JPS63284656A - Character processor - Google Patents

Abstract

PURPOSE:To realize the display of an under-communication state with no addition of hardware by inverting the density of characters displayed at a character display part during communication. CONSTITUTION:A character processor contains a data communication means A and performs the communication of data to other character devices. When a communication interruption is applied, the means A gives a command to an inversion display means B to invert the density of characters displayed at a character display part and performs the data communication processing. When this data communication processing is through, the means A gives a command again to the means B to change the density of the displayed characters to the original level.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a character processing device having a communication function.

[Prior Art] Generally, a character processing device is composed of a keyboard section 5 display section, an output section, a storage section, and a control section, and is used to manually edit characters using a keyboard and then print them.

[Problems to be Solved by the Invention] When a conventionally known device of this type is provided with a communication function, in order to display that communication is in progress,
Adding new display areas or adding display hardware such as LEDs is being done.

For this reason, conventional character processing devices had the drawback of being forced to change the hardware, and also requiring the creation of new software to accommodate the changes.

Therefore, an object of the present invention is to provide a character processing device that enables display during communication by simply adding and changing software without adding new hardware, in view of the above-mentioned conventional example. .

Means for Solving Problem E] In the present invention, in a character processing device having a communication function,
The apparatus includes an inversion display means for inverting the density of characters displayed by the character display section, and energizes the inversion display means during data communication to visually indicate that communication is in progress.

[Function] In the character processing device according to the present invention, the density of the characters displayed on the character display is inverted in order to notify the operator that data is being communicated.

[Example 1 Hereinafter, the present invention will be described in detail based on Examples.

FIG. 1 is an overall configuration diagram of a character processing device according to the present invention. This device is a character processing device having a data communication means A, and includes an inversion display means B for inverting the density of characters displayed by a character display section, and by energizing the inversion display means B during data communication. , which visually indicates that communication is in progress.

FIG. 2 is an external perspective view of an electronic typewriter with a communication function to which the present invention is applied. In this figure, a platen knob 1 is used when manually loading paper or finely adjusting the printing position in the vertical direction. When the platen knob 1 is pushed inward, it is disconnected from the internal drive pulse generator and the knob 1 can be rotated manually.

The vapor support 2 is a paper guide plate, and is provided to ensure that the printed surface faces the operator even when thin paper is used.

The page end indicator 3 is a ruler that indicates the length to the end line of the paper, and the operator adjusts the indicator 3 vertically as shown by the arrow in advance according to the vertical length of the paper. ) When the top edge of the paper that comes out after passing through reaches the scale position of the indicator 3, the length of the paper to the end line can be known.

The release lever 4 is used to release a pinch roller (not shown) located at the bottom of the platen from the platen and manually correct the inclination of the sheet.

The soundproof cover 5 is provided to suppress the impact sound of impact printing, and is made of transparent acrylic, so that printed characters can be seen through the soundproof cover 5. When changing the printing font or replacing the ribbon cassette, open the upper cover 6 by rotating it backwards and remove the carriage part (not shown).
Replace the type wheel loaded in the printer or replace the ribbon cassette.

In the past, electronic typewriters had horizontal printing pitches of 10, 12, and 15 characters per inch, as well as proportional typewriters in which the printing pitch changed depending on the size of the typeface.
Spacing (hereinafter referred to as PS) may be performed. In this PS, six types can be selected: 10 characters per inch, 12 characters per inch, and 15 characters per inch.

Each of the three wooden scales 7 has three types of scales carved at every 10 character pitch.

The carriage indicator 8 is composed of three LEDs. The LED is mounted on the carriage, and the carriage position is indicated on the scale 7 by lighting the LED corresponding to the pitch specified from the keyboard 10.

The display unit 9 is used to display manual data and a cursor.
It consists of a fluorescent display tube that can display 0-digit characters.

The keyboard 10 includes a group of character keys 10a for manually printing characters, and selector switches arranged on both sides of the character keys 10a.
It consists of function keys 10b, Inc.

Cable 11 is connected to a communication network.

FIG. 3 is a block diagram showing the electrical configuration of the embodiment shown in FIG. 2. In this figure, 14 is a central processing unit (CPU), which controls and monitors the entire electronic typewriter.

15 is a random access memory (R to M), and CP
It acts as an execution area and a work area for control by U14.

16 is a read-only memory (ROM), and the CPU 1
4 is a storage area for a control program (shown in FIG. 7) to be executed.

9 is a display (DI) shown in FIG.
With the command, the display data (including the cursor) stored in the RAM 15 is transferred to the display driver unit (DDU).
20.

10 is a keyboard (KB) shown in FIG. 2, which transmits key manual data to the CPU 14 via a keyboard controller (BG) 19.

A printer unit (PR) 17 performs carriage position control, hammer control, paper feed control, digiwheel control, etc. via a printer controller (PRC) 18.

21 is a timer for time measurement (TMR), and CPt11
CP when the time set by command 4 has elapsed, etc.
Various interrupts are applied to U114.

22 is a communication control unit (SIO), which functions as an input/output interface with a communication line.

23 is a system bus of the CPU 14.

FIG. 4 is a diagram showing area allocation of the RAM 15 shown in FIG. 3. This RAM 15 includes a document memory (DOC-MEM) 30 used for document editing and type processing.
, a communication document buffer (COM-B) that stores communication documents.
UF)31. Communication management log memory (COM-LOG) 32 that stores information for communication management, communication flag (COMJ) 3 that indicates whether communication transmission processing is in progress.
3. Display the inverted display on the display driver unit (DD
U) Display reversal register (CRJI) for instructing 20
) consists of 34.

FIG. 5 is a diagram showing area allocation of the ROM 16 shown in FIG. 3, which consists of a program area (40) for document editing/type processing and a communication interrupt processing program area (41).

Next, the operation of this embodiment constructed as described above will be explained with reference to FIGS. 6 and 7.

Note that in the following description, the details of normal document editing/type processing operations will be omitted here since they are well known. Furthermore, since transmission procedures such as communication protocols in communication interrupt processing are well known, their explanation will be omitted, and only the internal processing according to the present invention at the time of communication interruption will be explained.

Furthermore, since the details of the circuit such as the display are well known, their explanation will be omitted. However, the display inversion control is performed by instructing the display inversion register CR-H to set/reset.

6(A) to (C) show the display device (D
I) It is a figure showing the display state of 9. In FIG. 5A, normal document editing and typing processing is being performed, and normal characters and a cursor are displayed. (B) of the same figure shows a state in which communication has started, and the display is inverted. Same figure (C)
indicates that communication has ended. Therefore, rLMNOP J is manually operated during communication, as shown in Figure (A).
Similarly, the normal display is made.

FIG. 7 is a flowchart showing a communication interrupt processing program to be executed by the CPU 114.

First, in step Sl, it is determined whether the communication flag COMJ is "on".As a result, the flag COMJ
If F is ``ON'', it means that the communication state is already in progress, so the process directly advances to step S4 and data transmission processing is performed.If the flag COMJ is ``OFF'' in step St, it means that communication is in the state of starting. Moving to S2, the flag COMJ is set to "on", and in the next step S3, the display reversal register CR-R is set to instruct the display to be inverted, and the display drive unit DDU20 is instructed to invert the display. Therefore, the display drive unit DD1120 registers C.
The density of the display (characters, cursor) is inverted corresponding to RH (see FIG. 6(B)).

In step S5, it is determined whether data transmission has ended. The determination varies depending on the data transmission protocol, but for example, if it is a BASI (: procedure), the end is determined by receiving the EOT code (end of transmission).If it is determined that the end is completed in step S5, the step The process returns to S6, and if not, the interrupt process ends.

In step S6, the register CR-R is reset to instruct the display to be re-inverted, and the display drive unit DDU
20 returns the reversed display to its original state (see FIG. 6(C)).

In the next step S7, the communication flag COMJ is set to “
"Off" and finish interrupt processing.

Next, some modifications and additional uses of the above embodiment will be described.

In the embodiments described so far, as shown in FIG. 6, an electronic typewriter equipped with a one-line display has been described, but the present invention can also be applied to devices equipped with a display of one or more lines. is clear.

In addition, although the above embodiment is configured to perform the inverted display only during communication, the received document is in the communication buffer COM-B.
If in UP, communication management log/memory COM-LO
The display may be inverted with reference to G. In that case, the display may be returned to normal after printing the received document.

Although the above-mentioned embodiments described so far have been configured without an external storage device, it is clear that the present invention can also be used in an apparatus equipped with an external storage device such as a floppy disk.

[Effects of the Invention] As explained above, in the present invention, by slightly modifying the communication interrupt processing program, etc., it is possible to make it visible that "communication is in progress" without the need to modify the document editing/type processing software. Can be displayed.

Further, according to the present invention, it is possible to visually display that "communication is in progress" without the need to add special hardware such as an LED.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of a character processing device according to the invention; Fig. 2 is an external perspective view of an electronic typewriter with communication function, which is an embodiment of the invention; Fig. 3 is a system configuration diagram of this embodiment; A block diagram for explaining the operation; FIG. 4 is a diagram showing an example of how the RAM shown in FIG. 3 is used; FIG. 5 is a diagram showing an example of how the ROM shown in FIG. 3 is used. 6(A) to (C) are diagrams showing the display mode of the display device in this embodiment, and FIG. 7 is a flowchart showing the communication interrupt processing procedure of the CPU in this embodiment. 9...Display device (Dll), 10...Keyboard (to B), 11...Communication cable, 14...CPU. 15...RAM. 16...ROM. 20...Display driver unit (DDU), 22...
・Communication control unit. Figure 1 RAM 15 Figure 4 ROM +6 Figure 5

Claims (1)

[Scope of Claim] A character processing device having a communication function, comprising an inversion display means for inverting the density of characters displayed by a character display section, and by energizing the inversion display means during data communication. A character processing device characterized by visually displaying that it is inside.