Communications: electrical – Continuously variable indicating – With meter reading
Patent
1985-09-16
1987-09-15
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
34082505, 34082507, H04Q 1104
Patent
active
046942939
ABSTRACT:
A data transmission system comprises a transmitter and a plurality of serially connected receivers. The transmitter, when energized, outputs an initialization signal to all of the receivers and also outputs a data of a predetermined value to the first receiver. In response to the initialization signal, the first receiver stores the received data in a register and modifies the received data to output a modified data to the second receiver. The second to last receivers operate in the same manner, so that different data are stored in the respective registers of the receivers. To transmit a given data to a selected one of the receivers, the transmitter outputs the given data with an identification code equal to the data stored in the register of the selected receiver. Although each of the receivers compares the received identification code with the contents of the register, only the selected receiver outputs a coincidence signal and stores the received data into a data utilization circuit thereof. A transmitter of a modified data transmission system outputs a given data together with an identification code which includes a bit of "1" at a bit position corresponding to the position of the selected receiver. Each receiver determines whether the received identification code has a "1" bit at a predetermined bit position, and if the determination is "YES" the receiver stores the received data in the data utilization circuit thereof. Each receiver also shifts the received identification code and outputs to the next receiver the shifted codes together with the received data.
REFERENCES:
patent: 4155075 (1979-05-01), Weckenmann et al.
patent: 4335426 (1982-06-01), Maxwell et al.
patent: 4608562 (1986-08-01), Minor et al.
Hagino Kiyoshi
Sugiyama Jun
Usui Akira
Nippon Gakki Seizo Kabushiki Kaisha
Yusko Donald J.
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