Multiplexing system setting through mask registers
US4961189A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1989 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Aug 23, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/047
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Data multiplexing system for dispatching an input serial bit stream onto a plurality of ports, or multiplexing the data bits received from a plurality of ports as a serial bit stream. The system mainly comprises for each port, a mask register (14) loaded with a N-bit mask work wherein bits set to 1 indicate which bits of an aggregate register (10 or 56) are to be loaded or to be transferred, and a scan counter (20 or 46) starting being incremented at a high frequency at each transition of a first category, up or down, of a clock circuit (12 or 40), until the mask bit corresponding to the scan counter contents is a bit 1, whereby the corresponding cell of the aggregate register is transmitted to the associated port or loaded with the bit received at this time by the associated port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.