JPS63155861A - Picture communication equipment - Google Patents

Abstract

PURPOSE:To perform the transmission of a display picture and a coordinate value information, together with a sound or separately from the sound, in a short time by switching from a standard MODEM to a high speed MODEM at the time of the communication of the display picture or of the high speed communication of the coordinate value information. CONSTITUTION:The standard MODEM 8-1 is of 300 bps, and the high speed MODEM 8-2 is of 1200 bps or more, and the MODEM 8-2 can be switched and substituted for the standard MODEM 8-1 by a switch 12 at the time of the transmission of the display picture or of the high speed transmission of a band drawn pattern. A multiplex circuits 10-1, 10-2 with the sound are switched corresponding to the frequencies of the standard MODEM 8-1 and the high speed MODEM 8-2, when the data of the MODEM and the sound are communicated simultaneously. Besides, in the case of other than a simultaneous communication, a multiplexing can be omitted. Thus, the speed of the transmission can be changed so as to correspond to the contents of the transmission, and the high speed transmission of the display picture and the hand drawn pattern can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image communication device that communicates handwritten figures, input images from an image sensor, and audio.゛ [Prior Art] Figure 2 shows an example of the configuration of a conventional device that transmits and displays coordinate value information of hand-drawn figures, when a function for inputting and transmitting images from an image sensor is added. show. In this figure, numeral 1 denotes an input unit using an image sensor, such as a hand scanner or an image reader. 2 is a pad for inputting handwritten coordinates, and there are pressure sensitive types, electromagnetic induction types, etc. A display memory 3 is a memory for displaying images input from the input unit 1 and handwritten figures input from the pad 2. 4 is a main body control section, and pad 2. Input unit 11 controls the table display memory. 5 is CR
A display unit such as T displays the entire or part of the display memory 3. Reference numeral 6 denotes a communication control section, which consists of the following sections.

That is, 7 is a codec, which is a codec for the image on the display memory 3, a codec for coordinate value information input from the pad 2, and the like. 8 is a standard modem, and a 300 bit/second modem is used in standard terminals. 9 is NC
U, 10 is a multiplexing circuit that multiplexes voice and modem by frequency division. Note that 11 is a terminal device, for example a telephone. Further, the main body control section 4 and the communication control section 6 may be integrated.

(Problem to be Solved by the Invention) Conventionally, with this configuration, display images containing a large amount of information were sent at 300 bits/second using the standard modem 8, which resulted in a long transmission time. There was a drawback. In particular, when communicating simultaneously with voice, the voice and coordinate value information were transmitted simultaneously by frequency division, so the conventional standard modem 8 could not transmit more than 300 bits/second, making it impossible to shorten the transmission time. There was a problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image communication device capable of high-speed transmission of display images and coordinate value information by solving the conventional problem that it takes time to transmit display images and coordinate value information.

[Means for Solving the Problems] The image communication device according to the present invention includes a high-speed modem in addition to a standard modem for transmitting coordinate value information, and further has a high-speed modem for transmitting display images and high-speed communication of coordinate value information. It is equipped with a switching means for switching from a standard modem to a high-speed modem and transmitting it simultaneously with voice or alone.

[Effect]

In this invention, when communicating display images or coordinate value information at high speed, the standard modem is switched to the high speed modem, and the transmission is performed simultaneously with voice or alone in a short time.

〔Example〕

FIG. 1 is a diagram showing an embodiment of the present invention, and shows the circuit configuration of the device.

In this figure, 8-1 is a standard modem of 300 bits/second, and is a modem used for conventional transmission of coordinate value information, that is,
This is the same as 8 in FIG.

8-2 is a high-speed modem of 1200 bits/second or more,
When transmitting display images or high-speed transmission of handwritten figures, it is possible to switch between the standard modem 8-1 and the standard modem 8-1 by means of a switch 12, which is a switching means.

10-1. 10-2 is a multiplexing circuit with audio, and when performing simultaneous communication of modem data and audio, 8-'1.
It is designed to switch according to the frequency of the modem 8-2. Furthermore, if there is no simultaneous communication, it is also possible not to multiplex. Due to this structure, the transmission speed can be changed depending on the content of the transmission, and the handwritten figure in the display image 9 can be transmitted at a higher speed than in the past.

〔Effect of the invention〕

As explained above, this invention is equipped with a high-speed modem in addition to a standard modem, which is switched by a switching means, so that in addition to standard handwritten figure transmission, display image transmission and handwritten figure high-speed transmission can be performed at high speed. Since it is possible to send data at a high transmission speed, there is an advantage that handwritten figures, input images from an image sensor, and voice can be communicated in a short time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional handwritten figure communication device. In the figure, 1 is an input unit, 2 is a pad, 3 is a display memory, 4 is a main body control unit, 5 is a display unit, 6 is a communication control unit, 7 is a codec, 8 is a standard modem, 9 is an NCU, 10 is a multiplexer 11 is a terminal device, and 12 is a switch.

Claims (1)

[Claims] Input that stores the coordinate value information of a handwritten figure, transmits the coordinate value information simultaneously with voice or alone, and further reads the image by hand-feeding the obtained coordinate value information to a device that displays the handwritten figure. and inputs the image from the image sensor into the display memory, synthesizes the image in the display memory and the handwritten figure obtained from the coordinate value information to create a display image, and can communicate this display image. An image communication device with additional functions is equipped with a high-speed modem in addition to the standard modem for transmitting coordinate value information.
The image communication apparatus further comprises a switching means for switching the standard modem to a high-speed modem and transmitting the voice simultaneously or alone during the high-speed communication of display images or coordinate value information.