Portable input apparatus
US5701187A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1995 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Dec 13, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/1141
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A portable input apparatus used in conjunction with a controllable information processing apparatus which comprises a light receiving element receiving a base light emitted from a light emitting section of the controllable information processing apparatus and being composed of a first detector light receiving element, a second detector light receiving element and a reference light receiving element arranged therebetween, each being of a non-split type; an optical signal transmitting section transmitting an optical signal to the controllable information processing apparatus side; signal conversion sections converting an output current of the non-split type light receiving element and generating a time shared output voltage; a signal processing section processing the time shared output voltage to generate relative angle data; and a control section performing operation and calculation of the relative angle data to form a coordinate signal and transmitting the optical signal including the coordinate signal to the controllable information processing apparatus side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.