Communications: electrical – Continuously variable indicating – With meter reading
Patent
1989-01-17
1990-11-13
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
340825200, 370 29, 370109, H04Q 900
Patent
active
049705067
ABSTRACT:
In a method of controlling the start of data communication between two LSIs (master and slave) effecting a ping-pong transmission and the configuration of those LSIs, both the master and slave LSIs receive and detect a start instruction signal before starting the data transmission. The master LSI transmits an answer signal upon receiving a start instruction signal from the slave LSI, and starts, after a prescribed period of time, the ping-pong transmission to the slave SLI. In addition, when the master LSI itself transmits a start instruction signal to the slave LSI, it serves to start the ping-pong transmission to the slave LSI after receiving the answer signal from the slave LSI. The slave LSI transmits back, upon receiving the start instruction signal from the master LSI, an answer signal to start the ping-pong transmission. Furthermore, the slave LSI can also transmit by itself a start instruction signal to the master LSI, and thereupon starts the ping-pong transmission after receiving the answer signal from the master LSI.
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Narita Harutomo
Sakaida Yousuke
Holloway III Edwin C.
Yusko Donald J.
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