JPS6238090A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To improve the operability by writing the station selecting information of a TV tuner and the information of an external input signal to a rewritable memory, and unifying the selection of the input signal to one system. CONSTITUTION:Each time an input signal selecting switch is pushed, the trigger pulse is sent to a writable memory 8. When 1ch-12ch are selected, the tuning voltage of respective channels written in the writable memory 8 beforehand and the information whether or not the channel is skipped are sent to a station selecting circuit 5. Simultaneously to this, a Hi signal to select the TV tuner is sent to a change-over circuit 3. The station selecting circuit 5 sends the tuning voltage to a tuner 1, the TV tuner signal of the hoped channel is selected, and the selected TV tuner signal enters a recording circuit system 4 through the change-over circuit 3. On the other hand, when the external input signal is selected by an input signal selecting switch 9, the information is not sent to the station selecting circuit 5, an L0 signal is sent to the change-over circuit 3, a video input signal 2 is selected and the signal is sent to the recording circuit system 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a VTR, and particularly to a magnetic recording and reproducing device suitable for input signal selection.

[Background of the invention]

Conventional VTRs are designed to switch between a W tuner signal, a video input signal, and an audio input signal, as described on page 150 of "Introduction to Home VTR" published by the Television Society of Japan. A conventional example regarding a video signal will be shown and explained below. As shown in Figure 1, the conventional ■1 is actually
The video input switch 7 selects a signal and inputs the signal to the recording circuit system 4.

Therefore, during timer recording, a control signal is sent from the timer 6, which allows program reservation, to the tuner channel selection circuit 5 to select the program to be recorded. However, the video input selector switch 7
When the video input is selected, even if a desired channel is selected by the tuner, only an external input signal is input to the recording circuit system 4, resulting in a problem that the desired program cannot be recorded.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic recording/reproducing device that selects an input signal with a simple operation.

[Summary of the invention]

The present invention improves operability by writing TV tuner selection information and external input signal information into a rewritable memory, making selection of input signals a single system.

[Embodiments of the 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 6 that switches between the signal of the W tuner 1 and the input signal of the video equipment 2, and a recording circuit system 4, and the control section that controls this includes a tuning circuit 5 and a rewritable memory. 8, an input signal selection switch 9, and a timer 6 that allows program reservations. The signal to be input to the recording circuit system 4 is selected using an input signal selection switch 9 consisting of two switches, up and down. Press the up switch of selection switch 9 to select 16J, 26A, 31J.
Select ・・・・・・ and press the down switch to 16L,
Select external input, 12cJ, 1jcJL...

Each time this input signal selection switch is pressed, a trigger pulse is sent to the writable memory 8. 1d to 12
If cJ is selected, the tuning voltage of each channel written in advance in the writable memory 8 and information on whether or not to skip channels are sent to the channel selection circuit 5. At the same time, the switching circuit 5
A Hi signal is sent to select the W tuner signal.

The tuning circuit 5 sends a tuning voltage to the tuner 1, and the W tuner signal of the desired channel is selected. Chosen W
The tuner signal enters the recording circuit system 4 via the switching circuit 6.

- When selecting an external input signal using the universal signal selection switch 9, the information is not sent to the channel selection circuit 5, the Lo signal is sent to the switching circuit 3, the video input signal 2 is selected, and the recording circuit system 4 send a signal to. Further, when a command to start recording is received from the recordable timer 6, channel information is similarly sent from the recordable timer 6 to the rewritable memory and the desired channel is recorded.

Since the input signal selection is unified in this way,
When you select 16JL of the W channel, the switching circuit automatically selects the W channel signal, which simplifies operation because there is no need to operate both the W channel selection switch and the video input selection switch as in the conventional case. 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. In other words, when selecting a channel with the up/down switch, press the down switch next to icj. When pressed, it becomes an external input, and when the switch is pressed further, it becomes 12u, which calls up unused external inputs, making the operation cumbersome. Therefore, information is written in a rewritable memory so that the external input signal is skipped when the external input signal is not used. Therefore, when selecting a channel with the input signal selection switch, the external input signal can be skipped, improving operability. Also, if you want to cancel all the information in the rewritable memory and write a new one, you can initialize the W tuner's reception channel to a specific channel and also call the external input signal, so that you can write the external input channels to the rewritable memory one by one. Since this is not necessary, operability is improved.

As described above, the present invention considers the external signal input as one of the channels, and provides the W channel channel jumping function for the external input signal in the same manner as the W channel, thereby improving operability.

〔Effect of the invention〕

According to the present invention, switching of input signals of a VTR can be selected using up/down buttons. Furthermore, it is possible to skip unused external input channels depending on the usage.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional VTR input signal switching circuit, and FIG. 2 is a block diagram of a VTR input signal switching circuit according to the present invention. 1...W tuner signal, 2...video input signal, 3
...Switching circuit, 4...Recording circuit system, 5...
- Channel selection circuit, 6... Timer that allows program reservations, 7... Video input selection switch, 8... Rewritable memory, 9... Input signal selection switch.

Claims (1)

[Claims] 1. A V equipped with a tuner that receives TV broadcasting, a tuning circuit thereof, a rewritable memory, and a switching circuit that switches between an external input signal and a tuner signal selected by the tuner.
In the TR, information about the tuner's receiving channels and external input signals is written in the rewritable memory, making it possible to sequentially select the tuner's receiving channels and external input signals, and making it possible to jump channels. Features of magnetic recording and reproducing device. 2. The magnetic recording according to claim 1, characterized in that when the writable memory is cleared, at least one receiving channel and two external input signal channels are called up. playback device.