Multichannel interface

Details Multichannel interface Multichannel interface

1982-12-06

1986-12-09

Hoffman, James R.

Boots, shoes, and leggings

364900, G06F 1338

Patent

active

046284460

ABSTRACT:
Disclosed is a method and apparatus for interfacing N bit-serial communication channels to an N-bit parallel communication channel. The serial channels are interfaced simultaneously, i.e., during a single bit time, with the parallel channel by an interface unit that is shared by the serial channels. The interface unit is microprocessor based. To service all serial channels simultaneously, the microprocessor's interface program divides each bit interval into 2N time slots and allocates two time slots per bit interval to each of the N channels, one time slot for functions associted with receipt of bits from the serial channel and transmittal thereof on the parallel channel, and one time slot for functions associated with receipt of data from the parallel channel and transmittal thereof on the serial channel. At the beginning of each time slot the program causes an updated word to be transmitted to the serial channels, one bit to each channel, and a sample word to be received from the serial channels, one bit sample from each channel. The program identifies the samples of centers of the bits received from the serial channels and uses these as the received bit values.

REFERENCES:
patent: 3821480 (1974-06-01), Dundon et al.
patent: 3872444 (1975-03-01), Cleveland et al.
patent: 4016367 (1977-04-01), Law et al.
patent: 4024505 (1977-05-01), Sperling
patent: 4052702 (1977-10-01), Smith et al.
patent: 4095266 (1978-06-01), Carubia et al.
patent: 4097695 (1978-06-01), Grace et al.
patent: 4183084 (1980-01-01), Lawson
patent: 4188665 (1980-02-01), Nagel et al.
patent: 4218742 (1980-08-01), Carlton
patent: 4264984 (1981-04-01), Anderson
patent: 4271518 (1981-06-01), Birzele et al.
patent: 4276594 (1981-06-01), Morley
patent: 4293924 (1981-10-01), Struger et al.
J. Tallman, "The Model I as a Dumb Terminal", 80 Microcomputing, pp. 276-294 (Apr. 1981).
T. Loos, "300 Baud Terminal", 80 Microcomputing, pp. 136-140, (Aug. 1980).
T. Dollhoff, 16 Bit Microprocessor Architecture, pp. 290-298, 438-439.

Affiliated with

Also associated with

Rating

Multichannel interface does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multichannel interface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multichannel interface will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1389127