JPH02292981A - Video telephone set for connection to isdn - Google Patents

Abstract

PURPOSE:To display various types of information on a display by providing a means to convert various types of information into video signals and to display them and a start means to display the due information on the display. CONSTITUTION:An operator performs the mutual communication with its partner terminal with use of a control circuit 25 via the aural communication carried out by a voice system circuit 24 after connection while watching a display 22 for video signals via a video system circuit 23 and a screen via a camera 21. Then a character video conversion circuit 11 converts the information into the video signals after receiving the information to be displayed from an ISDN or a terminal. These converted video signals are mixed with the video signals of the image of the partner or the image of its own picture by a mixing circuit 12 and displayed on a display 22. If the information to be displayed is received from the ISDN or the terminal only in a voice communication mode, a video part is started by a start circuit 13 to mix the video signal proper to the image of its own picture or the circuit 23 with the character video signal. These mixed signals are displayed on the display 22.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a videophone for ISDN connection, and in particular has a videophone function that allows you to talk while viewing the image of the other party, as well as displaying various information on the same display. ISDN
This relates to a videophone that connects to the .

(Prior Art) FIG. 2 is a block diagram showing the configuration of a conventional ISDN connection video telephone. In the figure, 21 is a camera that takes a self-portrait and obtains a video signal of the self-portrait, 22 is a display that displays the self-portrait or the other party's image, and 23 is a control circuit that transmits and receives video signals to and from ISDN via a control circuit 25, which will be described later. 24 is an audio circuit that performs the telephone call function; 25 is a control circuit that controls the transmission and reception of signals from and to the ISDN. The image display of a conventional videophone connected to an ISDN having the above configuration consists of a video signal (NTSC signal) sent from the videophone of the calling party and a video signal (NTSC signal) of the called party from the camera 21. A self-portrait) was only displayed on the display 22. Furthermore, there was no video display when there was only a voice call.

(Problem to be Solved by the Invention) However, with conventional videophones, the original purpose is to talk while viewing the image of the other party, and information from the ISDN and guidance on the terminal are displayed on the display of the video signal. There was no function to do so. A dedicated display unit was required to display this information.

Furthermore, in the case of a voice call, no video signal is displayed on the display because no video is required.

The present invention is intended to solve these problems, and an object of the present invention is to provide a video telephone for ISDN connection that can display various information on a display that displays the other party's image or one's own image.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a camera that takes a self-portrait and obtains a video signal of the self-portrait, a display that displays the self-portrait or the other person's image, and a display for transmitting and receiving video signals. In a videophone for ISDN connection, the videophone is equipped with at least a video section consisting of a video control section for performing functions, and an audio section consisting of an audio control section for carrying out telephone call functions, which converts various information from the ISDN into video signals. The present invention is characterized in that it is provided with a character/video converting means for displaying the information on the display, and an activation means for activating the video section and displaying the information on the display when there is information to be displayed.
(Operation) According to the present invention having the above configuration, when information to be displayed on the display is sent from the engineering SDN,
The information is converted into a video signal by the text/video conversion means. Then, the converted character image is displayed on the display alone or together with the user's own image, the other person's image, or a unique image. Further, when information to be displayed is sent from ISDN when the video section is not activated due to only a voice call, the activation means detects the information and forcibly activates the video section. This allows the information to be displayed on the display.

Therefore, the present invention can solve the above-mentioned problems and provide an ISDN-connected video telephone that can display various information on a display that displays the other party's image or one's own image.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In this figure, the same reference numerals as in FIG. 2 indicate the same components. As a different component, l1 transmits information to the NT when there is information to be displayed from the ISDN or the terminal.
A character video conversion circuit (superimpose circuit) 12 converts the image signal of the SC system into a video signal of the SC system, and l2 is a video signal of the other party's image or self-portrait image from the video system circuit 23 and a video signal converted by the character video conversion circuit 11. A mixing circuit 12 is a starting circuit for forcibly starting the video section to display the information to be displayed on the display 22 when there is information to be displayed in the case of only a voice call.

Next, the operation of this embodiment will be explained.

After the operator connects to the other party's terminal using the control circuit 25, the operator makes a voice call using the audio system circuit 24, and performs mutual communication while viewing the video signal display 22 and camera 21 using the video system circuit 23. Therefore, when there is information to be displayed from ISDN or a terminal, the character/video conversion circuit 11
The information is converted into an NTSC video signal, mixed with the video signal of the other party's video or the self-portrait video by the mixing circuit 12, and displayed on the display 22.

In addition, in the case of only a voice call, if there is information to be displayed from the ISDN or the terminal, the startup circuit 13 activates the video section, and the self-portrait video or video system circuit 23 outputs a temporary video signal to the synchronization signal, for example. A character video signal is mixed with a unique video signal such as a simulated video signal created by adding a character video signal, and the mixture is displayed on the display 22.

(Effects of the Invention) As explained above, according to the present invention, various information can be displayed on a display that displays the other party's image or one's own image, and it is possible to provide an I/O that can be expected to improve services for the user.
We can provide videophones for SDN connection.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of a conventional ISDN connection video telephone. 11ψ l2φ 13◆ 21・22・23・24・25 Medium character video conversion circuit, mixing circuit, startup circuit, camera, display, video system circuit, audio system circuit, control circuit.

Claims (1)

[Scope of Claims] A video unit consisting of a camera that takes a self-portrait and obtains a video signal of the self-portrait, a display that displays the self-portrait or the other party's image, a video control unit that performs a video signal transmission/reception function, and a telephone call. A video telephone for ISDN connection, which is equipped with at least an audio section consisting of an audio control section that performs functions, and a text/video conversion means that converts various information from the ISDN into video signals and displays them on the display; 1. A video telephone for ISDN connection, characterized in that the ISDN connection video telephone is provided with activation means for activating the video section to display information to be displayed on the display when information is available.