JPH0740730B2 - Magnetic recording / reproducing device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a VTR, and more particularly to a magnetic recording / reproducing apparatus suitable for input signal selection.

[Background of the Invention]

The conventional VTR is the first in "Introduction to Home VTR" edited by the Television Society.
As described on page 150, the TV tuner signal, video input signal, and audio input signal were switched. Hereinafter, a conventional example will be described with reference to a video signal. As shown in FIG. 1, a conventional VTR is composed of a switching circuit 3 for switching a signal of a TV tuner 1 and a video input signal from a video device 2 such as a video camera. The signal was selected and input to the recording circuit system 4. Therefore, at the time of timer recording, the control signal from the timer 6 capable of making a program reservation is the tuner tuning circuit 5
Had selected a program to be sent to and recorded. However, if the video input selector switch 7 is set to select the video input, even if the desired channel is selected by the tuner, only the external input signal is input to the recording circuit system 4, and the program to be recorded cannot be recorded. There was a problem.

[Object of the Invention]

An object of the present invention is to provide a magnetic recording / playback apparatus which selects an input signal by a simple operation.

[Outline of Invention]

The present invention is to write the tuning information of the TV tuner and the information of the external input signal in a rewritable memory to make the selection of the input signal one system and improve the operability.

Example of Invention

An embodiment of the present invention will be described below with reference to FIG. The input signal switching circuit is composed of a switching circuit 3 for switching the signal of the TV tuner 1 and an input signal of the video equipment 2 and a recording circuit system 4. The control unit for controlling this is a channel selection circuit 5 and a rewritable memory. 8 and an input signal selection switch 9 and a timer 6 capable of making a program reservation. A signal input to the recording circuit system 4 is selected by an input signal selection switch 9 including two switches, an up switch and a down switch. Pressing the up switch of the selection switch 9 selects 1ch, 2ch, 3ch ..., and pressing the down switch selects 1ch, external input, 12ch, 11ch ...
Select.

Each time the input signal selection switch is pressed, a trigger pulse is sent to the writable memory 8. 1ch to 12ch
When is selected, the tuning voltage of each channel, which is written in the writable memory 8 in advance, and the information as to whether or not the channel is skipped are sent to the channel selection circuit 5. At the same time, a Hi signal for selecting the TV tuner signal is sent to the switching circuit 3. The tuning circuit 5 sends a tuning voltage to the tuner 1 to select the TV tuner signal of the desired channel. The selected TV tuner signal enters the recording circuit system 4 via the switching circuit 3. On the other hand, when an external input signal is selected by the input signal selection switch 9, no information is sent to the channel selection circuit 5, the L ₀ signal is sent to the switching circuit 3, the video input signal 2 is selected, and the recording circuit system 4 is selected. Send a signal to. Also, when a recording-enabled command is received from the recording-capable timer 6, channel information is similarly sent from the recording-capable timer 6 to a rewritable memory to record a desired channel.

In this way, since the selection of input signals is one system,
When 1 channel of TV channel is selected, the switching circuit automatically selects the TV channel signal, and it is not necessary to operate both the TV channel selection switch and the video input selection switch as in the past, so the operation is simple. However, for users who do not need an external input signal, there is always a place to select the external input signal by pressing the input signal selection switch 9, that is, when selecting a channel with the up / down switch, press the down switch after 1ch. It becomes an external input, and when you press the switch further, it becomes 12ch and the external input that is not used is called up and the operation is troublesome. Therefore, when the external input signal is not used, information is written in a rewritable memory so that the external input signal is skipped. Therefore, when selecting a channel with the input signal selection switch, an external input signal can be skipped and operability is improved. Also, if all the information in the rewritable memory is canceled and newly written, the channel for external input is also written to the rewritable memory by initializing to a specific channel of the receiving channel of the TV tuner and calling the external input signal Operability is improved because it is not necessary. As described above, the present invention considers the external signal input as one of the channels, and provides the channel skip function of the TV channel to the external input signal like the TV channel to improve the operability.

〔The invention's effect〕

According to the present invention, the VTR can be selected by the button whose input signal is switched up or down. Furthermore, depending on the usage, you can skip unused external input channels.

[Brief description of drawings]

FIG. 1 is a block diagram of a conventional VTR input signal switching circuit,
FIG. 2 is a block diagram of the input signal switching circuit of the VTR according to the present invention. 1 ... TV tuner signal, 2 ... video input signal, 3 ... switching circuit, 4 ... recording circuit system, 5 ... channel selection circuit, 6 ... program reservable timer, 7 ... video input selector switch , 8 ... Rewritable memory, 9 ... Input signal selection switch.

Claims (1)

[Claims] 1. A tuner for receiving a TV broadcast, a rewritable memory for writing selection information corresponding to a receiving channel and an external input signal receivable by the tuner, and the rewritable for each operation. A single selection switch for reading the selection information for the reception channel and the external input signal written in the memory in order from a memory, and the selection information corresponding to the reception channel is read from the rewritable memory. A switching circuit for selecting the signal from the tuner when the selection information is output, and selecting the external input signal when the selection information corresponding to the external input signal is read from the rewritable memory; When the selection information corresponding to the reception channel is read out from another memory, the tuner is used for the read selection information. A channel selection circuit for setting a channel reception state, and the rewritable memory is provided with interlacing instruction information for instructing to skip reading of predetermined selection information among the already written selection information. Writing is also possible, and when the selection switches are sequentially operated, the switching circuit skips and selects a reception channel or an external input signal for the selection information indicated by the jump instruction information. Playback device.