JPH02135888A - Video telephone system - Google Patents

Abstract

PURPOSE:To easily transmit and receive the message of a title, etc., by means of small characters by providing a display exclusive for displaying character data. CONSTITUTION:Character data is detected in a character data detection circuit 17. A way for detection can be that the identification mark of character data is included in the header of picture data, or the identification mark is provided in the leading end of character data, for example. Character data detected in the character detection circuit 17 is supplied to CRT 8 as a display exclusive for a character data through a control circuit 18, and a font 19 controlled in the control circuit 18 is serially converted in a conversion circuit 20, supplied to CRT 8, whereby the character data is displayed in the objective font. Thus, the message of the title by the small characters can easily be transmitted and received.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a video telephone device having an image display function.

[Prior Art] FIG. 5 is an external perspective view showing a conventional videophone device. In the figure, (1) indicates a received image sent from the other party via a telephone line and a television camera (2). CR as a display that displays monitor images taken with
It is T. (3) to (7) are function buttons; (3)
is the monitor image brightness adjustment button, (4) is the monitor image/receive image switching button, (5) is the confirmation button that allows you to check the sent image, (6) is the send button that sends the image, (7) is the power button It's a button.

Next, the operation will be explained. By pressing the power button (7), the power is turned on, the monitor mode is automatically set, and the monitor image taken by the television camera (2) is displayed on the CRT (1).

This monitor image is a video.

When an image is sent from the other party while the telephone line is connected, the device automatically enters reception mode and receives the image. The received images are displayed on the CRT (1) in real time. Up to three images can be received.

When receiving images, press the confirmation button (in monitor mode)
5) stops the display image on the CRT (1) and confirms the image to be sent. If it is OK to send the image, press the send button (6) and the image displayed on the CRT (1) will be sent to the other party via the telephone line. Further, when sending a received image, the selected received image can be sent in the same manner as above by selecting the received image to be sent using the switching button (4) and pressing the send button (6).

[Problem to be solved by the invention ffi] Since the conventional videophone device is configured as described above, the image configuration is 96 (horizontal) x 100 (vertical) pixels, and small characters etc. cannot be transmitted or received. There was a problem.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a video telephone device that can transmit and receive small characters.

[Means for Solving the Problems] A videophone device according to the present invention is provided with a display for displaying image data and a dedicated display for displaying character data, thereby making it possible to send and receive small characters.

[Function] The video telephone device according to the present invention is provided with a dedicated display for displaying character data, thereby making it possible to easily send and receive messages such as titles in small characters.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
In the figure, the same parts as in FIG. 5 are given the same reference numerals, and (8) is a CRT as a display exclusively for character data for displaying messages.

(9) is a keyboard dedicated to character data for inputting messages.

Figure 2 is an enlarged view of the keyboard (9), including a large number of keys (10) for inputting each letter of the alphabet, alpha/numeric keys for switching between alphabets and numbers, Roman alphabets and kana, and a switch key for Roman time kana (11). Numbered oysters (12)
has.

Messages can be entered using the keyboard (9) above in English/
When the numeric and Roman alphabet/kana switching keys (11) are switched to English, alphabetic characters are input using the alphabet keys (10).

When the switching key (11) is switched to Romaji kana, kana is input in Romaji. To input numbers, while pressing the number input key (12), display the number and press the alphabet key (10).

The entered messages will be displayed on the CRT in the order in which they were pressed.
(8) are displayed in order from right to left on the display screen. If you want to erase the incorrect display, display the space character, press the alphabet key (10), and then press the alphabet key (10) corresponding to the character you want to erase.

The above message is encoded as shown in Figure 3.
The image to be transmitted is sent after the control signal. The code is expressed in 8-bit binary as in a normal personal computer, and is modulated in the same way as image data. Since it is encoded, the time will not be affected much even if it is attached to the image data.

FIG. 4 is a block diagram showing the overall configuration, and the same parts as in FIG. 1 are given the same symbols, and (13) is a telephone line (
(14) is an input/output device for inputting and outputting image data and character data, and (15) is an input/output device for transmitting and receiving image data and character data to and from the telephone line (14) via the input/output device (13). A central processing unit (hereinafter abbreviated as CPU) performs the processing. (16) supplies the monitor image taken by the television camera (2) to the CPU (15), and also transmits the monitor image and the received image supplied from the CPU (15) to the CRT.
(1) is an image control device that outputs data to the CRT (8); (17) is a character data detection circuit; (18) is a control circuit for displaying character data detected by the character data detection circuit (17) on a CRT (8); 19) is a character font, and when a character code is input, a corresponding character pattern is output.

(20) is a conversion circuit which serially converts the data from the font (19) and supplies it to the CRT (8).

Next, the operation will be explained. When the CPU (15) receives image data and character data sent from the other party via the telephone line (14) from the input/output device (13), the image data is sent via the image control device (16). CR
It is sent to TI and displayed.

On the other hand, character data is detected by a character data detection circuit (17). As a method of this detection, for example, an identification mark of character data may be included in the header of the image data, or an identification mark may be provided at the beginning of the character data.

The character data detected by the character data detection circuit (17) is supplied to the CRT (8) via the control circuit (18) and is also supplied to the font (1) controlled by the control circuit (18).
9) is serially converted by the conversion circuit (20) and transferred to the CRT (
8) and display the above character pig in a desired font.

In addition, the monitor image taken with the TV camera (2) is
When there is character data that is sent to the CRTl by the image control device (16) for display and is also input to the CPU (15) and entered from the keyboard (9), the identification mark of this character data is added to the header of the image data. or an identification mark is provided at the beginning of the character data, and the data is transmitted to the other party via the input/output device (13) and telephone line (14).

In the above embodiment, a CRT was described as the display, but a liquid crystal may be used, and the same effects as in the above embodiment can be obtained.

[Effects of the Invention] As described above, according to the present invention, since a dedicated display for displaying character data is provided, messages such as titles in small characters can be easily sent and received.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view showing a video telephone device according to an embodiment of the present invention, FIG. 2 is an enlarged plan view of a keyboard for inputting character data into the device, FIG. 3 is an explanatory diagram of control signals, and FIG. The figure is a block diagram showing the overall configuration of the device.
The figure is an external perspective view of a conventional video telephone device. In the figure, (1) and (8) are display (CRT) (2)
is a television camera, (9) is a keyboard, (17) is a character data detection circuit, (18) is a control circuit, and (19) is a font. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent: Patent Attorney Masuo Oiwa (2 others) Fig. 1 External perspective view of the device of this invention Fig. 2 Enlarged plan view of the keyboard Fig. 2 Block diagram of the device of this invention Fig. 4 An explanatory diagram of the directional control signal to be sent Fig. 3 Fig. 5 External perspective view of conventional device

Claims (1)

[Claims] In a video telephone device having a television camera for photographing a monitor image, and a display for displaying the monitor image and a received image transmitted via a telephone line, a keyboard for inputting desired character data, and a keyboard for inputting desired character data; A dedicated display for displaying, a character data detection circuit for detecting character data, and a control circuit for displaying the character data detected by the character data detection circuit on the dedicated display and controlling the font of the character data. A videophone device characterized by comprising: