JPH11327519A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display respective videos in optimum forms when videos different in display form such as a still picture, a moving picture, character information and the like coexist. SOLUTION: This display device is provided with storage parts 21A, 21B for separately storing set values of first and second picture processing states, a control signal detecting part 10C for detecting a control signal specifying the arbitrary range of a picture to be displayed and a picture control part 23 which applies picture processing by the first set value stored in the storage part 21A to a picture being in the range to be shown by the control signal detected by the control signal detecting part 10C and applies picture processing by the second set value stored in the storage part 21B to a picture being out of the range to be shown by the control signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device suitable for application to, for example, a display device for computer equipment, and more particularly to a display device of a different form so as to simultaneously display a still image, a moving image, and character information. Related to a technique suitable for displaying simultaneously on one screen.

[0002]

2. Description of the Related Art For example, in a monitor display device for displaying an output from a computer, the main purpose has conventionally been to display information such as characters and numerals such as documents and spreadsheets output from the computer. . For this reason, it has been a general use of a monitor display device to display an image signal supplied from a computer as a binary signal of “1/0” at an appropriate luminance level.

On the other hand, a computer called a multimedia in recent years captures not only information such as the characters and numerals described above but also an image such as a photograph or a moving image, and converts the captured image into an arbitrary image called a window. The display in the range has been done. In such a case, the captured image such as a photograph or a moving image has lower contrast and sharpness than information such as characters and numbers, and when these are displayed together, the image quality of the photograph or the moving image or the like is reduced. It appears to be significantly degraded.

Conventional television receivers have conventionally employed image quality improvement measures such as enhancing the contrast by increasing the luminance level and enhancing the sharpness by enhancing the contour. However, in a monitor display device, if the brightness level of information such as characters and numbers is increased to enhance the contrast or the sharpness is enhanced by contour enhancement, the information such as characters and numbers becomes rather difficult to read or read. It is a mess.

[0005] In order to solve this problem, the present applicant has previously proposed an image in which the contrast of a partial range of an image displayed on a display device can be enhanced. (For example, Japanese Patent Application No. Hei 10-88958). FIG.
Shows an example of contrast control in the image display device proposed earlier. The vertical axis indicates the amplitude of the video signal, and the horizontal axis indicates the contrast adjustment value.
This is an example in which six-stage settings are possible. In FIG. 6, the setting range a ′ to b ′ of the amplitude of the video signal indicated by the solid line
Is a contrast setting range in a region where contrast is not emphasized (region in a normal display state). Then, within the range in which the contrast is emphasized, the video signal amplitude ranges from (a '+ c') to (b '+ c') indicated by a broken line obtained by adding a constant value c 'to each video signal amplitude. .

FIG. 7 shows an example of brightness control in the previously proposed image display device. Also in this example, 25 from the adjustment value 0 to the adjustment value 255
For example, when the contrast adjustment value is set to the maximum value max, as shown by a solid line in the region of the normal display state, the amplitude of the video signal by the brightness control is e ', as shown in FIG. (Changes at a constant rate up to a certain adjustment value as shown), and within a range where contrast is emphasized, an amplitude (e '+ h) indicated by a dashed line to which a constant value h' is added. ') ~
(F '+ h'). When the contrast adjustment value is set to the minimum value min, the amplitude of the video signal by the brightness control is g 'as shown by the solid line in the normal display area, and is constant within the range where the contrast is enhanced. And the amplitude (g ′ + h ′) indicated by the broken line obtained by adding the value h ′.

[0007]

As described above, in the adjustment of the image display device proposed above, simply, a certain value is set higher or a certain ratio is set higher within a range where contrast is emphasized. Because it was a process to set, even if you performed the image display process proposed earlier,
In some cases, it cannot be said that an image in which characters and images are mixed is optimally displayed.

For example, in a display device for a computer device, when a display is performed using, for example, spreadsheet software or the like, the user can use the display device with a considerably reduced contrast so that the table and characters are displayed in an easily viewable state. There are many things to set. In such a case, when an image such as a moving image is displayed in a part of the video,
Even if the contrast of the display range of the image is set to be enhanced, the contrast is still low for displaying a moving image, and the contrast enhancement function cannot be effective.

In order to avoid such a situation, it is necessary to set the contrast every time the type of the displayed image changes, and there is a problem that the setting operation is troublesome.

An object of the present invention is to display an image such as a still image or a moving image and an image of a different display form such as character information in an optimal form when the image is mixed.

[0011]

SUMMARY OF THE INVENTION The present invention provides first and second embodiments.
A storage unit that individually stores the set values of the image processing states, a control signal detection unit that detects a control signal that specifies an arbitrary range of the displayed screen, and a control signal that is detected by the control signal detection unit. The first image stored by the storage unit for the image in the range
And an image control unit that performs image processing with the second set value stored in the storage unit on an image outside the range indicated by the control signal.

With this configuration, image processing on an image in an arbitrary range specified by the control signal can be set to an arbitrary state based on the first set value stored in the storage unit. The image processing for an image outside the range specified by the control signal can be set to an arbitrary state based on the second set value stored in the storage unit.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described.
This will be described with reference to FIGS.

In the present embodiment, the present invention is applied to display processing on a display device constituting a display means in a computer device which is an information processing device called a personal computer device.

First, a video signal supplied to the display device of the present embodiment will be described. In the case of the present embodiment, a predetermined control signal is superimposed on a video signal supplied to the display device, and An arbitrary range in the video is designated by the control signal. Here, this control signal is referred to as a marker signal. The marker signal is a signal generated by combining primary color signals of a predetermined level in a predetermined pattern using a predetermined section of one horizontal line, for example. In this example, as the marker signal insertion processing, when an image display window frame for displaying a still image or a moving image is set, the marker signal is inserted into the four corners of the image display window frame.

That is, for example, when the screen 100 displayed on the display unit of the display device is in a state shown in FIG. 2 by a video signal supplied to the display device, a still image or It is assumed that an image display window frame 101 for displaying a moving image is set, and a predetermined still image or moving image is arranged in the image display window frame 101. At this time, the marker signal 102a, 102b, 1 is placed on the horizontal line of the video signal at the four corners in the image display window frame 101.
02c and 102d are arranged.

FIG. 3 shows each of the marker signals 102a, 102
b, 102c, and 102d are shown. Here, the red signal R, the green signal G, and the blue signal B are represented by (a), (b), and (b) of FIG.
As shown in FIG. 3 (d), the signal of the level shown in FIG. 3 (c) is "red, magenta, green, green" in a predetermined section within one horizontal line.
A signal whose color changes in the order of “cyan, yellow, white, yellow, white”. This color change is made to change at a cycle synchronized with a clock used for a video signal generation process, for example. Here, one example is shown as the marker signal, but the marker signals 102a, 102b, 102 at the four corners are shown.
c and 102d may be configured by marker signals of different patterns.

Next, the configuration of the display device in the present embodiment for performing the image receiving process of the video signal into which the marker signal is inserted will be described with reference to FIG. Video signals (red signal R, green signal G, blue signal B) are supplied to the input terminals 1R, 1G, 1B from a video output section (not shown) of the computer apparatus body. This input terminal 1R,
The video signals R, G, B supplied to 1G, 1B are supplied to preamplifier ICs through capacitors 2R, 2G, 2B, respectively.
3 is supplied. The preamplifier IC3 has a built-in circuit for performing image processing for improving image quality, and performs control processing corresponding to an external control signal. Here, as circuits in the preamplifier IC 3, amplifiers 3R, 3G, and 3B for performing a process of changing a video signal level in order to perform contrast adjustment and the like are shown.

The video signal (R / G / B) extracted from the preamplifier IC 3 is further amplified by the output amplifier 4 and then extracted through the capacitors 5R, 5G and 5B. Further, these extracted video signals (R / G
/ B) is supplied to, for example, a cathode ray tube (hereinafter, referred to as a CRT) 7 which is a display means after the DC voltage conversion is performed by the cutoff adjusting amplifier 6, and is provided on a screen of the CRT 7 as described later. Image signal with improved image quality (R / G / B)
Is displayed.

Further, two memories 21A and 21B are provided in the apparatus, in which data is stored and read under the control of a microcomputer 40 which controls various functions, and a first memory 21A is provided in the memory 21A. The value (DC voltage data) of the adjustment state of the image processing applied to the image in the range (outside the range designated by the marker signal: the contrast non-emphasized portion) is stored, and the second range (designated by the marker signal) is stored in the memory 21B. Range (contrast enhancement unit) stores the value (DC voltage data) of the adjustment state of the image processing applied to the image. Here, the value of the adjustment state stored in each of the memories 21A and 21B is used for calculating the adjustment voltage of the contrast ratio stored in the memory 403 connected to the central processing unit (hereinafter referred to as CPU) 402 in the microcomputer 40. From the key input unit 404 or the like to the CPU 4
02 calculated using the adjustment value supplied to the
Under the control of 402, the data is stored in each of the memories 21A and 21B.

As the data for calculating the adjustment voltage for the contrast ratio, the data for calculating the adjustment voltage for the first range, which is the non-contrast-enhanced portion, is set at the time of manufacturing the display device and stored in the memory 403. Data. The data for calculating the adjustment voltage for the second range, which is a contrast enhancement unit, is set at the time of manufacturing the display device with respect to the initial value, and is stored in the memory 403.
, But data input by a user operation from the key input unit 404 or the like (or data transmitted and input from the connected computer apparatus main body side)
Can be updated.

Two memories 2 for storing DC voltage data
For 1A and 21B, the storage area of one memory may be divided into two and used. Further, it may be shared with the memory 403 for storing adjustment voltage calculation data and the like.

The DC voltage data relating to the contrast adjustment read from the memories 21A and 21B is supplied to D / A conversion (hereinafter referred to as DAC) circuits 22A and 22B connected to the memories 21A and 21B. , Respectively, are converted into control DC voltages.

The DAC circuits 22A and 22A
The control DC voltage converted by B is selected by the switch circuit 23 and supplied to the above-described preamplifier IC3. Thus, in the preamplifier IC3, the amplifiers 3R, 3G, and 3B are controlled in accordance with the supplied control DC voltage, and the contrast ratio is adjusted.

In this embodiment, the video signal (R / G /
B) In addition to the above, horizontal and vertical synchronization signals are supplied to the input terminals 11H and 11V from the main body of the computer device, and the horizontal synchronization signal is supplied from the input terminal 11H to the PLL circuit 1.
2 and an oscillation signal from the oscillator 13 is supplied to the PLL circuit 12, and an arbitrary clock signal synchronized with the horizontal synchronizing signal is formed. This clock signal is supplied to a counting terminal of the horizontal counter 14H, and a horizontal synchronizing signal or a signal synchronized with the horizontal synchronizing signal is supplied to a reset terminal. This allows this horizontal counter 1
From 4H, a count value corresponding to a horizontal position on the display screen is taken out.

The horizontal synchronizing signal is supplied to the counting terminal of the vertical counter 14V, and the vertical synchronizing signal from the input terminal 11V or a signal synchronized with the vertical synchronizing signal is supplied to the reset terminal. This allows this vertical counter 1
From 4 V, a count value corresponding to a vertical position on the display screen is taken out. The count values of the horizontal counter 14H and the vertical counter 14V are stored in the latch circuit 1 respectively.
5A, 15B and 16A, 16B.

Further, the video signals from the input terminals 1R and 1G are supplied to the shift registers 9 through the amplifiers 8R and 8G.
R, 9G, and the input terminal 1B.
Is supplied to the clock terminals of the shift registers 9R and 9G through the comparator 8B. The signals stored in the shift registers 9R and 9G are supplied to a comparator 10C and compared with, for example, a signal pattern stored in a memory 10M. Here, the memory 10M stores data of a pattern (for example, a pattern of the level shown in FIG. 3) set in advance as a marker signal, and the marker signal is detected by comparison in the comparator 10C.

The detection signal of the signal pattern detected by the comparator 10C is supplied to the trigger terminals of the latch circuits 15A, 16A and 15B, 16B. As a result, the latch circuits 15A and 15B latch the count value corresponding to the horizontal position of the marker signal pattern 102a or 102c on the display screen, for example. In addition, the latch circuit 15
B includes, for example, the marker signal pattern 102b or 10b.
The count value corresponding to the horizontal position on the 2d display screen is latched.

Further, in the latch circuits 16A and 16B, for example, a count value corresponding to a vertical position on the display screen of the marker signal pattern 102a or 102b is latched. The latch circuit 16B has, for example, a marker signal pattern 1
The count value corresponding to the vertical position on the display screen of 02c or 102d is latched.

Therefore, these latch circuits 15A, 15B
And 16A, 16B are supplied to comparators 17A, 17B and 18A, 18B, respectively, and the above-described horizontal counter 14H and vertical counter 14
The count value of V is calculated by comparators 17A, 17B and 18 respectively.
A, 18B. The output of the latch circuit 15A is supplied to the comparator 17A via a subtractor 24 that shifts the timing forward in the horizontal direction by an amount corresponding to the length of the marker signal. The subtracter 24 controls the subtraction value by the microcomputer 40.

As a result, a signal is extracted from the comparator 17A when the count value of the horizontal counter 14H matches the count value of the horizontal position of the marker signal pattern 102a or 102c latched by the latch circuit 15A. From the comparator 17B, the count value of the horizontal counter 14H is output from the marker signal pattern 1 latched by the latch circuit 15B.
A signal is extracted when the count value matches the horizontal position count value of 02b or 102d.

Further, a signal is extracted from the comparator 18A when the count value of the vertical counter 14V matches the count value of the vertical position of the marker signal pattern 102a or 102b latched by the latch circuit 16A. From the comparator 18B, the count value of the vertical counter 14V is output from the marker signal pattern 102c latched by the latch circuit 16B.
Alternatively, a signal is extracted when the count value matches the vertical position count value of 102d.

When the signals from the comparators 17A and 17A are supplied to the set and reset terminals of the flip-flop 19H, a pulse signal corresponding to the horizontal width of the image display window frame 101 is extracted. Also, by supplying the signals from the comparators 18A and 18A to the set and reset terminals of the flip-flop 19V, a pulse signal corresponding to the vertical width of the image display window frame 101 is extracted.

Further, the signals from the flip-flops 19H and 19V are combined by the multiplier 20 to form a control signal for the section in the image display window frame 101. The control signal is supplied to the switch circuit 23, and the control DC voltage converted by the DAC circuit 22A or 22B is selected, whereby the control from the multiplier 20 is performed in the image displayed on the CRT 7 described above. The contrast ratio of an image in an arbitrary area specified by the signal changes.

The processing for shifting the timing by the amount corresponding to the length of the marker signal by the subtraction in the subtractor 24 includes, for example, the input terminals 11H and 11V described above.
Are supplied to a timer 401 built in the microcomputer 40, and the horizontal and vertical synchronization signal frequencies are measured. Then, the measured synchronization signal frequency is supplied to the CPU 402,
For example, the time length of the signal pattern constituting the marker signal is obtained from the data stored in the memory 403 connected to the CPU 402. The count value of the horizontal clock signal corresponding to the obtained time length is calculated by the CPU 402,
The calculated value is supplied from the microcomputer 40 to the subtractor 24.
And the position of the marker signal stored in the latch circuit 15A can be shifted to the front side in the horizontal direction by the determined time length.

Next, an example of the control state of the contrast ratio in the present embodiment will be described. FIG. 4 is a diagram showing an example of the control state of the contrast ratio in the present embodiment. The vertical axis indicates the amplitude of the video signal, and the horizontal axis indicates the contrast adjustment value. 0
In this example, there are 256 possible settings from to the adjustment value 255. In FIG. 4, the setting range a to b of the amplitude of the video signal indicated by the solid line is the control state in the first range which is the contrast non-emphasized portion. Further, the setting range cd of the amplitude of the video signal indicated by the broken line is a control state in the second range which is the contrast enhancing section.

The control state of the ranges a and b in the first range (contrast non-emphasized portion) is set by an arithmetic process based on data set by adjustment at the time of manufacturing the product. The control state is controlled by a straight line having a slope of, so that the amplitude of the video signal is made relatively small, and the amplitude change range is made relatively large by the value of the adjustment value.

The control states of the ranges c to d in the second range (contrast enhancement section) which is within the range specified by the marker signal are updated by data set by the adjustment at the time of manufacturing the product or by user operation. The control state is set by a calculation process based on the obtained data, and is controlled by a straight line having a predetermined slope (a slope irrelevant to the slope in the first range: a slope that is gentler than that in the first range). As a result, the amplitude of the video signal is made relatively large, and the range of change in the amplitude is reduced by the value of the adjustment value.

The control state c in the second range
The inclination and amplitude position of the straight line between −d and d can be adjusted based on a user operation or the like by the key input unit 404, and an arbitrary adjustment state can be set. In this case, the correspondence between the adjustment value and the amplitude may be set so as not to be a linear correspondence as shown in FIG.

Here, the control of the contrast ratio has been described, but when the control state of the contrast ratio is changed in accordance with the control of the brightness, for example, the state shown in FIG. 5 is set. FIG. 5 is a diagram showing an example of a control state of the contrast ratio according to the brightness control in the present embodiment, in which the vertical axis indicates the amplitude of the video signal, and the horizontal axis indicates the adjustment value of the brightness. In this case, 2 from the adjustment value 0 to the adjustment value 255
This is an example in which 56 steps can be set. In FIG. 5, the control state in the first range (contrast non-emphasized portion) in which the contrast adjustment is in the maximum state max is the setting range ef of the amplitude of the video signal indicated by the solid line, and the contrast adjustment is in the maximum state max. The control state in the second range (contrast enhancement section)
The constant value h is added to the amplitude value in the contrast non-enhanced portion, and the amplitude ranges from (e + h) to (f + h) of the amplitude of the video signal indicated by the broken line. The amplitude setting ranges e to f and (e + h) to (f + h) are as follows.
When the brightness adjustment value is from 0 to x (x is an arbitrary number between 0 and 255), the amplitude value is set to be constant. To change the amplitude value.

Then, the contrast adjustment is in the minimum state mi.
The control state in the first range (contrast non-emphasized portion) in n is constant at the amplitude value g shown by the solid line.
Further, when the contrast adjustment is in the minimum state min, the second
The control state in the range (contrast enhancement section) is a state in which the constant value i is subtracted from the amplitude value in the contrast non-emphasis section in the maximum contrast adjustment state max, and the setting range of the video signal amplitude indicated by the broken line (E-i)
To (fi). This range (ei) to (fi)
Also, the brightness adjustment value is changed from 0 to x (x is 0
Up to an arbitrary number between 255 and 255), the amplitude value is made constant, and between the adjustment value x and 255, the amplitude value changes along a straight line having a predetermined slope.

When the adjustment value of the contrast ratio takes a value between the maximum state max and the minimum state min, the amplitude value of the maximum state and the minimum state shown in FIG. 5 according to the adjustment value at that time. Is controlled to an amplitude value between.

As described above, according to the display device of the present embodiment, the predetermined contrast ratio suitable for the image is automatically set only for the image within the range specified by the marker signal, such as within the image display window frame. Image processing is performed, and image processing with a different contrast ratio is performed on an image outside the range. For example, an image such as a moving image or a still image and a computer processing of characters, numbers, tables, and figures are performed. Thus, even when the images generated by the above process are mixed in one screen, the respective images can be favorably displayed with a favorable contrast ratio.

In particular, in the case of the present embodiment, the image processing state applied to the image within the range specified by the marker signal and the image processing state applied to the image outside the range specified by the marker signal But separate memories 21A and 21B
Is executed based on the control data (DC voltage data) generated and stored in the individual generation processing, so that the image processing in each range is adjusted to an optimum processing state for the image in each range. Can be easily done. For example, within the range specified by the marker signal, a clear image is displayed by a relatively high-amplitude video signal suitable for a moving image, and outside the range, a relatively low-amplitude video suitable for a character display is displayed. Processing for displaying an easy-to-view image by a signal becomes possible.

Further, in the case of the present embodiment, the setting data of the contrast adjustment state can be updated based on the user's operation of the key input section for the part where the contrast is emphasized. An arbitrary adjustment state suitable for an image displayed at that time can be selected by an operation or the like. Further, since the data for generating the contrast adjustment state cannot be updated by the user operation for the non-enhanced part of the contrast, for example, a portion where characters, numbers, figures, etc. are displayed may be incorrect user operation, etc. Therefore, it is possible to effectively prevent an image having a strong contrast from being formed and making it difficult to view the image. However, the non-emphasized part of the contrast is also within a certain range (or without any restrictions).
The data for generating the contrast adjustment state may be updated.

In the example shown in FIG. 2, marker signals are arranged at the four corners of the image display window frame 101. However, if marker signals are arranged at least at two corners of the image display window frame, the range becomes Is possible. In the above-described example, the range for enhancing the contrast is set from the marker signal superimposed on the video signal. The supplied signal may be used.

In the example of FIG. 2, an example in which one image display window frame is set in one screen has been described.
A plurality of image display window frames may be set on the screen, each position may be indicated by a marker signal, and an instruction may be given to apply predetermined image processing to each of the indicated areas. .

In the example described so far, the case where image processing is controlled in a partial range within one screen has been described. However, marker signals are arranged at four or two corners of one screen. The image processing state for one entire screen may be controlled. By doing so, for example, the image displayed by the video signal supplied to the display device is 1
When the entire screen is an image based on image data such as a still image or a moving image, the image can be favorably displayed by giving an instruction to enhance the contrast of the entire screen by a marker signal. If the image displayed by the supplied video signal is switched to a video based on character data, etc., by stopping the marker signal insertion process on the side that generates the video signal, it is suitable for character display, etc. In this case, control can be performed to return to the image processing state and display characters well.

In the above-described embodiment, the control of the contrast ratio of the image displayed on the cathode ray tube or the control of the contrast ratio in conjunction with the brightness control has been described. The present invention can be applied to control of an image display state.

In the embodiment described so far,
Although the display state on the display device connected to the computer device has been described, it is needless to say that the present invention can also be applied to display processing on display means other than the display for the computer device. For example, when image display and character display are mixed in a television receiver, a range in which character display is performed is designated by a marker signal, and image processing suitable for character display is performed within the range. You may do it.

[0051]

According to the display device of the first aspect,
Image processing on an image in an arbitrary range specified by the control signal can be set to an arbitrary state based on the first set value stored in the storage unit, and can be set outside the range specified by the control signal. Can be set to an arbitrary state based on the second set value stored in the storage unit, and the image processing in each range can be individually set to an optimum state. Therefore, for example, when displaying an image in which an image display range of a still image or a moving image and a display range of character information are mixed in one screen, an image processing state suitable for the image display range and a display of character information An image processing state suitable for the range can be set to an optimum state.

According to a second aspect of the present invention, there is provided the display device according to the first aspect, further comprising an input section for inputting data for calculating a set value of the image processing state, wherein the first set value stored in the storage section is stored. Is generated by calculation based on data input to the input unit, and the second set value stored in the storage unit is configured to be generated by arithmetic processing based on preset data. Only the setting state in the image display range such as images and moving images can be updated by the user's input operation, and the adjustment state of other parts where character information etc. is displayed can not be updated by the user's input operation This makes it possible to satisfactorily determine the range of the adjustment state that can be set by a user operation.

According to the display device of the third aspect, in the invention of the first aspect, the set value of the image processing state stored in the storage unit is a value for setting the processing state of the contrast. The contrast of the displayed image can always be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a configuration according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating an example of a display state according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram illustrating an example of a marker signal according to an embodiment of the present invention.

FIG. 4 is an explanatory diagram showing an example of contrast control according to an embodiment of the present invention.

FIG. 5 is an explanatory diagram showing an example of brightness control according to an embodiment of the present invention.

FIG. 6 is an explanatory diagram showing an example of contrast control by the previously proposed device.

FIG. 7 is an explanatory diagram showing an example of brightness control by the previously proposed device.

[Explanation of symbols]

3. Preamplifier unit, 10C comparator, 10M memory for storing marker signals, 21A, 21B memory for storing adjustment values, 22A, 22B digital / analog converter, 23
... Switch, 40 ... Microcomputer, 402 ... Central processing unit (CPU), 403 ... Memory, 404 ...
Key input section

Claims (3)

[Claims] 1. A display device for displaying an image, comprising: a storage unit for individually storing set values of first and second image processing states; and a control signal for specifying an arbitrary range of a screen to be displayed. A control signal detection unit to be detected, and performing image processing based on the first set value stored in the storage unit on an image in a range indicated by the control signal detected by the control signal detection unit; A display device comprising: an image control unit that performs image processing on the outside image using the second set value stored in the storage unit. 2. The display device according to claim 1, further comprising: a data input unit for calculating a set value of an image processing state, wherein the first set value stored in the storage unit is input to the input unit. A display device which is generated by an arithmetic process based on input data, and wherein the second set value stored in the storage unit is generated by an arithmetic process based on preset data. 3. The display device according to claim 1, wherein the set value of the image processing state stored in the storage unit is a value for setting at least a processing state of contrast.