JPH0612047A - Lcd character magnifying display system - Google Patents

Abstract

PURPOSE:To add the magnifying display function to improve the difficulty in seeing of display characters which are reduced in accordance with miniaturization of a portable land mobile radiotelephone set. CONSTITUTION:This system consists of an LCD unit 1 consisting of a full dot matrix, an LCD driver 2 which drives the CLD unit 1, a CPU 3 which controls the display and consists of a microcomputer, a first ROM 5 which is connected to the CPU 3 and is used as a character generator of standard character forms, a second ROM 6 used as a character generator of magnified character forms, and a key input part 4 connected to the CPU 3, and the CPU 3 incorporates software which uses characters having magnified character forms to display six lowest digits of a number like a dial number with enlarged characters and displays the other higher digits in another column with standard character forms at the time of input of the number from a key input part 4.

Description

Detailed Description of the Invention

[0001]

The present invention relates to an LCD (Liquid).
(Crystal Display, liquid crystal display) Character enlargement display system, especially mounted in portable car phones,
The present invention relates to an LCD character enlarged display method for displaying on an LCD.

[0002]

2. Description of the Related Art Since a portable car telephone is driven by a battery, current consumption is taken into consideration in the circuit design, and an LCD device is widely used for a display section.

Also, as the system has become more sophisticated, the display function of the telephone has been improved, and the mainstream is the one that can display alphanumeric characters and symbols with a 5 × 7 dot matrix configuration from a numeric display with a 7 segment configuration. Is coming, and the number of characters is 30
There is an increasing tendency of ~ 40 characters.

[0004]

The miniaturization of portable mobile telephones has been remarkably progressing, and the size of the display unit is inevitably reduced in proportion to this miniaturization, and the above-mentioned high functionality and large number of characters are required. The size of the font to be displayed becomes smaller in combination with the realization, and there is a problem that the display becomes difficult to see.

An object of the present invention is to eliminate the above-mentioned drawbacks and to make an enlarged display of display characters possible and an LCD which is easy to see.
It is to provide a character enlarged display method.

[0006]

An LCD character enlarged display system of the present invention is an LCD unit composed of all dot matrix, an LCD driver for driving the LCD unit, and a display screen to be displayed on the LCD unit. A CPU having a microcomputer structure for controlling the CPU, a key input section connected to the CPU to set an input of a display screen, and character data of a standard font to be displayed on the LCD unit connected to the CPU. 1 ROM and a second ROM which is connected to the CPU and stores character generation pattern data of an enlarged character to be displayed on the LCD unit, and the LCD unit is dialed by pressing a key on the key input section. When displaying a number string such as An enlarged display is made based on the data stored in the second ROM, and the numeral string of the higher digit of the numeral string excluding the numeral string in the lowermost row is a standard character of another row based on the data stored in the first ROM. It has a configuration in which a program to be displayed is built in the CPU.

Further, the LCD character enlarged display system of the present invention is
The display screen displayed on the LCD unit includes a standard screen composed of a predetermined plurality of columns, and a magnified display screen including a magnified display in which at least two of the predetermined plural columns are used in correspondence with a magnifying power in magnifying display. Both of them have a configuration capable of being formed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

The embodiment shown in FIG. 1 is an LCD unit 1 having an all-dot matrix structure and an LC for driving the LCD 1.
A D driver 2, a CPU 3 having a microprocessor configuration and a program for generating a display screen for the LCD unit 1, a key input section 4 for setting input of a display screen and an enlarged display screen, and a standard sentence displayed on the LCD unit 1. First ROM for storing character data of a font
5 and a second ROM 6 for storing the character generation pattern data of the enlarged character type.

Next, the operation of this embodiment will be described.

LCD composed of all dot matrix
In the unit 1, characters and numbers are displayed by the LCD driver 2.

The LCD driver 2 is interfaced with the CPU 3 having a microcomputer configuration, and the CPU 3 detects a key press by the key input of the key input unit 4 and drives the LCD driver 2 to display on the LCD unit 1.

In the example of the standard screen using the first ROM for storing the character data of the standard character, a character size pattern capable of displaying 8 digits / column is built in as shown in FIG.

The second ROM 6 stores the character generation pattern data of the enlarged character and has the character patterns of X2 and X3 built therein. In this embodiment, when the numeric keys of the key input unit 4 are input and a numeric string such as a dial number is displayed on the LCD unit 1, 6 digits of the bottommost column to be displayed are enlarged by X2 as shown in FIG. Displayed in characters, key input section 4
Every time the numeric keys are continuously input from, the last 6 digits entered are enlarged and displayed while shifting to the left.

The enlarged display is performed using the character generation pattern of the enlarged character stored in the second ROM 6.

The key input from the key input unit 4 is continuously 6
When more than 6 digits are input, the upper digits exceeding 6 digits are moved to the upper row, and display is performed using the character data of the standard character style read from the first ROM 5.

The display software of this embodiment is the CPU 3
It is built in and controls the display of a number string such as dial numbers.

FIG. 2 is a flowchart of the display process of the embodiment shown in FIG.

Whether or not there is a key input is determined in step 101. If NO, the process returns to the standby state, and if YES, the process proceeds to step 102.

In step 102, it is determined whether or not a dial number has been input. If YES, the flow advances to step 103 to display the lower 6 digits in enlarged characters. If NO, step 104
Perform the processing corresponding to the input code shown in
Return to.

After the processing of step 103, the routine proceeds to step 105, where the upper digits other than the enlarged lower 6 digits are displayed in standard characters, and the routine returns to step 101.

In this way, the enlarged display of the dial number is possible.

[0023]

As described above, according to the present invention, when an LCD unit having an all-dot matrix structure is used to display a numeric string of dial numbers, an enlarged display function is added to the portable mobile telephone. There is an effect that it is possible to provide a display that is easy to see.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a flowchart of display processing in the embodiment of FIG.

FIG. 3 is a diagram showing a display example of the embodiment of FIG.

FIG. 4 is a diagram showing a conventional display example.

[Explanation of symbols]

 1 LCD unit 2 LCD driver 3 CPU 4 Key input part 5 1st ROM 6 2nd ROM 7 Upper row display of numeral string 8 Enlarged display of lowermost row of numeral string

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H04B 7/26 T 7304-5K

Claims (2)

[Claims] 1. An LCD composed of an all-dot matrix
A unit, an LCD driver for driving the LCD unit, a CPU having a microcomputer configuration for controlling generation of a display screen to be displayed on the LCD unit,
A key input unit which is connected to the CPU to set an input of a display screen, and a first character which is connected to the CPU and stores character data of a standard character to be displayed on the LCD unit.
And a second ROM which is connected to the CPU and stores character generation pattern data of an enlarged character to be displayed on the LCD unit, and the LCD unit is dialed by pressing a key on the key input unit. The number string of the lower digits of the predetermined number of digits to be displayed when displaying the number string is enlargedly displayed based on the data stored in the second ROM, and the number except for the bottommost number string is displayed. An enlarged character display of LCD characters of a portable car telephone, characterized in that the CPU stores a program for displaying a numerical character in the upper digit of the column as a standard character in another column based on the data stored in the first ROM. method. 2. A display screen displayed on the LCD unit is a standard screen composed of a plurality of predetermined columns, and an enlarged display using at least two columns of the predetermined plurality of columns corresponding to an enlargement ratio during enlarged display. 2. The LC according to claim 1, wherein any of the enlarged display screens including
D-character enlarged display method.