JPS6083464A - Communication system for drawing image signal - Google Patents

Abstract

PURPOSE:To improve transmission efficiency by storing data from an encoding means in a data storage means temporarily, and sending data out at a time when necessary. CONSTITUTION:Graphic information inputted through a graphic input means 10 is inputted to an input processing means 40, whose output coordinate data is encoded by an encoding means 50 for transmission and stored in the data storage means 140. Simultaneously, coordinate data from the input means 40 are inputted to a reproduction processing means 90 and displayed. When an indication for batch transmission is sent from a switch input means 120 at need after the graphic input operation is completed, the operation of an input processing means 40 and the encoding means 50 is stopped and a transmitting means 60 and a decoding means 80 are put in operation, and data stored in the data storage means 140 is sent out to an opponent side and also displayed on a display means 110.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Description of the field to which the invention pertains The present invention consists of: 1. Input of graphical information such as handwritten characters and figures; 2.
This relates to a communication method for graphic 1# information input in the display 1 communication system.

(2) Description of conventional technology An example of the configuration of a conventional system of this type is shown in FIG. 10
20 is a sampling means for sampling the X and Y coordinate outputs, 30 is a Bentouch detection means, 40 is an input processing means, and 50 is an encoding means.

60 is a transmission means, 80 is a decoding means for decoding the received data, 90 is a reproduction processing means for reproducing the graphic information from the input processing means 40 and the decoding means 80, and 100 is for storing the reproduced graphic information. 110 is a display means for displaying a graphic image; 120 is a switch input means; and 130 is a switch input analysis means. The solid lines in the figure indicate the flow of signals such as coordinate data, and the broken lines indicate the flow of control signals.

To operate this system, first the graphic input means 10
Enter the shape in . At this time, the bent touch detection means 30 detects the bent touch, and the sampling means 20 and the input processing means 4
Operate 0. The coordinate data inputted from the input processing means 40 is subjected to encoding processing for transmission by the encoding means 50, and sent to the line using the transmission means 60. In addition, in parallel with this, the coordinate data taken in from the input processing means 40 is subjected to appropriate arithmetic processing by the reproduction processing means 90.
The data is written in the area of the refresh memory 100 corresponding to the position input to the graphic input means 10.

Data sent from the line is received by the transmission means 60 and subjected to decoding processing by the decoding means 80. The decoded coordinate data is similarly subjected to arithmetic processing by the reproduction processing means 90 and written into the refresh memory 100.

The display means 110 reads graphic information from the refresh memory 100 and displays a graphic image.

Graphic information input from the graphic input means 10 in this manner is displayed as a graphic image on the display means of the partner system via the display means 110 and the line.

In other words, the display means 110 displays graphic information input from the local system and graphic information input from the partner system.

Input 1 Display 1 Possible functions of the communication system for the handwritten figure information of fangs 1 9 Drawing input 1 Displaying the figure input from the figure input means 10 as an image on the display means 110 Corresponding to the input point of the figure input means 10 A cursor display 9 indicating the display position of the display means 110 may be used, such as partial erase for erasing a part of the reproduced figure on the display means 110, and full erase for erasing the entire figure. These functions are instructed and selected by the switch input means 120, and are analyzed by the switch input analysis means 130 to control the operation of the system. These functions were used to communicate images between terminals.

However, this method of sequentially transmitting the coordinate information input by the graphic input means has a problem in that the transmission efficiency cannot be improved. For example, when inputting 9 handwritten figures, the necessary information can only be obtained while actually inputting them into the figure input means, but it is known that when inputting 9 characters, the period during which the hand is touched is about 50%. remaining 5
0chi is a wasted period. , f, ta1 Normally, drawing input is often done while thinking, and the communication line is held uselessly during this thinking period.

Furthermore, it has the disadvantage that it is impossible to send a drawn image of the same handwritten character figure to another destination.

(3) Purpose of the Invention The purpose of the present invention is to solve the above-mentioned drawbacks of the conventional method.For the second reason, a data storage means is provided, and the data from the encoding means is temporarily stored in the data storage means. It is designed so that it can be stored and sent out all at once if necessary. below.

The drawings will be explained in detail.

(4) Explanation of the structure and operation of the invention Figure 2 is a functional configuration diagram showing an embodiment of the present invention,
A data storage means 140 is added to the conventional configuration shown in FIG.

In operation, first, the switch input means 120 instructs a batch sending operation. In response to this, the switch input analysis means 130 causes the input processing means 40. Encoding means 50. Regeneration processing means 90. The data storage means 140 is operated. When a figure is input to the figure input means 1o, the Bentouch detection means 3o detects this, and the sampling means 20. The input processing means 4o is operated.

The coordinate data taken in from the input processing means 40 is subjected to encoding processing for transmission by the encoding means 50, and is stored and stored in the data storage means 140. In parallel with this, the coordinate data taken in from the input processing means 4o is subjected to appropriate arithmetic processing in the reproduction processing means 9°, and is stored in the refresh memory 100 corresponding to the position input to the graphic inputting means 1O. is written to the area of

The display means 110 reads graphic information from the refresh memory 100 and displays a graphic image.

What are the possible functions of the drawn image in the composition of Fang 2?

Similar to the fang 1 diagram, drawing/writing, cursor display 9 partial erasure, full erasure, etc. are listed. The graphic information input from the graphic input means 10 in this manner is as follows.

It is displayed on the display means 110 and is also accumulated and stored in the data storage means '140.

After the figure input is completed, switch input means 120 is used as necessary.
In response to this instruction, the switch input analysis means 130 sends an instruction to the input processing means 40° and the encoding means 5.
0 and instructs the reproduction processing means 90 to erase the entire refresh memory 100.

Once this is completed, the transmission means 60. The decoding means 80 is operated.

The data storage means 140 sends the stored data to the other party via the transmission means 60, and at the same time sends the data to the decoding means 80. The coordinate data decoded here is subjected to appropriate arithmetic processing by the reproduction processing means 90 and written into the refresh memory 100. Namely.

Graphic information for batch transmission is input from the graphic input means 10, stored in the data storage means 140, and displayed on the second display means 110.

When you have finished inputting, clear the display if necessary,
While sending it to the other party, it is displayed again on the display means 110.

If the switch input means 120 is used to instruct the entire screen to be erased during graphic input, the 1 display is cleared and the data in the data storage means 140 is also cleared.

When the batch sending is completed in this way, if you wish to continue drawing image communication, continue the communication as it is, or if you only want to send it unilaterally, use the switch input means 120 to instruct the end of the communication.

FIG. 3 shows an operation 72m chart regarding one embodiment.

In the operation mode input cycle, is there a batch sending instruction from the switch input means 120 in step α?

In step b, it is monitored whether there is a communication instruction. When there is a batch transmission instruction, a transition is made to batch transmission fBl. On the other hand.

When there is a communication instruction, the process transitions to 1 communication [C].

Batch sending (In B+, whether there is an instruction to cancel batch sending in step d from the switch input means 120, whether there is an entire erase instruction in step C, whether there is a communication instruction in step f, and whether there is a bend touch detection from the bend touch detection means 30 in step g) If there is an instruction to cancel the batch sending in step d, the process returns to operation mode input waiting (5). If a bend touch is detected in step g, the process moves to step h. In step 5, one figure Graphical information is taken in from the input means 10.

Data is stored in the data storage means 140 and reproduced and displayed on the second display means 110. and step i
Now we are monitoring the Bentouch detection signal.

Step h until there is no Ben touch detection signal.

Repeat step i. If a bent touch is detected in step (), the process moves to step d, and the switch input is monitored again in steps d to a.

When there is a communication instruction in step f, the process moves to step j. In step j, the reproduction display of the 1 display means 110 is cleared, and then in step j, the data storage means 140
While transmitting the data stored in the device to the other party, the second display means 110 reproduces and displays the data. When the processing in step 2 is completed, the process transitions to 2 communications (C1).

When the entire erase instruction is given in step e, step! Transition to. In step λ, the data that has been accumulated in the data storage means 140 so far is cleared, and the reproduction display on the 1 display means 110 is cleared. When the processing at step C is completed, the process moves to step d, and the switch inputs are again monitored from step d to step g.

Communication (In C1, the operation is the same as the conventional example in Fig. 1,
The drawn image communication is continued in step n until an instruction to terminate the communication is given in step m. When an instruction to end communication is given in a step or the like, communication is ended and the state shifts to operation mode input waiting (A).

FIG. 4 shows the input of handwritten characters and figures in the two embodiments.

Display 1 shows the hardware configuration of the communication system.

310 is a graphic input device (hereinafter referred to as a tablet), which corresponds to the graphic input means 10 in Figure A11. Here, tablets are defined as 1. For example, when pressure is applied to the writing input surface, a pressure detection type tablet outputs the position coordinates of the point where the pressure was applied, or a tablet that detects the coordinates from the electromagnetic field on the writing input surface. It is an electromagnetic induction type.

On the other hand, writing instruments of the above-mentioned pressure-detection type include ballpoint pens and pencils, and of the electromagnetic field type include ballpoint pens with magnetic field detection coils.

320 is an A/D converter, which corresponds to the sampling means 20 in FIG. Bent touch detection means 30° input processing means 40. Encoding means 50. Transmission means 60° decoding means 8
0. Regeneration processing means 90. Refresh memory 100.
The switch input analyzer Q, 130 is.

It consists of a microprocessor system.

Input processing means 40. Encoding means 50. Decoding means 80.
The reproduction processing means 90 is implemented by the microprocessor 340 using a program written in the ROM 330. 35
0 is the microprocessor (MP) 340 (7) 7-+1' memory (RAM) f. 360 is a serial/parallel conversion module (spps), which corresponds to the transmission means 60.

370 is a memory (MEM) that stores data for batch transmission.
), which corresponds to the data storage means 140. 380 corresponds to the switch input means 120, which may be a keyboard, a switch box, or the like. 390 is an input port, and based on the information taken in from this (bent touch detection, switch input), the microprocessor 340 controls the operation of the system, and corresponds to the bent touch detection means 30° switch input analysis means 130. . 400 is display means 1
For example, a CRT display device can be considered. 4
10 is a timing generation circuit.

This circuit generates timing for reading graphic information from the refresh memory 100 into the CRT 400.

Reference numeral 420 denotes a parallel-to-serial conversion circuit (P/S), and 1 is, for example, a shift register, which converts parallel data in the refresh memory 100 into serial data.

(5) Explanation of effects As explained above, if two methods of the present invention are used.

This method has the advantage that transmission efficiency can be improved compared to the conventional method of inputting graphics after a communication state is established. It also has the advantage that the same drawing data can be sent to different destinations as many times as necessary.

[Brief explanation of the drawing]

Figure 211 shows input 1 display of conventional handwritten figure information. Fig. 2 is a functional block diagram of a communication system; Fig. 3 is a functional block diagram of one embodiment of the present invention; Fig. 3 is an operational flowchart of the system in Fig. 2); Fig. g'4 is a diagram for realizing the system in Fig. 2. It is a hardware configuration diagram for. In the figure, 10 is a graphic input means, and 20j is a sampling means. 30 is a Bent touch detection means, and 40 is an input processing means. 50 is an encoding means, 60 is a transmission means, 80 is a decoding means, 90 is a reproduction processing means, 100 is a refresh memory,
110 is a display means, 120 is a switch input means, 130
Reference numeral 140 indicates a switch input analysis means, and 140 indicates a data storage means. 1υU Pre1 figure 3 figure 'f-4 figure

Claims (1)

[Scope of Claims] A graphic input means for extracting coordinate information of handwritten characters and figures, a means for sampling the X and Y coordinate outputs output from the graphic input means, and Bent-touch detection means for detecting Bent-touch; input processing means for taking sample values from the sampling means; encoding means for encoding coordinate data from the input processing means; a transmission means for transmitting coordinate data; a coordinate data storage means for storing coordinate data from the encoding means; a decoding means for decoding the coordinate data received by the transmission means; and reproduction processing means for reproducing the coordinate data from the input processing means and the coordinate data from the input processing means. a refresh memory that stores the reproduced graphic information;
a display means for reading figure information from the refresh memory and displaying the original handwritten input figure as an image; a switch input means; and a switch input analysis means for analyzing the switch input information and controlling the operation of the system. 1. A handwritten character/figure input 9 display 1 communication system comprising: a communication system for drawn image signals, characterized in that the figure information inputted from the figure input means is temporarily stored and stored and sent out all at once.