JP2001285728A - D-terminal input side equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a D-terminal input side equipment capable of informing a user of that effect that the video signals of a format not receivable by the D-terminal input side equipment are inputted. SOLUTION: This equipment is provided with a means for discriminating the format of the video signals inputted from a D terminal and a means for displaying an image for informing the user of that effect in the case that the video signals inputted from a D terminal connector are not in the format receivable in the television receiver.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention is mainly a digital tuner, an analog component video signal and a television receiver or the like _{(Y, P B, P R} ) D terminal input side having a D terminal for connection Equipment related.

[0002]

2. Description of the Related Art A D terminal having a D terminal for connecting a digital tuner and a television receiver or the like with analog component video signals (Y, P _B , P _R ).
Terminal input devices have already been developed.

[0003] As shown in Table 1, there are five D terminal input side devices, that is, D terminal D display methods of a television receiver or a monitor device. Each display D1
D5 defines a video signal format that can be input.

[0004]

[Table 1]

In Table 1, i is an interlace, p is
Indicates progressive, and the preceding numbers indicate the number of effective scanning lines.

[0006] For example, only the 525i video signal format can be received by the D terminal input side device indicated as D1, and the 525p, 1125i, and other video signal formats cannot be received.

However, the shape of the D terminal is the same regardless of the D terminal indication, and the D terminal indicated by D1 is the same.
It is possible to connect a D terminal output side device (digital tuner) having a D terminal indicated as D5 to the terminal input side device. When such a connection is made, a video signal in a format that is not accepted by the D terminal input side device may be input.

[0008]

SUMMARY OF THE INVENTION The present invention provides a D terminal input side device capable of notifying a user that a video signal of a format not accepted by a D terminal input side device has been input. The purpose is to:

[0009]

According to the present invention, there is provided a D terminal input side device, comprising: means for judging a format of a video signal input from a D terminal; and a video signal input from a D terminal connector. In the case where the format is not acceptable, a means for displaying a screen for notifying the user to that effect is provided.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment in which the present invention is applied to a television receiver which is a D terminal input side device will be described with reference to the drawings.

FIG. 1 shows the operation of a television receiver as a D terminal input side device.

The format of the video signal input from the D terminal is determined (step 1). This determination is based on the output voltages (identification voltages) of the three identification signal lines (line 1, line 2, and line 3) included in the D terminal cable.
It is performed based on. Table 2 shows the relationship among the identification voltages of the three identification signal lines, the number of scanning lines, i / p, and the aspect ratio.

[0013]

[Table 2]

Based on the format of the video signal input from the D terminal connector, it is determined whether or not the video signal input from the D terminal connector is in a format acceptable in the television receiver (step 2).

If the video signal input from the D terminal connector is in a format that can be accepted by the television receiver, normal processing is performed to display the video (step 3).

If the video signal input from the D terminal connector is not in a format that can be accepted by the television receiver, it is impossible to predict how the video signal will be displayed on the screen as it is. As shown in the figure, on the screen whose synchronization is different from that of the input video, a video that cannot be displayed such as "This video cannot be viewed" is displayed on the screen (step 4).

When the video signal input from the D terminal connector is not in a format that can be accepted by the television receiver, as shown in FIG. Alternatively, the color of the character "D terminal input" displayed when the D terminal is input may be displayed in a color (for example, "red") different from the normal color (for example, "blue").

[0018]

According to the present invention, when a video signal in a format that is not accepted by the D terminal input side device is input, the user can be notified of the fact.

[Brief description of the drawings]

FIG. 1 is a flowchart showing an operation of a television receiver as a D terminal input side device.

FIG. 2 is a schematic diagram showing an example of a screen displayed when a video signal input from a D terminal connector is not in a format that can be accepted by the television receiver.

Claims (1)

[Claims] 1. A means for judging the format of a video signal input from a D terminal, and if the video signal input from a D terminal connector is not in a format acceptable by the television receiver, the user is notified of the fact. Means for displaying a screen for notifying the user of the D terminal.