JP3033639B2 - LCD character enlarged display method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a liquid crystal display (LCD).
(Crystal Display, liquid crystal display) Character enlargement display system, especially mounted on a portable car telephone,
The present invention relates to an LCD character enlarged display system for performing display by an LCD.

[0002]

2. Description of the Related Art A portable mobile phone is driven by a battery, so that power consumption is also taken into consideration in circuit design, and an LCD device is often used for a display unit.

[0003] Further, with the sophistication of the system, the display function of the telephone has also been improved, and a system that can display alphanumeric characters and symbols in a 5 x 7 dot matrix configuration from a 7-segment numeric display has become mainstream. And the number of characters is 30-4
0 characters tend to increase.

[0004]

The miniaturization of portable mobile telephones has been remarkably progressing, and the size of the display unit must be reduced in proportion to the miniaturization. The size of the characters to be displayed is reduced due to the increase in the size of the display, and the display becomes difficult to see.

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned drawbacks and to enable an enlarged display of display characters to provide an easy-to-read display.
It is to provide a character enlarged display method.

[0006]

According to the present invention, there is provided an LCD character enlarged display system comprising: an LCD unit constituted by an all dot matrix; an LCD driver for driving the LCD unit; and a display screen to be displayed on the LCD unit. And a key input unit connected to the CPU to set an input on a display screen, and a first input unit connected to the CPU for storing character data of a standard font to be displayed on the LCD unit. RO
Has a M, a second ROM for storing character generating pattern data of the enlarged character body is connected to the CPU displays on the display screen of the LCD unit, a screen switching key
Once for one key of the key input section , assigned
By pressing the eyes, the standard characters are displayed on the LCD unit.
Using the standard character style using body character data
The display screen is displayed.
Press to divide the display screen in the standard font into two
Enlarged for performing further legible edited larger image, the enlarged character body first and second is the display screen by the prior <br/> Symbol enlarged character body using character generation pattern data
The first enlarged mode display screen of the mode display screen
And the third press of the screen switching key
Switch to the second enlargement mode display screen,
By pressing the face switching key for the fourth time, the standard font
Return to the display screen by the standard font
Having a screen switching key sequence the LCD unit and the display screen the display the CPU a program for executing the Ru control by circulating the screen switching of each to be pressed has built configured that the display again.

[0007] The LCR character enlarged display system of the present invention comprises:
Under the control of the CPU, the enlarged display performed by reading out the character generation pattern data of the enlarged font contained in the second ROM is at least two times the standard screen of a plurality of columns based on the character data of the standard font. It has a configuration in which display is performed using columns.

[0008]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. The embodiment shown in FIG. 1 includes an LCD unit 1 having an all-dot matrix configuration, an LCD driver 2 for driving the LCD unit 1, and an LCD unit having a microprocessor configuration.
A CPU 3 for storing a program for generating a display screen for the unit 1, a key input unit 4 for performing input setting of a display screen and an enlarged display screen, and a first for storing character data of a standard font displayed on the LCD unit 1 , And a second ROM 6 for storing character generation pattern data of the enlarged character body.

Next, the operation of this embodiment will be described.

An all-dot matrix type LCD unit 1 is driven by an LCD driver 2 to display characters and numbers.

The LCD driver 2 is interfaced with a CPU 3 having a microcomputer structure, detects that an arbitrary key of the key input section 4 is pressed, and makes a call dial according to a preset combination of key inputs. It sets the number, calls up the repertoire memory, and sets the volume of the ringer sound for incoming calls.

A first ROM 5 storing character data of a standard font used when displaying a standard screen on the LCD unit 1 is a standard mode having a size capable of displaying 10 digits / column as the font to be displayed. Built-in pattern.

The second ROM 6 for storing a character generation pattern of an enlarged character body has a character pattern of × 2, × 3. In this embodiment, a key for screen switching is assigned in the key input unit 4, and the mode is the standard mode. 1
In addition to the display of 0 digits × 4 columns, the standard mode is divided into two each time the screen switching key is pressed, so that an enlarged display that is more easily edited can be displayed.

FIGS. 2A and 2B show display examples when the standard mode display of FIG. 4 is enlarged and displayed by pressing the screen switching key.

FIG. 2A shows an example in which a portion related to the time display in the enlarged display is edited and displayed. FIG. 2 (a)
In the figure, 7 is a display of "AM" and "PM" indicating AM / PM, and 8 is a day of the week. 9 is the hour and 10 is the minute display, but the display is enlarged by 3 to make it easy to see.

FIG. 2B is a display example when the screen switching key is pressed in the display state of FIG. 2A, and relates to the call connection such as the electric field strength 17 and the connectable system name 18 in FIG. This is an embodiment in which information is enlarged and displayed.

In FIG. 2B, reference numeral 11 denotes the electric field strength, and 12 denotes the name of a connectable system. The display of the system name is enlarged by 3 to make it easy to see the system name.

In this embodiment, when the screen switching key is pressed in the display state of FIG. 2B, the display returns to the standard mode display of FIG.
Processing is performed by the program of PU3 in response to the operation of the screen switching key. FIG. 3 is a flowchart showing the operation of the enlarged display processing.

The enlarged display processing will be described in further detail with reference to the flowchart of FIG.

In step 101, the presence or absence of a key input is determined.
Move to 2.

In step 102, it is determined whether or not the key input in step 101 is to set a screen switching. If NO, the process for the input code in step 103 is executed as normal display, and the process returns to step 101.

If YES in step 102, that is, if screen switching is to be set, the process proceeds to step 104.

In step 104, it is determined whether or not the current display is the standard mode display. If YES, and if the current display is the standard mode display, step 10 is performed to enlarge the display.
Step 5 is executed by executing the enlarged display (mode a) processing of Step 5
Return to

If the determination in step 104 is NO and the current display is not the standard mode display, the flow advances to step 106 to determine whether or not the current display is in the enlarged display mode a. To the standard display of
If YES, the enlarged display of step 107 (mode b)
And the process returns to step 101.

In this way, the processing of the enlarged display can be performed.

[0026]

As described above, according to the present invention, a screen switching key is set in a key input section for inputting display contents in an LCD character display mounted on a portable automobile telephone, and the screen switching key is depressed. By enabling the LCD unit to perform enlarged display, it is possible to provide an extremely easy-to-read display.

[Brief description of the drawings]

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

FIGS. 2A and 2B are diagrams illustrating a first example of an enlarged display of the embodiment of FIG. 1 and a diagram illustrating a second example;

FIG. 3 is a flowchart of a display process according to the embodiment of FIG. 1;

FIG. 4 is a diagram showing a standard display example of a conventional LCD display.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 LCD unit 2 LCD driver 3 CPU 4 Key input part 5 1st ROM 6 2nd ROM 7,15 am / 8pm, 16th day 9,13: 10,14: 11,17 Electric field intensity

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G09G 5/26 G06F 3/153 G09G 3/36 H04Q 7/38

Claims (2)

(57) [Claims] 1. An LCD comprising an all-dot matrix
A unit, an LCD driver for driving the LCD unit, a microcomputer having a microcomputer configured to control generation of a display screen to be displayed on the LCD unit,
A key input unit connected to the CPU for setting an input on a display screen; and a first R connected to the CPU for storing character data of a standard font to be displayed on the LCD unit.
It has a OM, a second ROM for storing character generating pattern data of the enlarged character body is connected to the CPU displays on the display screen of the LCD unit, a screen switching key
To the assigned, one key of the key input unit 1
By pressing the second time , the standard text is displayed on the LCD unit.
Using the character data of the font
Display screen, and press the screen switching key twice.
By pressing the eyes, the display screen in the standard font is displayed for 2 minutes
The character generation pattern data of the enlarged character body is used to edit the divided character for easier viewing and enlarged display .
The first and second expansion is a display screen by the prior SL enlarged character body
The first enlarged mode display screen of the large mode display screen
Screen, and the third press of the screen switching key
Switch to the second enlargement mode display screen,
By pressing the face switching key for the fourth time, the standard font
Return to the display screen by the standard font
Characterized by comprising a built said screen switching key sequence the LCD unit and the display screen the display screen the CPU a program for executing the Ru control by circulating the switching of each to be pressed so that the display again LCD character enlargement display system for portable car telephones. 2. An enlarged display performed by reading out character generation pattern data of the enlarged font contained in the second ROM under the control of the CPU, the display being performed in a plurality of columns of character data of the standard font. 2. The enlarged LCD character display method according to claim 1, wherein the display is performed using at least two columns of a standard screen.