Timing signal generator for digital communication system
US5809091A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Jun 4, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/002
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A timing generator synchronizes a mobile station internal timing with a base station in a TDMA cellular communication system. A random access memory is used to store an event list comprising a series of events which must be executed periodically at precisely timed intervals. Each event in the event list includes an event time and an event code. The events are stored in the random access memory in the order in which they are to occur. The timing generator of the present invention uses a primary counter, a secondary counter, a synchronizing register, a comparator and a signal generator to control the execution of the event in the event list. The primary counter and secondary counter are both clocked at the same rate. The events are read one at a time from the event list into a compare resister. The event time is compared to the value of the secondary counter. When the event time matches the secondary counter value, the event action is passed to the signal generator which decodes and executes the events. The next event is then read into the compared register and the process is repeated until the end of the event list is reached. Once the end of the event list is reached, no further ac…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.