JPH0830941B2 - TV broadcast receiver that can display the visitor mark - Google Patents

Description

TECHNICAL FIELD The present invention relates to a television receiver, and more particularly to a television broadcast receiver capable of displaying a visitor mark on a television screen.

[Conventional technology]

In the past, even when there was a visitor when watching a TV with a high volume, the ringing sound of the door horn unit operated by the visitor could not be heard.

[Problems to be Solved by the Invention]

The present invention utilizes the on-screen circuit of a television to
The purpose is to display the visitor's mark when there is a visitor on the screen of the television so that the visitor can be informed.

[Means for solving the problem]

As shown in FIG. 1, in a door horn unit 1 including an outdoor unit equipped with operation switches 3 and the like, an indoor unit 4, and a connection circuit 20 between the indoor unit 4 and the outdoor unit, the connection circuit 20 is turned on. A coupling means is provided between the television 6 having a screen display function, the number of times of operation of the operation switch 3 or a series of operations is detected by the detection unit 10, and a detection signal of the detection unit 10 is input to the microcomputer 11, The character generator 15 outputs the control signal corresponding to the input signal from the microcomputer 11.
The character generator 15 outputs a character signal corresponding to the control signal and inputs it to the video circuit 18, so that the screen is displayed on the CRT 19 based on the character signal input to the video circuit 18. ing.

[Action]

According to the present invention, the door horn unit 1 has the above-described configuration.
When the operation switch 3 of is operated, the visitor's mark display is displayed on the screen of the CRT 19, and is input to the microcomputer 11 as shown in the flowchart of the visitor mark display procedure in FIG. If the signal is a visitor mark display signal and the visitor mark display signal is a signal indicating that the number of times the switch 3 has been operated within a certain period of time is two, The control signal for displaying the display signal of is output from the microcomputer 11 and is displayed on the screen of the CRT 19 in addition to the character generator 15.
If the signal is operated 3 times, The control signal for displaying the display signal of is output from the microcomputer 11, and the visitor mark display signal is set to the switch 3 within a certain time.
If the signal is operated four times, When the control signal for displaying the display signal of is output from the microcomputer 11 and the visitor mark display signal does not correspond to any of the above, The control signal for displaying the display signal is output from the microcomputer 11 and displayed on the screen of the CRT 19.

Therefore, even if there is a visitor when watching the TV with the volume turned up and the ringing sound of the door horn unit cannot be heard, the on-screen circuit of the TV is used to notify the visitor to the screen of the TV. The presence of a visitor can be noticed by displaying the display signal of.

〔Example〕

FIG. 1 is an electric circuit block diagram of a main part of a television broadcast receiving apparatus capable of displaying a visitor mark showing an embodiment of the present invention. The door horn unit 1 is composed of an operation switch 3, a speaker and a microphone 2. Outdoor unit and indoor unit 4
And a connection circuit 20 for connecting the indoor unit 4 to the outdoor unit, and connecting means is provided between the connection circuit 20 and the television 6 having an on-screen display function to operate the operation switch 3 of the door horn unit 1. This operation signal can be input to the microcomputer 11 built in the television 6.

The microcomputer 11 outputs a control signal corresponding to the input signal and inputs it to the character generator 15, and the character generator 15 outputs a predetermined character signal determined according to the control signal and inputs it to the video circuit 18. .

The video circuit 18 is a video signal added through an IF circuit 16 that amplifies a received signal of a television broadcast and outputs an audio signal and a video signal separately, and a video detection circuit 17 that detects and outputs the video signal. In addition to CRT19 by amplifying and outputting, the CRT19 is reproducing the video signal of the television broadcast, and the character signal added from the character generator 15 is superinvoked to the video signal of the television broadcast to generate the character signal. indicate.

FIG. 3 is a flow chart showing a procedure for displaying a visitor mark, which corresponds to the operation signal of the operation switch 3
As shown in the figure Etc. are displayed on the screen of CRT19. The display may be a display that flashes for a certain period of time.

FIG. 1 shows an embodiment in which the door horn unit 1 and the television 6 having an on-screen display function are connected by wire.
The connection wiring is further branched and a signal is input to the television 6 through the input line 5.

A photocoupler 8 is used as an input circuit to the television 6, and a line between the input line 5 to the television 6 is terminated by a protective resistor 7 and a light emitting diode of the photocoupler 8, and the phototransistor side of the photocoupler 8 is connected. Is the circuit side of the television 6, and the collector of the phototransistor is a load resistor 9
The signal voltage is connected to the B voltage via the input terminal and the signal voltage is input from the connection point between the load resistor 9 and the collector of the phototransistor to the detection section 10.

The detection unit 10 includes an input line 5 and a photo coupler 8 of the TV.
The opening / closing signal of the operation switch 3 of the door horn unit 1 applied via the signal is shaped into a signal that can be driven by the microcomputer 11, and the signal is input to the microcomputer 11.

FIG. 2 shows an embodiment in which the coupling means between the door horn unit 1 and the television 6 having the on-screen display function is coupled by electromagnetic waves. In the figure, the same components as those shown in FIG. 1 are designated by the same symbols. The remote control transmitter 21 is connected to the connection circuit 20 of the door horn unit 1, the operation signal of the operation switch 3 of the door horn unit 1 is transmitted as an electromagnetic wave, and the remote control receiver 22 provided in the television 6 receives the electromagnetic wave. Then, the detector 23 detects the operation signal of the operation switch 3 of the door horn unit 1 and converts it into a signal that can be driven by the microcomputer 11, and inputs the signal to the microcomputer 11. ing.

A display signal indicating that there is a visitor may be displayed on the screen of the television 6 and a ringing tone may be output from the television 6 as follows, as shown in FIGS. 1 and 2.

The television 6 inputs the audio signal separated from the IF circuit 16 to the audio circuit 13, reproduces the audio signal of the television in the audio circuit 13 and outputs the audio to the speaker 14.

The operation switch 3 of the door horn unit 1 on the microcomputer 11
When the operation signal of is input, the microcomputer 11 outputs a control signal corresponding to the input signal and the character generator 15
The buzzer 12 may be directly sounded by inputting a signal to the buzzer 12 as well as input to the sound circuit 13.
A speaker that superimposes the buzzer sound on the TV audio signal
In addition to 14, sound may be output.

〔The invention's effect〕

As described above, according to the present invention, the on-screen circuit of the television is used to display the display signal of the visitor when there is a visitor on the screen of the television, thereby increasing the volume of the television. It is possible to provide a television broadcast receiving device capable of displaying a convenient visitor mark that can notify the presence of a visitor even when watching.

[Brief description of drawings]

FIG. 1 is a block diagram of an electric circuit of a main part of a television broadcast receiving apparatus capable of displaying a visitor mark showing an embodiment of the present invention, and FIG. 2 shows a visitor mark showing another embodiment of the present invention. FIG. 3 is a flow chart showing a procedure for displaying a visitor mark, which is a block diagram of an electric circuit of a main part of a television broadcasting receiving device which is enabled. 1 ... Door horn unit, 2 ... Speaker and microphone, 3 ... Operation switch, 4 ... Indoor unit, 5 ... Input line, 6 ... Television receiver, 7,9 ... Resistor, 8 ... Photo Coupler, 10,23 …… Detector, 11 …… Microcomputer, 12 ……
Buzzer, 13 ... Voice circuit, 14 ... Speaker, 15 ... Character generator, 16 ... IF circuit, 17 ... Video detection circuit, 18 ... Video circuit, 19 ... CRT, 20 ... Door horn unit connection Circuit, 21 ... Remote control transmitter, 22 ... Remote control receiver.

Claims (1)

[Claims] 1. A door horn unit comprising an outdoor unit equipped with operation switches, an indoor unit, and a connection circuit for connecting the indoor unit and the outdoor unit, between the connection circuit and a television having an on-screen display function. A coupling means for coupling
A detection unit that detects the number of times of operation of the operation switch or a series of operations, a microcomputer that outputs a control signal corresponding to the detection signal from this detection unit, and a character signal that corresponds to the control signal input from this microcomputer. A character generator is provided, a character signal from the character generator is input to a video circuit, and a visitor mark can be displayed on the screen based on the character signal input to the video circuit. TV broadcasting receiver.