US4680754A
Expired / Lapsed
US
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Multi-function bus
Assignee: Rockwell Firstpoint Contact Corp
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Filing: 1985-06-03
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Granted: 1987-07-14
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Expires: 2005-06-03
Abstract
Abstract This disclosure depicts a multi-function bus for use with a central processor system, user devices having user interfaces and a host switching interface unit. The multi-function bus has a first pre-determined number of transmit and receive lines connecting the central processing system, the user interfaces and the host interfacing unit. A second pre-determined number of channels on each of the transmit and receive lines is provided for on the multi-function bus. A multi-function bus includes the transfer of information to and from the host switching system both in a serial mode and in a parallel mode on the multi-function bus.
Inventors
- 👤 William A. Fechalos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:45
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0407
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A multi-function bus for use with a central processor system, user devices having user interfaces and a host switching interface unit, said multi-function bus comprising: a first pre-determined number of transmit and receive lines connecting a central processing system, the user interfaces and the host switching interface unit; a second pre-determined number of channels on each of said transmit and receive lines, said channels grouped on said multi-function bus in a frame, each frame having a predetermined number of bits and each bit having a predetermined bit period, each of such channels having end bits and appearing serially within said frame, said frame also including a frame synchronization bit; means for transferring information to and from said host switching interface in a serial mode on said multi-function bus; and means for transferring information between said central processding system and said user interfaces in a a parallel mode on said multi-function bus; said multi-function bus operated in a serial mode, and in a parallel mode, by said first and second means for transferring information by utilizing one-half of each bit period for serially transmission and the other one-half bit period for parallel transmission.
Claim 2
Dependent Claim
192 words
A multi-function bus for use with a central processor system, user devices having user interfaces and a host switching interface unit, said multi-function bus comprising: a first pre-determined number of transmit and receive lines connecting a central processing system, the user interfaces and the host switching interface unit; a second pre-determined number of channels on each of said transmit and receive lines, said channels grouped on said multi-function bus in a frame, each frame having a predetermined number of bits and each bit having a predetermined bit period, each of such channels having end bits and appearing serially within said frame, said frame also including a frame synchronization bit; means for transferring information to and from said host switching interface in a serial mode on said multi-function bus; and means for transferring information between said central processding system and said user interfaces in a a parallel mode on said multi-function bus; said multi-function bus operated in a serial mode, and in a parallel mode, by said first and second means for transferring information by utilizing one-half of each bit period for serially transmission and the other one-half bit period for parallel transmission.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |