JPH04329458A - Portable electronic equipment device capable of upside/ downside reversible display - Google Patents

Abstract

PURPOSE:To obtain a portable terminal equipment constituted so as to turn the upside of a display screen down by operating keys without reversing the direction of the portable electronic equipment. CONSTITUTION:This device is provided with a normal picture storing means 11 to store a normal picture suitable for normalization, a inverted picture storing means 13 to store a picture in a inverted state by reversing the upside/downside and right side/left side of the picture stored in this normal picture storing means 11, a display means 17, and a display switching means 14 to switch and connect any one of the two picture storing means 11 and 13 to the display means 17. Then, the normal picture stored in the normal picture storing means 11 or the converted-state picture stored in the converted picture storing means 13 are alternately switched and displayed at the display means 17 by operating reversing key 16.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to portable electronic equipment suitable for customer-facing use.

0002

[Prior Art] In conventional portable electronic devices,
The content displayed on the screen could only be displayed in one direction suitable for the operator's direct vision.

0003

[Problems to be Solved by the Invention] As described above, in conventional electronic devices, the display direction of the screen is facing the user of the portable electronic device, so it is difficult to view the display screen while facing the customer. When giving explanations while using the device, there is the inconvenience of having to reverse the orientation of the portable electronic device before showing the display screen to the customer.

The present invention solves the problems of the conventional display screen, and provides a portable electronic device configured to turn the display screen upside down by key operation without reversing the orientation of the portable electronic device. The purpose of this invention is to provide an electronic device for use in electronic devices.

[0005]

[Means for solving the problem] A normal screen storage means for storing a normal screen suitable for normal vision, and a screen in an inverted state by inverting the screen stored in the normal screen storage means vertically and horizontally. The apparatus includes an inverted screen storage means for storing, a display means, and a display switching means for switching and connecting one of the two screen storage means to the display means.

[0006]

[Operation] The normal screen stored in the normal screen storage means or the inverted screen stored in the inverted screen storage means are alternately switched and displayed on the display means each time the reverse key is operated. .

[0007]

[Embodiment] (First embodiment) As shown in Fig. 1, normal screen storage means 1 stores display contents in a dot pattern.
1 and the dot matrix type display means 17,
Screen reversing means 20, inverted screen storage means 13 for storing an inverted screen, display switching means 14, and reversing key 16
and an inversion key monitoring means 15 which checks the depression state of this inversion key and instructs the display switching means 14 to switch the display every time the inversion key is depressed.

As shown in FIG. 2, the size of the display screen of the dot matrix type display means 17 is as shown in FIG. - As shown in FIG. 3, the pattern storage addresses are from address 0 to address (mn-1), and each row of dot patterns is stored in one storage address in groups of 8 dots. In the normal screen storage means 11 and the inverted screen storage means 13, the dot pattern at each address shown in the frame of FIG. 2 is stored at that position.

[0009] If such a screen storage method is adopted,
The storage form of the screen in the normal screen storage means 11 and the inverted screen storage means 13 is stored in a continuous area from address 0 to address (mn-1), as shown in FIG.

The screen stored in the normal screen storage means 11 is inverted vertically and horizontally by the screen reversing means 20 and stored in the inverted screen storage means 13.

A method of inverting the screen will be explained with reference to FIG. Dot pattern reading section 21 of screen reversing means 20
Then, dot patterns (A to D) are sequentially read from address 0 at the beginning of the normal screen storage means 11. The normal dot patterns (A to D) that have been read are converted into dot patterns by the dot pattern reversing unit 22, with the upper and lower parts (left and right) reversed by 8 dots, as shown in FIG.
d to a) are formed and sent to the dot pattern writing section 24. Further, the reading address (x) of the normal screen storage means 11 from which the normal dot patterns (A to D) have been read is subjected to the calculation (mn-1-x) in the address reversing section 23,
An address with the top and bottom reversed is created and sent to the dot pattern writing section 24.

The dot pattern writing section 24 stores dot patterns (d to a) inverted by 8 dots at addresses (mn-1-x) of the inverted screen storage means 13.

Next, the screen reversal switching operation will be explained. In FIG. 1, when the reversal key 16 is operated by the operator of the electronic device, the reversal key monitoring means 15 checks whether the reversal key 16 has been pressed down, and changes the display switching means 14 to the display switching means 14 each time the reversal key 16 is operated. Issues a display switching signal. Each time this switching signal is received, the display switching means 14 alternately switches and connects the display means 17 to the normal screen storage means 11 or the inverted screen storage means 13.

In this manner, each time the display screen is switched by operating the inversion key 16, the screen can be displayed in an inverted state without changing the displayed content.

(Second Embodiment) As shown in FIG. 6, a normal character generator 30 and an inverted character generator 31 are provided, and the normal character generator 30 generates normal screen data from data to be displayed. form and store it in the normal screen storage means 11,
The inverted character generator 31 generates data of an inverted screen and stores it in the inverted screen storage means 13. Further, an address generation section 12 is provided, and this address generation section 12 generates address data from address 0 to address (mn-1), which is inverted in an address inversion section 18 and from address (mn-1). Address data inverted to address 0 is generated and guided to the changeover switch 19.

When storing screen data, this changeover switch 19 is connected to the address reversing section 18 and stores the screen data from address (mn-1) of the inverted screen storage means 13. When reading screen data from the screen storage means 13, the inverted screen data is read from address 0 of the inverted screen storage means 13 connected to the address generation section 12.

The data to be displayed is generated by the normal character generator 30.
In the inverted character generator 31, normal characters and inverted characters are simultaneously generated and stored simultaneously in mutually inverted addresses of the normal screen storage means 11 and the inverted screen storage means 13, respectively.

Similar to the device of the first embodiment described in FIG. 1, each time the inversion key 16 is operated to switch the display screen, the screen is displayed in an inverted state without changing the displayed content. be able to.

[0019]

Effects of the Invention As is clear from the above description of the embodiments, according to the portable electronic device of the present invention, by pressing down the inversion key, the normal display screen and the inverted display screen can be switched. When using the electronic device face-to-face, it is possible to produce an excellent effect in that a normal display screen can be shown to the face-to-face person without reversing the orientation of the electronic device itself.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a portable electronic device of the present invention;

FIG. 2 is a diagram showing the display screen size and dot pattern storage addresses in the device shown in FIG. 1;

FIG. 3 is a diagram showing the arrangement of storing dot patterns on a display screen in a storage device;

FIG. 4 is a block diagram showing screen reversing means in the device shown in FIG. 1;

[Fig. 5] A diagram showing the operation state of horizontally reversing the dot pattern,

FIG. 6 is a block diagram showing another embodiment of the portable electronic device of the present invention.

[Explanation of symbols]

11 Normal screen storage means 13 Inverted screen storage means 14 Display switching means 16 Inversion key 20 Screen reversing means

Claims (1)

[Claims] 1. Normal screen storage means for storing a normal screen suitable for normal vision, and an inverted screen for storing an inverted screen by inverting the screen stored in the normal screen storage means vertically and horizontally. a storage means, a display means, and the above-mentioned 2
1. A portable electronic device capable of vertically inverted display, comprising: switching means for switching and connecting one screen storage means to the display means.