Combined radio pager/timepiece apparatus with receiver desensitization protection
US4845485A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1987 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Dec 29, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B5/228
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A combined radio pager/analog timepiece that may be worn on the wrist of the user is described. The device includes a stepping motor to periodically advance the second hand of the watch portion. The voltage pulse device signals to the timepiece are effectively inhibited during those intervals when the paging receiver is activated. Receiver activation occurs so as to monitor its communication channel or actually process an intended message if its unique address has been received and detected. These inhibited, i.e. delayed, voltage device pulses are later applied to the stepping motor on an accelerated basis to bring the timepiece to current time status.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.