JPS6347118Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a television pay viewing system used in hotels, inns, etc.

Conventionally, in the TV remote control pay-viewing system, a broadcasting device such as a video tape recorder supplies television signals to a public listening line using an empty channel, and from this communal line, multiple television receivers transmit television signals on the empty channel. A device is known in which each signal can be received for a fee using a coin timer. However, with this television pay viewing system, even empty channels that receive weak television signals cannot be used, so there are only a few available air channels.

An object of the present invention is to improve the above-mentioned drawbacks and provide a pay-per-view television system that can utilize more empty channels.

The present invention will be described below by way of examples with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. This embodiment is installed in hotels, inns, etc., where television radio waves are received by an antenna 11 and sent to a branching filter 12.
The signal is divided into the low frequency side of the first channel to the third channel and the high frequency side of the fourth channel and above. Here, the first channel to the third channel, the ninth channel, etc. are empty channels, and the low frequency side signal from the duplexer 12 is sent to the frequency converter 1.
3, the frequency is converted into an empty frequency signal, and for example, the signals of the first to third channels become signals of the fifth, ninth, and 11th channels. The frequency converter 13 is for removing signals from the first channel to the third channel, and may be an attenuator or the like. The television signal on the high frequency side from the splitter 12 is transferred to a frequency converter 13.
is mixed with the output of the mixer 14. On the other hand, video signals from broadcasting devices 15 and 16 consisting of video tape recorders are modulated by modulators 17 and 18 to become television signals of the second and third channels, and mixed with the output signals of the mixer 14 by a mixer 19. The mixed signals are amplified by an amplifier 20 and supplied to a common listening line 21. multiple television receivers 22 ₁ ,
22 ₂ , 22 ₃ ... are installed in each room, and each coin timer 23 ₁ , 23 ₂ , 23 ₃ ...
is fixed in one piece, and this coin timer 2
3 ₁ , 23 ₂ , 23 ₃ . . . are connected to the common listening line 21. Television receiver 22 ₁ , 22 ₂ , 2
2 ₃ ... can each receive general television signals from antenna 11 free of charge, but modulator 1
Television signals from 7 and 18 can be received for a fee using coin timers 23 ₁ , 23 ₂ , 23 ₃ .

Figure 2 shows the coin timer ₂₃₁ .
The other coin timers 23 ₂ , 23 ₃ . . . are similarly configured. The television signal from the common listening line 21 is split by a branching filter 24 into low frequency sides of the first to third channels and high frequency sides of the fourth channel and above. The television signal on the low frequency side from the splitter 24 passes through the switch circuit 25 to the mixer 2.
At step 6, the signal is mixed with the high-frequency television signal from the duplexer 24 and supplied to the television receiver _22.sub.1 . Normally, the input from the product AC power supply 27 is
It is converted into direct current by the AC/DC converter 28 and supplied to the oscillator 30 via the coin switch 29 which is in an off state. Therefore, the oscillator 30 oscillates, and its output causes the switch circuit 25 to intermittent the low frequency television signal from the splitter 24, and the television receiver ₂₃₁ selects the second channel and the third channel. However, the screen and audio become distorted and become unwatchable. The coin switch 29 is a well-known device that is turned on for a certain period of time when a predetermined coin is inserted by a device (not shown). When the coin switch 29 is turned on, the oscillator 30 stops and the switch circuit 25 switches between AC/DC.
The converter 28 becomes conductive due to its output, and the low frequency television signal from the duplexer 24 passes through the switch circuit 25 as it is. Therefore, the television receiver 23 ₁ is in a state where the television signals of the second channel and the third channel can be viewed.

In the above embodiment, a coin timer was used as the billing means, but the second and third channels may be viewed in each room by operating a push button switch, etc., and billing may be done at the front desk. Also, you may be charged a fee to receive all channels.

As described above, according to the present invention, the input of the empty channel input from the antenna to the communal listening line is removed, and the television signal using the empty channel is supplied from the broadcasting equipment to the communal listening line. It can also be used on the air channels where television radio waves arrive, making it possible to use more air channels.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a block diagram showing the coin timer of the same embodiment. 12... Duplexer, 13... Frequency converter, 14
...Mixer.

Claims (1)

[Scope of utility model registration request] an antenna for receiving television radio waves; a public listening line to which television signals are supplied from the antenna; a plurality of television receivers to which television signals are supplied from the communal listening line; means for removing the input of a predetermined empty channel input from an antenna; a broadcasting device that supplies a television signal using the predetermined empty channel to the public listening line; and a means for removing the input of the predetermined empty channel in the television receiver. A television pay viewing system comprising a charging means for charging for reception of television signals.