KR950007155Y1 - Jack terminal for changing output in television - Google Patents

Abstract

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Description

Jack terminal for variable output on TV

1A is a block diagram for explaining a monitor output function of a conventional TV. b is a block diagram for explaining the TV output function of the conventional TV, c is a block diagram for explaining the A / V output function of the conventional TV.

Figure 2 is a block diagram illustrating a jack terminal for variable output of the TV according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: antenna 2: detector

3: first A / V input stage 4: first switching stage

5: TV circuit 6: Monitor output

7: TV output terminal 8: A / V output terminal

20: second A / V input terminal 30: microcomputer control unit

40: first switching stage 50: variable A / V output stage

60: monitor

The present invention relates to a jack terminal for outputting a TV. In particular, by adding a switching circuit to a set of video / audio output terminals, a variable TV can be easily selected as required by the user. It relates to a jack terminal for output.

Conventional TV output terminals have only one function, such as TV out, monitor out, video I, II out, and so on, so that they cannot be used organically. there was.

The prior art will be described with reference to the attached FIG. 1.

FIG. 1 (a) is a block diagram for explaining a monitor output function of a conventional TV. In FIG. 1, reference numeral 1 denotes a conventional TV antenna, and 2 denotes a video / audio signal input through the antenna 1. Detecting unit for detecting, 3 is the A / V input terminal for applying the video / audio signal applied from an external A / V device (not shown) to the switching stage 4 to be described later, 4 is the detector 2 A switching stage that receives a video / audio signal output from the A / V input terminal 3 and a video / audio signal output from the A / V input terminal 3 and performs a switching operation according to a control command of a microcomputer (not shown) according to a user's selection. to be.

At this time, the switching stage 4 is switched to the video / audio signal output from the detector 2 when the user wants to watch the video / audio signal (TV signal) transmitted from the broadcasting station through an external monitor and A / If the user wants to watch the video / audio signal output from the V device, the video / audio signal output from the A / V input terminal 3 is switched.

Also, reference numeral 5 denotes a TV circuit stage for processing a video / audio signal output from the switching stage 4 so that a user can take it out, and 6 denotes a TV screen for connection with an external monitor (not shown). This is a monitor output terminal as a connection terminal to which the signal output from the signal, i.e., the video / audio signal output from the switching stage 4, is output.

In the above configuration, the video / audio signal being watched through the screen on the TV is output to the monitor connected to the outside.

FIG. 1 (b) is a block diagram for explaining a TV output function of a conventional TV, and the same reference numerals will be omitted for elements having the same function as in FIG.

In the figure, reference numeral 7 denotes a TV output terminal as a connection terminal for outputting a video / audio signal corresponding to a broadcast signal output from the detector 2 for connection with an external monitor.

In the above arrangement, regardless of the video / audio signal being output to the TV screen, the monitor connected to the outside always outputs the TV broadcast signal transmitted from the broadcasting station and detected and output from the detector 2.

(C) of FIG. 1 is a block diagram for explaining the A / V output function of a conventional TV, and the same reference numerals are assigned to the components that perform the same functions as those of (a) and (b) of FIG. 1 described above. And other detailed description thereof will be omitted.

In the figure, reference numeral 8 denotes an A / V output terminal as a connecting means for outputting a video / audio signal output from the A / V input terminal 3 for connection with an external monitor.

In the above configuration, the video / audio signal of the external A / V device output from the A / V input terminal 3 is always output to the monitor connected to the outside regardless of the video / audio signal output on the TV screen. Lose.

As described above, in a conventional conventional TV receiver, an output jack terminal for connection with an external monitor of a TV receiver is fixed and manufactured by one of several functions described above, and then shipped. There was a problem that can not use other functions except the output function.

In addition, even in an advanced TV receiver capable of performing all the above functions, the circuit configuration of the TV and the jack terminal are not only complicated, but each time the output function desired to be used by the user is changed, the TV is turned and installed at the rear end thereof. Among the many jacks, there was a hassle of inserting the jack into the connection terminal for the user's purpose and then installing the TV again.

Accordingly, the present invention has been made in view of the above circumstances, and has a second switching stage for performing a switching operation based on a control signal output from the control means, and is variable in a single connection terminal for connection with an external monitor. Accordingly, an object of the present invention is to provide a jack terminal for variable output of a TV capable of outputting a video / audio signal of a TV broadcast or a video / audio signal of an external A / V device.

Jack terminal for variable output of the TV according to the present invention for realizing the above object is to perform the control of the overall device and to apply a predetermined control signal to the first switching stage to be described later, and the image / transmitted from the broadcasting station / A detector for detecting an audio signal, an A / V device input terminal for applying a video / audio signal output from an external A / V device to a first switching terminal to be described later, a video / audio signal output from the detector and the A In the output jack terminal of the TV having a first switching means for performing a switching operation based on the control signal output from the microcomputer and the video / audio signal output from the / V device input terminal, A microcomputer control unit for outputting a predetermined control signal to a second switching stage, which will be described later, according to an output function selected by the user; The video / audio signal output from the wave unit, the video / audio signal output from the A / V input terminal, and the video / audio signal output from the first switching terminal are applied to receive a predetermined control signal output from the micom controller. A second switching stage for performing a switching operation on the basis of the switching, and a variable A for outputting a video / audio signal selected by a user as a connecting means to the external monitor and switched and output from the second switching stage to the external monitor; It characterized in that it comprises a V output terminal.

According to the present invention having the above-described configuration, by outputting the video / audio signal variably according to the user's selection with only one connection terminal, it is easy to convert the video / audio signal output from the TV to the external monitor as needed by the user can do.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram illustrating a variable output jack terminal of a TV according to an embodiment of the present invention, and the same reference numerals are assigned to components having the same function as the first embodiment, and detailed description thereof will be omitted. Shall be.

In the figure, reference numeral 10 denotes a microcomputer as control means for applying a predetermined control signal to the first switching stage depending on whether the user selects to watch a TV broadcast signal or a signal output from an external AV device. 20 is a second A / V input terminal for applying the video / audio signal output from the second A / V device to the first switching terminal, and 30 is an output of the connection terminal when the user connects an external monitor to the TV according to the purpose. The microcomputer control unit as a control means for applying a predetermined control signal to the second switching stage 40 to be described later depending on whether a function is selected, 40 is a signal output from the detector 2 and the first switching stage 40. ), A signal output from the first A / V input terminal 3, and a signal output from the second A / V input terminal 20 are respectively applied to the signal according to the user's selection. By a control signal which is outputted from the controller 30 on the basis of a second switching stage for performing a switching operation.

In addition, reference numeral 50 denotes a variable A / V output terminal as a connection means for receiving and outputting a video / audio signal of a specific function that is switched and output from the second switching stage 40 to connect to an external monitor. The external monitor is connected to the TV via the variable A / V output terminal 50.

On the other hand, the operation of the present invention having the above configuration will be described in detail with reference to <Table 1>.

TABLE 1

In the first case, when the user selects the broadcast signal output function to output the TV broadcast signal to the external monitor 60, the control signal, that is, the low / low signal is output from the micom control unit 30 to the second switching stage 40. The second switching stage 40 switches the signal output from the detector 2 and applied to the second switching stage 40 among the signals applied based on the control signal. Is output to the external monitor 60 through the variable A / V output terminal 50.

In the second case, when the user selects a function to output a signal currently being output on the TV screen to the external monitor 60, the control signal, that is, the low / high signal from the microcomputer control unit 30 is switched to the second switching stage 40. And the second switching stage 40 is a signal that is switched and output from the first switching stage 4 among the signals applied based on the control signal and is applied to the second switching stage 40. By switching, the corresponding call is output to the external monitor 60 through the variable A / V output terminal 40.

In a third case, if the user selects a function such that the video / audio signal output from the first A / V input terminal 3 is always output to the external monitor 60 regardless of the TV screen, the control signal, i.e. The high / low signal is output to the second switching stage 40, and the second switching 40 is output from the first A / V input terminal 3 among the signals applied based on the control signal. The signal applied to the second switching stage 40 is switched to output the corresponding signal to the external monitor 60 through the variable A / V output stage 50.

In a fourth case, if the user selects a function such that the video / audio signal output from the second A / V input terminal 20 is always output irrespective of the signal currently being output to the TV screen to the external monitor 60, the micom ( 30, a control signal, that is, a high / high signal is output to the second switching stage 40, and the second switching stage 40 is the second A / V input terminal among the signals applied based on the control signal. The signal is output from 20 and is applied to the second switching stage 40 so that the corresponding signal is output to the external monitor 60 through the variable A / V output stage 50.

That is, in the above-described configuration, different control signals are output from the microcomputer control unit 30 to the second switching stage 40 according to the output function selected by the user, and the second switching unit 40 is based on the control signals. The switching stage 40 performs a switching operation so that the video / audio signal of the output function selected by the user is output to the variable A / V output stage 50 so that the external monitor 60 can be viewed.

According to the present invention having the above-described configuration, the connection terminal for the connection with the external monitor is not fixedly installed, and is not separately installed for each function. The output function can be changed in various ways according to the requirements of the single output terminal.

In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the technical gist of the present invention.

Claims (1)

In addition to controlling the overall device, a microcomputer that applies a predetermined control signal to a first switching stage to be described later, a detector for detecting a video / audio signal transmitted from a broadcasting station, and an image output from an external A / V device A / V device input terminal to be applied to the first switching stage to be described later, the video / audio signal output from the detector and the video / audio signal output from the A / V device input terminal is output from the microcomputer In a terminal for outputting a TV having a first switching means for performing a switching operation based on a control signal and an external monitor connected to the TV, a second control signal to be described later according to an output function selected by a user. A microcomputer controller for outputting to a switching stage, a video / audio signal output from the detector, and a video / audio output from the A / V input terminal Signal and a second switching stage for performing the video / switching operation is received a voice signal on the basis of a predetermined control signal output from the microcomputer control unit output from the first switching stage. And a variable A / V output stage for outputting a video / audio signal selected by a user as a connection means to the external monitor and switched and output from the second switching stage to the external monitor. Jack terminal for variable output.