JP2001125550A - Device and method for display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a viewer and an operator to easily recognize an enlarged display region. SOLUTION: The objective is realized by providing an input means which inputs display information of images and characters, an output means which outputs display information of images and characters, an operation input means which inputs the commands to enlarge or to reduce a desired display region of the information of the images and the characters inputted by the input means, and a control means which differentiates the display forms of an enlarged display region and other regions when the display information of the images and the characters is enlarged and displayed in accordance with the commands of the operation input means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a display method for displaying image or character display information, and more particularly to a display device having a function of enlarging and displaying a part of image or character display information. The present invention relates to a display device and a display method.

[0002]

2. Description of the Related Art When a personal computer (hereinafter referred to as a personal computer) is connected and an image thereof is projected on a screen by a projector, a presenter who plays a presentation when a presentation is made to a large number of people is displayed. There is a case where a part of the displayed screen is enlarged and displayed so that the information of the image is easily displayed to the viewer.

[0003] In order to enlarge the display, before entering the enlargement operation,
An arrow icon or the like is displayed on the screen using a function provided in a remote controller (hereinafter, referred to as a remote controller) or the like, and a desired enlarged area is selected.

[0004]

However, when such an arrow icon or the like has a similar brightness or color to the displayed screen, it is difficult for the presenter as well as the viewer to determine its position. In some cases, the user loses sight of the image and does not know where the image is being enlarged even if the user performs the enlargement operation.

[0005] Further, once the user loses sight of the arrow icon, it is complicated to operate the switch for switching the display or non-display of the arrow icon again.

As a result, it is difficult to confirm the enlarged area before the enlargement operation, so that there is a problem that the enlarged display cannot be performed smoothly.

Therefore, the present invention has been devised to solve the above-described problem, and when enlarging or reducing display, the difference in display form between the enlarged display area and the other areas is clarified. It is another object of the present invention to provide a display device and a display method that allow a viewer and an operator to easily recognize an enlarged display area before performing an enlargement operation.

[0008]

In order to achieve the above object, a display device according to the present invention comprises an input means for inputting image or character display information and an output means for outputting image or character display information. And an operation input unit for inputting an instruction for enlarging or reducing a desired area of the image or character display information input by the input unit, and expanding the image or character display information in accordance with the instruction of the operation input unit. When displaying, the display device is provided with control means for making a difference in the display form between the enlarged display area and the other areas.

The display device according to the present invention configured as described above visually distinguishes the two regions by making a difference in the display form between the region to be enlarged and displayed and the other region.

In order to achieve the above object, a display method according to the present invention provides a display method for inputting display information of an image or character, selecting an enlarged display area when enlarging the image or character, and selecting the selected enlarged display area. It is characterized in that display information of an image or a character is output by making a difference between the display form of the area and the display form of the other area.

In the display method according to the present invention having the above-described configuration, the area to be enlarged and displayed and the other areas are controlled so that the two areas can be visually distinguished.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a display device and a display method according to the present invention will be described in detail with reference to the drawings.

In the embodiment of the present invention, an example in which a personal computer (hereinafter referred to as a personal computer) is connected as a display device and a projector that optically projects display information of images or characters is used will be described. .

First, FIG. 1 is a block diagram illustrating a circuit configuration of a projector.

The projector 1 includes a signal light receiving section 2, an external signal input section 3, a storage section 4, an internal signal generation section 5, an internal signal / external signal synthesis section 6, and a main CPU (Central).
(Processing Unit) 7 and an output unit 8.

The signal receiving section 2 receives an input signal from a remote controller (hereinafter referred to as a remote controller) 11 for remotely controlling the projector 1 by inputting a command for selecting or moving an enlarged or reduced display area, and transmits the signal to the main CPU 7.

The external signal input section 3 is an interface for connecting the personal computer 10 for inputting image or character display information as an external signal to the projector 1. The input external signal is controlled by the main CPU 7 to output an internal signal or an external signal. The signal is sent to the signal synthesizing unit 6.

The storage unit 4 can read and write information at any time, for example, an SDRAM (Static Dynamic Rando).
m Access Memory), and the external signal input from the personal computer 10 is written through the external signal input unit 3 and the internal signal / external signal synthesizing unit 6.

Under the control of the main CPU 7, the internal signal generating section 5 generates a rectangular signal for indicating a rectangular window pattern and a luminance level signal or a color control signal as an internal signal at the time of enlarged display.・ Send to the external signal synthesizing unit 6.

The rectangular signal generates, for example, a rectangular window pattern which is a similar figure of 1/16 of the display screen.
This is a signal for displaying an external signal within the frame of the rectangular window pattern as an enlarged display area.

The luminance level signal is a signal for adjusting the luminance on the display screen. For example, it is a signal for displaying an image with the luminance set to 1 to emphasize the area specified by the above-described rectangular signal and setting the luminance of the other areas to 1/2.

The color control signal is a signal for controlling the color tone of the image to be output and displayed. For example, the color control signal controls the area specified by the above-described rectangular signal of the image by emphasizing green and blue tones other than red by half, so that the area is highlighted in red. , And a signal for displaying other areas by reducing the color tone of red and green other than blue to half.

The internal signal / external signal synthesizing unit 6 includes a storage unit 4
, And combines the read external signal with the rectangular signal, the luminance level signal, or the color control signal generated by the internal signal generator 6. The synthesized external signal and internal signal are sent to the output unit 8.

When there is no input of the internal signal, the internal signal / external signal synthesizing section 6 sends the external signal input from the personal computer 10 to the output section 8 as it is. that time,
The internal signal / external signal synthesizing unit 6 writes the same signal as the external signal sent to the output unit 8 to the storage unit 4.

The main CPU 7 controls the external signal input section 3, the internal signal generation section 5, and the internal signal / external signal synthesis section 6 as a whole.

The output section 8 includes an internal signal / external signal synthesis section 6
Optically project images or characters sent from the

Next, the main functions of the remote controller 11 will be described with reference to the schematic front view of the remote controller 11 shown in FIG.

The remote controller 11 includes an enlarge button 12, a reduce button 13, a position selection controller 14, and an input signal output unit 15.

The enlargement button 12 is a switch for increasing the magnification. The enlargement button 12 is marked with a “+” mark, and increases by a predetermined magnification each time the button is pressed. The selected enlarged display area is, for example, 30 steps from the same magnification state to the maximum magnification of 16 times, that is, the enlargement button 1
It is reached by pressing 2 30 times. It should be noted that the enlargement magnification increases even if the enlargement button is kept pressed.

The enlargement button 12 also serves as a switch for switching between displaying and hiding a rectangular window pattern. When the enlargement button 12 is pressed once in the initial state, for example, a rectangular window of 1/16 of the screen is displayed at the center of the screen.

The reduction button 13 is a switch for lowering the reduction magnification. "-" Is written on the reduction button 13, and each time the button is pressed, the reduction button 13 is reduced by a predetermined magnification.

The position selection controller 14 is, for example, a cross key or the like, and can move a rectangular window up, down, left, and right on a display screen, and selects an enlarged display area. For example, if the size of the rectangular window pattern is set to 1/16 of the display screen and the display screen is divided vertically and horizontally into eight, the possible positions of the rectangular window pattern are 49
It becomes street.

The position selection controller 14 can operate the cross key to change the enlarged display area or select a reduced display area while the enlarged display is being performed even after the enlarged display.

The input signal output unit 15 includes an enlarge button 12,
Input signals from the reduction button 13, the position selection controller 14 and the like are output and input to the signal light receiving unit 2 of the projector 1.

The enlargement button 12, the reduction button 13, and the position selection controller 14 of the remote controller 11 have a controller having the same function in the projector 1 itself, and can be operated by the projector 1 alone.

The remote controller 11 may be provided with a display panel or the like indicating the input status. For example, the display panel is a liquid crystal display (LCD) with a backlight.
play), etc., to display magnification information and the like to visually notify the operator.

Next, the enlarged display operation will be described with reference to the flowchart shown in FIG.

Before proceeding to the step, it is assumed that an image formed only by an external signal is output from the output unit 8 as an initial state. For example, from the output unit 8, as initial states, numerals 1 to 8 as shown in FIG.
An image in which alphabets up to H are displayed at equal intervals and at the same size is output.

The dotted lines on the display screen are for explaining the movement of the rectangular window pattern, and are not displayed on the actual display screen. The dotted line divides the display screen into 64 blocks, and the blocks are similar in shape to the display screen. For example, if the aspect ratio of the display screen is 4: 3, the blocks are also 4: 3. The minimum unit of the block surrounded by the dotted line is the minimum unit of vertical or horizontal movement of the rectangular window pattern.

First, in step S1, the main CPU 7
Determines whether the enlarge button 12 of the remote controller 11 has been pressed. When the enlargement button 12 is pressed, an input signal is transmitted from the input signal output unit 15 and transmitted to the main CPU 7 via the signal light receiving unit 2 of the projector 1. The main CPU 7 having received the input signal from the signal light receiving unit 2
Enter the enlargement / reduction mode and proceed to step S2. Also,
If the enlargement button 12 is not pressed, the display screen remains in the initial state, for example, as shown in FIG.

In step S2, the main CPU 7 controls the internal signal generator 5 to generate a rectangular signal and a luminance level signal as internal signals. Note that the luminance level signal may be a color control signal. Internal signal / external signal synthesis unit 6
Reads an image in an initial state, which is an external signal written in the storage unit 4, and combines the image with an internal signal. The synthesized signal is output from the output unit 8 as an image.

In the output image, a rectangular window pattern is displayed in the center of the display screen, and the luminance of the display screen does not change the luminance of the area surrounded by the rectangular window pattern, and the luminance of the other areas is 2. It is displayed in a state where it has been dropped by one part.

For example, when the display screen in the initial state shown in FIG. 4 enters the enlargement / reduction mode, as shown in FIG. 5, a rectangular window pattern of a similar figure of 1/16 of the display screen is displayed. The luminance outside the enlarged display area displayed in the center of the screen and indicated by the rectangular window pattern is reduced by half. This makes it possible to clearly distinguish the enlarged display area indicated by the rectangular window pattern from other areas.

If the size of the rectangular window pattern is a similar figure of 1/16 of the display screen as shown in FIG. 5, there are 49 enlarged display areas.

Subsequently, in step S3, the main CPU 7
Determines whether an input from the position selection controller 14 for moving the rectangular window pattern up, down, left, or right has been made. Position selection controller 14
When any of the inputs is performed in the up, down, left, and right directions, the input signal is transmitted from the input signal output unit 15 of the remote controller 11,
The main CPU 7 via the signal receiving unit 2 of the projector 1
To step S4. If there is no input from the position selection controller 14, the process proceeds to step S5.

In step S4, the main CPU 7 controls the internal signal generator 5 according to the input signal to move the rectangular window pattern of the internal signal. For example, when a rightward input is made to the position selection controller 14, the internal signal generation unit 5 stops sending a rectangular signal for generating a rectangular window pattern positioned at the center on the display screen, and newly sends a rectangular signal. , A rectangular signal such that a rectangular window pattern appears at a position to the right of the center, and sends it to the internal signal / external signal synthesizing unit 6. The internal signal / external signal synthesizing unit 6 synthesizes the new rectangular signal and the external signal and sends them to the output unit 8.

Accordingly, the internal signal generator 5 sets the area where the new rectangular window pattern appears to the same luminance as the initial state, and sets the luminance of the other areas to 2 which is the initial state luminance.
A luminance level signal that becomes 1/1 is generated, and the internal signal / external signal synthesizing unit 6 synthesizes the luminance signal with an external signal.

Therefore, even if the rectangular window pattern is moved from the center of the display screen, the brightness of the enlarged display area is
Same as the initial state, the brightness of other areas is half
It remains.

In step S5, the main CPU 7 determines whether the enlarge button 12 has been pressed. If the enlargement button 12 is not pressed, the process proceeds to step S6. When the enlargement button 12 is pressed, the input signal input from the enlargement button 12 is transmitted from the input signal output unit 15 of the remote controller 11 and transmitted to the main CPU 7 via the signal light receiving unit 2 of the projector 1 and proceeds to step S7. Proceed to.

In step S6, the main CPU 7 determines whether or not the reduction button 13 has been pressed. When the reduction button 13 is pressed, the input signal input from the reduction button 13 is transmitted from the input signal output unit 15 of the remote controller 11 and transmitted to the main CPU 7 via the signal light receiving unit 2 of the projector 1 and proceeds to step S8. Proceed to. If the reduction button 13 is not pressed, the process returns to step S3.

Since the minimum reduction magnification is the magnification displayed in the initial state, if the display screen is not enlarged and displayed, the process always proceeds to step S3. In other words, when the display screen has the same magnification as the initial state, the process does not proceed to step S8 even if the reduction button 13 is pressed, and no reduction display is performed.

To move the rectangular window pattern to a desired position, the position selection controller 14 is pressed in step S3, and the rectangular window pattern is moved in step S4 in response to the input in step S3.
If the enlarge button 12 is not pressed in step S5,
The loop of returning to step S3 without pressing the reduction button 13 in step 6 may be repeated.

For example, in order to move the rectangular window pattern to the upper left end of the display screen as shown in FIG. 6, an upward input is made from the position selection controller 14 in step S3, and the rectangular window pattern is moved in step S4. Is moved up by one block, the loop in which the enlargement button 12 is not pressed in step S5, the reduction button 13 is not pressed in step S6, and the process returns to step S3 is repeated three times, followed by the position selection controller 14 in step S3.
, The rectangular window pattern is moved one block to the left in step S4, the enlargement button 12 is not pressed in step S5, the reduction button 13 is not pressed in step S6, and the process returns to step S3. The loop may be repeated three times.

In step S7, the main CPU 7 controls the internal signal / external signal synthesizing unit 6 to read out the external signal corresponding to the selected enlarged display area from the storage unit 4, and presses the enlargement button 12 once. Is converted to a signal of the magnification obtained in the above. The converted signal is sent to the output unit 8. At this time, on the display screen, only the enlarged and displayed area is displayed with the brightness in the initial state.

In order to display the enlarged display area at a desired magnification, the process returns from step S7 to step S3, where no input is made by the position selection controller 14 in step S3, and the enlargement button 12 is pressed in step S5. Then, the loop of enlarging the display in step S7 and returning to step S3 may be repeated.

For example, in order to enlarge the enlarged display area shown in FIG. 6 four times as shown in FIG. 7, after step S4 is completed, the enlarge button 12 is pressed in step S5, and the enlarged display is performed in step S7. Returning to step S3, step S3
Then, a loop in which no input is made by the position selection controller 14 and the process proceeds to step S5 may be repeated until the magnification becomes 4 times.

Further, for example, as shown in FIG. 8, in order to enlarge the enlarged display area shown in FIG. 6 by 16 times, similarly to the case of enlargement by 4 times, after the step S4 is completed, an enlarge button is clicked in step S5. 12 is pressed, the display is enlarged in step S7, the process returns to step S3, and the process proceeds to step S5 without input by the position selection controller 14 in step S3, and the loop may be repeated until the magnification becomes 16 times.

If the size of the rectangular window pattern is a similar figure of 1/16 of the display screen, the maximum magnification is 1
Since it is six times, as shown in FIG. 8, the enlarged display area indicated by the rectangular window pattern in FIG. 6 is displayed on the entire display screen.

As shown in FIG. 7 and FIG.
When the enlarged display area is enlarged by this, the brightness of the display screen disappears, and the display screen has the same brightness as the initial state.

In order to move the enlarged display area while enlarging it as shown in FIG. 9, for example, the image is enlarged 16 times as shown in FIG. 8, that is, from step S7 to step S3. Returns to step S3, the rightward input of the position selection controller 14 is performed, and step S4
Moves the display screen to the right by one block, and returns to step S3 without pressing the enlargement button 12 in step S5 and the reduction button 13 in step S6.
It is sufficient to repeat the operation twice, and the enlarged display screen is moved by the minimum three blocks surrounded by the dotted line.

In step S8, the main CPU 7 controls the internal signal / external signal synthesizing unit 6 to read out the external signal corresponding to the selected display area from the storage unit 4, and the reduction button 13 is pressed once. The signal is converted into a signal having the obtained magnification. The converted signal is sent to the output unit 8, and the process proceeds to step S9.

In step S9, it is determined whether or not the display screen has the same magnification as the initial state. If the display screen has the same magnification as the initial state, the enlargement / reduction mode is canceled and the process ends. If the display screen is not at the same magnification as the initial state, the process returns to step S3.

In order to reduce the display screen to the desired magnification, it is determined in step S9 that the display screen is not at the same magnification as the initial state, and the process returns to step S3. It is preferable to repeat the loop of proceeding to step S5, in which the enlargement button 12 is not pressed in step S5, the reduction button 13 is pressed in step S6, and the display is reduced in step S8.

For example, in order to reduce the enlarged display area from 16 times to 4 times as shown in FIG. 10, it is determined in step S9 whether or not the display screen shown in FIG. 9 has the same magnification as the initial state, and the flow advances to step S3. Return to step S3, the input of the position selection controller 14 is not made, the enlargement button 12 is not pressed in step S5, and the reduction button 13 is pressed in step S6.
Is pressed, and a loop of reducing the display in step S8 may be repeated until the loop becomes quadruple.

In the display screens shown in FIGS. 9 and 10, when the upper key of the position selection controller 14 is pressed three times, the rectangular window pattern is moved three blocks from the center of the display screen, and the enlarge button is clicked. 12 are 16 times each,
It is the same as pressing the button until it is quadrupled, and displaying the image accordingly.

As described above, the brightness of the enlarged display area selected by the rectangular window pattern having a size of 1/16 of the display screen and that of the other areas are differentiated, and the enlarged display area is visually shown in advance. Thus, even if the magnification is increased to 4 times or 16 times, the enlarged display area is not lost.

The output unit 8 is not limited to a device for optically projecting images or characters, but may be a plasma display panel, a liquid crystal display panel, or a large display panel in which light emitting diodes are arranged in a matrix.

Further, the present invention is not limited to use in presentations, and can be applied to a display device which can display only a small number of pixels and which displays an image having a high number of pixels. For example, when an image having 1024 × 768 pixels is input to a display device for personal use having a maximum display pixel number of 500 × 500, the entire image is 1
Although the number of pixels is reduced from 024 × 768 to 500 × 500, the enlarged display area can be displayed with 1024 × 768 pixels by using the enlarged display function.

[0069]

As is clear from the above description, the display device of the present invention visually distinguishes the two areas by making a difference between the display form of the area to be enlarged and displayed and the other areas. This allows the viewer and the operator to easily recognize the enlarged display area.

Further, the display method of the present invention makes it possible for the viewer and the operator to make a difference between the area to be enlarged and displayed and the other area so that the two areas can be visually distinguished from each other. Can be easily recognized.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a structure of a display device described as an embodiment of the present invention.

FIG. 2 is a schematic front view for explaining a remote controller for operating the display device.

FIG. 3 is a flowchart for explaining an operation when the display screen is enlarged in the display device.

FIG. 4 is a diagram showing an example of a display screen in an initial state in which only an external signal is output from an output unit in the display device.

FIG. 5 is a diagram showing an example of a display screen when a rectangular window pattern representing an enlarged display area is displayed on the display device.

FIG. 6 is a diagram showing an example of a display screen when the rectangular window pattern is moved by a position selection controller of a remote controller in the display device.

FIG. 7 is a diagram showing an example of a display screen when the enlarged display area is enlarged four times in the display device.

FIG. 8 is a diagram showing an example of a display screen when the enlarged display area is enlarged 16 times in the display device.

FIG. 9 is a view showing an example of a display screen when the display device is moved while the enlarged display area is enlarged 16 times.

FIG. 10 is a diagram showing an example of a display screen when the enlarged display area is reduced from 16 times to 4 times in the display device.

[Explanation of symbols]

Reference Signs List 1 projector, 2 signal light receiving section, 3 external signal input section, 4 storage section, 5 internal signal generation section, 6 internal signal / external signal synthesis section, 7 main CPU, 8 output section

Claims (8)

[Claims] 1. An input unit for inputting display information of an image or a character, an output unit for outputting display information of the image or a character, and a desired area of the display information of the image or the character input by the input unit Operation input means for inputting a command for enlarging or reducing the image, and displaying an enlarged display area and other areas when the display information of the image or the character is enlarged and displayed according to the instruction of the operation input means. A display device, comprising: control means for giving a difference in form. 2. The display device according to claim 1, wherein the control unit makes a difference between a display mode of the enlarged display area and a display mode of another area based on luminance when the display information of the image or the character is enlarged and displayed. The display device according to 1. 3. The display device according to claim 2, wherein the control unit, when enlarging and displaying the display information of the image or the character, makes a difference in a display mode between the enlarged display area and the other area by a color. The display device according to 1. 4. The display device according to claim 1, wherein the output unit optically projects the display information of the image or the character. 5. An image or character display information is input, and when enlarging the image or character, an enlarged display area is selected, and the display form of the selected enlarged display area is different from the other display areas. And displaying the image or character display information. 6. The display method according to claim 5, wherein, when the display information of the image or the character is enlarged and displayed, a display mode of the enlarged display area and a display form of the other area are differentiated by luminance. . 7. The display method according to claim 5, wherein, when the display information of the image or the character is displayed in an enlarged manner, a display form of the enlarged display area and a display area other than the enlarged display area are differentiated by color. . 8. The display method according to claim 5, wherein the display information of the image or the character is optically projected and output.