JPS6282420A - Character processor - Google Patents

Abstract

PURPOSE:To improve the input speed by discriminating whether an alphabetic key input is the input just after a specific code key input or not when alphabetic lower case letter shift is inputted and converting the input code to an alphabetic upper case better code. CONSTITUTION:A character processor consists of a CPU 1, a keyboard 3, a controller 4 of the keyboard 3, a liquid crystal display device 5, a controller 6 of this device 5, a refresh memory 7, a character generator 8, a ROM 9, a RAM 10, a printer 12, and a controller 11 of this printer 12. A control means which converts the first character following a specific key to an alphabetic upper case letter is stored in the ROM 9. The first alphabetic key following a specific key like '!', '?', or '.' is automatically converted to an upper case letter alphabet even in the lower case letter shift state when English sentences are inputted, thus reducing the key operation burden of an operator.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a character processing device, and more particularly to a character processing device equipped with a yellow shift and a small English shift.

[Conventional technology]

Conventionally, devices of this kind, such as English typewriters, English word processors, and Japanese/English word processors, have functions of English small shift and yellow fire shift as necessary.

[Problem that the invention seeks to solve]

However, in this type of device, when creating an English sentence, it is necessary to switch between English small shift and yellow fire shift each time in order to capitalize the first letter of the sentence.

[Means for solving problems]

The present invention solves the above-mentioned problems, allows normal English sentences to be created without switching between English and small shifts, and allows English sentences to be inputted quickly without bothering the operator. An object of the present invention is to provide a character processing device that is equipped with a lowercase alphabetic character shift and an uppercase alphabetic character shift. and an f-stage that converts only the alphabets determined to be input immediately after the input of a specific code key by the f-stage into an English capital letter code.

〔Example〕

The present invention will now be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the configuration of the character processing device of the present invention,
Here, 1 is a microprocessor (
C; PU) Yes. 2 is a pass line, which serves as an address bus for specifying the address of each input/output memory, which will be described later, a bidirectional data bus used for transferring various data, and an interconnected bus for directing and writing each memory, which will be described later. It is composed of control lines and the like used to transmit reception and data set timing.

Furthermore, 3 is a keyboard (KB), which is equipped with various keys such as alphabet keys (alphanumeric characters), kana keys, and command keys for insertion, deletion, page break, and line feed, as shown in Figure 2. be. 4 is the keyboard controller (KB
C), which encodes the data input from the keyboard 3 and sends an interwoven signal to the path line 2.

Next, 5 is a liquid crystal display (LGD) that can display alphanumeric characters, kana, kanji, etc. 6 is a liquid crystal display controller (LCDC).

A refresh memory (RM) 7 stores character patterns to be displayed on the display 5 and outputs the character patterns as appropriate in response to display drive signals from the display controller 6. Further, 8 is a character generator (CG) in which patterns of alphanumeric characters, kanji, katakana, kanji, and special characters are stored in advance.

Furthermore, 9 is a read-only memory (ROM) for storing the control f order (see FIG. 3) regarding the present invention, which will be described in detail below. Reference numeral 10 denotes a readable/writable random access memory (RAM), which is used for temporary storage of various data or for storing information necessary for character processing. Therefore, the RA old 0 has, for example, a literary memory SN as described below. That is, SN is a document memory and stores character information. I
NDR is a key input data register and temporarily stores key input data. ADH is a document memory start register and stores the start position of the document memory. Also,
11 is a printer control, and 12 is a printer.

1; Using the character processing device of the present invention as shown in FIG. Detailed explanation thereof will be omitted, and the description of the present invention will be omitted.
An example of a control operation for converting the first character following ``,'', ``1'', and ``?'' into an uppercase letter will be described with reference to the flowchart of FIG.

FIG. 3 is a flowchart showing an example of a processing process of a program stored in a program memory (ROM) indicated by L. This flowchart is a process that works effectively under the English-small shift when creating English sentences, and will be explained only in this case.When a key input is made in the state of the 9-Ima-English small shift, the key code is coded in step S1. In other words, the code created from the key matrix is stored in the register INDH (note that this key code is different from, for example, an ASC11 code, and can also be called a raw code that is converted to various ASCII codes depending on the state of the shift key). However, it is possible to easily determine whether the key is an alphabetic key (/) before converting it to an ASCII code). Next, proceed to step S2, where the key code, that is, the contents of the register 1NOR, indicates that the pressed key is a full alphabet key (i.e., the current mode is the English and small mode, so the pressed key is a, b, c...2
If it is a key other than a, b, c...2, for example a space code or a "?" code, the process goes to step S3. Processing that is not directly related is performed, and the process proceeds to step S8.

If it is determined in step s2 that it is an English lowercase letter key, the process proceeds to step S4, where the current alphabet key is stored in the register INDR rlJ r,
J o, ni, bir? J (7) ASCII: I-Tony continuation<Determine whether it is the first alphabetic key.

If the key code does not correspond to the first a-Z, the process proceeds to step S5, where it is directly converted into an ASCII code of English and small alphabets, stored in the document memory indicated by register ADR, and the contents of register A and R are converted. The value is incremented and the key input wait is performed in step S7.

In step S4, if it is the first Alphabella) key, the process goes to step S8, where the code in the register INOR is converted into an ASCII code for yellow fire, and then stored in the document memory indicated by the register ADH. Then, go to step S8 and register ADI? is incremented by +1 and waits for a key input, and proceeds to the next input process.

〔Effect of the invention〕

As explained above, according to Unreleased 11, when inputting English text,
Even in English/small shift, specific keys such as "!", "?", ",
Since the first alphabet key after "" is automatically converted to the Yellow Fire alphabet, the operator does not have to switch between English and small shifts and art and high school shifts each time, reducing the burden of key operations on the operator. It is possible to reduce the input speed and at the same time measure the input speed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a plan view showing the arrangement of a keyboard. FIG. 3 is a flowchart showing a processing example of the present invention. l: central processing unit (cpu), 2: pass line, 3: keyboard (KB), 4: keyboard controller (MBC), 5
... Liquid crystal display (LCD), 6 ... Liquid crystal display controller (LCDC). 7... Refresh memory ()1N). 8... Character generator (CG), 9 ・
... Read-only memory (ROM), IO... Random access memory (RAM), 11... Printer controller. 12... Printer.

Claims (1)

[Scope of Claims] A character processing device equipped with a lowercase English character shift and an uppercase English character shift, comprising: determining means for determining whether an alphabetic key input is an input immediately after inputting a specific code key when inputting an English lowercase character shift, and the determining means A character processing device characterized by comprising means for converting only alphabets determined to be input immediately after inputting a specific code key into English capital letter codes.