Honeywell Information Systems Inc.

Bull Hn Information Systems, Inc.

Robert G Moles

Gary J Goss

Randall D Hinrichs

Thomas O Holtey

A timing generator module is constructed from a single multitap active delay line circuit. The delay line taps are customized to delay an input pulse by different amounts, the differences between the amounts being selected as a function of the widths of the output pulses to be generated by the module. The output pulses from each of a number of different pairs of taps are logically combined within corresponding ones of a number of output logic gate circuits. A selected one of each pair of pulses is inverted before being logically combined with the other pulse of the pair for accurately controlling the transitions of the corresponding output pulse. The active delay line circuits are packaged within a single dual line package for maintaining accurate tolerances.

Timing generator module

An apparatus for decoding data wherein only binary ZEROs are received as electronic pulses, each pulse alternating in opposite directions and wherein binary ONEs require no pulse. The apparatus includes logic for receiving the negative and positive binary ZERO pulses, retiming the pulses and generating a positive pulse for each binary ZERO pulse. The positive pulse is retimed to a pair of complementary pulses and applied to a receiving device, typically a universal synchronous/asynchronous receiver transmitter (USART).

Digital decode logic for converting successive binary zero pulses having

An apparatus for decoding and synchronizing data wherein only logic ZERO data bits are received as electronic pulses, each pulse alternating in opposite directions and wherein logic ONE data bits are received as no pulse. The synchronization logic includes a counter which is delayed a count of binary ONE if the logic ZERO data bit is received late, and the counter is advanced a count of binary ONE if the logic ZERO data bit is received early.

Digital apparatus for synchronizing a stream of data bits to an internal

An apparatus for encoding data for serial transmission wherein only logic ZEROs are transmitted as electronic pulses, each pulse alternating in opposite direction and wherein logic ONEs require no pulse.

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Sudbury, MA, United States of America

Robert G Moles