JPH10304260A - Television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attain switching to an objective equipment by detecting the connecting situation of plural AV equipment connected with plural external input terminals, changing an on-screen display method according to the presence or absence of the AV equipment, and operating the input switching of the AV equipment by the movement of a cursor. SOLUTION: When AV equipment 1, 2, and 3 are connected with external input terminals 4, 5, and 6 with SW having connection detection, the connecting state is detected by a connection detecting circuit 8, and the presence or absence for a synchronizing signal is detected by a synchronizing signal detecting circuit 15, and horizontal frequencies are detected by a horizontal frequency detecting circuit 16. Then, a connection drawing is on-screen displayed by changing a display color according to the presence or absence of connection, the presence or absence of the synchronizing signal, and the horizontal frequencies. The displayed AV equipment is selected by the cursor key of a remote control device so that input switching can be attained. The display color is cyan in the case of the presence of both synchronization and connection, it is yellow in the case of the absence of synchronization and the presence of connection, and it is yellow in the case of the absence of synchronization or connection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver for electronic equipment.

[0002]

2. Description of the Related Art Input switching of a conventional television receiver is performed by:
As disclosed in Japanese Patent Application Laid-Open No. H5-252459, control has been performed so as to detect the presence or absence of a video signal of an AV device connected to an external input terminal and not to select an input having no video signal.

[0003]

As described above, by simply detecting the presence / absence of a video signal of an AV device connected to an external input terminal, when a VCR receiving a channel without broadcasting is connected, There is a problem that the video deck is not selected even when the input is switched.

[0004]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention detects the connection status of a plurality of AV devices connected to a plurality of external input terminals, and turns on the connection status depending on the connection of the AV devices. The screen display method is changed, and the input of the AV device is switched using the cursor movement keys of the remote controller.

[0005] Thus, the connected AV equipment can be visually grasped, and switching to the target equipment can be easily performed.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention detects the connection status of a plurality of AV devices connected to a plurality of external input terminals, and determines whether or not the AV devices are connected. The display method is changed, and the input of the AV device is switched by using a cursor movement key of a remote controller. Thus, the connected AV device can be visually grasped. This has the effect that the switching to the device can be easily performed.

According to a second aspect of the present invention, the apparatus comprises means for detecting connection to an external input terminal, and means for displaying the detection result on-screen using characters and figures of a plurality of colors. This is an advantage that the connected AV equipment can be visually grasped and the switching to the target equipment can be easily performed.

According to a third aspect of the present invention, there is provided a means for detecting the presence or absence of a synchronization signal of an external input, a means for detecting connection to an external input terminal, and using a multi-colored character and a drawing as a detection result. And an on-screen display means.
This has the effect that the state of the V device can be visually grasped and switching to the target device can be easily performed.

According to a fourth aspect of the present invention, there is provided a means for detecting a frequency of a synchronization signal of an external input, a means for detecting the presence or absence of a synchronization signal of an external input, and a means for detecting connection to an external input terminal. And means for displaying the detection result on-screen using characters and figures of a plurality of colors, and visually grasps the connected AV device and the state of the AV device. And it is possible to easily switch to the target device.

(Embodiment 1) The first aspect of the present invention will be described below.
And about the embodiment of the invention described in claim 2,
This will be described with reference to FIGS. FIG. 1 shows a block diagram of a television receiver according to Embodiment 1 of the present invention. In FIG. 1, reference numerals 1, 2, and 3 indicate AV devices. Reference numerals 4, 5, 6, and 7 are external input terminals with connection detection SWs, 8 is a connection detection circuit, and 13 is a microcomputer. 14 is an on-screen display circuit, and 11 is a synthesis circuit.

When an AV device is connected to the external input terminals 4, 5, 6, the connection state is detected by the connection detection circuit 8, and the connection diagram is displayed on-screen by changing the display color according to the presence or absence of connection. Input switching is performed by selecting the displayed AV device with a cursor movement key of a remote controller. FIG.
Shows examples of display methods and display colors.

(Embodiment 2) Next, claim 3 of the present invention will be described.
The embodiment of the invention described in (1) will be described with reference to FIGS. FIG. 3 shows a block diagram of a television receiver according to Embodiment 2 of the present invention. FIG.
Reference numeral 15 denotes a synchronization signal detection circuit.

When an AV device is connected to the external input terminals 4, 5, and 6, the connection state is detected by the connection detection circuit 8, and the connection diagram is turned on by changing the display color according to the presence or absence of the connection and the presence or absence of the synchronization signal. Display on screen. Input switching is performed by selecting the displayed AV device with a cursor movement key of a remote controller. FIG. 4 shows an example of a display method and a display color.

(Embodiment 3) Next, claim 4 of the present invention will be described.
The embodiment of the invention described in (1) will be described with reference to FIGS. FIG. 5 shows a block diagram of a television receiver according to Embodiment 3 of the present invention. FIG.
Reference numeral 16 denotes a horizontal frequency detection circuit.

When an AV device is connected to the external input terminals 4, 5, and 6, the connection state is detected by the connection detection circuit 8, and the connection diagram is used to determine the display color based on the presence or absence of the connection, the presence or absence of the synchronization signal, and the horizontal frequency. Change to on-screen display. Input switching is performed by selecting the displayed AV device with a cursor movement key of a remote controller. FIG. 6 shows an example of a display method and a display color.

[0016]

As described above, according to the present invention, the connection status of a plurality of AV devices connected to a plurality of external input terminals is detected, and the on-screen display method is changed depending on whether or not the AV devices are connected. As a result, there is an advantageous effect that the input of the AV device can be switched using the cursor movement keys of the remote controller.

[Brief description of the drawings]

FIG. 1 is a block diagram of a television receiver according to Embodiment 1 of the present invention.

FIG. 2 is a display example diagram of FIG. 1;

FIG. 3 is a block diagram of a television receiver according to a second embodiment of the present invention.

FIG. 4 is a display example diagram of FIG. 3;

FIG. 5 is a block diagram of a television receiver according to a third embodiment of the present invention.

FIG. 6 is a display example diagram of FIG. 5;

[Explanation of symbols]

 1, 2, 3 AV equipment 4, 5, 6, 7 External input terminal with connection detection SW 8 Connection detection circuit 9 AV-SW 10 Video signal processing circuit 11 Synthesizing circuit 12 CRT 13 Microcomputer 14 On-screen display circuit 15 Synchronous signal detection Circuit 16 Horizontal frequency detection circuit

Claims (5)

[Claims] 1. A television receiver characterized in that, when a plurality of devices are connected to an external input terminal, an on-screen display is changed, and input switching of the devices is performed by moving a cursor. 2. A television receiver comprising: means for detecting that a device is connected to an external input terminal; and means for displaying a detection result on-screen. 3. A means for detecting the presence or absence of a synchronization signal of an external input, a means for detecting connection to an external input terminal, and a means for displaying a detection result on-screen using characters and figures of a plurality of colors. And a television receiver. 4. A means for detecting a frequency of a synchronization signal of an external input, a means for detecting the presence or absence of a synchronization signal of an external input,
A television receiver comprising: means for detecting connection to an external input terminal; and means for displaying a detection result on-screen. 5. The television receiver according to claim 2, wherein the detection result is displayed on-screen using characters and figures of a plurality of colors.