Communications: electrical – Continuously variable indicating – With meter reading
Patent
1982-08-23
1985-04-30
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
3581941, 455603, H04B 900, H04Q 900
Patent
active
045147329
ABSTRACT:
Remote control of TV receivers, disc players and video cassette recorders (VCRs) involves controlling functions that are continuous, such as volume or brightness control. The selected function is increased or decreased as long as the user continues to depress the appropriate key on the transmitter. Typically, a signal is transmitted for as long as the key remains depressed, but this can significantly shorten transmitter battery life. To increase battery life, a burst of data is transmitted to identify the command when a continuous function key is initially depressed. The remote receiver, upon receiving this command, begins to increase or decrease the appropriate function. After the initial burst of data is issued by the transmitter, no additional signals are transmitted as long as the key remains depressed. During this time, the remote receiver continues to increase or decrease the selected function. When the transmitter key is released, a second burst of data is transmitted to instruct the remote receiver to cease changing the selected function. Thus, a function which appears to be continuous to the user is accomplished by issuing only two commands, regardless of the length of time the key remains depressed. This technique substantially reduces battery capacity consumed for the control of continuous functions.
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General Electric Company
Yusko Donald J.
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