JP2001251641A - Color television receiver and eyeglass for television watching - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a color television receiver that has a function of optimally controlling a luminance and a color temperature in matching with a visual characteristics corresponding to the age a television viewer. SOLUTION: The color television receiver is characterized in provision of means 2, 3 that enter the age or era of the television viewer and of a means 5 that continuously variable-controls a level of a video signal of 3 RGB primary colors within a prescribed wavelength range or that controls the level to be a prescribed level within the prescribed wavelength range in order to compensate a spectral visible sensitivity characteristics due to the entered age or era.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color television receiver capable of reproducing a color image in consideration of a change in the visual function of the elderly and eyeglasses for watching television.

[Summary of the Invention] [0002] The present invention relates to a method for reproducing a color image in consideration of changes in the visual function of the elderly. An elderly person is perceived with a lower screen brightness than a young person due to the aging effect, and the apparent color of the color image is perceived as yellowish. In order to compensate for such an aging effect, the present invention can reproduce a good color image by optimally controlling the brightness and the color temperature of the color television receiver in accordance with the visual characteristics of the elderly. A color television receiver is provided.
Another object of the present invention is to provide television viewing glasses that allow an elderly person to wear a television and watch a color image of a color television so that the user can watch television with a good color reproduction image.

[0003]

2. Description of the Related Art Watching television is now a part of life,
This is especially important for the elderly. Here, FIG.
Indicates a change in spectral luminosity characteristics due to aging. FIG.
The pupil area ratio (%) due to aging is shown as a relative change based on 20 years old. As the age increases, as shown in FIG. 6, the spectral luminous efficiency characteristics of the lens significantly decrease on the short wavelength side.
In addition, as shown in FIG. 7, the pupil is mimicked as the age increases, so that the pupil area ratio decreases as the age increases and the illuminance on the retina decreases. Furthermore, the sensitivity of the photoreceptor cells, particularly the blue cone, is reduced. Due to these deteriorations in the retinal function and the central nervous system, the elderly have lower brightness of the object and lower sensitivity for color discrimination than the young.

[0004] In particular, when a reduction in luminance due to a reduction in pupil diameter and a reduction in sensitivity to discriminate blue-based colors occur, the object is perceived as dark and yellowish. For this reason, an elderly person will perceive the color television image as dark and yellowish as compared to a young person. This decrease in visual function is more remarkable as the age increases. However, since these aging products gradually progress over a long period of time, the elderly themselves are rarely conscious in daily life. for that reason,
For example, elderly people wearing new intraocular lenses after cataract surgery may be amazed that the color beauty and brightness of color television images is significantly improved compared to before surgery.

[0005] In other words, this fact confirms that, due to aging, the elderly do not see color images of current color television receivers with good image quality.

[0006]

However, although the principle of the current color television system skillfully utilizes the visual characteristics of human beings, the principle is based on the visual characteristics of young people. It is not designed to take into account the deterioration of visual function of the elderly. Therefore, in color television receivers under the current system, there is a need for a technology for improving the image quality of television images that compensates for the deterioration of visual functions due to the aging effect of the elderly. It is a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a color television receiver having a function of optimally controlling brightness and color temperature in conformity with a visual characteristic due to an aging effect of a television viewer.

Another object of the present invention is to allow a television viewer to wear a television image and watch a color image of a color television so that the aging effect is corrected, and the television can be viewed with an image having good color reproduction. To provide television viewing glasses.

[0009]

In order to achieve the above object, a color television receiver according to the present invention comprises a means for inputting the age or age of a television viewer, and an additional means in accordance with the input age or age. The color temperature value is controlled by continuously varying the level of the video signal of the three primary colors RGB within a predetermined wavelength range or by controlling the level of the video signal to a constant value within a predetermined wavelength range so as to compensate for a decrease in spectral visibility characteristics due to an age effect. Variable means.

[0010] The color television receiver of the present invention further comprises means for inputting the age or age of a television viewer;
Means for controlling the brightness level of the television screen to a predetermined value or variably controlling the luminance level of the television screen to compensate for the decrease in the brightness of the television screen due to the aging effect according to the input age or age. .

[0011] Further, the color television receiver of the present invention has a means for inputting the age or age of a television viewer, and compensates for spectral luminous efficiency characteristics due to an aging effect according to the input age or age. Means for continuously variably controlling the level of the video signal of the three primary colors RGB within a predetermined wavelength range, or controlling the level of the video signal to a constant value within a predetermined wavelength range;
Means for controlling the brightness level of the television screen to a predetermined value or variably controlling the luminance level of the television screen to compensate for the decrease in the brightness of the television screen due to the aging effect according to the input age or age. .

Further, in the color television receiver according to the present invention, the means for controlling the levels of the RGB three primary color video signals may be obtained by calculating the level to be controlled from the spectral luminous efficiency characteristics, or correction data for each age may be obtained in advance. It is characterized in that a level to be controlled is obtained by referring to a set table.

Further, in the color television receiver according to the present invention, the means for controlling the luminance level of the television screen is at least one of a luminance adjustment circuit provided on the main body of the receiver and a luminance adjustment circuit provided on the display side. It is characterized in that one is controlled.

Further, in the color television receiver according to the present invention, the means for controlling the luminance level of the television screen determines the level to be controlled by calculation from the aging effect characteristic of the pupil diameter, or in advance for each age. It is characterized in that a control level is obtained by referring to a table in which correction data is set.

Further, the television viewing glasses of the present invention are characterized in that a color temperature conversion filter or a color temperature conversion device having an inverse characteristic for compensating for spectral luminous efficiency characteristics due to an aging effect is mounted.

According to this configuration, the color temperature of the color television image is corrected by electronic means in accordance with each age of the television viewer and presented on the screen in consideration of the change in the spectral spectral sensitivity of vision due to aging. Can be. Therefore, it is possible to realize color reproduction of a color television image that is optimal for television viewers of each age group including the elderly.

Further, since the screen brightness of a television image can be compensated and controlled by electronic means according to each age of the television viewer, the illuminance on the retina decreases due to the pupil constriction due to the aging effect. It becomes possible to correct that the brightness of the screen is dark.

Furthermore, since both of these compensating means can be incorporated into a color television receiver, it is possible to reproduce and provide good color images to television viewers of a wide range of ages, including the elderly.

Further, the television viewer can use viewing glasses equipped with a color temperature conversion filter or a color temperature conversion device having an inverse characteristic to compensate for the spectral luminous efficiency characteristic due to the aging effect. A good color image can be appreciated.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A color television receiver according to an embodiment of the present invention will be described below with reference to FIGS. First, the premise of the present invention will be described with reference to FIGS. FIG. 2 shows a relative change in the spectral luminosity characteristics with aging. FIG. 3 and FIG. 4 show experimental results of preferable color temperatures. FIG. 5 shows the analysis result of the main component at a preferable color temperature.

In FIG. 2, the spectral luminosity characteristics due to aging are shown as 2
The relative change with respect to the age of 5 years is shown normalized at the wavelength of 550 nm. As shown in FIG.
As the age becomes 35, 45, 55, 65, or 75, the visibility on the relatively short wavelength side (blue) decreases,
It can be seen that the visibility on the long wavelength side increases.

Next, the color temperature of the color television image is set to 650.
0K, 9900K, 12000K, 14000K, 16
An example is shown in which the preferred color temperature of a color television image is experimentally determined by changing the temperature in six stages of 000K and 20,000K.

In the experiment, a paired comparison method with a seven-step category from very good (+3) to very bad (-3) was used. Standard test charts (five types) of the Institute of Image Information and Television Engineers were used for the evaluation images. The image is displayed on a 20-inch color monitor (vertical 30
m, 40 cm wide) in a dark room. The screen luminance is 235 (cd / m ² ) at the white peak and the viewing distance is 6H (H: screen height).

The subjects were 22 to 28 years old (average 2)
4 years old) 10 people, elderly group 65-75 years old (average 68 years old) 1
0 subjects were targeted. These test subjects are normal color vision persons having visual acuity of 1.0 or more (including correction).

FIG. 3 shows the experimental results for a female face image (up shot) among the five types of images. FIG. 4 shows the results of an experiment performed on a general landscape image. From FIG. 3, it has been found that there is an optimum value for the color temperature of the color television image at which a preferable skin color reproduction is obtained. Specifically, in the case of a face image, the color temperature of the young group is about 9
It turned out that the color temperature of the elderly group has the most preferable color temperature value in the vicinity of 15000-16000K, while the optimal value is around 300K.

On the other hand, from FIG. 4, in the case of a general landscape image, a high color temperature is preferred for both the elderly and the young, and a saturation tendency is observed. The reason why the optimum value was found for the color temperature in the case of the face image is considered to be related to the memory color in which the face image (skin color) is important for the color reproduction of the color television image.

Next, FIG. 5 shows the results of principal component analysis of the visual psychological effect under the preferred color temperature condition for the elderly using the SD method. In FIG. 5, psychological factors represented by adjectives such as “freshness” and “youthful” are extracted as the first principal component that occupies a large contribution rate, and are related to the improvement of the preference of a color image. ing.

As described above, in the present embodiment, the color temperature of the color television image is set to be equal to the television temperature in order to reproduce the optimal color image for the television viewer in consideration of the relative change of the spectral luminosity characteristic due to aging. The video signal levels of the three primary colors of the color television receiver are corrected so that the characteristics shown in FIG. 2 are compensated according to the age of the viewer.

In addition, since the brightness of the television screen is perceived to be dark due to the decrease in retinal illuminance due to the pupil due to aging, the screen luminance of the color television image can be corrected and controlled according to the age of the television viewer. Like that.

Furthermore, a television viewer wears spectacles equipped with a color temperature conversion filter or a color temperature conversion device having an inverse characteristic for compensating for the spectral luminous efficiency characteristics due to the aging effect, so that a good color for the television viewer can be obtained. To reproduce the image.

FIG. 1 is a block diagram showing the configuration of an embodiment of a color television receiver according to the present invention. Hereinafter, the color television receiver according to the present embodiment will be specifically described with reference to FIG.

In FIG. 1, a color television receiver according to the present embodiment is a color signal demodulator 1 for demodulating an RGB color primary video signal from an input color television signal.
As a means for inputting the numerical value of the age or age of the television viewer, the age or age of the television viewer is fetched from a signal transmitted by infrared rays or radio waves from the so-called television remote controller 2 and a control signal is output. Remote control signal detection circuit 3, a television display 4 for displaying a color image, and a video signal demodulated by the color signal demodulator 1 based on a control signal output from the remote control signal detection circuit 3 according to the present embodiment. And a luminance and chrominance signal level control unit 5 for outputting video signals of RGB three primary colors at a predetermined level to the television display 4.

Next, the operation of the color television receiver of this embodiment will be described. In FIG. 1, when a numerical value of age or a numerical value of age is input from the remote controller 2 for television, this information is detected by the remote control signal detection circuit 3, and a control signal is output to the luminance and color signal level control unit 5.

The luminance and chrominance signal level control unit 5 controls the level of the RGB primary color video signal to be supplied to the television display 4 so as to compensate for the characteristics shown in FIG. It operates so that television images can be reproduced under the conditions.

More specifically, for example, among the three primary color signals of Red, Green, and Blue supplied to the color television display 4, while keeping the level of the Green signal constant, the levels of the Red signal and the Blue signal are mutually changed. Interlocking control is performed so as to change in the opposite direction. That is, to set the color temperature high, control is performed such that the level of the Green signal is kept constant, the level of the Blue signal is increased, and the level of the Red signal is decreased. Conversely, to set the color temperature low, control is performed such that the level of the Blue signal is reduced and the level of the Red signal is increased while the level of the Green signal is kept constant. Such color temperature control may be continuously varied, or may be set to only a specific color temperature value.

In consideration of the fact that there are individual differences among television viewers even in the case of the same age, instead of inputting the numerical value of the age as it is, a large age such as 50s, 60s, 70s and 80s is used. Control may be performed by inputting a numerical value shown as follows. This can be realized by creating a table by changing the age-based correction data by age by interpolation or the like.

The control of the color temperature may be controlled by a controller provided on the television display 4 side instead of the television remote control 2. Further, a control circuit for controlling the luminance and the color temperature includes an RG built in the television display 4.
It can also be performed by the control section for the B primary color signal.

Next, the luminance and color signal level control unit 5
Corrects the feeling that the brightness of the television screen is dark based on the data indicating the decrease in retinal illuminance associated with the miosis caused by aging shown in FIG. That is, similarly to the case of the color temperature control, by inputting from the television remote control 2 or the like in accordance with the age or age of the television viewer, the luminance and color signal level control unit 5 can control the luminance adjustment circuit in the television receiver or the television. The screen brightness can be corrected by controlling the brightness adjustment circuit inside the display 4.

The correction data used in the brightness control is shown in FIG.
Are obtained by calculation based on the relationship data between the pupil area ratio and the age shown in FIG. In this luminance control, a constant luminance level determined according to age or age or a level range determined according to age or age is varied.

The luminance and color signal level control section 5
The above-mentioned color temperature and brightness compensation control are each independently,
Alternatively, both controls can be performed in combination.
This makes it possible to provide a television viewer with a good color television image that compensates for a decrease in visual function due to the aging effect.

In the above example, the case where the luminance and chrominance signal level control unit 5 obtains by calculation from the spectral luminous efficiency characteristic (FIG. 2) and the pupil diameter change characteristic (FIG. 7) has been described. I do.

That is, the luminance and color signal level control unit 5 prepares a table of correction data for color temperature control for each age in advance, and responds to input information on age and age from the television remote controller 2 or the like. Then, the level of the video signal is variably controlled with reference to the correction data. The correction data in this case realizes the reverse characteristic of the characteristic shown in FIG. FIG. 2 shows the relative transmittance for each wavelength based on the age of 25. Therefore, the table shows that the wavelength 5n
The deviation from the reference value at the age of 25 obtained for each m is set for each age. Similarly, in the brightness level correction control, correction data for realizing the inverse characteristic of the characteristic shown in FIG. 7 can be prepared in a table in advance and controlled.

In the above example, the color temperature and the luminance are controlled by electronic means. However, the color temperature and the luminance are controlled without using the electronic means, that is, without changing the color television receiver. Control can be performed in the same manner.

That is, as a method of compensating for the change in spectral visibility due to aging and achieving good color reproduction of a color television image, a method using viewing glasses 6 as shown in FIG. Can be The viewing glasses 6 are equipped with a color temperature conversion filter 7 (or a color temperature conversion device) having an inverse characteristic such as to compensate for the spectral luminous efficiency characteristic due to the aging effect shown in FIG.

When the television viewer uses the viewing glasses 6 to view the color television image, it is possible to realize good color reproduction for the viewer. As the color temperature conversion filter 7 to be mounted, a color temperature conversion filter technology for a photograph or a television camera can be used. The viewing glasses 6 may be, for example, one in which the lens itself is a filter, one in which a filter is attached to the lens, or the like. In addition, liquid crystal glasses having color temperature conversion characteristics of inverse characteristics such as compensating for spectral luminosity characteristics due to an aging effect may be used.

According to the method using the viewing glasses 6,
Since the viewer can easily view the compensated image of the color TV by wearing the viewing glasses 6 provided with the color temperature correction filter 7, the image of the color TV can be simultaneously displayed by a plurality of people such as the elderly and the young. It is effective when watching.

[0047]

As described above, according to the present invention,
The color temperature of a color television image can be corrected by electronic means according to each age of the television viewer, and the screen can be presented in view of changes in the spectral spectral sensitivity of vision due to aging. It is possible to realize color reproduction of a color television that is optimal for the viewer.

In addition, since the screen brightness of the television image can be compensated and controlled by electronic means according to each age of the television viewer, the illuminance on the retina decreases due to the shrinking of the pupil due to the aging effect. It becomes possible to correct that the brightness of the screen is felt dark.

Further, by incorporating both of these compensating means into a color television receiver, it becomes possible to provide good color image reproduction to television viewers of a wide range of age including the elderly.

Further, according to the present invention, a television viewer can use viewing glasses equipped with a color temperature conversion filter having an inverse characteristic so as to compensate for spectral luminous efficiency characteristics due to an aging effect. A good color image can be appreciated.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram showing an embodiment of a color television receiver according to the present invention.

FIG. 2 is a diagram showing a relative change in spectral visibility with aging.

FIG. 3 is a diagram showing an experimental result of a preferable color temperature of a color television image (face image).

FIG. 4 is a diagram showing an experimental result of a preferable color temperature of a color television image (general landscape image).

FIG. 5 is a diagram showing an analysis result of a main component at a preferable color temperature of a color television image.

FIG. 6 is a diagram showing a change in spectral luminosity characteristics due to aging.

FIG. 7 is a diagram showing a change in a pupil area ratio due to aging.

[Description of Signs] 1 Color signal demodulator 2 Remote control for TV 3 Remote control signal detection circuit 4 Display for TV 5 Luminance and color signal level control unit 6 Glasses for viewing 7 Color temperature conversion filter

[Procedure amendment]

[Submission Date] March 14, 2000 (200.3.1)
4)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004] In particular, when a reduction in luminance due to a reduction in pupil diameter and a reduction in sensitivity to discriminate blue-based colors occur, the object is perceived as dark and yellowish. For this reason, an elderly person will perceive the color television image as dark and yellowish as compared to a young person. This decrease in visual function is more remarkable as the age increases. However, since these aging effects gradually progress over a long period of time, the elderly themselves are less conscious in their daily lives. for that reason,
For example, elderly people wearing new intraocular lenses after cataract surgery may be amazed that the color beauty and brightness of color television images is significantly improved compared to before surgery.

Claims (7)

[Claims] 1. A means for inputting the age or age of a television viewer, and the level of a video signal of three primary colors of RGB is compensated for in accordance with the input age or age so as to compensate for a decrease in spectral luminous efficiency characteristics due to an aging effect. Means for varying the color temperature value by continuously performing variable control within a predetermined wavelength range or controlling to a constant value within the predetermined wavelength range. 2. A means for inputting the age or age of a television viewer, and a predetermined brightness level of the television screen so as to compensate for a decrease in brightness of the television screen due to an aging effect according to the input age or age. Means for controlling or variably controlling a value, a color television receiver comprising: 3. A means for inputting the age or age of a television viewer, and adjusting a level of a video signal of three primary colors of RGB to a predetermined wavelength so as to compensate for spectral luminous efficiency characteristics due to an aging effect according to the input age or age. Means for continuously variable control within the range, or control to a constant value within a predetermined wavelength range, and a television screen so as to compensate for a decrease in the brightness of the television screen due to an aging effect according to the input age or age. A means for controlling or variably controlling the luminance level of the color television set to a predetermined value. 4. The color television receiver according to claim 1, wherein the means for controlling the level of the video signal of the three primary colors of RGB is obtained by calculating the level to be controlled from spectral luminous characteristics. Or obtaining a level to be controlled with reference to a table in which correction data is set for each age in advance. 5. The color television receiver according to claim 2, wherein the means for controlling the brightness level of the television screen is provided on a brightness adjustment circuit provided on the receiver body side and on a display side. Controlling at least one of the brightness adjustment circuits. 6. The color television receiver according to claim 5, wherein the means for controlling the luminance level of the television screen obtains the level to be controlled by calculation from the aging effect characteristic of the pupil diameter, or determines the level in advance. Obtaining a control level by referring to a table in which correction data is set for each color television receiver. 7. Television viewing glasses, comprising a color temperature conversion filter or a color temperature conversion device having an inverse characteristic for compensating for spectral luminous efficiency characteristics due to an aging effect.