JP5071022B2 - Digital broadcast receiver - Google Patents

Description

  The present invention relates to a digital broadcast receiver.

  In recent years, television broadcast receivers can receive data broadcast information and display characters and images based on the data broadcast information in addition to program broadcast information including program main information and commercial information.

In the case of digital broadcasting, characters drawn in data broadcasting are a character color that is the color of the character itself, a background color that is the color of the background of the character, and an intermediate color (first color displayed in an area bordering the character color area). (Intermediate color and second intermediate color). These colors are designated by the broadcasting station from among 128 kinds of colors defined by ARIB (Association of Radio Industries and Businesses).
Therefore, if there is no color suitable for the intermediate color among these 128 types of colors, or if the broadcast station does not specify a color suitable for the intermediate color, if the character size becomes small, the intermediate color becomes too strange and the character There is a problem that it becomes difficult to see.

2. Description of the Related Art Conventionally, there has been proposed an apparatus capable of presenting a user with a clean and easy-to-read character.
For example, a printing system and an image processing apparatus (for example, see Patent Documents 1 and 2) that can print characters with less jaggy, a data broadcast receiving apparatus (for example, see Patent Document 3) that can display characters with less jaggies, and an accurate color A data display device that can display anti-aliased characters (for example, see Patent Document 4) has been proposed.
JP 2003-54042 A JP 2001-296644 A JP 2002-142199 A JP 2007-121735 A

  However, although the devices of Patent Documents 1 to 4 can present a user with less jaggy characters or characters that have been anti-aliased with an accurate color, that is, although the contour of the characters can be corrected, Since it is not a device related to the technology for drawing with the character color, intermediate color and background color, if the intermediate color is odd, the character becomes difficult to see if the size of the character drawn in the data broadcast is reduced. It cannot be solved.

  An object of the present invention is to provide a digital broadcast receiver that can display characters drawn in data broadcasting in an easy-to-see and clean state.

In order to solve the above-mentioned problem, the invention described in claim 1
In a digital broadcast receiver that receives data broadcast information and displays characters based on the data broadcast information on the display unit,
The data broadcast information includes a character color that is a color of the character itself, a background color that is a background color of the character, a character color region that is colored with the character color, and a background color region that is colored with the background color. Color information regarding the intermediate color displayed in the area bordering the character color area between and
Obtaining means for obtaining the size of the character based on the data broadcast information;
Determining means for determining whether the size of the character acquired by the acquiring means is equal to or less than a predetermined threshold;
When the determination means determines that the size of the character is equal to or smaller than a predetermined threshold, the width of the character color region is widened while keeping the sum of the width of the character color region and the width of the intermediate color region as it is. by the setting means the ratio of the width of the intermediate color area to the width of the character color region is set to be smaller than a predetermined ratio,
Display control means for displaying the character on the display unit by coloring the character color area and the intermediate color area at a ratio set by the setting means;
It is characterized by providing.

The invention described in claim 2
The digital broadcast receiver according to claim 1, wherein
The setting means is characterized in that the ratio is set to decrease as the size of the character acquired by the acquiring means decreases.

The invention according to claim 3
The digital broadcast receiver according to claim 1 or 2,
The setting means sets the ratio to be larger than the preset ratio when the determination means determines that the size of the character is not less than a predetermined threshold.

The invention according to claim 4
The digital broadcast receiver according to claim 3,
The setting unit is configured to set the ratio so that the size of the character acquired by the acquisition unit increases.

According to the present invention, in a digital broadcast receiver that receives data broadcast information and displays characters based on the data broadcast information on a display unit, the data broadcast information includes a character color that is the color of the character itself, A color relating to a background color that is a background color, and an intermediate color displayed in a region bordering the character region between the character color region colored with the character color and the background color region colored with the background color Including information, an acquisition unit that acquires a character size based on data broadcast information, a determination unit that determines whether the size of the character acquired by the acquisition unit is equal to or less than a predetermined threshold, and a character by the determination unit If the size of is determined to be below a predetermined threshold value, by the sum of the widths of the intermediate color area of the character color region to increase the width of character color area as is, neutral to the width of the character color region Characters are displayed on the display unit by coloring the character color area and the intermediate color area at a ratio set by the setting means for setting the ratio of the width of the area to be smaller than a preset ratio. Display control means.
That is, when the character size is small, the intermediate color area can be narrowed, so that even if there is no color suitable for the intermediate color or when a color suitable for the intermediate color is not designated, the intermediate color can be made inconspicuous. As a result, the characters depicted in the data broadcast can be easily viewed and displayed in a clean state.

  Hereinafter, the best mode of a digital broadcast receiver according to the present invention will be described in detail with reference to the drawings. The scope of the invention is not limited to the illustrated example.

<Configuration of digital broadcast receiver>
The digital broadcast receiver 1 receives program broadcast information including main program information and commercial information from a digital television broadcast wave, and displays video based on the program broadcast information or audio based on the program broadcast information. Or the like, and also receives data broadcast information and displays characters and images based on the data broadcast information.

  Specifically, for example, as shown in FIG. 1, the digital broadcast receiver 1 includes a tuner 11, a demodulator 12, a separator 13, an audio decoder 14, an audio output unit 15, and a video decoder 16. The data broadcast screen generation unit 17, the video composition unit 18, the display unit 19, the operation unit 20, the control unit 21, and the like are configured.

  The tuner 11 selects and receives a specific television broadcast signal (program broadcast information or data broadcast information) from, for example, a television broadcast wave received by the antenna 11a in accordance with a control signal input from the control unit 21. Then, the received television broadcast signal is subjected to predetermined processing and output to the demodulator 12.

  For example, the demodulation unit 12 performs a predetermined process such as digital demodulation and error correction on the television broadcast signal input from the tuner 11 according to the control signal input from the control unit 21 to generate a transport stream, Output to the separation unit 13.

  For example, according to a control signal input from the control unit 21, the separation unit 13 performs an audio stream, a video stream, a data broadcast stream, a PSI (Program Specific Information: program) from the transport stream input from the demodulation unit 12. Specific information) / SI (Service Information: program sequence information) signal and the like. Then, the separation unit 13 outputs the audio stream to the audio decoder 14, outputs the video stream to the video decoder 16, and outputs the data broadcast stream and the PSI / SI signal to the control unit 21.

  For example, the audio decoder 14 performs predetermined processing such as decoding on the audio stream input from the separation unit 13 in accordance with a control signal input from the control unit 21, generates audio data, and outputs the audio data to the audio output unit 18. .

  The audio output unit 15 is, for example, a speaker device and outputs audio based on the audio data input from the audio decoder 14.

  For example, according to the control signal input from the control unit 21, the video decoder 16 performs predetermined processing such as decoding on the video stream input from the separation unit 13 to generate video data, and outputs the video data to the video synthesis unit 18. .

  For example, the data broadcast screen generation unit 17 generates data broadcast screen information based on the data broadcast stream input from the separation unit 13 to the control unit 21 in accordance with a control signal input from the control unit 21, and generates a video synthesis unit. 18 is output.

  For example, the video composition unit 18 synthesizes the video data input from the video decoder 16 and the data broadcast screen information input from the data broadcast screen generation unit 17 in accordance with a control signal input from the control unit 21. Composite data is generated and output to the display unit 19.

The display unit 19 is, for example, a liquid crystal display device, and displays a screen based on the composite data input from the video composition unit 18.
Specifically, for example, a screen based on the composite data as shown in FIG. 2 is displayed on the display unit 19. The screen based on the composite data includes video data input from the video decoder 16, that is, a program broadcast screen G1 based on program broadcast information composed of main program information and commercial information, and a data broadcast screen G2 based on the data broadcast screen information. And the like.

  The operation unit 20 includes, for example, operation buttons provided on the outer surface of the digital broadcast receiver 1, a remote controller for the digital broadcast receiver 1, and a remote control receiver that can communicate with the remote controller. When operated by the user, various signals accompanying the operation are output to the control unit 21.

  For example, as shown in FIG. 1, the control unit 21 includes a CPU (Central Processing Unit) 211, a RAM (Random Access Memory) 212, a storage unit 213, and the like.

  The CPU 211 performs various control operations according to various processing programs for the digital broadcast receiver 1 stored in the storage unit 213, for example.

  The RAM 212 includes, for example, a program storage area for developing a processing program executed by the CPU 211, a data storage area for storing input data, a processing result generated when the processing program is executed, and the like.

  The storage unit 213 is, for example, a system program that can be executed by the digital broadcast receiver 1, various processing programs that can be executed by the system program, data that is used when these various processing programs are executed, and arithmetic processing performed by the CPU 211. The processing result data and the like are stored. The program is stored in the storage unit 213 in the form of computer readable program code.

  Specifically, as shown in FIG. 1, for example, the storage unit 213 stores a data broadcast information storage file 213a, an acquisition program 213b, a determination program 213c, a setting program 213d, a display control program 213e, and the like. I remember it.

The data broadcast information storage file 213a stores necessary data broadcast information in the data broadcast stream and the PSI / SI signal input from the separation unit 13, for example.
Specifically, the CPU 211 acquires necessary data broadcast information from the input data broadcast stream or PSI / SI signal, and stores it in the data broadcast information storage file 213a. Examples of the data broadcast information stored in the data broadcast information storage file 213a include character information related to characters based on the data broadcast information, image information related to images based on the data broadcast information, and the like.

  The character information includes, for example, font data indicating the shape of the character displayed on the display unit 19 by the presence or absence of dots, region information regarding the position and size of the display region when the character is displayed on the display unit 19, and Size information about the size of characters displayed on the display unit 19, color information about the color of characters displayed on the display unit 19, and font types of characters displayed on the display unit 19 (Gothic, Mincho, etc.) ) Font type information and so on.

  Here, the color information includes, for example, the character color that is the color of the character itself, the background color that is the background color of the character, the character color region R1 that is colored with the character color, and the background color region that is colored with the background color. This is information relating to the intermediate color displayed in the region (intermediate color region R2) that borders the character color region R1 with R3. The intermediate colors include, for example, the first intermediate color displayed in the character color region R1 side region (first intermediate color region R21) and the first intermediate color displayed in the background color region R2 side (second intermediate color region R22). 2 intermediate colors. The character color, intermediate color (first intermediate color and second intermediate color), and background color are colors arbitrarily designated by the broadcasting station from among 128 types of colors determined by ARIB, for example. Examples of the character color, intermediate color, and background color include, for example, yellow as the character color, light gray as the first intermediate color, dark gray as the second intermediate color, and transparent dark gray as the background color. Here, transparent dark gray is given as an example of the background color. For example, only a color (dark gray) is specified from 128 types of colors defined by ARIB, and a predetermined transmittance ( By setting 0% <transmittance <100%), a transparent dark gray color can be designated as the background color.

For example, FIG. 3 is a diagram illustrating a state in which “-” among characters based on the data broadcast information is displayed on the display unit 19. The character “-” includes a character color region R1, an intermediate color region R2 (first intermediate color region R21 and second intermediate color region R22), and a background color region R3.
For example, the ratio of the width of the first intermediate color area R21 to the width W1 of the character color area R1 and the ratio of the width of the second intermediate color area R22 to the width W1 of the character color area R1 are set in advance, for example. That is, the ratio of the width W2 of the intermediate color area R2 to the width W1 of the character color area R1 (intermediate color ratio) is set uniformly in advance.

For example, the acquisition program 213b causes the CPU 211 to realize a function of acquiring the character size based on the data broadcast information.
Specifically, for example, the CPU 211 obtains the character size based on the data broadcast information based on the size information of the character information stored in the data broadcast information storage file 213a.
The CPU 211 functions as an acquisition unit by executing the acquisition program 213b.

For example, the determination program 213c causes the CPU 211 to realize a function of determining whether or not the character size acquired by the CPU 211 executing the acquisition program 213b is equal to or smaller than a predetermined threshold.
The CPU 211 functions as a determination unit by executing the determination program 213c.

For example, when the CPU 211 that has executed the determination program 213c determines that the character size is not equal to or less than a predetermined threshold, the setting program 213d determines the ratio of the width W2 of the intermediate color region R2 to the width W1 of the character color region R1 (hereinafter, When “intermediate color ratio” is set to a preset intermediate color ratio (hereinafter referred to as “standard ratio”), and the CPU 211 executing the determination program 213c determines that the character size is equal to or smaller than a predetermined threshold value. Further, the CPU 211 is caused to realize a function of setting the intermediate color ratio to be smaller than the standard ratio.
Specifically, when the character size based on the data broadcast information is smaller than a predetermined threshold, the intermediate color ratio is set to be smaller than the standard ratio, for example, “d” shown in FIG. The width W2 of the intermediate color region R2 (for example, the lower diagram in FIG. 4) is narrower than the preset width W2 of the intermediate color region R2 (for example, the upper diagram in FIG. 4).
The intermediate color ratio is made smaller than the standard ratio by reducing the width W2 of the intermediate color area R2 while maintaining the width W1 of the character color area R1, but the width W1 of the character color area R1 and the intermediate color area R2 are reduced. The ratio of the intermediate colors may be made smaller than the standard ratio by increasing the width W1 of the character color region R1 while keeping the sum of the width W2 and the width W2.

Here, when the CPU 211 determines that the character size is equal to or smaller than a predetermined threshold, for example, the CPU 211 sets the intermediate color ratio to be smaller as the character size is smaller.
Specifically, for example, when the predetermined threshold is 36 dots and the standard ratio is 30%, for example, the CPU 211 determines that the character size is within the range of the first size (for example, 24 dots <character If size ≦ 36 dots), the intermediate color ratio is set to the first ratio (for example, 25%), and the character size is within the range of the second size (for example, 12 dots <character size ≦ 24 dots). If the intermediate color ratio is set to be the second ratio (for example, 20%), and the character size is within the third size range (for example, 0 dot <character size ≦ 12 dots), the intermediate color The ratio is the third ratio (for example, 15%).
Of course, the predetermined threshold value, the standard ratio, the first to third size ranges, and the first to third ratios are not limited to the values described above, but are arbitrary. In addition, the character size is divided into three stages of the first size to the third size, but is not limited to three stages, the character size may not be divided, or may be divided into two stages. It may be divided into four or more stages.
The CPU 211 functions as a setting unit by executing the setting program 213d.

For example, the display control program 213e includes, on the display unit 19, a program broadcast screen G1 based on program broadcast information composed of main program information and commercial information, and a data broadcast screen G2 composed of characters and screens based on the data broadcast information. The CPU 211 is caused to realize a function of displaying the screen.
Specifically, for example, the CPU 211 reads the data broadcast information stored in the data broadcast information storage file 213a and outputs the data broadcast information to the data broadcast screen generation unit 17. Next, the CPU 211 inputs a control signal to the data broadcast screen generation unit 17, generates data broadcast screen information based on the data broadcast information, and outputs it to the video composition unit 18. Next, the CPU 211 inputs a control signal to the video synthesizing unit 18, synthesizes the video data input from the video decoder 16 and the data broadcast screen information, generates synthesized data, and causes the display unit 19 to generate synthesized data. Output.

Here, when the CPU 211 causes the data broadcast screen generation unit 17 to generate the data broadcast screen information, the character color region R1 and the intermediate color region R2 are colored at the intermediate color ratio set by the CPU 211 that has executed the setting program 213d. By controlling the characters to be drawn, the display unit 19 displays the characters in which the character color region R1 and the intermediate color region R2 are colored at the set intermediate color ratio.
That is, the CPU 211 outputs the font data stored in the data broadcast information storage file 213a to the data broadcast screen generation unit 17, and inputs a control signal to the data broadcast screen generation unit 17 so that the standard ratio is the intermediate color ratio. If set, the character color area R1 and the intermediate color area R2 are drawn based on the font data at a standard ratio, and if the intermediate color ratio other than the standard ratio is set, the font data Based on the above, a character in which the character color region R1 and the intermediate color region R2 are colored with the set intermediate color ratio is drawn.
The CPU 211 functions as a display control unit by setting the display control program 213e.

<Character drawing process>
Processing related to the drawing of characters based on data broadcast information by the digital broadcast receiver 1 will be described with reference to the flowchart of FIG.

  First, when the CPU 211 stores the data broadcast information in the data broadcast information storage file 213a, the CPU 211 executes the acquisition program 213b, and based on the size information in the character information of the stored data broadcast information, the data broadcast information The size of the character based on is acquired (step S11).

  Next, the CPU 211 executes the determination program 213c to determine whether or not the acquired character size is equal to or smaller than a predetermined threshold (step S12).

  If it is determined in step S12 that the size of the acquired character is not equal to or smaller than the predetermined threshold (step S12; No), the CPU 211 executes the setting program 213d and sets the standard ratio as the intermediate color ratio (step S13). ), The process proceeds to step S19.

  On the other hand, if it is determined in step S12 that the size of the acquired character is equal to or smaller than a predetermined threshold (step S12; Yes), the CPU 211 executes the setting program 213d so that the size of the acquired character is Then, it is determined whether or not it is within the range of the first size (threshold value ≧ first size) (step S14).

  If it is determined in step S14 that the acquired character size is within the first size range (step S14; Yes), the CPU 211 sets the first ratio (standard ratio> first ratio) as the intermediate color ratio. (Step S14), the process proceeds to Step S19.

  On the other hand, when determining in step S14 that the size of the acquired character is not within the range of the first size (step S14; No), the CPU 211 determines that the size of the acquired character is the second size (first It is determined whether or not the size is within the range of size> second size (step S16).

  If it is determined in step S16 that the acquired character size is within the range of the second size (step S16; Yes), the CPU 211 sets the second ratio (first ratio> second ratio) as the intermediate color ratio. After setting (step S17), the process proceeds to step S19.

  On the other hand, if it is determined in step S16 that the size of the acquired character is not within the range of the second size (step S16; No), that is, the size of the acquired character is the third size (second size). If it is determined that it is within the range of> (third size), the CPU 211 sets the third ratio (second ratio> third ratio) as the intermediate color ratio (step S18).

Next, the CPU 211 acquires font data from the data broadcast information storage file 213a (step S19), outputs the font data to the data broadcast screen generation unit 17, inputs a control signal to the data broadcast screen generation unit 17, and sets the data. Then, a character in which the character color region R1 and the intermediate color region R2 are colored with the intermediate color ratio is drawn (step S20), and this process ends.
As a result, characters based on the data broadcast information in which the character color region R1 and the intermediate color region R2 are colored at the set intermediate color ratio are displayed on the display unit 19.

According to the digital broadcast receiver 1 in the first embodiment described above, the CPU 211 that executes the acquisition program 213b that acquires the character size based on the data broadcast information, and the acquired character size is a predetermined size. The CPU 211 that has executed the determination program 213c for determining whether or not it is equal to or smaller than the threshold value, and when the character size is determined to be equal to or smaller than the predetermined threshold value, the width W2 of the intermediate color region R2 with respect to the width W1 of the character color region R1 The CPU 211 that executes the setting program 213d for setting the ratio (intermediate color ratio) to be smaller than a preset standard ratio, and coloring the character color area R1 and the intermediate color area R2 with the set intermediate color ratio And a display control program 213e for displaying characters on the display unit 19.
That is, when the character size is small, the intermediate color region R2 can be narrowed, so that even if there is no color suitable for the intermediate color or when a color suitable for the intermediate color is not designated, the intermediate color is made inconspicuous. As a result, it is possible to display the characters drawn in the data broadcast in a clean and easy-to-see state.

Furthermore, according to the digital broadcast receiver 1 in the first embodiment, the CPU 211 executing the setting program 213d can set the intermediate color ratio to be smaller as the character size is smaller.
In other words, the smaller the size of the character, the more difficult it is to see the character because the intermediate color becomes odd when there is no color suitable for the intermediate color or when the color suitable for the intermediate color is not specified. Since the degree of narrowing the intermediate color region R2 can be increased as the size is reduced, the characters drawn in the data broadcast can be displayed in a more clear and clear state.

[Second Embodiment]
Next, a digital broadcast receiver 1A according to the second embodiment will be described.

<Configuration of digital broadcast receiver>
First, the configuration of the digital broadcast receiver 1A will be described with reference to FIG.
Note that the digital broadcast receiver 1A of the second embodiment only sets the ratio other than the standard ratio as the intermediate color ratio even when the character size is not equal to or less than the predetermined threshold. Different from the broadcast receiver 1 (FIG. 1). Specifically, a part of the setting program 213d in the digital broadcast receiver 1 (FIG. 1) is different. Therefore, only different parts will be described, and other common parts will be described with the same reference numerals.

  For example, as shown in FIG. 6, the digital broadcast receiver 1A includes a tuner 11, a demodulation unit 12, a separation unit 13, an audio decoder 14, an audio output unit 15, a video decoder 16, and a data broadcast screen generation. The unit 17, the video composition unit 18, the display unit 19, the operation unit 20, the control unit 21 </ b> A, and the like are configured.

  As shown in FIG. 6, for example, the control unit 21A includes a CPU 211, a RAM 212, a storage unit 213A, and the like.

  For example, as shown in FIG. 6, the storage unit 213 stores a data broadcast information storage file 213a, an acquisition program 213b, a determination program 213c, a setting program 213dA, a display control program 213e, and the like.

  For example, when the CPU 211 that executed the determination program 213c determines that the character size is not equal to or less than a predetermined threshold, the setting program 213dA sets the intermediate color ratio to be larger than the standard ratio and executes the determination program 213c. When the CPU 211 determines that the character size is equal to or smaller than the predetermined threshold, the CPU 211 is caused to realize a function of setting the intermediate color ratio to be smaller than the standard ratio.

When the CPU 211 determines that the character size is equal to or smaller than a predetermined threshold, for example, the CPU 211 sets the intermediate color ratio to be smaller as the character size is smaller, and the character size is not smaller than the predetermined threshold value. For example, the intermediate color ratio is set to increase as the character size increases.
Specifically, for example, when the predetermined threshold is 36 dots and the standard ratio is 30%, for example, the CPU 211 determines that the character size is within the range of the first size (for example, 24 dots <character If size ≦ 36 dots), the intermediate color ratio is set to the first ratio (for example, 25%), and the character size is within the range of the second size (for example, 12 dots <character size ≦ 24 dots). If the intermediate color ratio is set to be the second ratio (for example, 20%), and the character size is within the third size range (for example, 0 dot <character size ≦ 12 dots), the intermediate color The ratio is the third ratio (for example, 15%). When the character size is within the range of the fourth size (for example, 36 dots <character size ≦ 48 dots), the intermediate color ratio is set to be the fourth ratio (for example, 32%), and the character size is set. Is within the range of the fifth size (for example, 48 dots <character size ≦ 60 dots), the intermediate color ratio is set to be the fifth ratio (for example, 34%), and the character size is the sixth size. If it is within the range (60 dots <character size), the intermediate color ratio is set to be the sixth ratio (for example, 36%).
Of course, the predetermined threshold value, the standard ratio, the range of the first to sixth sizes, and the first to sixth ratios are not limited to the values described above, and are arbitrary. In addition, the character size is divided into three levels of the first size to the third size when the character size is equal to or smaller than the threshold value, and is divided into three levels of the fourth size to the sixth size when the character size is larger than the threshold value. Although divided, it is not limited to three stages, the character size may not be divided, it may be divided into two stages, or it may be divided into four or more stages.
The CPU 211 functions as a setting unit by executing the setting program 213dA.

<Character drawing process>
Processing related to the drawing of characters based on data broadcast information by the digital broadcast receiver 1A will be described with reference to the flowcharts of FIGS.

  First, when the CPU 211 stores the data broadcast information in the data broadcast information storage file 213a, the CPU 211 executes the acquisition program 213b and executes the data broadcast based on the size information of the character information bulletin in the stored data broadcast information. The character size based on the information is acquired (step S31).

  Next, the CPU 211 executes the determination program 213c to determine whether or not the acquired character size is equal to or smaller than a predetermined threshold (step S32).

  If it is determined in step S32 that the size of the acquired character is equal to or smaller than a predetermined threshold (step S32; Yes), the CPU 211 executes the setting program 213dA, and the size of the acquired character is It is determined whether the size is within a range of one size (threshold ≧ first size) (step S33).

  If it is determined in step S33 that the acquired character size is within the first size range (step S33; Yes), the CPU 211 sets the first ratio (standard ratio> first ratio) as the intermediate color ratio. (Step S34), the process proceeds to Step S43.

  On the other hand, if it is determined in step S33 that the size of the acquired character is not within the range of the first size (step S33; No), the CPU 211 determines that the size of the acquired character is the second size (first size). It is determined whether the size is within the range of size> second size (step S35).

  If it is determined in step S35 that the acquired character size is within the range of the second size (step S35; Yes), the CPU 211 sets the second ratio (first ratio> second ratio) as the intermediate color ratio. After setting (step S35), the process proceeds to step S43.

  On the other hand, if it is determined in step S35 that the acquired character size is not within the range of the second size (step S35; No), that is, the acquired character size is the third size (second size). If it is determined that it is> third size), the CPU 211 sets the third ratio (second ratio> third ratio) as the intermediate color ratio (step S37), and proceeds to the processing of step S43.

  If it is determined in step S32 that the acquired character size is not less than or equal to the predetermined threshold (step S32; No), the CPU 211 determines that the acquired character size is the fourth size (fourth size> It is determined whether it is within the range of (threshold value) (step S38).

  If it is determined in step S38 that the acquired character size is within the range of the fourth size (step S38; Yes), the CPU 211 sets the fourth ratio (fourth ratio> standard ratio) as the intermediate color ratio. (Step S39), the process proceeds to Step S43.

  On the other hand, if it is determined in step S38 that the acquired character size is not within the range of the fourth size (step S38; No), the CPU 211 determines that the acquired character size is the fifth size (fifth size). It is determined whether or not the size is in the range of size> fourth size (step S40).

  If it is determined in step S40 that the acquired character size is within the range of the fifth size (step S40; Yes), the CPU 211 sets the fifth ratio (fifth ratio> fourth ratio) as the intermediate color ratio. Set (step S41), the process proceeds to step S43.

  If it is determined in step S40 that the acquired character size is not within the range of the fifth size (step S40; No), that is, the acquired character size is the sixth size (sixth size> second). If it is determined that it is (5 sizes), the CPU 211 sets a sixth ratio (sixth ratio> fifth ratio) as the intermediate color ratio (step S42).

Next, the CPU 211 acquires font data from the data broadcast information storage file 213a (step S43), outputs the font data to the data broadcast screen generation unit 17, inputs a control signal to the data broadcast screen generation unit 17, and sets the data. The character colored region R1 and intermediate color region R2 are drawn with the intermediate color ratio drawn (step S44), and the process is terminated.
As a result, characters based on the data broadcast information in which the character color region R1 and the intermediate color region R2 are colored at the set intermediate color ratio are displayed on the display unit 19.

According to the digital broadcast receiver 1A in the second embodiment described above, the CPU 211 that has executed the setting program 213dA sets the intermediate color ratio in advance when it is determined that the character size is not equal to or less than a predetermined threshold. It can be set to be larger than the standard ratio.
That is, when the character size is large, the intermediate color region R2 can be widened, so that the intermediate color can be emphasized, and the characters drawn in the data broadcast can be easily viewed and displayed in a clean state.

Furthermore, according to the digital broadcast receiver 1A in the second embodiment, the CPU 211 that has executed the setting program 213dA can set the intermediate color ratio to increase as the character size increases.
That is, as the character size increases, the degree of expanding the intermediate color region R2 can be increased, so that characters drawn in the data broadcast can be displayed more clearly and clearly.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist thereof.

It is a block diagram which shows the functional structure of the digital broadcast receiver in 1st Embodiment. It is a figure which shows an example of the screen which consists of the data broadcast screen which consists of the program broadcast screen based on program broadcast information and the character based on data broadcast information, and a screen displayed on the display part. It is a figure for demonstrating a character color area | region, a middle color area | region, and a background color area | region. It is a figure which shows before and after making an intermediate | middle color ratio smaller than the preset standard ratio. It is a flowchart for demonstrating the process regarding the drawing of the character based on the data broadcast information by the digital broadcast receiver in 1st Embodiment. It is a block diagram which shows the functional structure of the digital broadcast receiver in 2nd Embodiment. It is a 1st flowchart for demonstrating the process regarding the drawing of the character based on the data broadcast information by the digital broadcast receiver in 2nd Embodiment. It is a 2nd flowchart for demonstrating the process regarding the drawing of the character based on the data broadcast information by the digital broadcast receiver in 2nd Embodiment.

Explanation of symbols

1,1A Digital broadcast receiver 19 Display unit 211 CPU (acquisition means, determination means, setting means, display control means)
213b Acquisition program (acquisition means)
213c Judgment program (judgment means)
213d, 213dA setting program (setting means)
213e Display control program (display control means)
R1 Character color region R2 Intermediate color region R3 Background color region W1 Character color region width W2 Intermediate color region width

Claims (4)

In a digital broadcast receiver that receives data broadcast information and displays characters based on the data broadcast information on the display unit,
The data broadcast information includes a character color that is a color of the character itself, a background color that is a background color of the character, a character color region that is colored with the character color, and a background color region that is colored with the background color. Color information regarding the intermediate color displayed in the area bordering the character color area between and
Obtaining means for obtaining the size of the character based on the data broadcast information;
Determining means for determining whether the size of the character acquired by the acquiring means is equal to or less than a predetermined threshold;
When the determination means determines that the size of the character is equal to or smaller than a predetermined threshold, the width of the character color region is widened while keeping the sum of the width of the character color region and the width of the intermediate color region as it is. by the setting means the ratio of the width of the intermediate color area to the width of the character color region is set to be smaller than a predetermined ratio,
Display control means for displaying the character on the display unit by coloring the character color area and the intermediate color area at a ratio set by the setting means;
A digital broadcast receiver comprising: The digital broadcast receiver according to claim 1, wherein
The digital broadcast receiver according to claim 1, wherein the setting means sets the ratio to be smaller as the size of the character obtained by the obtaining means is smaller. The digital broadcast receiver according to claim 1 or 2,
The setting means sets the ratio to be larger than the preset ratio when the determining means determines that the size of the character is not less than a predetermined threshold value. Receiving machine. The digital broadcast receiver according to claim 3,
The digital broadcast receiver according to claim 1, wherein the setting means sets the ratio to increase as the size of the character acquired by the acquisition means increases.

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