Universal remote control device
US5959751A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Jun 13, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J2200/24
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The universal remote control system includes input means, signal output means for supplying a signal to a controlled device and a central processing unit coupled to the input means and the signal output means, no ROM, and a single non-volatile, read-write RAM coupled to said central processing unit. The RAM in the ROM-less microprocessor system is loaded by carryout out the following steps: (a) disabling the central processing unit; (b) connecting a separate microprocessor system to said RAM; (c) transferring instructions and/or data to said RAM; (d) re-enabling the central processing unit to enable the central processing unit to execute the instructions so transferred. The control codes of any of a diverse plurality of remote control transmitters are learned, stored and reproduced by carrying out the following steps: (a) receiving a transmission of a train of pulses from a remote control transmitter; (b) recording the point-in-time of an edge of each pulse in a train of said pulses; (c) transforming the recorded point-in-time data into a list of instructions for generating a replica of said train of pulses; (d) timing the duration of a train of said pulses; (e) timing the period b…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.