JPS5827434Y2 - tuner - Google Patents

Description

[Detailed description of the invention] This invention relates to a magnetic recording and reproducing device with a tuner, and its purpose is to reduce the radio waves of television signals when operating a magnetic recording and reproducing device with a tuner that has a built-in distributor. The objective is to obtain a distributor that can obtain images of the same quality as those received by television only, without signal attenuation due to distribution by the distributor, even in weak areas.

Conventionally, a magnetic recording/reproducing device with a tuner with a built-in distributor was operated in areas where television signal radio waves were weak, and the signal was distributed by the built-in distributor, and the tuner of the magnetic recording/reproducing device was connected to the magnetic recording/reproducing device. When a signal is sent to John's tuner, the signal is attenuated by the distribution, and the image and sound quality deteriorates compared to the case without distribution.

In such a case, it is possible to take measures by providing two antennas to send signals to the tuner of the magnetic recording/reproducing device and the tuner of the television, respectively, but conventional splitters split the signal input into two or Since it only has the function of distributing more than that, the tuner of a magnetic recording/reproducing device has the disadvantage that only a signal attenuated by the distribution is sent, making it impossible to obtain a high-quality image.

This idea solves the conventional difficulties mentioned above.
An explanation will be given below according to the drawings shown as examples.

1 is a distributor with a through circuit, 2 is a distribution circuit, 3 is a tuner, and 4, 5.6 are switches built into the distributor 1, which are interlocked with each other.

The switches 4, 5, and 6 are all placed inside a shield plate in order to obtain signals with less noise, and the shield plate is constructed so that it can be used in common with the jack plate.

Reference numeral 7 denotes an output changeover switch for selecting an output terminal from the magnetic recording/reproducing device and an input signal from the antenna, and terminal E is connected to the antenna terminal board of the television.

A and F are terminals into which input signals of different antennas are input.

i and t respectively indicate the outside and the inside of the magnetic recording/reproducing device.

For general use in areas where radio waves are not weak, use terminal F.
The antenna that inputs the signal to terminal A is not used, and only the antenna that sends the signal to terminal A is used.

In this case, the antenna input signal sent to terminal A is
', enters the distributor 1, passes through the solid line side of switch 4, enters the distribution circuit 2 from terminal a, is divided into two, goes to terminals C and f, and passes through the solid line side of switch 5 or switch 6, which is linked to switch 4, and is distributed. The output signals reach the output changeover switch 7 or the tuner 3 via terminals B or C, respectively.

In areas where radio waves are weak, the interlocking switches 4, 5.6 are switched to the dotted line side.

The input signal from the antenna connected to terminal F is F-F'
-e -B-B'-E'-E, and the antenna input signal sent to terminal A is sent to tuner 3 via A-A'-b-d-C.

Therefore, both the signal sent to the tuner 3 and the signal connected to the television tuner are not attenuated due to distribution.

Since this device has the above-mentioned structure and function, the antenna input signal does not suffer from signal attenuation due to distribution, and even in areas where television signal radio waves are weak, clear images can be obtained without deterioration of image and sound quality. It has practical effects such as being able to perform various functions and having a simple configuration.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram when using a distributor with a through circuit. 1...Distributor, 4, 5, 6...Interlocked switch, A, B, C, D, E, F...Terminal.

Claims (1)

[Scope of utility model registration request] Two antenna input terminals, first and second, are provided, and the first and second antenna input terminals are provided.
Connect the antenna input terminal of the first changeover switch to the movable terminal of the first changeover switch, connect the first contact of the first changeover switch to the input terminal of the distributor, and connect the second contact to the second contact of the second changeover switch. one output terminal of the distributor is connected to the first contact of the second changeover switch, the other output terminal is connected to the first contact of the third changeover switch, and the second antenna input A terminal is connected to a second contact of the third changeover switch, a movable contact of the second changeover switch is connected to a tuner built in a magnetic recording/reproducing device, and a movable contact of the third changeover switch is connected to a tuner built in the magnetic recording/reproducing device. is connected to a first contact of an output selector switch, a second contact of this output selector switch is connected to a playback output terminal of a magnetic recording and reproducing device, and a movable contact of the output selector switch is connected to an antenna terminal of a television receiver. the first, second,
A magnetic recording/reproducing device with a tuner, characterized in that a third changeover switch can be switched in conjunction with each other.