JPH01277285A - Display controller - Google Patents

Abstract

PURPOSE:To enable a display device to be set at a state suitable for an application purpose and to obtain an image easy to recognize by providing an ordinary character font and the character font for rotating the character font by 90 deg.. CONSTITUTION:When a long sideway state signal 19 from a display device position circuit 18 is set at a positive value, a selector 5 sends a horizontal control signal group from a horizontal control circuit 1 to an image display device and a selector 6 sends a vertical control signal group from a vertical control circuit 2 to the image display device. When the long sideway state signal 19 is true, the selector 5 sends the vertical control signal group from the vertical control circuit 2 to the image display device as a horizontal control signal, and the selector 6 sends the signal group from the horizontal control circuit 1 to the image display device as the vertical control signal group. Thus, it is possible to obtain the image easy to recognize by setting the image display device longitudinally for a longitudinal image and setting it in a long sideway for the image of the long sideway.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a two-display mJ control device that can obtain a highly visible image by rotating one image.

(Conventional technology) With the development of man-machine interfaces.

Its core display is increasingly advanced 8! Noh started to get angry and stopped. Typical examples include color graphics processing and multi-quindocks. In addition, improvements in operability are required for tablets.

A typical example is the touch I4 channel.

(Measures to be Solved by the Invention) Conventionally, the display device 1 has a vertically long screen and one horizontally long screen, and when used for creating literary works, the vertically long screen is advantageous. However, K, which uses a horizontally long screen to grasp the whole picture, had a disadvantage in that it was very annoying to have to scroll the screen. On the other hand, when viewing a long image in equal area of a list image, there has hitherto been no display device that has both of these advantages.

The present invention has been made in view of the above circumstances.

It is an object of the present invention to provide a display control device 1 that has a rotatable display device and realizes display that takes advantage of the advantages of each display device, regardless of whether it is set in portrait or landscape mode.

[Structure of the Invention] (IR for solving the problem of confusion) The present invention provides a display system having a structure in which a uniform display device is rotated by 90 degrees, a notification means for informing a control device of a rotation direction; Means for switching the Mizuko control 4+ signal group and the -@ control decoder *1 sent to the display device by a signal given through the above communication means, and a normal character font and a character for 90° rotation with respect to the character font. A plane wave that is equipped with 7 onts of 2al and outputs this 211M of 7 onts depending on the above rotational state.

1! A vertical/horizontal converter that reads image data from the video memory and converts the image data vertically and horizontally depending on the rotational state of the display device.1! -What are the characteristics?

(Function) It has a drive structure for rotating the uniform display device,
In addition, by notifying the rotation state of the uniform display device to the rotational display control device and by switching between the horizontal control signal group and vertical control signal group sent to the uniform display device, 11! I! This realizes ll rotation.

This allows the display devices to be installed in a state that suits the intended use, and it is possible to obtain an image that is easy to see even if the display devices are installed at different positions.

(Example) An example of the present invention will be described in detail below using one drawing. FIG. 1 shows an example of the external configuration when the invention is implemented on a laptop mother-sonal combination device. As can be seen from the figure, (a) is an example in which the display device (DISP) is set horizontally and fI-, and (b) is an example in which the display device (DISP) is set vertically. Although it has a structure in which it is rotationally driven around a hinge, the gist of the invention is the Nf control device, so details will not be discussed.

FIG. 2 is a block diagram showing an embodiment of the present invention. In FIG. 0, 1 is a horizontal control circuit, which generates a group of horizontal control signals. 2 is a direct control circuit which generates a vertical control signal #P. This is the line through which the horizontal control signal group generated by the horizontal control circuit IK is transmitted. 4 is generated by the vertical control circuit 2! 1
This is the line through which direct control signals are propagated. 5 is a selector. The selector 5 selects a group of horizontal control signals to be supplied to the image display device. 6 is also a selector. The selector 6 selects a group of vertical control signals to be sent to the IA&I image display device. 7 is a group of horizontal control signals supplied to the III-conductor display device. 8 is a group of vertical control signals supplied to the uniform display device.

9 is a video memory for storing uniform data. 1
0 is a Roku δcan character generator, which is a circuit that generates a character font when the display device is in the horizontal position.

11 is a column scan character generator]
This is a circuit that generates a character font when the image display device is in a vertical position.

Reference numeral 12 denotes a vertical/horizontal conversion circuit, which reads 8-pit x 81-pit data from the video memory and converts the data vertically/horizontally. 13 is a selector. The selector 13 selects the character generator 10, 11 and the vertical/horizontal conversion circuit 12 described above and sends it to the parallel/serial conversion circuit 14. 14 is.

It is a parallel-to-serial conversion circuit that converts the /4-) parallel data given through the selector 13 into serial parallel data. 15
is the luminance signal sent to the image display device on the line along which the video signal propagates.

16ri is a graphics mode signal, which is a signal that is true when the graphics mode is set; 12 is a character mode signal, which is a signal that is true when the character mode is set.

Reference numeral 18 denotes a display device position circuit, which generates a signal to inform the controller of whether the display device is in landscape or portrait orientation in response to a command from a switch, keymate, or the like. Reference numeral 19 is a landscape state signal which indicates the horizontal position of the image display device. In addition, 20 is an inverter.

21. 22 is ANDr-), 23 is a horizontal signal, and a) is a signal indicating the horizontal position of the image display device in character mode, and 24 is a vertical signal, indicating that one image display device is vertical in character mode. The signal indicating the position, 25 is a row address signal], which is a signal indicating the address in the horizontal direction of the video memory. Reference numeral 26 denotes a column address signal which indicates an address in the 4j1 vertical direction of the video memory.

27 is a row address/column address conversion circuit, which converts the row address/column address depending on the rotation direction of the image display device.
This is a circuit that converts column addresses.

FIG. 3 is a diagram cited for explaining the operation of the embodiment of the present invention, and shows the generation of character signals in reed and character display in the case of horizontally long display and the case of vertically long display, respectively.

The operation of one embodiment of the present invention will be described in detail below. FIG. 1 is a diagram showing an example of a laptop computer that implements the present invention, and the structure for rotationally driving a single image display device is not mentioned here. FIG. 2 shows a circuit that implements the present invention. This shows the configuration. The horizontal control circuit 1 is a circuit that holds horizontal control information from a host and generates a group of horizontal control signals. f! [The control circuit 2 is a circuit that holds vertical control information from the host and generates a group of vertical control signals. When the horizontal state signal (line 19) from the display device position circuit 18 is positive, the selector 5 sends a group of horizontal control signals from the horizontal control circuit 1 to the 1ait* display device. At this time, a group of vertical control signals from the selector gFi-direct control circuit 2 is sent to the image display device. When the landscape state signal (line 19) is true, the selector 5 sends a group of vertical control signals from the vertical control circuit 2 to the image display device as horizontal control signals. Similarly, the selector 6 sends the signal group from the horizontal control circuit 1 to the image display device as a vertical control signal group. To explain the flow of image data in character display, I! When the Ii image display device is in landscape orientation, a conventional character font is used, but when it is in portrait orientation, a character font rotated by 9011 is used. It is also assumed that the image data in the video memory 9 in the vertically oriented state is converted in the X direction and Y direction by software or firmware.

Regarding the circuit operation when the image display device is in the landscape state, first, the 8-bit code data from the video memory 9 becomes a character address of the row scan character generator 1°. The raw scan character generator 10 is
Generates a character 7 ont that is cured into a character code. Since the horizontal signal (line 23) is positive, the selector 13 selects the row scan character generator 101 and sends the parallel-to-serial conversion circuit 14tlC data. The parallel-to-serial conversion circuit 14 converts the parallel data into serial data and sends it to an image display device as a video signal.

When the image display device is in the portrait state, the selector 13 selects the column scan character generator 11 because the landscape state signal (line 19) is true, and sends data to the parallel-to-serial conversion circuit 14. In the portrait state of graphics display, the data in the video memory 19 needs to be converted in the X direction/Y direction, similar to character display. What is the circuit operation?

The picture glfa from the video memory 9 is latched into an 8x8 pit buffer in the 8x81 vertical/horizontal conversion circuit 13, and when the image display device is in landscape mode, the horizontal
When the image display device is in a vertically oriented state, 8 bits of data in the vertical direction are sent out. Selector 13
Since the graphics mode signal (line 16) is positive, selects the vertical/horizontal conversion circuit 12 and sends data to the parallel/serial conversion circuit J4.

[Effects of the Invention] According to the present invention as described above, a vertically long image can be displayed by making the image display/scale chair vertically long and displaying a horizontally long II! II statue.

By setting the image display device horizontally, it is possible to obtain an image that is easier to see. Also, laptop computers, tunaru combinations, word processors, etc.

The present invention allows the entire system to be made into four components while increasing the image display area.
Connectivity of layers can be realized.

[Brief explanation of the drawing]

Figure 1 shows two of the inventions! FIG. 9 is a diagram showing an example of the external configuration of the top personal combinator. FIG. 2 is a block diagram showing an embodiment of the present invention, and FIG. 3 is a diagram cited to explain the operation of the embodiment of the present invention.
! ＞, The generation of character signals in character display is shown in the case of horizontally long display and the case of vertically long display, respectively. 1...Horizontal control circuit, 2...Vertical control circuit%5,6
゜13... Selector, 10... Row scan character generator, 11... Column scan character generator, 12... Vertical/horizontal conversion circuit, 18...
Display device position circuit, 22... Row address/column address conversion circuit. Applicant's agent Patent attorney Takehiko Suzue Figure 1

Claims (1)

[Claims] In a display system having a structure in which an image display device can be rotated by 90 degrees, a notification means for informing a control device of a rotation direction, and a group of horizontal control signals and a group of vertical control signals to be sent to the image display device are transmitted via the notification means. It is equipped with means for switching based on a given signal, and two types of character fonts: a normal character font and a character font for rotating the character font by 90 degrees.
1. A display control device comprising means for selectively outputting different types of fonts, and an aspect conversion means for reading image data from a video memory and converting the image data vertically and horizontally depending on the rotational state of an image display device.