JPH04137967A - Still picture television telephone set - Google Patents

Abstract

PURPOSE:To attain communication of data other than a picture data by devising the telephone set such that a DTMF generator connecting to a telephone line sends the data other than the picture data and a DTMF receiver connecting to the telephone line fetches the data other than the picture data. CONSTITUTION:When a key switch 4 gives a command of polling, exchange of camera connection information, exchange of ID number, telecontrol, changeover of picture mode and operation other than picture data communication to a CPU 3, the CPU 3 is operated according to the command and allows a DTMF generator 6 to send the data commanded to a telephone line 1. When a data other than a picture is sent from an opposite party via the telephone line 1, it is received by a DTMF receiver 7 and given to the CPU 3. Then the CPU 3 is operated according to the data. Thus, the DTMF generator and the DTMF receiver are provided to send/receive optional information not only the communication of picture and voice information.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a still image videophone device that transmits and receives still images through a telephone line, and particularly to a still image videophone device that allows data other than image data to be transmitted and received. It is related to.

[Prior Art] FIG. 2 is a block diagram of a conventional still picture videophone device.

In the figure, a modem section (1) connected to a telephone line (1) is shown.
2) demodulates received image data or modulates transmitted image data, and is controlled by CPtJ (3).

The CPU (3) controls each part of the device according to the operation of the key switch (4). For example, by controlling the image processing section (5), camera input image data and received image data are stored in the image processing section (5), or an arbitrary image is displayed on a display (not shown).

Such conventional still image videophone devices are capable of capturing images of subjects photographed with a camera, such as a self-portrait of the caller, or a telephone line (
1) The image transmitted through the modem section (2) is stored in the image processing section (5).

Furthermore, the image data selected with the key switch (4) is
According to instructions from the CPU (3), the image is read out from the image processing section (5) and displayed on a display (not shown) or transmitted over the telephone line (1).

[Problems to be Solved by the Invention] Conventional still image video telephone devices, having the above configuration, were inconvenient because they could only exchange images and voice, and therefore could not perform data communication.

The present invention was made in order to solve this problem, and an object of the present invention is to provide a still image videophone device that can also communicate data other than images.

[Means for Solving the Problems] A still image video telephone device according to the present invention includes a DTMF generator connected to a telephone line and transmitting non-image data, and a DTMF generator connected to the telephone line and transmitting non-image data from the telephone line. and a DTMF receiver for receiving the DTMF receiver.

[Function] In the still picture video telephone device according to the present invention, data other than images is sent onto the telephone line by the DTMF generator connected to the telephone line. Conversely, a DTMF receiver connected to the telephone line captures data other than the image over the telephone line. As a result, DTMF
The generator and DTMF receiver perform polling, exchange of camera connection information, exchange of ID numbers, telecontrol, switching of image modes, etc. That is,
Data communication via telephone lines becomes possible.

[Example] Next, the present invention will be explained in more detail with reference to an example shown in FIG.

In Figure 1, the telephone line (1) includes a modem section (2).
, DTMF generator (6) and DTMF receiver (7) are connected, and these elements are controlled by the CPU (3). The CPU (3) also has an image processing unit (
5) All parts are controlled in an integrated manner. The key switch (4) is an element for instructing the CPU (3) to operate.

Here, the modem section (2) performs modulation and demodulation for transmitting and receiving image data, as well as level adjustment, and the CPU
(3) provides overall control of the entire telephone device, and the DTMF generator (6) and DTMF receiver (7) are for transmitting and receiving data other than image data.

In the still image video telephone device according to this embodiment configured as described above, the telephone line (1
) is demodulated and input to and stored in the image processing section (5), or inputted by a camera and input to the image processing section (5).
) and reads out the image data stored in the modem section (2).
Modulating the signal and transmitting it via the telephone line is similar to the conventional device shown in FIG.

In particular, in this invention, the DTM F generator (6)
and the DTM F receiver (7) are connected to the telephone line (1).
It is connected to the CPU (3) and is provided so as to be controllable by the CPU (3).

As a result, when the key switch (4) instructs the CPU (3) to perform operations other than polling, camera connection information, ID number exchange, telecontrol, image mode switching, and other operations other than image data communication, the CPU (3) operates according to the instructions and converts the instructed data into DTMF
The generator (6) transmits to the telephone line (1).

Furthermore, when data other than images is transmitted from the other party via the telephone line (1), it is received by the DTMF receiver (7) and given to the CPU (3). Then, the CPU (3) performs work according to the data and, if necessary, displays characters or symbols on a display (not shown).

[Effects of the Invention] As explained above, the present invention combines a DTMF generator for transmitting data to a telephone line and a DTMF receiver for receiving data transmitted from the telephone line into a modem section of a telephone device. In addition to the structure, which is connected to a telephone line, it is possible not only to exchange image and audio information, but also to send and receive arbitrary information, making it possible to perform polling and exchange of camera connection information. Therefore, it is possible to provide a still image videophone device that is more convenient to use.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a still picture video telephone device showing an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional still picture video telephone device. In the figure, (1) is the telephone line, (2) is the modem section, (3) is the CPU, (4) is the key switch, (5) is the image processing section,
(6) is a DTMF generator, and (7) is a DTMF receiver. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent: Patent Attorney Yoshi 11 Kenji (2 others) A direct image of a sudden f-critique, a telephonic device, and a retrograde still image videophone device.

Claims (1)

[Claims] an image processing unit that stores image data and displays it on a display device; a modem unit connected to a telephone line that modulates and demodulates image data; a key switch unit that instructs readout, transmission, polling, etc. of received images; A still image video telephone device comprising: a DTMF generator connected to a telephone line to transmit non-image data; and a DTMF receiver connected to a telephone line to receive non-image data from the telephone line.