for inputting data into a digital-to-analog converter (DAC) in an automatic alignment monitor test system. The digital-to-analog converter is built into a microcontroller of the automatic alignment monitor test system. The apparatus is provided to input data into the DAC provided by an auto-alignment adapter of the automatic alignment monitor test system. A serial-to-parallel interface receives a data access request issued by the auto-alignment adapter. The serial-to-parallel interface converts a multiple of data bits sequentially into a parallel form of data for conversion by the digital-to-analog converter into analog signal. The serial-to-parallel interface has a logic decoder for selecting one of a number of digital-to-analog converter outputs for outputting the converted analog signal to the monitor under test. A set of buffers is located within the microcontroller for providing connection between the serial-to-parallel interface of the microcontroller and the auto-alignment adapter, the set of buffers being also connected to a CPU of the microcontroller for relaying signals issued by the CPU to the serial-to-parallel interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.