JPS6112633Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a recording/reproducing device, which records an index signal on a recording medium, and reproduces the index signal to switch channels of a tuner, so that programs on different channels can be automatically played using a simple circuit configuration. The purpose of the present invention is to provide a device that can record information in a timely manner.

Conventionally, for example, home magnetic recording and playback devices (hereinafter referred to as
A TV program is recorded at a specified time by combining a VTR (VTR), a television receiver, and a timer. However, this thing is
In general, television channels can only record programs from one channel, and cannot sequentially record programs from different stations at multiple designated times.

Therefore, in order to satisfy this requirement, conventionally, a microcomputer or other non-volatile memory is used to set a plurality of programs in advance, and the channels of the television tuner are switched according to the signals. Although there is a device, it has the disadvantage that it is extremely expensive and unsuitable for ordinary households.

The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings.

FIG. 1 shows a block system diagram of an embodiment of the recording/reproducing apparatus according to the present invention. In the same figure, VTR
Loading the magnetic tape 2 at a predetermined position of 1,
Before recording, the tape 2 is first run in, for example, fast-forward mode, and the tape counter 3 checks the tape running amount (running time), and when the tape 2 has run to the desired channel switching time, the running of the tape 2 is stopped. . Next, an index signal of a predetermined code is supplied from the index signal generating circuit 4 to the index head 5 and recorded on the control track of the tape 2.

Next, the tape 2 is rewound, the power-on time is set using a microphone, etc., and automatic recording is started. At a predetermined time, the VTR 1, channel control circuit 6, and television electronic tuning tuner 7 are powered on, and the tape 2 is run. In this case, the second
As shown in the figure, the automatic changeover switch SW ₁ of the channel control circuit 6 is connected to contact a, the channel selection switch SW _A corresponding to channel A is closed, and the channel selection switch SW 1 corresponding to channels B and C is closed. _B and SW _C are open, the tuning voltage of channel A set by variable resistor VR _A is applied to tuner 7, and the program signal of the broadcasting station of channel A is transmitted to VTR1.
The video signal is supplied to the video head 8 and recorded on the tape 2.

The index signal recorded on the control track of the tape 2 is reproduced by the head 5 and supplied to the control circuit 6, which connects the contact piece of the switch _SW1 to the contact point b. As a result, the channel B tuning voltage set by the variable resistor VR _B corresponding to channel B is applied to the tuner 7, and the channel B program signal is recorded on tape 2 following the channel A program signal. be done.

In addition, if combined with an interval timer and configured to stop tape running after recording a program on one channel, then run the tape again at a predetermined time and play back the index signal to switch channels, it is possible to record programs on multiple different channels. To easily automatically record programs desired to be recorded on channels even if they are separated in time.

In addition, in FIG. 2, switch circuits similar to automatic changeover switch SW ₁ are connected to channel selection switches SW _A , _{SW C ,} SW _D , . It is also possible to record index signals corresponding to each channel of a different code, and to operate a corresponding channel selection switch in accordance with these index signals to switch channels as appropriate.

Furthermore, the present invention is not limited to VTRs, but can be similarly applied to audio tape recorders and video disc playback devices using magnetic or optical detection methods.

As described above, the recording/reproducing apparatus according to the present invention records an index signal at a desired position on a recording medium,
Since it consists of a reproduction circuit and a circuit that switches the tuner channel according to the index signal reproduced by this circuit, it is possible to automatically record programs from a plurality of different broadcasting stations on one recording medium.
Since it does not use devices such as a microcomputer, it can be constructed at an extremely low cost, and by combining it with a conventional device that records and reproduces index signals to locate the beginning of a song, it is possible to generate index signals of different codes. It has the advantage that it is convenient to record the information and switch the tuner channel accordingly.

[Brief explanation of the drawing]

FIG. 1 is a block system diagram of an embodiment of the recording/reproducing apparatus according to the present invention, and FIG. 2 is a specific circuit diagram of the channel control circuit shown in FIG. 1... VTR, 2... Magnetic tape, 3... Tape counter, 4... Index signal generation circuit,
5... Index head, 6... Channel control circuit, 7... Television electronic tuning tuner, 8... Video head, SW ₁ ... Automatic changeover switch, SW _A , SW _B ... Channel selection switch, VR _A , VR _B , ...variable resistor.

Claims (1)

[Scope of utility model registration request] A recording and reproducing apparatus that records an output signal of a tuner on a recording medium and reproduces the same includes a circuit that records and reproduces an index signal at a desired position on the recording medium, and the index signal reproduced by the circuit. A recording/reproducing device comprising a circuit for switching channels of the tuner.