Position pointing device including a controller for an AC field emitter in accordance with a binary code
US5679930A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 1994 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Oct 5, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/046
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A position pointing device codes information corresponding to an operation expressed by a continuously variable parameter without using an A/D converter and transmits the coded information to a position detecting device. The information corresponding to the operation expressed by the continuously variable parameter is converted into a time length. A counter counts the number of waves of an AC field received by a receiving circuit within the time length determined by the converting circuit, and performs binary coding of the counted value. A control circuit controls an emitter circuit in accordance with the binary code to change an AC field which is sent back to the position detecting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.