JPS6315564A - Telewriting equipment - Google Patents

Abstract

PURPOSE:To input picture information even during the reception of a picture data from an opposite telewriting equipment by providing a picture data storage means storing the output of a picture data output means converting a hand- written picture information into an electric signal. CONSTITUTION:When a carrier detect (CD) signal outputted from a modulator- demodulator section 6 is turned on, a data processing section 4 stores a hand- written picture data outputted from a hand-written picture data output section 3 in a picture memory in the data processing section 4, displays the result on a display section 5 at a low brightness, outputs the hand-written picture data to a data storage section 9, where the data is once stored. When the CD signal outputted from the section 6 is changed from ON to OFF, the stored hand-written picture data is outputted to the opposite side telewriting equipment 1 via a line connection control section 7 and a telephone line 2. Even if the picture data from the opposite telewriting equipment is being received in such way, the picture data is inputted.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a telewriting device.

[Prior Art] FIG. 4 is a block diagram of a conventional telewriting device. In FIG. 4, IO is a conventional telewriting device, and this telewriting device IO is connected to a distant telewriting device IO via a telephone line 2, and a pen in the telewriting device IO on the sending side is connected to a remote telewriting device IO via a telephone line 2. The movement of the telewriting device I on the receiving side remains the same.
Along with the handwritten image data reproduced as similar movements of the pen at 0, the voice is transmitted simultaneously or alternately over the same telephone line 2.

Reference numeral 3 denotes a handwritten image data output section, which outputs the handwritten image data to the data processing section 4 by tracing a predetermined drawing board 3a with a pen. The data processing unit 4 is inputted.

The handwritten image data is output to the display section 5 for display, and is also output to the modulation/demodulation section 6. The modulation/demodulation section 6 modulates the manually input handwritten image data using a predetermined modulation method, and outputs it to the line connection charge a section 7. The line connection control unit 7 outputs the modulated image data to the telewriting device IO of the other party via the telephone line 2, and connects the telephone 8 to the telephone line 2 if necessary. When image data is sent from the telewriting device 10 of the other party, it is output to the display unit 5 via the line connection control unit 7, modulation/demodulation unit 6, and data processing unit 4, and the transmitted handwritten image data is is displayed.

This telewriting device IO has three types of operation modes: audio mode, simultaneous mode, and drawing mode, and the user can select and use any mode. First, in the voice mode, the telephone 8 is directly connected to the telephone line 2 via the line connection control section 7, while the equipment after the modulation/demodulation section 6 is separated from the telephone line 2. The device IO operates as a normal telephone. Next, in the simultaneous mode, the telephone line 2 is connected to the telephone 8 and the modulation/demodulation section 6 via the line connection control section 7, and characters are output from the handwritten image data output section 3 at the same time as a normal telephone conversation using the telephone 8. Image data such as graphics and graphics are displayed on the display section 5, and are also transmitted to the telewriting device H10 on the other party's side via the modulation/demodulation section 6, line connection control section 7, and telephone line 2. Further, image data such as characters and figures from the telewriting device 10 of the other party is transmitted to the telephone line 2, the line connection control section 7, the modulation/demodulation section 6, and the data processing section 4.
is displayed on the display unit 5 via. Furthermore, in the drawing mode, the telephone line 2 is connected to the modem unit 6 via the line connection control unit 7, and is disconnected from the telephone set 8, and normal telephone functions are stopped and the handwritten image data is Image data such as characters and figures outputted from the output section 3 is sent to the data processing section 4, the modulation/demodulation section 6, the line connection control section 7, and the telephone line 2.
The image data is alternately transmitted to the telewriting device IO of the other party via the telewriting device IO of the other party, and the image data is output from the handwritten image data output unit 3 of the telewriting device IO of the own terminal. are both displayed on the display section 5.

FIG. 5 is a block diagram showing the communication state between the telewriting devices 10 in the simultaneous mode and the drawing mode.
and 10b are connected via the telephone line 2, and the image data output from the handwritten image data output section 3 of the telewriting device Al0a is displayed on the display section 5 via the data processing section 4, and the image data is displayed on the display section 5 as described above. Then, the image data is transmitted to the telewriting device BIOb via the telephone line 2 and displayed on the display unit 5 of the telewriting device B10b. Therefore, this conventional telewriting device 10
The communication form between a and 10b is half-duplex communication.

[Problems to be Solved by the Invention] Therefore, while the telewriting device B10b is receiving image data from the telewriting device A10a,
The data processing unit 4 of the telewriting device BIOb prohibits manual input of image data from the handwritten image data output unit 3, and the user of the telewriting device BIOb
It was necessary to wait for inputting image data until reception of image data from the telewriting device Al0a on the other end was completed.

[Object of the Invention] An object of the present invention is to solve the above-mentioned problems, and to enable image data to be input to the own device even while image data is being received from the other party's telewriting device. To provide a telewriting device capable of distinguishing image data sent to a telewriting device on the other side via a transmission line and image data not yet sent out on the screen of a display means provided in the telewriting device.

[Structure of the Invention] The present invention provides image data output means for converting handwritten image information into image data of electric/electrical signals, image data storage means for accumulating the output of the image data output means, and image data output means for accumulating the output of the image data output means. a modulating means for modulating the output of the means and the output of the image data storage means and outputting the modulated image data to a transmission line; a demodulating means for demodulating the modulated image data input via the transmission line; and an output of the image data output means. and display means for distinguishing and displaying the output of the demodulation means as image data outputted to the transmission line by the modulation means and image data not outputted.

[Embodiment] FIG. 1 is a diagram of a telewriting device that is an embodiment of the present invention. Components in FIG. 1 that are the same as those in FIG. 4 are designated by the same reference numerals.

The telewriting device 1 of the present invention is different from the conventional telewriting device 10 shown in FIG. The data storage unit 9 is connected to the data processing unit 4 and the display unit 5 in order to display the image data displayed on the display unit 5 at two predetermined brightness levels: high brightness and low brightness. It is provided with a modulation section II.

In FIG. 1, when the modulation/demodulation unit 6 starts receiving image data via the telephone line 2 and the line connection control unit 7, the modulation/demodulation unit 6 outputs a carrier detect signal (hereinafter referred to as , CD signal) is turned on.
On the other hand, if the modulation/demodulation section 6 does not receive image data input via the telephone line 2 and the line connection control section 7 for a predetermined period of time, the CD signal is turned off.

When the CD signal output from the modulation/demodulation section 6 is off, the data processing section 4 converts the handwritten image data inputted using the drawing board 3a and outputted from the handwritten image data output section 3 into the data processing section 4. The handwritten image data stored in the image memory is output to the brightness modulation section 11 and the display section 5 to be displayed with high brightness, and is also output to the modulation/demodulation section 6 to control the line connection control section 7 and the telephone line 2. It is output to the other party's telewriting device l via the host.

On the other hand, when the CD signal output from the modulation/demodulation section 6 is on, the data processing section 4 stores the handwritten image data output from the handwritten image data output section 3 in the image memory within the data processing section 4, The stored handwritten image data is transmitted to the brightness modulation unit 11.
The handwritten image data is outputted to the display section 5 and displayed at low brightness, and the handwritten image data outputted from the handwritten image data output section 3 is outputted to the data storage section 6 and temporarily stored. Thereafter, when the CD signal output from the modulation/demodulation section 6 turns from on to off, the handwritten image data once stored in the data storage section 6 is output to the modulation/demodulation section 6, and the line connection control section 7 and the telephone line 2 to the other party's telewriting device l.

In addition, the data processing section 4 stores image data manually inputted from the telewriting device 1 of the other party via the telephone line 2, the line connection control section 7, and the modem $6 into the image memory within the data processing section 4. The brightness modulation unit I
I and the display unit 5 for display at high brightness. Note that the image memory in the data processing section 4 is provided to store a predetermined capacity of handwritten image data to be displayed on the display section 5, and the image memory is provided to store handwritten image data of a predetermined capacity to be displayed on the display section 5. Telephone line 2 from the telewriting device 1 of the other party
, the line connection control section 7, and the modulation/demodulation section 6 to store image data input to the data processing section 4.

The image data stored in the image memory in the data processing section 4 is retained until the power of the telewriting device 1 is turned off or a deletion instruction is given. The processing flow of this data processing section 4 will be described in detail later with reference to the flow chart of FIG.

The data storage unit 9 is composed of a memory having a predetermined capacity that can store image data, and stores the image data input from the data processing unit 4 and stores the image data in response to control from the data processing unit 4. The image data is output to the data processing section 4.

The brightness modulation unit 11 modulates the image data output from the data processing unit 4 with two types of predetermined brightness, high brightness and low brightness, using a known brightness modulation method in response to a brightness control signal from the data processing unit 4. Then, the brightness-modulated image data is output to the display section 5. .

FIG. 3 is a flow chart showing the operation of the data processing section 4 of the telewriting device 1 shown in FIG. It is determined whether or not image data is input from the output unit 3. If image data is input, the process proceeds to step 2 (S2), and the data processing unit 4 changes the brightness control signal indicating low brightness modulation to the brightness. At the same time, the image data input from the handwritten image data output section 3 to the data processing section 4 is output to the brightness modulation section 11 . At this time, in response to receiving the brightness control signal indicating low brightness modulation, the brightness modulation unit 11 modulates the manually input image data from the data processing unit 4 at a predetermined low brightness and displays it on the display unit 5. The image data is output and displayed on the display unit 5 at low brightness.

Next, in step 3 (S3), the data processing unit 4 determines whether image data is being transmitted from the other party's telewriting device l to the own device 1 via the telephone line 2.
The determination is made based on the CD signal output from the modulation/demodulation section 6.

In step 3 (S3), if the CD signal is off, in step 4 (S4), the image data is not transmitted from the telewriting device l of the other party, so the handwritten image data output unit 3 processes the data. After transmitting the image data input to the unit 4 to the telewriting device of the other party via the modulation/demodulation unit 6, the line connection control unit 7, and the telephone line 2, the process proceeds to step 9 (S9).

In step 9 (S9), the data processing unit 4 outputs a brightness control signal indicating high brightness modulation to the brightness modulation unit 11 to indicate that the image data has been sent to the telewriting device l of the other party, and then 2 (S2), the image data displayed at low brightness on the display unit 5 is displayed at a predetermined high brightness, and then the process returns to step I (S1).

If, in step 3 (S3), the CD signal manually input from the modulation/demodulation section 6 to the data processing section 4 is on, the data processing section 4 transmits the signal from the telewriting device 1 of the other party to the own device via the telephone line 2. 1, the image data inputted from the handwritten image data output unit 3 to the data processing unit 4 is not transmitted and is temporarily stored in the data storage unit 9 in step 5 (S5). After that, return to step 1 (Sl).

On the other hand, in step 1 (Sl), if there is no human power to transfer the image data from the handwritten image data output unit 3 to the data processing unit 4, the process proceeds to step 6 (S6), and the data storage unit 9
The presence or absence of accumulated image data at is determined. In step 6 (S6), if the image data is stored in the data storage section 9, the process advances to step 7 (S7),
Whether or not image data is being transmitted from the telewriting device 1 on the other end is determined based on the CD signal output from the modulation/demodulation section 6 to the data processing section 4 . If step 7 (
If the CD signal is off in step S7), the telewriting device 1 of the other party sends a message to the own device 1 via the telephone line 2.
Since no image data has been transmitted to
In step 8), after the image data stored in the data storage unit 9 is transmitted to the telewriting device 1 of the other party, in step 10 (S10), the data processing unit 4
In order to indicate that the image data has been sent to the telewriting device t on the other end, a brightness control signal indicating high brightness modulation is output to the brightness modulation unit 11, and first, in step 2 (S2), a low brightness modulation signal is displayed on the display unit 5. After displaying the image data displayed at a predetermined high brightness, the process returns to step I (Sl). If the image data is not stored in the data storage unit 9 in step 6 (S6), step 1 is performed again.
Return to (Sl). Similarly, in step 7 (S?), when the CD signal is on, image data is being transmitted from the other party's telewriting device 1 to the own device 1 via the telephone line 2, so step 1 ( Return to Sl).

FIGS. 2(A) and 2(B) are block diagrams showing the communication state between the telewriting devices 1 according to the present invention, and FIG.
In Figures (A) and (B), two telewriting devices 1a and tb are connected via a telephone line 2. Hereinafter, the operation of the telewriting device shown in FIG. 1 will be explained with reference to FIG. 1 and FIGS.

First, in FIG. 2(A), telewriting device B
When image data is not being transmitted from ib to the telewriting device Ala, the CD signal output from the modulation/demodulation section 6 of the telewriting device Ala to the data processing section 1 is off. At this time, telewriting device A
When the operator of ``Ala'' writes image data using the drawing board 3a, the image data output from the handwritten image data output section 3 of the telewriting device Ala is sent to the display section via the data processing section 4 and the brightness modulation section 11. 5 with high brightness, and the image data is sent to the telewriting device Bi via the modulation/demodulation section 6, the line connection control section 7, and the telephone line 2.
b, and is transmitted to the display section 5 of the telewriting device Bib.
displayed in high brightness.

Telewriting device Blb is telewriting device A
The telewriting device Bib is receiving the image data from the telewriting device Blb, and the CD signal output from the modulation/demodulation unit 6 to the data processing unit 4 is on. The image data output from the image data output section 3 is displayed at low brightness on the display section 5 via the data processing section 4 and the brightness modulation section ll, and the image data is input to the data storage section 9 and stored therein. . Therefore, the image data transmitted from the telewriting device Ala is displayed with high brightness on the display unit 5 of the telewriting device Bib, and the image data output from the handwritten image data output unit 3 of the telewriting device Bib is displayed with high brightness. is displayed on the display section 5 with low brightness.

Next, when the reception of the image data from the telewriting device Ala is completed and a predetermined period of time has elapsed, the CD signal output from the modulation/demodulation section 6 of the telewriting device Bib to the data processing section 4 is turned off, as shown in FIG. 2(B). As shown in FIG.
The image data stored in the data storage section 9 of the ib,
The data is transmitted to the telewriting device Ala via the data processing section 4, modem section 6, line connection control section 7, and telephone line 2 of the telewriting device Bib. On the other hand, the telewriting device Ala transfers the image data transmitted from the telewriting device Bib to the telewriting device Ala.
is displayed on the display section 5.

6(A) to 6(D) are front views showing the screen 20 of the display unit 5 of the telewriting device Bib in the process shown in FIG.
An embodiment of the telewriting device of the present invention will be described with reference to FIG.

First, in the telewriting device Ala, the operator uses the drawing board 3a to write “What is your address?” (and the image data is transferred from the telewriting device Ala to the telephone line 2.
is transmitted to the telewriting device Bib via the telewriting device Bib, and a message “What is your address?” is displayed at the top of the screen 20 of the display unit 5 of the telewriting device B1b as shown at 21 in FIG. 6(A).
" is displayed in high brightness.

Next, in order to answer the question using the drawing board 3a in the telewriting device Blb, the operator writes “Chiba-doko,” and the image data is transferred to the telewriting device B.
ib's display unit 5, and the telewriting device Bl
On the screen 20 of the display section 5 in b, below the previously displayed "What is your address?", "Chiba-doko" is displayed in low brightness as shown at 22 in FIG. 6(B). .

Furthermore, when the operator writes "What is your name?" using the drawing board 3a on the telewriting device Ala, the image data is transmitted from the telewriting device Ala to the telewriting device Bib via the telephone line 2. On the screen 20 of the display unit 5 of the lighting device Blb, below the previously displayed "Chiba-doko", "What is your name?" is displayed in high brightness as shown at 23 in FIG. 6(C). be done.

After this, when no image data is transmitted from the telewriting device Ala to the telewriting device Blb for a certain period of time, the CD signal output from the variable R unit 6 of the telewriting device Bib to the data processing unit 4 as described above is In response, the telelighting device Blb
is the image data input first by the operator of the telewriting device Bib and stored in the data storage section 9 through the telephone line 2.
, to the telewriting device Ala. This allows the telelighting device fiBl
On the screen 20 of the display unit 5 of b, the telewriting device B
Among the image data manually generated by the operator of B 1b using the drawing board 3a, the image data transmitted from the telewriting device B 1b to the telewriting device ffiAIa is displayed with high brightness.

That is, as shown in FIG. 6(D), the image data "Chibagu" manually created by the operator of the telewriting device Bib
22, which has already been transmitted to the telewriting device Ala.
"Chiba" 22a is displayed with high brightness, while "Prefecture" 22b, which is not transmitted to the telewriting device Bib, is displayed with low brightness.

On the other hand, the operator of the telewriting device Blb responds to the image data “What is your name?” 23 transmitted from the telewriting device Ala to the drawing board 3a.
When you write "Yamada" using ?" 23, "Yamada" is displayed with high brightness as shown at 24 in FIG. 6(D).

Therefore, in the conventional telewriting device IO,
Although it was not possible to input image data using the drawing board 3a while receiving image data from the telewriting device 1O of the other party, it is possible to use the telewriting device 10 equipped with the data storage section 9 of the present invention. Accordingly, image data can be input using the drawing board 3a of the own device 1 even while receiving image data from the telewriting device 1 of the other party. Furthermore, image data that has been sent to the telewriting device 1 of the other party and image data that has not yet been sent can be identified on the screen of the display unit 5.

In the above embodiment, in order to distinguish between image data that has been sent to the telewriting device l of the other party and image data that has not yet been sent, predetermined high-intensity and low-intensity images are displayed on the screen of the display unit 5, respectively. If the display unit 5 is a color display instead of a monochrome display, the brightness modulation unit 11 in FIG. The image data to be sent out is displayed on the display unit 5 in red and green, respectively.
The image data may be displayed so that the user can distinguish between image data that has been sent to the other party's telewriting device l and image data that has not yet been sent, based on the color.

As explained above, in the telewriting device 1, even if image data is arriving from the telewriting device 1 of the other party, the own device 1 can receive the image data without being aware of it.
image data can be input using the drawing board 3a of the other party, and after the reception of the image data from the other party's telewriting device 1 is completed, the image data input to the own device 1 is automatically transferred to the other party's telewriting device 1. Send to writing device 1.

Furthermore, since image data that has been sent to the telewriting device l of the other party and image data that has not yet been sent can be identified on the screen of the display unit 5, communication with the other party can be carried out smoothly, and There is an advantage that the operability of the telewriting device l can be improved.

[Effects of the Invention] As detailed above, according to the present invention, the telewriting device is equipped with an image data storage means for storing the output of the image data output means for converting handwritten image information into an electrical signal. Even if image data is being received from the other party's telewriting device, the user can input image information using the above-mentioned image data output means of the own device without having to wait. Image data, which is an electrical signal of image information, can be stored in the image data storage means.

Furthermore, since the display means is provided to distinguish and display the output of the image data output means as image data that has been output to the transmission line and image data that has not been output, images that have been sent to the transmission line can be displayed on the screen of the display means. It is possible to distinguish between data and unsent image data. Therefore, there are advantages in that communication with the telewriting device of the other party can be performed smoothly and the operability of the telewriting device can be improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a telewriting device that is an embodiment of the present invention, FIG. 2 is a block diagram showing the communication state between the telewriting devices shown in FIG. 1, and FIG. 3 is a block diagram of the telewriting device shown in FIG. 1. FIG. 4 is a block diagram of the conventional telewriting device; FIG. 5 is a block diagram showing the communication status between the telewriting devices in FIG. 4; FIG. A) to D) are front views showing the screen of the display unit during processing of the telewriting device shown in FIG. 2; ■... Telewriting device, 2... Telephone line, 3... Handwritten image data output section, 3a... Drawing board, 4... Data processing section, 5... Display section, 6
... Modulation/demodulation section, 7... Line connection control section, 8... Telephone, 9... Data storage section, 11... Brightness modulation section.

Claims (1)

[Claims] (1) Image data output means for converting handwritten image information into image data of electrical signals; Image data accumulation means for accumulating the output of the image data output means; Output of the image data output means and accumulation of the image data a modulating means for modulating the output of the means and outputting the modulated image data to a transmission line; a demodulating means for demodulating the image data input and modulated via the transmission line; A telewriting device comprising display means that distinguishes and displays image data output to a transmission line by a modulation means and image data that is not output.