KR900008167Y1 - Television apparatus - Google Patents

Abstract

No content.

Description

Stationary TV Receiver

1 is a schematic explanatory diagram showing a conventional example.

2 to 4 show an embodiment of the television receiver of the present invention,

2 is a schematic diagram showing a television receiver.

3 is a front view of a television receiver.

4 is a circuit diagram showing the main parts of the circuit.

Fig. 5 is a circuit diagram showing a modification in the input selection switching means of the television receiver of the present invention.

6 and 7 show another embodiment of the television receiver of the present invention, and FIG. 6 is a schematic illustration showing a television receiver.

7 is a circuit diagram showing the main parts of the circuit.

* Explanation of symbols for main parts of the drawings

1,1 TV receiver 2: Tuner

3,3 ', 5: Switching circuit for input selection 4,6: Portable external device

ANT: Antenna So: External Device Selector Switch

Sch, Suh: Tuning switch

The present invention relates to a novel stationary television receiver. In particular, a plurality of input terminals for receiving a high frequency signal are provided, and a new stationary type that can quickly switch and tune a type of the high frequency signal to be input by simple operation. It is to provide a television receiver.

In many television game machines, personal computers, and home video tape recorders, RF signals are output from the RF output terminal to the television receiver, and the video is drawn on the screen using the free channel of the television receiver.

By the way, conventionally, the problem that switching between a television receiver as a display of a portable external device in a television receiver such as a television game machine and when using it as a receiver for receiving original television broadcast is inconvenient. There was. This problem will be described based on FIG. 1 shown in the conventional case. That is, when a portable external device, for example, a television game machine (b) is connected to the television receiver (a), one of the switching terminals (c) of the switcher (c) is used by using the switcher (c) attached to the television game machine (b). d1) is connected to the high frequency signal output terminal of the television game machine b, an antenna e is connected to the other switching terminal d2, and the common terminal f is connected to the antenna connection terminal g of the television receiver. Connect to When watching a television broadcast program, the switching device c is switched to the switching terminal d2 side, and when playing a television game, the switching terminal d1 is switched to switch the high frequency signal input to the television receiver a. Is done. Since the switching device c is preferably placed close to the antenna connection terminal g of the television receiver a, it is often arranged behind the television receiver c.

Then, whenever switching between the state of watching a television program and the state of playing a television game is performed, the switch c on the rear side of the television receiver a must be operated by hand. In the case of playing a television game with the television game machine b, the empty channel of the television receiver a must be used, so the channel of the television receiver a must be switched to the empty channel. Therefore, switching between watching a broadcast program and playing a television game is relatively inconvenient.

Accordingly, it is an object of the present invention to provide a novel stationary television receiver capable of quickly switching and tuning a type of high frequency signal inputted with a plurality of input terminals receiving a high frequency signal by a simple operation.

The structure of the present invention for achieving the above object is portable at the rear side of the cabinet, the antenna connection terminal to which the high frequency signal is input from the antenna for receiving the television broadcast signal, and the front panel surrounding the CRT display surface. A plurality of external device connection terminals including at least an input terminal to which a high frequency signal of an empty channel of a television broadcasting frequency band including modulated waves of a video signal output from an external device is input; and one of the plurality of external device connection terminals A stationary television with at least an input selection switching circuit for selecting and transmitting a high frequency signal from the terminal to the tuner, and an external device selection switch disposed on the front panel of the cabinet to select a high frequency signal output from the portable external device. In the receiver, the external device selection switch and the normal television If the selection switch for selecting a broadcast is selected by one operation with each other, the selection is canceled by the other, and when one television broadcast is selected by the operation of the tuning switch, the input selection switching is performed. The circuit is automatically selected to select an antenna connection terminal to which a high frequency signal from the antenna is input, and the tuner is tuned to the selected television broadcast, and a portable external device is operated by operating the external device selection switch. When a device is selected, the input selection switching circuit automatically selects an external device connection terminal to which a high frequency signal of an empty channel of a television broadcasting frequency band including a modulated wave of a video signal from the selected portable external device is input. State and the tuner Block is characterized in that formed so as to be tuned to a high frequency signal from the external device.

Example 1

Next, the present invention will be described in detail based on the embodiment shown in the accompanying drawings.

2 to 4 show one embodiment of the television receiver of the present invention, in which: (1) is a television receiver, (2) is a tuner inside the television receiver (1), and (3) is an input selection. And a switching circuit for selecting one of the antenna connection terminal Ta and the external device connection terminal To and connecting it to the input terminal of the tuner 2. This external device connection terminal To is provided on the front panel of the television receiver 1, and is connected to a high frequency signal output terminal of a portable external device such as a television game machine 4 or the like. On the front panel of the television receiver 1, a station selector switch (Sch1)-(Sch12) for tuning a power switch (PS), a station for VHF broadcasting, and a specific station for UHF broadcasting, in addition to an external device connection terminal (To). A switch (Suh), an external device selection switch (So), and a sound controller (VR) are provided.

4 is a circuit diagram showing a circuit configuration of an input side of a tuner for switching the reception frequency signal of the television receiver of the present invention. In this figure, (FSR1), (FSR2),... … … (FSRo) is a variable resistor for presetting the tuning frequency, and is connected in parallel with each other, and receives a predetermined value, for example, a voltage of 33V, and generates a receive frequency control voltage Vc separately. These variable resistors FSR1, FSR2,... … … The reception frequency control voltage Vc generated by (FSRo) corresponds to the corresponding switches Sch1, (Sch2),... Of the variable resistors FSR. … … Through So, it is applied to the reception frequency control voltage input terminal (not shown) of the tuner 2, and each of the switches Sch1, Sch2,... … … Inside the So, selectable display neon tubes NE1, NE2, ..., respectively. … … (NEo) is excreted. NS1, NS2,... … … (NSo) indicates this selection display neon tubes (NE1), (NE2),... … … A switch for turning ON / OFF of (NEo), and switches (Sch1), (Sch2),... … … In conjunction with (So), the switches (Sch1), (Sch2),... … … When (So) is pressed, it acts to light up the neon tube (NE) corresponding to it.

(BS1), (BS2),... … … (BSo) is a band switching switch that performs band switching between three channels of the low channel of the VHF broadcast, and also the high channel and the UHF broadcast.

The tuning switches Sch1, Sch2,... … … (Sch12), (Sch), and external device selector switch (So) (but FIG. 4 shows only Sch1, (Sch2), and (So) and related things for convenience) in the state that two or more are turned on at the same time. When one of them is turned on, the other switch that has been kept on until then is automatically turned off. For example, when the tuning switch Sch1 is pressed to receive the broadcast of the first channel, only the tuning switch Sch1 remains on, and the variable resistor FSR1 receives the received frequency control voltage corresponding to the first channel. Vc) (preset by adjustment of the variable resistor FSR1) is input to the receive frequency control voltage input terminal (not shown) of the tuner 2. The same applies to selecting another channel. When the external device selection switch So is pressed, the reception frequency control voltage Vc set by the control of the variable resistor RSRo corresponding thereto is sent to the tuner 2. The reception frequency control voltage Vc is a portable external device connected to the television receiver 1 (in this example, a high frequency signal output from the television game machine 4 (an empty channel of the television receiver 1 varies depending on the region. For example, it is necessary to set the channel according to the second channel) to a value that can be received.

The input selection switch circuit 3 includes tuning switches Sch1, Sch2,... … And the selected contents are switched in accordance with the operation contents of the external device selection switch So. Namely, in this embodiment, the tuning switches Sch1, Sch2,... … … When any one of them is turned on, the input selection switching circuit 3 transmits a high frequency signal from the antenna connection terminal Ta to the tuner 2, and the external device selection switch So is turned on. When the input selection switching circuit 3 is in the state, the high frequency signal from the external device connection terminal To is transmitted to the tuner 2. When the external device selection switch So is in the on state, The input selection switching circuit 3 is in a state of transmitting a high frequency signal from the external device connection terminal To to the tuner 2.

Incidentally, (C1) and (C2) are insulation capacitors in the case of a hot chassis, and may be provided one for each switching terminal.

Then, if the external terminal connection terminal To of the television receiver 1 is connected to the output terminal of the portable external apparatus, for example, the television game machine 4, the television is simply pressed by simply pressing the external device selection switch So. You can play the game. That is, when the television receiver 1 receives a certain television broadcast, the external device selection switch So1 is pressed as follows.

That is, when the television receiver 1 is receiving a certain television broadcast, for example, a first channel, the tuning switch Sch1 is turned on. The tuner 2 has a variable resistor FSR1 as a reception frequency control voltage. The control voltage Vc from) is applied. In addition, the input selection switching circuit 3 is in a switching state in which a high frequency signal from the antenna connection terminal Ta is transmitted to the tuner 2. In this state, when the external device selection switch So is pressed, this switch So is turned on, and the tuning switch Sch1, which was on until then, is turned off. Then, the variable frequency resistor FSRo transmits the reception frequency control voltage Vc for tuning to one empty channel (for example, the second channel) to the tuner 2, and the tuner 2 is tuned to two channels. It becomes At the same time, the input selection switching circuit 3 transmits a signal from the external device connection terminal To to the tuner 2 while transmitting a signal from the antenna connection terminal Ta to the tuner 2. The high frequency signal of the second channel output from the external device 4 is input to the tuner 2, and is tuned therein so that the television receiver 1 functions as a display of the television game machine 4.

Further, when the television receiver 1 is functioning as a display of the television game machine 4, pressing one of the tuning switches Sch1 to Sch12 and Suh will naturally receive the television broadcast designated by the pressed tuning switch. The state is changed.

As described above, according to the television receiver 1, a state in which a television broadcast is received from a state in which a television broadcast is received and a state in which a function of a display of an external device is switched or vice versa. Switching to can be performed easily by only one switch operation.

5 shows a modification of the input selection switching means of the television receiver of the present invention, where 3 'is a switching circuit for input selection.

In the above embodiment, a simple switch is used for the input selection switching circuit 3 as the input selection switching means, but a high frequency relay may be used.

The modification shown in Fig. 5 is made by using the high frequency relay RL in the input selection switching circuit. In the figure, (SW) denotes a tuning switch (Sch1), (Sch2),... … … When any one of (Suh) is in the on state, it is maintained in the off state, and when the external device selector switch (So) is in the on state, it is a switch that is linked with these switches. Excitation current is supplied to the high frequency relay RL. When the high frequency relay RL is in the non-excited state, as shown in the solid line of FIG. 5, the common terminal a is connected to the switching terminal b. When the high frequency relay RL is excited, as shown by the dashed-dotted line in this figure. The common terminal a is set to be connected to the switching terminal c. The common terminal a is connected to the tuner's high frequency signal input terminal, the switching terminal b is connected to the antenna connection terminal Ta, and the switching terminal c is connected to the external device connecting terminal To. .

Therefore, when receiving the television broadcast, any one of the tuning switches Sch1-Sch12 and Suh is pressed and turned on. At that time, the switch SW of the input selection switching circuit 3 'is turned off. It is a state. Therefore, the high frequency relay RL is kept in the non-excited state, and the television broadcast signal from the antenna is input to the tuner through the antenna connection terminal Ta.

When the external device selection switch So is pressed, the switch SW in the input selection switching circuit 3 'is turned on so that the high frequency relay RL is excited, and the tuner 2 has a television game machine ( The high frequency signal from 4) is input. (D) is a diode for reverse pulse absorption connected in parallel to the high frequency relay (RL), (LED) is a light emitting diode (R) indicating that an external device is selected, and a current flowing through the light emitting diode (LED). It is resistance to regulate.

Example 2

6 and 7 show a second embodiment of the television receiver of the present invention, where 1 'is a television receiver. In this embodiment, three external device connection terminals are provided, and one of the four high frequency signal input terminals of the three external connection terminals and the antenna connection terminal is selected by the input selection switching circuit, and the high frequency signal input of the tuner is selected. It is intended to be electrically connected to the terminal.

In this embodiment, not one external device selector switch So is the same as the first embodiment shown in FIGS. 2 to 4, but three (So1) to (So3) are provided. The three external device selector switches So1 to So3 are arranged on the front panel so that they can be operated from the front of the television receiver 1 '. In addition, three external connection terminals (So1) to (So3) are provided with one of them (So1) on the front panel, and the other two (So2) and (So3) are the same as the antenna connection terminal (Ta). It is arrange | positioned at the back of the television receiver 1 '. Each of the external connection terminals So1 to So3 and the antenna connection terminal Ta is connected to an input selection switching circuit 5, and the input selection switching circuit 5 is an external connection terminal So1. One of -So3 and the antenna connection terminal Ta is electrically connected to the high frequency signal input terminal of the tuner 2. The input selection switching circuit 5 tunes the antenna connection terminal Ta to the tuner 2 when normal television broadcasting is tuned by one of the channel selection switches Suh1 through Suh12 and Suh. When one of the external device selection switches So1 to So3 is pressed, the external device connection terminal To corresponding thereto is connected to the tuner 2.

Each external device selector switch So1-So3 sends the tuner 2 a reception frequency control voltage Vc generated by the variable resistors FSRo1-FSRo3 provided correspondingly.

The television receiver 1 'is not only suitable for playing a television game by connecting a television game machine 4, which is a portable external device, but also receiving television broadcast waves through an anti-ghost antenna, or by satellite. It is also suitable for receiving the radio wave from the TV, and it is possible to switch the switching of the input received by the television receiver 1 'very quickly.

That is, for example, the television game machine 4 is connected to the external device connection terminal To1 of the front panel of the television receiver 1 'as in the case of the embodiment shown in FIGS. A normal television reception antenna ANT is connected to the connection terminal Ta.

Since a ghost is generated because the reception state by the antenna ANT of a specific channel, for example, the fourth channel is bad, the antenna GANT dedicated to the reception of the specific channel, that is, the fourth channel, is provided. The antenna GANT is connected to a second external device connection terminal To2, for example. In addition, for example, when a satellite receiver can be received by a television receiver in the future, the antenna for satellite communication reception (eg, through the converter 6 which is a portable external device) is connected to the third connection terminal To3 ( PANT). This converter 6 converts the signal from the satellite so that video and audio can be reproduced using any one empty channel (for example, the second channel).

Then, the variable resistors FSR for receiving frequency setting, in particular, the variable resistors FSRo1-FSRo3 corresponding to the respective external device selector switches So1-So3, are set appropriately. That is, the variable resistor FSRo1 is tuned so that the tuner 2 is tuned to a channel (for example, a second channel) of a high frequency signal output from the TV game machine 4, and (FSRo2) is a channel where ghost is generated (eg, For example, in this example, the fourth channel is adjusted, and (FSRo3) is adjusted to the channel (for example, the second channel) in which satellite communication broadcast is converted by the converter 6.

In this way, the input can be switched very simply by the simple operation of the switches Sch1-(Sch12), (Suh), (So1)-(So3) as in the case of the examples shown in FIGS. Can be.

As described above, the television receiver of the present invention is disposed on the rear side of the cabinet and is installed on the antenna connection terminal to receive a high frequency signal from an antenna for receiving a general television broadcast, and on the cabinet front panel surrounding the CRT display surface. A plurality of external device connection terminals including at least an input terminal to which a high frequency signal of an empty channel of a television broadcasting frequency band including a modulated wave of a video signal outputted from A stationary television receiver having at least an input selection switching circuit for transmitting a high frequency signal from the terminal to a tuner and an external device selection switch arranged on the front panel of the cabinet to select a high frequency signal output from the portable external device. The external device selection switch and the normal television When the selection switch for selecting a song is selected by the operation of one of them, the selection by the other side is canceled, and when one television broadcast is selected by the operation of the selection switch, the input selection is performed. The switching circuit automatically selects an antenna connection terminal to which a high frequency signal from the antenna is input, and at the same time the tuner is tuned to the selected television broadcast, and is operated by operation of the external device selection switch. When an external device is selected, the input selection switching circuit automatically inputs an external device connection terminal to which a high frequency signal of an empty channel of a television broadcasting frequency band including a modulated wave of a video signal from the portable external device for selection is input. Selector, and the tuner Block is characterized in that formed so as to be tuned to a high frequency signal from the external device. Therefore, it is possible to provide a novel stationary television receiver having a plurality of input terminals receiving high frequency signals, which can quickly switch and tune the type of high frequency signals input by simple operation.

Claims (1)

A portable external device (4, 4) is provided on the cabinet front panel enclosing the antenna connection terminal Ta and high frequency signal from the antenna ANT, which is disposed at the rear side of the cabinet and receives the normal television broadcast signal, and the CRT display surface. A plurality of external device connection terminals (To, To1, To2, To3) including at least an input terminal to which a high frequency signal of an empty channel of a television broadcasting frequency band including a modulated wave of a video signal output from 6) is input; Input selection switching circuits (3, 3 ', 5) for selecting one from a plurality of external device connection terminals (To, To1, To2, To3) and transmitting a high frequency signal from the terminal to the tuner (2); A stationary television set provided at least with an external device selector switch (So) disposed on the front face of a cabinet to select a high frequency signal output from the portable external device (4, 6), wherein the external device selector switch (So) is normally used. Tell When the selection switch (Sch, Suh) selects the LBA front, the selection by the operation of one side is made to cancel the selection by the other side, and one television by the operation of the selection switch (Sch, Suh) When the broadcast is selected, the input selection switching circuits 3, 3 'and 5 automatically select the antenna connection terminal Ta to which a high frequency signal from the antenna ANT is input. (2) is tuned to the selected television broadcast, and when one portable external device (4, 6) is selected by operation of the external device selection switch (So), the input selection switching circuit (3, 3). ', 5) automatically connects an external device to which a high frequency signal of an empty channel of a television broadcasting frequency band including a modulated wave of a video signal from the selected portable external device 4 or 6 is input. A stationary television receiver, characterized in that the children (To, To1, To2, To3) are selected and the tuner (2) can be tuned to a high frequency signal from the portable external device (4, 6). .