Signal switching method of a TV-VCR combination having two tuner

Details Signal switching method of a TV-VCR combination having two tuner Signal switching method of a TV-VCR combination having two tuner

1990-01-19

1993-03-09

McElheny, Jr., Donald

Facsimile and static presentation processing

Facsimile

Recording apparatus

360 331, H04N 5782

Patent

active

051930099

ABSTRACT:
A signal switching method of a TV-VCR combination having two tuners is disclosed which enables two channel simultaneous receiving for recording one channel and displaying another channel, or the same channel, and which is capable at the same time of switching the screen of monitor separately and independently providing increased convenience to users. The method includes the steps of scanning the state of key input using a microcomputer and displaying the key information on a digitron or display, thereby controlling respectively the TV tuner, VCR tuner and shifting switches. In response to the respective control signals for the tuners, a recording/playback signal, a VCR tuner/line input signal, a VCR-line/playback signal and a TV/VCR signal is generated by the microcomputer. The respective shifting switches are selectively connected for executing various functions including two channel simultaneous receiving for recording and displaying channels separately concurrently or independently. Two program simultaneous recording is enabled, and at the same time, monitoring of the TV or the VCR and line input can be selectively and voluntarily executed.

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patent: 4602297 (1986-07-01), Reese
patent: 4916532 (1990-04-01), Streck et al.
patent: 5047867 (1991-09-01), Strubbe et al.

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