JPS60183624A - Data transmission system in handwritten graphic information transmission system - Google Patents

Abstract

PURPOSE:To improve remarkly the transmission efficiency by providing a selecting means for selecting data required for the reception side system from the data before transmission to transmit only the selected data thereby eliminating waste of data for transmission. CONSTITUTION:The selecting means 31 is provided between a coding means 9 and a data storage device 19. When an input analysis means 18 receives an instruction of partial erasure and outputs a control signal based thereupon, the means 31 outputs only coordinate data (data required for the reception side system) being the bases of rewrite of all coordinate data in the area surrounded by a closed curve inputted before the next control signal is given to logical 0, to the device 19, and the coordinate data of the closed curve is abolished and not outputted. When the means 18 receives data representing an instruction of simultaneous transmission, only the data required by the reception side is transmitted to a line 12 via a transmission means 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a data transmission method in a handwritten figure information transmission system that transmits graphic information of figures including handwritten characters and symbols.

[Technical background of the invention and its problems]

A conventional handwritten graphic information display system including a handwritten graphic information transmission system was constructed as shown in FIG. 1. In FIG. 1, 1 indicates a graphic input device. is for extracting coordinate value information of a handwritten figure, and consists of a figure input means 2, a sampling means 3, a Bent touch detection means 4, and an input processing means 5. When pressure is applied to
It uses a pressure detection method that outputs coordinate value data of the point where the pressure is applied. The ballpoint pen 6 is used to apply pressure to the input surface of the figure input means 20 by drawing a figure on the paper placed on the input surface of the figure input means 20. Bent touch detection means 4 is connected to the figure input means 2, and this Bent touch detection means 4 detects when pressure is applied to the writing input surface of the figure input means 2 (if there is a Bent touch).
, a signal output from the graphic input means 2 is input, and it is detected that a bend touch has been made. When detecting a bent touch, the bent touch detecting means 4 outputs a control signal instructing the sampling means 3 and the input processing means 5 to start operation,
The sampling means 3 and the input processing means 5 are made operable. Further, a sampling means 3 is connected to the graphic input means 2, and the sampling means 3 samples the analog coordinate value data outputted from the graphic input means 2 at a predetermined period, digitizes the data, and outputs the digitized data. vinegar/
The input processing means 5 is connected to the pulling means 3, and the input processing means 511. Upon receiving the coordinate value data output from the sampling means 3, it is checked whether or not this coordinate value data is appropriate as a coordinate value, and
When the coordinate value data suddenly becomes a discrete value, smoothing processing or the like is performed to correct the coordinate value data based on the previous coordinate value data. In addition, the input processing means 5#i
, based on the coordinate value data of the closed curve output from the sampling means 3 when a control signal is given from the input analysis means 18, which will be described later, in response to a command indicating partial deletion.
Fresh memory 15, which will be described later, is surrounded by this closed curve.
All the coordinate value data of the area within is set to logical “0” (“0” is
Create the coordinate value data that will be the basis for rewriting the data to indicate the background color when displayed, and output this.

A transmission device 7 and a processing device 8 are connected to the graphic input device 1 . The transmission device 7 consists of an encoding means 9, a decoding means IO, and a transmission means 11. The encoding means 9 is connected to the input processing means 5, encodes the coordinate value data output from the input processing means 5, and outputs the encoded data to the transmission means 11. The transmission means 11 includes a modem, modulates the carrier signal using the coordinate value data outputted from the encoding means 9, and outputs the modulated carrier signal to the U-line 12.

Further, the transmission means 1] receives the signal modulated by the coordinate value data via circuit #12, demodulates the signal, and decodes the signal to the decoding means 10.
Output to. The decoding means IO is connected to the transmission means 1 and also to the processing device 8, decodes the coordinate value data output from the transmission means 11, and outputs it to the processing device 8.

The processing device 8 interpolates the coordinate value data necessary for displaying the figure based on the acquired coordinate value data, and reproduces the coordinate value data necessary for displaying the figure. Consists of. The processing device 8 includes the input processing means 5
and the decoding means lO, and the display device 1
Connected to 4.

The reproduction processing means 13 performs interpolation and processing based on the coordinate value data output from the input processing means 5 or the decoding means 10.
The reproduced coordinate value data is output to the display device 14.

The display device 14 includes a refresh memory 15 and a display means 1.
It consists of 6. The coordinate value data output from the reproduction processing means 13 is written into the refresh memory 15.

This coordinate value data is read out (refreshed) at predetermined cycles. A display means 16 is connected to the refresh memory 15. The display means 16 is a CRT.
(Cathode Ra)r Tube).

The coordinate value data stored in the refresh memory 15 is
The figure is read out to the display means 16, and the figure is displayed on the display means 16.

17 trX, s indicates a switch input means, and the operator uses this switch input means 17 to input kernel display, partial deletion, all deletion, and batch transmission.

You can input commands to start bulk transmission, start written communication, and end transmission. The switch input means 17 is connected to the input analysis means 18 . The input analysis means 18 analyzes the data output from the switch input means 17 to determine which command the data indicates. Based on the analysis result, the human power analysis means 18 determines the corresponding control ID++.
The number m is manually processed by the processing means 5, the encoding means 9, and the signalization means io.
, transmission means II, and output to the reproduction processing stage 13.

＋■ of this kind of handwritten figure information display system of 9L US
In the graphical information transmission system, coordinate value data was transmitted through a line 2 in which the data transmitter i11 and the data receiver were connected. However, the transmission efficiency of coordinate value data was poor due to the following reasons. First, when a handwritten figure is input manually, the period during which the ballpoint pen 6 presses the memorized side of the figure input means 2 is 30% to 30% of the input period.
It is known that 50% and the remaining 70% to 50%
% of the time is wasted time, which reduces transmission efficiency. Second, when drawing a figure on the writing input surface of the figure input means 2, the figure is often drawn while thinking.

For this reason, even if the sm input screen is pressed during the period under consideration, no actual input is made to the figure input means 2, and this period under consideration becomes wasted time.
This results in poor transmission efficiency.

Therefore, the data storage device 1 shown by the dashed line in FIG.
It is conceivable to provide 9. The data storage device 19 is
It is connected to encoding means 9, decoding means 10, and transmission means 11. The data storage device 19 also includes an input analysis means 18.
It receives control signals from the controller, stores coordinate value data, and outputs the stored zasosen data. That is, when a command for batch transmission is input from the switch input means 17, coordinate value data is accumulated, and when a command to start batch transmission is input, the accumulated coordinate value data is stored. Sending takes place. Further, the data storage device 19
When receiving a control signal output from the input analysis means 18 when a command to erase all data is inputted from the switch input means 17, the stored coordinate value data is cleared.

In such a handwritten type 1 information transmission system,
When a command for batch transmission is input from the f-touch input means 17, the input analysis means 18 outputs a control signal in accordance with the data of the command. 1'''-'';': l+i+'j
'-Evening is carried out through the sampling means 3 and the input processing means 5.
．． -r, ,? :])′+ conversion means 9 and paleoprocessing method 1:
It is input to the QIJ, outputted from the 91 conversion means 9, and stored as data-like debt 119.\\.゛Also, in the reproduction processor j, 3213, interpolation and reproduction are performed based on the input coordinate value data. The resulting coordinate value data is
4B is written into Riff I/Nosh Memo January 5, and is further outputted to display-1 stage 16 (7), thereby displaying the figure on display means 16.

Next, when a command to start batch transmission is input from the switch input means 17, the input analysis means 18 outputs a control signal corresponding to the data of the command. As a result, 16 pieces of data are outputted from the data storage device 19 to the forwarding means 11 and the decoding means IO. The coordinate value data t output to the transmission means 11 is modulated and sent to the line 1.
On the other hand, in parallel with the above transmission, the data is outputted from the data storage section fC119 and reaches the fsummerization means 10. )
It is output to the raw processing means 13. In the reproduction processing means 13,
Interpolation and reproduction are performed based on the coordinate value data.

The resulting coordinate value data is written into the refresh memory 15 and further output to the display means 16. As a result, the same figure as the figure reproduced from the coordinate value data transmitted from the transmission means 11 is displayed on the display means 16 in parallel with the transmission.

According to such a handwritten figure tVj information transmission system,
Accumulate coordinate value data to be transmitted before connecting the line,
Since this can be transmitted all at once after the line is connected, transmission efficiency is improved compared to conventional systems. However, in this method of transmitting all the data input from the graphic input means 2, there are factors that hinder the improvement of transmission efficiency.

First of all, it is not necessary to transmit the coordinate data related to the cursor display when the data is transmitted by batch transmission. In the case that
jl′! on the displayed figure from one system to the other! It is necessary to temporarily announce a fixed location here and there.

In addition, this cursor display means that the coordinate value data of a figure A is transmitted from one system to the other system, and the same figure is displayed in both systems, and another figure B is overwritten on this displayed figure A. This is effective when performing the following in the other system. Since the above-mentioned figure A is not written on the writing input surface of the other system, input to display the cursor is performed before inputting figure B, and after finding the desired position, figure B is input. It is. However, with the method of accumulating coordinate value data and then transmitting it all at once, it is not possible to have a meeting between two systems and simultaneously inform one system of the required position to the other system. However, it is possible for the user to input data unnecessarily.

It is completely meaningless even if such data for displaying a cursor is transmitted to the receiving side by batch transmission and displayed on the display means of the receiving side. However, since the cursor display function for meetings and the like is a necessary function as described above, it must be enabled when the batch transmission mode is canceled.

Furthermore, when displaying a cursor to superimpose figures, the coordinate value data related to the cursor display is useful for the input system, but it is useless for the other system. Humps transmitting value data are wasteful.

Also, when considering partial erasure, it is sufficient for the partner system to receive coordinate value data that can erase figures within the area to be partially erased. For example, as a partial erasure method,
There is a method for inputting a closed curve indicating an area to be partially erased. This closed curve is important for a system that performs partial elimination. This is because by displaying the area to be erased using this closed curve, it is possible to confirm whether or not the area to be erased is correctly partially erased. However, due to batch transmission, it is meaningless for the system receiving the coordinate data even if the coordinate data of the closed curve described above is transmitted, and in the end, the coordinate data necessary for the receiving side is transferred to the transmitting side. The system inputs solid data, performs partial erasure, etc., and finally only the coordinate value data is the source for displaying the figure displayed on the display means 16. However,
In the conventional handwritten figure information transmission system equipped with the data storage device 19, the coordinate value data inputted from the figure input means 2 is all stored in the data storage device 19 without being sorted, so that the coordinate value data of closed curves are also data. It was stored in the storage device 19.

Transmitting all of the coordinate value data accumulated in this manner means transmitting unnecessary coordinate value data, which impedes improvement in transmission efficiency.

The meaning of not transmitting unnecessary coordinate value data and improving transmission efficiency is that if the line 12 is a telephone line and the telephone set is connected to the handwritten figure information transmission system as shown in FIG. especially large.

In FIG. 2, 21 indicates a modem. This modem 21
is included in the transmission means 11 in FIG. modem 21
, a band pass filter (BPF) 22A.

22B is connected. The band pass filter 22A is a band pass filter for data output, and the band pass filter 22B is a band 4 filter for data input. Bandpass filter/22A, adder 23
It is connected to the hybrid circuit U via the. Moreover, the bandpass filter 22B is connected to the hybrid circuit. Furthermore, a telephone line 25 (corresponding to circuit a12 in FIG. 1) is connected to the hybrid circuit. The hybrid circuits pass the data output from the adder to the telephone line δ side, and pass the data received via the telephone line section to the bandpass filter 22.
It is passed to the B side. The line between the bandpass filter 22B and the hybrid circuit has BEF (Ban
d Elimination Filter) 26
B is connected to the adder β, and B E F 26A is connected to the adder β. A hybrid circuit n is connected to BEF26A and BEF26B, and a telephone side is connected to hybrid circuit 4. Hybrid circuit n is BEF2
The data input via 6B is passed to the telephone 4 side, and the data output from the telephone series is passed to the BEF 26 side.

Here, the band of the telephone line is from 0.3 KHz to 3.4 KHz.
KHz, but more than half of this band, starting from 0.3 KHz, is used by telephone arrays. Therefore, the band that can be used by the handwritten graphic information transmission system is extremely narrow, and only a low-speed modem can be used as the modem 21. For this reason, the transmission speed through the telephone line δ is slow, and it is desirable to improve transmission efficiency by avoiding transmitting unnecessary data as much as possible.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a data transmission method in a hand-to-shape graphic information transmission system that can improve transmission efficiency more than before.

[Summary of the invention]

Therefore, in the present invention, the configuration of the conventional handwritten figure information transmission system is provided with a selection means for selecting data necessary for the receiving side system from the data before being transmitted. This achieves the above objective by transmitting only the relevant data.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Figure j1!3 is a program diagram of an embodiment of the present invention.

In this figure, the same components as in FIG. 1 are given the same reference numerals, and their explanations will be omitted. 31 indicates selection means. This selection means 31 includes the encoding means 9 and the data storage device [
19. Further, the selection means 31 is configured to receive a control signal from the input analysis means 18. From the switch input means 17, commands such as batch transmission, batch transmission start, written communication transmission start, transmission end, cursor display, partial deletion, and total deletion can be issued. be. When the input analysis means 18 receives data indicating a command to display a cursor and outputs a control signal based on the data, the selection means 31 discards the coordinate value data output from the encoding means 9 thereafter. ,
It is not output to the data storage device 19. Further, when the input analysis means 18 receives data indicating a command for partial deletion,
When a control signal based on this is output, the selection means 3
1 is the source for rewriting all the coordinate value data of the area surrounded by the input closed curve to logic "0" before the next control signal is given (when the area for partial erasure is determined). Only the coordinate value data is output to the data storage device 19, and the coordinate value data of the closed curve is discarded and not output.

Further, when the input analysis means 18 receives data indicating a command to erase all data and outputs a control signal based on the data, the selection means 31 outputs the data for erasing all data to the data storage device 19. In response to this, the data storage device 19 erases (clears) all the stored data. Further, when the input analysis means 18 receives data indicating a command for batch transmission and outputs a control signal based on the data, the selection means 31 outputs the input coordinate value data as is to the data storage device 19. In this handwritten figure information display system, after the data is transmitted by batch transmission, the system automatically shifts to the book transmission mode. For this reason, if human power is applied from the graphic human power means 2 after a figure created on the basis of the coordinate value data transmitted by the batch transmission is displayed on the display means 16, the user's seat corresponding to this input is The great value data is output from the encoding means 9 to the transmission means 11 and is not output to the selection means 31.

In the handwritten figure information display system i configured as described above, when a command to start writing communication transmission is input from the switch input means 17, the selection means 31 selects the data storage!
Since the R device 19 does not operate and the operation of the handwritten graphic information display system is the same as that described using FIG. 1, a description of this operation will be omitted.

In this handwritten figure information display system, the operation of the handwritten figure information display system when a command for batch transmission is input from the switch input means 17 will be described.

First, when a command for batch transmission is input from the switch input means 17, data corresponding to 2=J is input from the switch input means 17 to the input analysis means 18-.
\It will be ejected. The input analysis means 18 analyzes the above data and outputs a message in response to the data indicating the command for batch transmission. As a result, the input processing means 5.9
No. 1 conversion means 9, reproduction processing means 13, selected bow/stage: 31,
The data storage device 19 becomes operational, whereupon:
When a figure is drawn with the ballpoint pen 6 on the paper placed on the writing input surface of the figure drawing means 2, the pen touch detection means 4 detects the pen down at the moment the pen goes down. Therefore, when the touch detection means 4 outputs a control signal, the sampling means 3 starts operating, and the input processing means 5 waits for input. When the coordinate value data is continuously output from the graphic processing means 2, the sampling means 3t/'i takes in the data at a predetermined period, digitizes it, and outputs it to the input processing means 5. The input processing means 5 performs a data check on the given coordinate value data, performs smoothing processing, and outputs the data. The output coordinate data is given to the encoding means 9 and the reproduction processing means 13. The encoding means 9 encodes the given coordinate value data and outputs it to the selection means 31. In parallel with this, the reproduction processing means 13 performs interpolation based on the given coordinate value data, reproduces the coordinate value data necessary for displaying the input figure, and stores this coordinate value data in the 7V storage memory. Output to 15. The refresh memory 15 stores the coordinate value data output from the reproduction processing means 13, and performs reading at a predetermined timing.

The display means 16 reads the coordinate value data from the refresh memo January 5 and displays the figure. On the other hand, encoding means 9
The coordinate value data outputted from the selector 31 is directly outputted to the data storage device u19. The data storage device 19 stores this coordinate value data.

Suppose that a request to partially or completely erase the cursor display 5 is made while inputting such graphic information.

At this time, each command is inputted from the switch input means 17. Then, data corresponding to this command is output from the switch input means 17 to the input analysis means 18. The input analysis means 18 analyzes the above-mentioned data and outputs a control signal corresponding to the data of each command. 1. If the above-mentioned data is data indicating a command to display a cursor, 4J) The raw processing means 13 , after receiving the control signal 14y, the coordinate value data output from the input processing means 5 is processed as coordinate value data indicating a cursor. Accordingly, the coordinate value data of the cursor is stored in the refresh memory, and the cursor is displayed on the display means j6. On the other hand, the cursor coordinate value data outputted from the input processing means 5 to the encoding means 9 is encoded and outputted to the selection means 3J. Since the selection means 31 has received all the control signals from the input analysis means 18 and fully understands that the coordinate value data related to the cursor display will be given, the selection means 31 selects the given coordinate value data and does not output it. Therefore, the data at the cursor position n(+6) will not be stored in the data storage device 9. Also, if the data output from the switch input means 17 is data indicating partial erasure, The input analysis means 8 outputs a corresponding control signal.The input processing means 51i receives this control signal and processes the coordinate value data outputted from the sampling means 3 as coordinate value data indicating the area to be partially erased. do.

Based on the coordinate value data of the closed curve, the input processing means 5 generates a source for rewriting all the coordinate value data of the area surrounded by the closed curve into logical roJ (rOJ corresponds to the background color of the display). The coordinate value data of the closed curve and the created coordinate value data are output. Receiving this coordinate value data, the reproduction processing means 13 performs interpolation to reproduce the coordinate value data of the closed curve, and also serves as the basis for rewriting all the coordinate value data of the area surrounded by this closed curve to logic "0". Based on the coordinate value data, coordinate value data is created in which all the coordinate value data of the corresponding area are set to logic "0". These coordinate value data are sequentially outputted to the seven-reset memory 15 and stored in the refresh memory 15. The display means 16 reads out the coordinate value data from the refresh memory 15 and displays it. Therefore, after the closed curve is displayed on display means 6, the figures within the closed curve including the closed curve are erased. In parallel with this, the coordinate value data outputted from the input processing means 5 to the encoding means 9 is encoded and outputted to the selection means 31. The selection means 31 receives a control signal from the input analysis means 18 and understands that coordinate value data regarding partial erasure will be provided. Therefore, the selection means 31
Removes the coordinate value data of the closed curve (erasure area display data) from the given coordinate value data, and passes only the coordinate value data that is the source for rewriting all the coordinate value data of the area surrounded by the closed curve into logical rOJ. let Based on the ratio, the coordinate value data that is the source for the above-mentioned rewriting is stored in one data storage device yIt19. Furthermore, if the data output from the switch input means 17 is data indicating that all data should be erased, the input analysis means 18 outputs a corresponding control signal. Reproduction processing means 13 that received this control signal
outputs coordinate value data in which all the coordinate value data in the refresh memory 15 are set to logic "0". For this,
7. In the memory 15, there is a logic r
The OJ coordinate value data is stored, and the nine figures displayed on the display means 16 are erased. In parallel with this, the data storage device 19, which has been given the control signal, clears the stored coordinate value data.

In this way, various commands are input from the switch input means 17, coordinate value data are input from the figure input means 2, and finally the desired figure is displayed on the display means 16.
, the corresponding coordinate value data is stored in the data storage device 19. Therefore, when a command to start batch transmission is input from the switch input means 17,
The input analysis means 18 that receives the data indicating this command outputs a control signal based on the data. Then, the data storage device 19 receives this and outputs the stored coordinate value data to the transmission means 11 and the decoding means 10. The transmission means 11 modulates the input coordinate value data and transmits it to the line 12.
is transmitted to the other party via. In parallel with this, the reproduction processing means 13 that has received the control signal outputs coordinate value data so that the entire area of the 7-ressie memory 15 becomes logical rOJ. As a result, the entire area of the 7-receipt memory 15 is cleared, and the figure displayed on the display means 16 is erased. On the other hand, the coordinate value data given to the decoding means 1O is decoded and output to the reproduction processing means 13. The reproduction processing means 13 performs interpolation based on the received coordinate value data, reproduces the coordinates (+5 data) of the figure based on the transmitted coordinate value data, and outputs this coordinate value data to the refresh memory 15. The above coordinate value data is stored in the refresh memory 15, and this coordinate value data is read out to the display means 16.

Therefore, the display means 16 displays a graphic based on the coordinate value data currently being sent out from the transmission means 11.

In this manner, when it is desired to continue writing communication after data transmission is completed, the writing transmission operation mode is automatically set, so there is no need to perform any input from the switch input means 17. Furthermore, if only one-sided transmission is desired, a command to end the transmission may be inputted from the switch input means 17.

As a result, each part of the handwritten figure information display system
Stop operation.

As described above, the handwritten figure information display system shown in the block diagram is actually configured as shown in FIG. 4.

In FIG. 4, 41 indicates a microprocessor.

The microprocessor 41 connects to the ROM via a bus 42.
43, RAM 44, A/D converter 45, input port 46, S/P-P/S converter 47, data memory, gate 49, and address switch I. Further, the microprocessor 4] has a read/write signal line 51.
The read/write signal line 51 is connected to the above-mentioned parts through the
You can access each part using the signals provided. A tablet 53 is connected to the A/D converter 45 and the input boat 46, and a switch box fixture is connected to the input boat 46. The line 12 is connected to the S/P/P/S converter 47 . The audience indicates a timing generation circuit. An address switch 50 and a group of P/S converters are connected to the timing generation circuit I, and a refresh memory 52 is connected between the address switchers.

Furthermore, the refresh memory 52 has a gate 49.1]
/S converter 56 is connected, and
The converter 50 includes CR'I' 5? 3, the ROM43 and JtAM44 are the main memory of the microprocessor v41, and the microprocessor 4 is connected to
ROM, operates based on the program in 43, and RA
1, using M.14 as a working register,
Tablet 53I'i, not shown) 1) Press the power side of the pen 2) Ballpoint pen (when medium pressure is applied, the analog 1! )and,
Outputs Cheetah Z and Bentouch gold. Accordingly, this corresponds to the graphic input element 1 and 2 in the tableno l-53k, 'l':423 diagram. A/1] The converter 45 is
It digitizes the standstill data output from the tablet 53, and corresponds to the one-link link means 3 in FIG. '!i
do. In addition, 10 input boats, Microgrouse nJ4
1 is used when taking in data indicating a manually input command from the switch box 51. The switch box 54 corresponds to the switch input means 17 in FIG. 3, and is capable of inputting each command mentioned in the explanation of the switch manual means 17. The S/P-P/S converter 47 includes functions of 1-white parallel-to-tally conversion and parallel-to-serial conversion, and a modem function, and corresponds to the transmission means H in FIG. 3. Data memory 48
is for storing coordinate value data that is to be transmitted all at once, and corresponds to the data storage device (h19) in FIG. The coordinate value data is read out through all the gates 49.The refresh memory 52 is still
The coordinate value data extracted from
Converter 56 is provided. The gate 49 is a 3-state buffer, which is switched by a signal on the read/write signal line 51 supplied from the microprocessor 4, so that the coordinate i+t in the refresh memory 52 is changed.
The route from which S data is read is switched. The address is changed from the refresh memory 52 to the microprocessor 4L or the timing generation circuit 55 via the address switch (3). The address f (7-microprocessor 1j is also given, or it is given from the timing generation circuit 55,..., the microprocessor 4J is the address switcher) -I wo ee) read/write is also No. 11 &! It is controlled by the signal No. 51. refresh memory 5
2)Y'. Mark 1] 11 data is))
/S converter 56 is reached, timing generation 11 old i:
The timing check output from % 55 can be synchronized with ``I tsuk'' and converted to serial data, Cit T 57
1, where the refresher output 52 is output to
Condolences: Refresh memo of 3 figures corresponds to January 5th, P/S
The converter 56 and CR1' 57 are shown in the table in FIG.
Means 11i j' (corresponding to 3, also micro 70 series old! t,, based on the program in ROJvI. The functions of the means 9, the decoding means 10, the reproduction processing means 13, the input portion 411 means 18, and the selector !931 are executed.

Next, the operation of the handwritten figure 1# information display system configured as described above will be explained according to the flowcharts shown in FIGS. 5 to 8. The program of this flowchart is stored in the Iζ0M43 as described above.

First, when the first source of the handwritten figure information display system is turned on, the microprocessor 41 (c) waits for input of an operation mode according to the program shown in the flowchart shown in FIG.
It is determined whether or not a command for batch transmission has been manually issued from the switch box 54 via the bus 112 and the input port 46. Here, if a command for batch transmission has not been input, the process branches to NO and proceeds to step 102, where a command to start written communication transmission is sent from the switch box 54 via the microprocessor 41H, bus 42, and input boat 46. Determine whether a command has been input. Here, if the command to transmit the written message has not been manually issued, the process branches to NO and returns to step 2O1, whereupon the microprocessor 41 continues the loop operation according to the flowchart of FIG. During this loop operation, when a command for batch transmission is input from the switch box 54, the microprocessor 4 branches to YES in step 101, and the flowchart in the batch transmission operation mode shown in FIG. Move on to program execution. Further, during the above loop operation, when a command to start written communication transmission is inputted from the switch box diagram, the microprocessor 41 branches to YES in step 102 and switches to the transmission operation mode to pli K7 shown in FIG. Shift to execution of the program in the flowchart.

Next, assuming that the branch is YES in step 101,
Full operation explanation continues. First, in step 201 of FIG.
By determining whether or not a command to cancel the batch transmission has been inputted, it is determined whether the batch transmission start mode should be executed subsequently.

Here, if a command to cancel the batch transmission has not been inputted from the switch box diagram, branch to NO and proceed to step 202; if a command to cancel the batch transmission has been inputted from the switch box 54, go to YES. branch,
The program returns to the 70-chart program waiting for input of the operation mode in FIG. In the above, when branching to NO and proceeding to step 202, the microprocessor 41
From 4, commands for drawing operation instructions (commands for instructing what the next drawing is for, commands for displaying the cursor, commands for partially erasing, commands for erasing all) However, it is determined whether or not the command "No drawing is performed" accompanying the command to erase all has been input. If not, the process branches to NO and proceeds to step 203. In step 203, the microprocessor 4 determines whether a command to start batch transmission has been input from the switch box 54.Here,
If a command to start batch transmission has not been input from the switch box 54, the process branches to NO and proceeds to step 204. In step 204, the microprocessor 4]
is connected to the tablet 5 via the bus 42 and the input port 46.
: From 3, it is determined whether data indicating a bent touch has been output. Here, if there is no touch, the process branches to NO and returns to step 201. Thus, step 20
While the loop operation continues from step 1 to step 204 and back again to step 201, the switch box 5
When a drawing operation instruction command is input from step 4, step 2
The process branches to YES at step 02 and proceeds to step 205. In step 205, the microprocessor 41 analyzes the drawing operation instruction command received via the bus 11!2. At this time, all +
When the command is to erase 9B, the microprocessor 41 clears the data memory 48 (for example, writes coordinate value data of logic "0" to the entire area), opens the gate 49, and switches the address. The address of the device 5o bus 1211111 is suppressed so that it can pass, and the refref.../near 17ri 52-\address is given, and the coordinate value f-y of the logic 10J is 1lj- from the gate 19.
By reading the data, the refresh memory 52 is cleared. By doing this, the display on CR'l'' 57 is erased, and the coordinates 11-1 data stored in the data memory 48 are also erased. At step 205, When the above-mentioned all deletion operation is completed, or when the analysis result indicates that all deletion is necessary, the loop operation from step 201 continues. When the data indicating the bent touch is output, the microprocessor 41 connects the bus 42 and the input port 46.
Receive this via , and answer YES at step 204
The process branches to step 206. In step 206, the microprocessor 4' performs the multiplication of the coordinate value data and the necessary display, and proceeds to step 207, where it checks whether or not input has been interrupted due to no longer being able to obtain data indicating a bent touch.3. Here, unless the input is interrupted (pen-up), the process returns to step 206 and continues the operation; if the input is interrupted, the process branches to YES in step 207 and returns to step 201.

Here, the microprocessor v-4 in step 206
The details of the operation in step 1 will be explained with reference to the flowchart in FIG. First, in step 301, the microprocessor 4
1, it is determined whether or not a drawing operation instruction command has been input (whether or not the process branches to YES at step 202). If no drawing operation instruction command has been input, the process branches to NO and proceeds to step 302. In step 302, the microprocessor 41 receives the coordinate value data output from the tablet 5; 3 by activating the A/IJ converter 45, performs data processing, smoothing, interpolation, and displays a figure. Perform all possible coordinate value data reproduction. The microprocessor 4 writes the reproduced coordinates i1i+data into the refresh memory 52 via the bus 42 and gate 49'ff. At this time, the microprocessor 41 connects the bus 42 to the address switch (capital).
It is necessary to refresh the address via the memory 52.
1, the refresh memory 52
The data in the upper ML (m) is written in parallel by the address given from the timing generation circuit 55 to the refresh memory 52 via the address switching circuit.
t is squeezed out. The extracted coordinate value data is converted into serial data by the P/S converter 56 and transferred to the CRT 5.
7 is output. As a result, the figure input from the tablet 53 is displayed on the CR'I' 57. on the other hand,
The microprocessor 41 encodes the seat value data before interpolation and stores it in the data memory 48 via the bus 42. After completing such processing, the microprocessor 4 proceeds to step 207 in FIG.

When a drawing operation instruction command is input, the process branches to YES in step 301 and proceeds to step 303. In step 303, the microprocessor 4 determines whether the analysis result in step 205K of FIG. 6 is an instruction to display a cursor. here,
If the command is to display a cursor, the process branches to YES and proceeds to step 304.

In step 304, the microprocessor 4]
The coordinate value data outputted from the tablet 53 is received via the /D converter 45, and after data checking and smoothing are performed, interpolation is performed and the coordinate value data on which a cursor can be displayed is reproduced. The microprocessor 4J transfers the reproduced coordinate value data to the bus 42.
, and is written to the receipt memory 52 via the gate 49, and if necessary, rewriting for displaying a link is also performed. At this time, the microprocessor 4J
Address from! , IJ converter! 5I) 'fr: Gives the necessary address to the refresh memory 52 via. Also,
The coordinate value data in the refresh memory 52 is also read out in parallel at the time of the above-mentioned failure by the address given to the history memory 52 by passing between the address switchers from the timing generation circuit. The read coordinate value data is converted into serial data by the P/S converter 56 and output to the CIζT 57. As a result,
At CE<T 57, a cursor is displayed together with a figure corresponding to the coordinate value data in the refresh memory 52. At this time, the microprocessor 41 does not store coordinate value data for cursor display in the data memory 18. After completing this process, the microprocessor 4
1 proceeds to step 207 in FIG.

In step 303, if the analysis result in step 205 of FIG. 6 is not a command to display a cursor, the process branches to NO and proceeds to step 305. In step 305, it is determined whether or not the analysis result in step 205 of FIG. 6 is a command for partial deletion. Here, if the instruction is for partial erasure, the process branches to YES and proceeds to step 306. In step 306,
The microprocessor 41 receives the coordinate value data output from the tablet via the A/D converter 45, performs data checking and smoothing, and then performs interpolation to display a closed curve indicating the area to be partially erased. Let's play back the possible coordinate value data. Furthermore, the microprocessor 4 creates coordinate value data that becomes the basis for rewriting all the coordinate value data of the area surrounded by the closed curve to logic "0" based on the coordinate value data output from the tablet 53. Furthermore, this coordinate value data is interpolated to create coordinate value data in which all the coordinate value data of the area surrounded by the closed curve are set to logical "0". The microprocessor 41 writes the reproduced coordinate value data and the created logical "0" coordinate value data to the refresh memory 52 via the bus 42 and gate 49. At this time, the microprocessor 41 provides the necessary address to the refresh memory 52 from the bus 42 via the address switch. Furthermore, even during the above-mentioned writing, the data in the refresh memory 52 is transferred from the timing generation circuit group to the refresh memory 52 via an address switch (supply) in parallel.
It is read by the address given to . The read coordinate value data is converted into serial data by a P/S converter and output to the CRT 57. As a result, a closed curve indicating the partially erased area is displayed on the CRT 57 together with a figure corresponding to the coordinate value data in the refresh memory 52, and furthermore, the figure in the partially erased area including this closed curve is erased. In parallel with the above operation, the microprocessor 41 erases only the original coordinate value data C87 (in step 306 in the diagram), which is the source coordinate value data for rewriting all the coordinate value data in the area surrounded by the closed curve to logic "0" (erased data string). is encoded and sent to data memory 48 via bus 42.
and stored in the data memory 48. After completing such processing, the microprocessor 4 proceeds to step 207 in FIG. If it is determined in step 305 that the instruction is not for partial erasure, the process branches to NO.
Proceed to step 207 in FIG.

According to this flowchart, step 2 in FIG.
As long as it is analyzed in step 05 that there is an instruction for partial erasure, the microprocessor 41 performs steps 305 and 306, assuming that this is an input for partial erasure. In other words, even if the closed curve indicating the region of partial deletion is not drawn as expected, the input of this closed curve is treated as valid. However, in practice, for example, the switch box 54 (in FIG. 3, the switch input means 17
), in addition to the command to partially erase, it is possible to input valid and invalid commands, and only the coordinate value data of the closed curve inputted immediately before the valid command is input, and the "Erase" command in step 306 is input. It performs the processing of "data string accumulation". Therefore, if you draw a closed curve by mistake,
By inputting an invalidation command, the display of the closed curve is erased, and the erased data string is neither encoded nor stored in the data memory 48.

During the loop operation from step 201 to step 204 in FIG. 46, the data corresponding to the above command is received from the switch box, and the process branches to YES in step 203 to proceed to step 208. In step 208, the microprocessor 41 writes logic "0" data to the entire area of the refresh memory 52 via the bus 42 and gate 49. At this time, the microprocessor 41 provides a necessary address from the bus 42 to the refresh memory 52 via an address switch. Also, the data in the refresh memory 52 is read out in parallel at the time of the above writing using the address given to the refresh memory 52 from the timing generation circuit group via the address switch I. Since this read data is logic "0", it is given to the CRT 57 as serial data via the P/S converter, but the display on the CRT 57 is cleared. When this step 208 is completed, the process advances to step 209. The microprocessor 4 reads out the coordinate value data stored in the data memory 48 and transfers it to the bus 4.
2 to the S/P/P/S converter 47.

This coordinate value data is made into serial data, modulated, and transmitted to the other party via the line 12. In parallel with this, the microprocessor 4] stores data memory 4
The coordinate value data read from 8 is decoded and sent to bus 42,
Write to refresh memory 52 via gate 49. In parallel with this writing, the timing generation circuit 55 sends data to the refresh memory 5 via the address switch.
2 address is given, and data is read out. The read coordinate value data is output to the P/S converter winch, where it is converted into serial data, and further converted into C
Output to RT57. As a result, the CRT 57 displays a graphic based on the currently transmitted coordinate value data i. When this step 209 is completed, the program proceeds to the flowchart shown in FIG. 8 for the Todan transmission operation mode.

Next, referring to FIG. 8, the operation of the microprocessor 4 in the written communication transmission operation mode will be described. This 'il'k
In the i4i transmission operation mode, first, in step 401, the microprocessor 4 connects the bus 42 and the input port 4.
6, it is checked whether a command to end the transmission has been inputted from the switch box 54, and it is determined whether or not to continue operating in this mode. Here, when a command to end transmission is input from the switch box diagram,
It branches to YES and returns to the program of chart 70, which waits for input of the operation mode shown in FIG. If not, the process branches to NO and proceeds to step 402. In step 402, the microprocessor 4 performs a written message transmission operation. The microprocessor 4J inputs data indicating the Bentouch output from the tablet 53 to the input port 46 and the bus 42.
Receive through and know when to start inputting. Therefore, the microprocessor 4 receives the coordinate eclipse data output from the tablet 53 via the A/D converter 45 and the bus 42. This coordinate (+white data, microprocessor 4)
is encoded and interpolated to create coordinate value data that can be used to display a figure. The encoded coordinate value data is output to the S/P-P/S converter 47 via the bus 42 and transmitted to the other party. Further, coordinate value data that can be used to display a figure is written to the refresh memory 52 via the bus 42 and 49/c. Operation when encoded coordinate one-dimensional data is transmitted and written to the refresh memory 52/
The operation of displaying a figure based on the ζ coordinate value data on the CRT 57 has already been described, so it will be omitted here.

Further, the coordinate value data sent from the other party via the line J2 is demodulated by the S/P-P/S converter 47 to become parallel data, and is taken into the microphone o processor 41 via the bus 42. Microprocessor 4] is
This coordinate value data is decoded and written to refresh memory 52 via bus 42 and gate 49. Below, the operation of displaying a figure based on the coordinate value data in the refresh memory 52 on the CRT 57 has already been described.
It is omitted here.

In this way, in the handwritten figure IN information transmission system of the handwritten figure information display system, only the data necessary for the receiving side is transmitted, so that the transmission efficiency can be improved.

In the embodiment, it is assumed that the selection means 31 is 4 in the number of 10 steps 9.
However, before the data is transmitted to the receiver 1g side, any number of Ij2 connections may be made as long as the necessary data can be selected.

[Efficacy of invention]

As explained above, (rc 1) In the present invention, when transmitting data in bulk, only the data necessary for received (tS(II!l) is selected and transmitted, so the data to be transmitted) There is nothing wasted and the transmission efficiency is not significantly improved l) Can the entire system be used efficiently?() For this reason, the transmission band is Even in cases where only low-speed modems can be used due to narrow spaces, short-term transmission allows
This is extremely effective as it enables data transmission regarding the display of information.

[Brief explanation of drawings]

Figure 1 is a block diagram of a conventional handwritten figure information display system including a transmission system, Figure 2 is a block diagram of the main parts of a handwritten figure information transmission system when the line is a telephone line, and Figure 3 4 is a block diagram showing an example of a handwritten figure information display system including a handwritten figure 1n@ transmission system adopting the method of the present invention, and FIG. 4 is a block diagram when the system of FIG. 3 is realized as a microcomputer/system. , FIG. 5 to FIG. 8 are flowcharts for explaining the present invention in detail. ■...Graphic input device 7...Transmission device 8...Processing device 14...Display device 19...・Data storage device
31... Selective Means Agent Patent Attorney Book 1) Takashi Figure 5 Figure 8 Figure 6 Figure 6 Continued from page 1■ Int, CI, 4 Identification code Office reference number H04N
1/41 7136-5C @ Inventor Masu Nakamura - Inside Asahiga'no Factory, Hino City 0 Inventor Tsuru 1) Isamu Three Inside Asahiga'no Factory, Hino City

Claims (3)

[Claims] (1) A graphic input device that extracts coordinate value information of a graphic including handwritten characters and symbols, a data storage device that accumulates data sent from the graphic input device, and a data storage device that stores data sent from the graphic input device; A handwritten figure information transmission system comprising a transmission device for transmitting data is provided with a selection means for selecting necessary data on a receiving side from data before being transmitted by the transmission device, and A data transmission method in a handwritten figure information system, characterized in that only data necessary for a receiving side is transmitted from the transmission device. (2) The selection means is provided between the graphic input device and the data storage device, and selects necessary data on the receiving side from the data sent from the graphic input device and outputs it to the data storage device. Characteristic Claim No. (1)
A data transmission method in the hand stamp and graphic information transmission system described in Section 1. (3) The selection means selects necessary data on the receiving side by removing cursor display data and erase area display data from the data before being transmitted by the transmission device. A data transmission method in a handwritten graphic information transmission system according to claim (1) or (2).