H - Electricity – 04 – B
Patent
H - Electricity
04
B
365/7
H04B 1/16 (2006.01) H03J 5/02 (2006.01) H04N 5/775 (2006.01)
Patent
CA 1124901
S01129 CHANNEL SELECTING APPARATUS FOR USE WITH SIGNAL RECEIVER AND SIGNAL RECORDER ABSTRACT OF THE DISCLOSURE Channel selecting apparatus for use with a signal receiver coupled to a first tuning device and a signal recorder coupled to a second tuning device. The channel selecting apparatus is operable to tune the first and second tuning devices to preselected channels for receiving broadcast frequencies. In one embodiment, the signal receiver is a television receiver including a video display, and the signal recorder is a video recorder, such as a video tape recorder (VTR). Selectively operable channel selectors, such as selector switches, are common to the first and second tuning devices for generating and supplying channel selector signals to the tuning devices so as to determine the tuning condition of both tuning devices. A locking circuit is operative in response to the actuation of the VTR to lock the second tuning device to the tuning condition determined by the channel selector signal generated by the channel selector switches immediately prior to said actuation of the signal recorder regardless of the subsequent generation of different channel selector signals by the channel selecting switches. The locking circuit is opera- tive in the absence of the actuation of the VTR to enable the tuning condition of the second tuning device to be determined by the channel selector signals which are generated by the channel selecting switches simultaneously with the determination of the tuning condition of the first tuning device. A switching circuit has first and second inputs coupled to the first and second tuning devices, respectively, to receive the channels to which the first -i- and second tuning devices are tuned, and an output coupled to the television receiver, the switching circuit being operative in the absence of the actuation of the VTR to connect the output of the switching circuit to the second input thereof. When the VTR is actuated, the switching circuit is operative to connect the output thereof to its first input. The broadcast frequency which is received by the second tuning device is supplied to the television receiver when the VTR is not actuated, and the broad- cast frequency which is received by the first tuning device is supplied to the television receiver when the VTR is actuated. -ii-
317984
Amano Toshio
Sato Masaru
Gowling Lafleur Henderson Llp
Sony Corporation
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