JP2003058139A - Device and method for display control - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct flashing operations of character data and bit map data. SOLUTION: The device is provided with decoding sections 40 and 41 which decode character data and/or bit map data, signal detecting sections 40 and 41 which detect blinking start signals and blinking stop signals from decoded character data and/or bit map data, a generating section 42 which generates the combinations for blinking operation color indexes corresponding to the colors of the decoded character data and/or bit map data in accordance with the detected blinking start and stop signals, a storage section 42 which stores the color index combinations for the blinking operations, a plotting section 43 which conducts plotting for the decoded character data and/or the bit map data in accordance with the color index combinations for the blinking operations and a timer management section 44 which manages the timer for the starting time of the plotting on the character data and/or the bit map data decoded by the section 43 in accordance with the blinking start and stop signals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display control device and method for blinking character data and bitmap data.

[0002]

2. Description of the Related Art BS digital broadcasting is currently under the Ministry of Posts and Telecommunications
Notification and Radio Industry (ARIB, Association)
of Radio Industries and Businesses). According to the above rules, monomedia such as character / graphics, still images, moving images, and audio are multiplexed and transmitted by a data stream transmission system or a data carousel transmission system. The receiving device receives the data transmitted by the data stream transmission method or the data carousel transmission method, and separates the data into individual mono-media data. The receiving device decodes individual mono-media data by a decoder, and presents a subtitle plane and a video for presenting subtitle super and character super (hereinafter referred to as subtitle / superimpose) from the decoded individual monomedia data. A moving picture plane, a still picture plane for presenting a still picture, a moving picture still picture switching plane for switching and controlling a moving picture and a still picture, and BML (Broa Broa) which is a script language for broadcasting used in BS digital broadcasting.
A character / graphic plane that presents dcast Markup Language) data is generated, and the generated planes are combined by the combining unit.

The logical structure of the combined plane is
As shown in FIG. 8, the subtitle plane 60, the character / graphic plane 61, the moving picture / still picture switching plane 62, the still picture plane 63, and the moving picture plane 64 are arranged from the highest level. The composite plane configured as described above is displayed by a display device such as an OSD.

When the subtitle / superimpose is supplied to the subtitle plane 60, the decoder unit decodes the character data and / or the bitmap data forming the subtitle / superimpose. As for the character data and / or the bitmap data, the character data and the bitmap data are drawn in the memory according to the color data obtained by the decoding process.

To draw character data and / or bitmap data in the memory, a CLUT (Color Look Up Table) composed of color data and a color index corresponding to the color data is used to draw in the memory. There is a way to do it. This is a method in which a color index is written in pixel data corresponding to a pixel in a memory, and then the color index written in each pixel data is replaced with the corresponding color data and written in the memory. There is also a method of directly writing the color data into the pixel data on the memory.

[0006]

The above-mentioned receiving device is provided with a flushing operation section for performing a flushing operation on character data and / or bitmap data. The flushing operation unit includes a decoder unit that decodes character data and bitmap data, a drawing unit that draws according to the color data obtained at the time of decoding, a flushing management unit that manages the flushing (blinking) operation, and a flushing operation. A timer management unit that manages the timer is provided.

Since the above-mentioned flushing operation unit is dependent on each other, it strongly depends on the system to be used, and the colorimetry used at the time of drawing and the timer for starting, firing, and stopping the timer used for the flushing operation. It is necessary to provide processing for each system, and there is a problem of lacking versatility.

Further, colorimetry used for drawing,
The timer processing such as starting, firing and stopping of the timer used for flushing operation strongly depends on the system to be used.Therefore, if the system environment is different, there is a decrease in reliability and maintenance due to improvement of the flushing operation part. I have a difficult problem.

Therefore, the present invention has been proposed in view of the above-mentioned situation, and the flushing operation can be performed even in a system in which the flushing operation methods are operated independently of each other. It is an object of the present invention to provide a display adjustment apparatus and method.

[0010]

In order to solve the above-mentioned problems, a display control device according to the present invention is coded and added with a blinking start signal for starting blinking and a blinking stop signal for stopping blinking. Character data and / or bitmap data is supplied, and a decoding means for decoding the character data and / or bitmap data, and the blinking start signal and the decoding start signal from the decoded character data and / or bitmap data. A signal detecting means for detecting a blinking stop signal, and a light operation corresponding to the color of the decoded character data and / or the bit map data according to the blinking start signal and the blinking stop signal detected by the signal detecting means. Generating means for generating a combination of the color index for the light operation and the color index for the dark operation, and the color index for the light operation. Storage means for storing a combination of a color index for black and white, and the decoded character data and the color data for the white color and the color index for black and white stored in the storage means. And / or drawing means for drawing on the bitmap data, and a start time timer for drawing on the decoded character data and / or bitmap data by the drawing means in response to the blinking start signal and the blinking stop signal. And a timer management unit for managing the blinking start signal and the blinking stop signal detected by the signal detecting unit, and blinks a predetermined range of character data and / or bitmap data. .

In this display control device, character data and / or
Or, a decoding means for decoding the bitmap data, a generating means for generating a combination of a color index for a bright operation and a color index for a dark operation, and the character data and the bitmap data according to the combination of the color index. The drawing means for drawing and the timer managing means for managing the timer of the drawing means are independently operated to blink the character data and the bit map data between the blinking start signal and the blinking stop signal.

In order to solve the above-mentioned problems, the display control method according to the present invention is character data and / or bits encoded and added with a blinking start signal for starting blinking and a blinking stop signal for stopping blinking. Decoding map data, detecting the blinking start signal and the blinking stop signal from the decoded character data and / or bitmap data, and responding to the detected blinking start signal and the blinking stop signal, A combination of a color index for light operation and a color index for light operation corresponding to the color of the decoded character data and / or bitmap data is generated, and the color index for light operation and the color index for light operation are generated. The combination of is stored in the storage unit, and from the storage unit, the color index for the bright operation and the color index for the dark operation are stored. Reading a combination of the index,
In accordance with a combination of the color index for the light operation and the color index for the dark operation stored in the storage unit, issue a timer of a start time for drawing the decoded character data and / or bitmap data, In accordance with the blinking start signal and the blinking stop signal, a predetermined range of character data and / or bitmap data is blinked.

In this display control method, character data and / or
Alternatively, the bitmap data is decoded, a combination of a color index for a bright operation and a color index for a dark operation is generated, and the character data and the bitmap data are drawn in accordance with the combination of the color indexes. The timer management is performed, and the character data and the bit map data between the blink start signal and the blink stop signal are blinked.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The present invention is applied to a receiving system 1 as shown in FIG. 1, for example.

As shown in FIG. 1, the receiving system 1 includes an antenna 10 for receiving a broadcast signal and a display adjusting device 1 for demodulating and adjusting the broadcast signal received by the antenna 10.
1, a monitor 12 for displaying an image, and a display adjustment device 11
And a remote control unit 13 for remotely controlling the.

The antenna 10 includes a feed horn and an LN.
It has a B (Low Noise Block) down converter, for example, satellite broadcasting (BS, Broadcast Satellite)
The high frequency signal transmitted from is received by the feed horn and down-converted to a predetermined frequency by the LNB,
It is supplied to the display adjustment device 11.

The display adjusting device 11 performs a predetermined process on the signal supplied from the antenna 10 and supplies, for example, a video signal to the monitor 12. The display adjustment device 11 also has a front panel on which a plurality of button switches for operation are arranged. The display adjustment device 11 may be, for example, an IRD (In
integrated receiver decoder).

The remote control section 13 inputs an operation command to the display adjusting device 11 by an infrared signal. That is,
When a predetermined operation is performed, the remote control unit 13 sends an infrared signal corresponding to the predetermined operation from the infrared transmission unit to the display adjustment device 11.
Send to. The remote control unit 13 may remotely operate the display adjustment device 11 with a signal other than infrared rays.

The structure of the display adjusting device 11 will be described with reference to FIG.

The display adjusting device 11 includes an input terminal 20, a front end unit 21, a demultiplexer unit 22, a first RAM 23, an AV decoder unit 24, and a second RA.
M25, NTSC encoder section 26, video output terminal 27, D / A conversion section 28, audio output terminal 29, control signal receiving section 30, control signal processing section 31, front operating section 32, and CPU 33. , ROM34 and the third R
AM35 and. The bus A is a host bus and the bus B is a serial bus.

A signal is supplied from the antenna 10 to the input terminal 20. Then, the input terminal 20 supplies a signal to the front end section 21. The front end unit 21 demodulates the supplied signal, corrects the error, performs A / D conversion, and then supplies the signal to the demultiplexer unit 22. The demultiplexer unit 22 stores the signal supplied from the front end unit 21 in the first RAM 23 as appropriate,
The video signal and the audio signal are divided into various signals such as an audio signal, a character super signal and a caption super signal, and the video signal and the audio signal are supplied to the AV decoder unit 24. The character super signal and the caption super signal are, for example, the first RAM.
23.

The AV decoder section 24 appropriately stores each signal supplied from the demultiplexer section 22 in the second RAM 25 and performs a decoding process. The AV decoder unit 24
For example, the decoded video signal is supplied to the NTSC encoder unit 26. The second RAM is, for example, VR.
AM (Video Ramdom Access Memory). VRAM
Stores image data for screen display.

The NTSC encoder unit 26 converts the video signal supplied from the AV decoder unit 24 into an NTSC luminance signal (Y) and a chroma signal (Cr, Cb). The NTSC encoder unit 26 converts the signal converted into each signal of the NTSC system, for example, D / A conversion into an analog signal, and supplies the analog signal to the video output terminal 27. Also, A
The V decoder unit 24 supplies the decoded audio signal to the D / A conversion unit 28, for example. D / A converter 28
Converts the audio signal supplied from the AV decoder section 24 into an analog audio signal and outputs the audio output terminal 29.
Supply to.

The control signal receiving section 30 receives an infrared signal from the remote control section 13. The control signal receiving unit 30
May receive a control signal other than infrared rays, and in that case, the remote control unit 13 transmits to the control signal receiving unit 30 a control signal of a standard suitable for the control signal receiving unit 30. The control signal receiving unit 30 receives the received signal from the control signal processing unit 31.
Supply to.

The front operation section 32 is provided with an operation button and a display section, generates a control signal by operating the operation button, and supplies the control signal to the control signal processing section 31. The front operation unit 32 can be operated in the same manner as the remote operation unit 13.

The control signal processing section 31 includes a control signal receiving section 3
0 or a control signal supplied from the front operation unit 32 is decoded, and the decoded control signal is transferred to the bus B.
Is supplied to the CPU 33 via. The CPU 33 controls and calculates the entire display adjustment device 11, and manages and controls a timer. CPU 33 is a ROM via bus A
34 to the bus B from the control signal processing unit 31.
The ROM 34 according to a control signal supplied via
Various programs stored in are started up and predetermined processing is performed. The ROM 34 stores various programs and information such as display data. The above display data is
It is used for the display unit of the front operation unit 32. Also, the third
The RAM 35 is a storage unit that writes and reads programs and information read from the ROM 34.

The CPU 33 fetches the subtitle super and character super (hereinafter referred to as subtitle / character super) stored in the first RAM 23 from the demultiplexer unit 22. It should be noted that the CPU 33 stores the subtitles / superimposed characters in the third RAM 35 as appropriate when the subtitles / superimposed text are captured.

Here, the flushing operation unit 2 for performing the flushing operation on the subtitle / superimposed character will be described with reference to the object correlation diagram of FIG. As shown in FIG. 3, the flushing operation unit 2 includes a character data decoder unit 40, a bitmap data decoder unit 41, a flushing management unit 42, a drawing unit 43, and a timer management unit 44.

When the subtitle / superimpose stored in the third RAM 35 is character data, the character data is
The bitmap data is supplied to the character data decoder unit 40, and in the case of bitmap data, the bitmap data is supplied to the bitmap data decoder unit 41.

The character data decoder section 40 is a decoder section for decoding the supplied character data. In addition, the character data decoder unit 40 is, for example, an Association of Radio Industries and
8 units character code data defined in the standard of Businesses) and BML (Broadcast Markup L) which is a scripting language for broadcasting used in BS digital broadcasting.
anguage) Decode 8 unit character code data as a mono-media externally referenced from the data.

The bit map data decoder section 41 is a decoder section for decoding the supplied bit map data. In addition, the bitmap data decoder unit 41
Similar to the character data decoder unit 40, for example, bitmap data defined in the standards of the radio industry industry or BML (Broadcast Markup Langu) which is a scripting language for broadcasting used in BS digital broadcasting.
age) Decodes the bitmap data as a mono media that is externally referenced from the data.

The flashing management unit 42 corresponds to the color data of the character data or bitmap data to be flushed, and the color index for the light operation and the color index for the dark operation (hereinafter referred to as the color index for the flushing operation). Of the flashing operation is generated, and an identifier is assigned to the combination to manage the state of the flushing operation. The identifier is assigned
It does not overlap.

The drawing unit 43 includes a character data decoder unit 40.
Drawing is performed on the pixel data of the second RAM 25 based on the character data and the color data of the character data supplied from the bit map data and the color data of the bitmap data and the color data of the bit map data supplied from the bit map decoder unit.

The timer management unit 44 manages timers such as the start and stop of drawing in the drawing operation of the drawing unit 43.

The flushing operation of the character data by the flushing operation unit 2 will be described below.

The character data decoder section 40 decodes the supplied character data. At this time, a control code FLC (Flashing Control) requesting the start of flushing.
l) When a signal is detected, the character data decoder unit 40
Supplies the flushing management unit 42 with a "register flushing target color index" message (1) requesting registration of the flushing target color index in order to perform the flushing operation on the character data after the control code FLC signal. Further, the character data decoder unit 40 supplies the color index indicating the color data of the character data to the flushing management unit 42 together with the message (1). The color data has two gradations, that is, the foreground color index and the background color index.

When the color index indicating the color data of the message (1) and the character data is supplied, the flushing management unit 42 generates and generates a combination of color indexes for the flushing operation based on the color index. Assign an identifier to the combination. Note that the combinations of color indexes do not overlap.

Here, the operation of assigning the identifier by the flushing management unit 42 will be described with reference to FIGS. For example, as shown in FIG. 4, color data 50 represented by eight types of αRGB values (αRGB _{1 to} αRGB ₈ ).
And a CLUT formed by the color indexes 51 from 0 to 7 corresponding to the color data 50.
(Color Look Up Table) is the second RAM 25, RO
It is assumed that it is stored in M34 or the third RAM 35. The number of CLUT color data does not have to be eight. Further, α represents a transmission coefficient, and α value,
The R value, G value, and B value are arbitrary values.

As shown in FIG. 5, the flushing management section 42 uses the color index "1" of the foreground color supplied from the character data decoder section 40 as the color index for the light operation, and the color index of the background color "". 4 "
A color index combination is generated as the color index for the delete operation, and the identifier “A” is assigned to the generated color index combination. Similarly, a combination of the light operation color index “1” and the light operation color index “3” is generated, and the identifier “B” is assigned to the combination. Hereinafter, as many combinations of color indexes for the flushing operation as necessary are generated, and identifiers are assigned to the generated combinations. The identifier is assigned so as not to overlap with the color index shown in FIG.

The flushing management section 42 supplies the character data decoder section 40 with the "color index for flushing operation" message (2) notifying the identifier assigned as described above. In addition, the flushing management unit 42
Supplies the identifier to the character data decoder unit 40 together with the message (2).

When the message (2) and the identifier are supplied, the character data decoder unit 40 replaces the color index of the foreground color and the color index of the background color of the character data with the supplied identifier. Then, the character data decoder unit 40 supplies the "character drawing" message (3) requesting the drawing of the character data to the drawing unit 43. The character data decoder unit 40 supplies the character data and the identifier to the drawing unit 43 together with the message (3). Further, the character data decoder unit 40 supplies the "flushing start" message (4) requesting the start of flushing to the timer management unit 44.

The timer management unit 44 displays the message (4)
When is supplied, a periodic timer for flushing operation that fires at regular intervals is started and monitored. If the cycle timer for flushing operation has already started, the cycle timer is not newly started. The timer management unit 44 fires the cycle timer for the flushing operation, and sends to the drawing unit 43 a message (5) "Ignition of the cycle timer for flushing operation" that notifies the drawing unit 43 that the cycle timer for the flushing operation has been fired. Supply.

When the message (5) is supplied, the drawing unit 43 flushes the "identifier search" message (6) requesting the search of the color index for the flushing operation of the identifier supplied together with the message (3). Supply to the section 42. The drawing unit 43 supplies the message (6) to the flushing management unit 42. When the message (6) is supplied, the flushing management unit 42 detects the color index for flushing operation based on the identifier. Then, the flushing management unit 42 supplies the “blinking operation color index detection” message (7), which notifies that the color index for the flushing operation has been detected, to the drawing unit 43 together with the detected color index for the flushing operation. The drawing unit 43, based on the color index for the flushing operation supplied from the flushing management unit 42, CL
Copy the color data 50 from the UT to the second RAM
Drawing is performed on 25 pixel data.

Here, the search of the color index for the flushing operation and the copying of the color data by the drawing unit 43 will be described with reference to FIG.

When the drawing section 43 is supplied with the color index "1" for the bright operation of the identifier "A" from the flushing management section 42, as shown in FIG.
The color data corresponding to the color index “1” is searched with reference to the CLUT, and the searched color data “αRGB ₂ ” is searched.
To copy. Further, when the flushing management unit 42 supplies the color index "4" for the destruction operation with the identifier "A", the color data corresponding to the color index "4" is searched as shown in FIG. 6B. , Copy the retrieved color data “αRGB ₅ ”. Similarly, the identifier "B"
The color data corresponding to the bright operation color index “1” and the dark operation color index “3” are searched, and the searched color data “αRGB ₂ ” and the color data “α” are searched.
RGB ₄ ”is copied.

Then, the drawing unit 43 draws by writing the color data in a memory such as a VRAM. As a writing method at this time, as shown in FIG.
An identifier is written in pixel data corresponding to a pixel of a memory such as RAM, and then the identifier written in each pixel data is replaced with corresponding color data, as shown in FIG. , The copied color data “αRGB ₂ ” and the color data “αRG
There is a method of directly writing “B ₅ ” into pixel data on a memory such as VRAM. Each cell shown in FIG. 7A corresponds to pixel data on one VRAM.

In this way, the flushing operation unit 2
Performs the flushing operation on the character data by searching the color index for the flushing operation and copying the color data.

Further, when the character data decoder unit 40 detects the control code FLC signal requesting the end of the flushing while decoding the supplied character data, the character data decoder unit 40 performs the flushing operation. The “flushing release” message (8) that conveys the release is supplied to the flushing management unit 42. Further, the character data decoder unit 40 supplies the flushed management unit 42 with the replaced identifier together with the message (8). The flushing management unit 42 searches for a combination of color indexes for the flushing operation based on the supplied identifier, and searches for a matching identifier. Then, the flushing management unit 42 supplies the color index for the flushing operation of the retrieved identifier to the character data decoder unit 40 together with the “color index” message (9) notifying the retrieved color index.

The character data decoder unit 40 restores the supplied light operation color index to the foreground color index and restores the dark operation color index to the background color index.

Further, the character data decoder section 40 supplies a "flushing operation stop" message (10) requesting the stop of the flushing operation to the timer management section 44. When the message (10) is supplied, the timer management unit 44 stops the activated periodic timer for the flushing operation and also stops the firing of the drawing unit 43. Then, the timer management unit 44 supplies the drawing unit 43 with a “flushing operation period timer” message (11) indicating that the firing of the flushing period timer has been stopped. The stop of the flushing operation means, for example, a control code F for starting and ending the flushing in the case of an initialization operation accompanied by a control signal CS and a screen update.
This is to stop the flushing operation of the target character string being flushed by LC.

The drawing section 43 supplies a "flushing operation stop" message (12) to the flushing management section 42 to inform the stop of the flushing operation.

When the message (12) is supplied, the flushing management unit 42 combines the bright operation color index and the dark operation color index with each other.
Remove the identifier and everything.

As described above, the flushing operation unit 2 flushes the character data from the control code FLC signal requesting the start of flushing detected when decoding the character data to the control code FLC signal requesting the stop of flushing. Take action. When the character data decoder unit 40 does not detect the control code FLC signal when decoding the supplied character data, the character data decoder unit 40 requests the character data to be drawn by the “character drawing” message (3 ) Together with the character data and the color index of the character data to the drawing unit 43. Then, the drawing unit 43 copies the color data from the CLUT based on the supplied color index and draws on the pixel data of the second RAM 25.

Next, the flushing operation of the bitmap data by the flushing operation unit 2 will be described.

According to the standard of subtitle character superimposition in BS digital broadcasting, when decoding bitmap data, the flushing operation of the background color of the bitmap data may be defined in the character data string by the raster color. Therefore, in the present embodiment, the bitmap data decoder unit 41
When decoding bitmap data with, it is necessary to confirm whether the raster color is specified.

The bitmap data decoder unit 41 supplies a "raster color confirmation" message (13) to the character data decoder unit 40 to confirm whether the background color flushing operation of the bitmap data is defined by the raster color. To do.

When the message (13) is supplied, the character data decoder section 40 retrieves the specified raster color, and if the raster color is specified, notifies the color index representing the raster color. The “color notification” message (14) is supplied to the bitmap data decoder unit 41. Further, the character data decoder unit 40 supplies a color index representing the raster color to the bitmap data decoder unit 41 together with the message (14).
The color index supplied at this time is the color index of the background color.

When the raster color is not specified,
The character data decoder unit 40 notifies the bitmap data decoder unit 41 that the raster color is not defined. In this case, the bitmap data decoder unit 41
The bitmap data is decoded by using the background color as a transparent color.

The bitmap data decoder unit 41 stores the supplied color index and analyzes the flushing header included in the bitmap data.
At this time, if the target data for flushing is detected,
The bitmap data decoder unit 41 issues a “register flushing target color index” message (15) requesting registration of the flushing target color index to perform flushing on the bitmap data that is the flushing target. 42. Further, the bitmap data decoder unit 41 supplies the color index indicating the color data of the bitmap data to the flushing management unit 42 together with the message (15). The color data has two gradations, that is, the color index of the foreground color and the color index of the background color representing the raster color.

When the message (15) and the color index indicating the color data of the bitmap data are supplied, the flushing management unit 42 generates a combination of color indexes for the flushing operation based on the color index, and generates the combination. An identifier is assigned to the selected combination. Note that the combinations of color indexes do not overlap.

The flushing management section 42 supplies the "color index for flushing operation" message (16) notifying the assigned identifier to the bitmap data decoder section 41. In addition, the flushing management unit 42
Supplies the identifier to the bitmap data decoder unit 41 together with the message (16).

When the message (16) and the identifier are supplied, the bitmap data decoder unit 41 replaces the color index of the foreground color of the bitmap data and the color index of the background color representing the raster color with the supplied identifier. . Then, the bitmap data decoder unit 41 supplies a “bitmap drawing” message (17) requesting drawing of bitmap data to the drawing unit 43. The bitmap data decoder unit 41 supplies the bitmap data and the identifier together with the message (17) to the drawing unit 43. Also, the bitmap data decoder unit 41 issues a “flushing start” message (18) requesting the start of flushing to the timer management unit 44.
Supply to.

The timer management unit 44 uses the message (1
When 8) is supplied, the periodic timer for the flushing operation that fires at regular time intervals is started and monitored. In addition,
If the cycle timer for the flushing operation has already started, the cycle timer is not newly started. The timer management unit 44 fires the cycle timer for the flushing operation and draws the cycle timer for the flushing operation into the drawing unit 43.
The message "5," Ignition of the periodic timer for flushing operation "is transmitted to the drawing unit 43 to inform the drawing unit 43 that the ignition has occurred.

When the message (5) is supplied, the drawing unit 43 flushes the "identifier search" message (6) requesting the search of the color index for the flushing operation of the identifier supplied together with the message (17). Supply to the section 42. The drawing unit 43 supplies the message (6) to the flushing management unit 42. When the message (6) is supplied, the flushing management unit 42 detects the color index for flushing operation based on the identifier. Then, the flushing management unit 42 supplies the “blinking operation color index detection” message (7), which notifies that the color index for the flushing operation has been detected, to the drawing unit 43 together with the detected color index for the flushing operation.

When the color index for the flushing operation is supplied from the flushing management section 42, the drawing section 43 refers to the CLUT to search the color data corresponding to each color index and copy the retrieved color data. Then, drawing is performed by writing the color data in a memory such as a VRAM. As a writing method at this time, a color index for flushing operation is written in pixel data corresponding to a pixel of a memory such as VRAM, and then the color index written in each pixel data is replaced with corresponding color data, VRAM
And the like, and a method of directly writing the copied color data to the pixel data on the memory such as VRAM.

In this way, the flushing operation unit 2
Performs the flushing operation on the bitmap data by searching the color index for the flushing operation and copying the color data.

In addition, the bit map data decoder section 41
"Unflushing" to inform you of the cancellation of flushing
The message (19) is supplied to the flushing management unit 42. Further, the bitmap data decoder unit 41 supplies the replaced identifier together with the message (19) to the flushing management unit 42. Flushing management unit 42
Searches for a combination of color indexes for the flushing operation based on the supplied identifiers and a matching identifier. Then, the flushing management unit 42
Supplies the color index for the flushing operation of the searched identifier to the bitmap data decoder unit 41 together with the “color index” message (20) notifying the searched color index.

The bitmap data decoder unit 41 performs the operation of returning the supplied light operation color index to the foreground color index, and returning the dark operation color index to the background color index representing the raster color. .

Further, the bit map data decoder section 41
Supplies a "flushing operation stop" message (21) requesting the stop of the flushing operation to the timer management unit 44 in order to stop the flushing operation of the bitmap data after the control code FLC signal. When the message (21) is supplied, the timer management unit 44 stops the activated periodic timer for the flushing operation and also stops the firing of the drawing unit 43. And
The timer management unit 44 supplies the drawing unit 43 with a “flushing operation period timer” message (11) indicating that the firing of the flushing period timer has been stopped.

The drawing unit 43 supplies the "flushing operation stop" message (12) which informs the flushing operation stop to the flushing management unit 42.

When the message (12) is supplied, the flushing management section 42 combines the bright operation color index and the dark operation color index with each other.
Remove the identifier and everything.

As described above, the flushing operation unit 2 performs flushing on the bitmap data which is the target of flushing detected by the analysis of the flushing header when decoding the bitmap data. In addition, when the flushing data is not detected from the flushing header during the decoding process of the bitmap data, the bitmap data decoder unit 41 outputs the “bitmap rendering” message (17) requesting the rendering of the bitmap data. The bitmap data and the color index of the bitmap data are supplied to the drawing unit 43. Then, the drawing unit 43 copies the color data from the CLUT based on the supplied color index and draws on the pixel data of the second RAM 25.

If the subtitle / superimpose is formed of character data and bitmap data and the data range for performing the flushing operation includes character data and bitmap data, the timer management unit 44 , When the message (4) is supplied from the character data decoder unit 40 and the message (18) is supplied from the bitmap data decoder unit 41, the periodic timer for the flushing operation is fired and the message (5) is drawn. To the part 43.

The flushing operation unit 2 of the present embodiment
Is an application program such as the ROM 3
4 and the third RAM 35. Further, although the color data has two gradations of the foreground color and the background color, the color data may have two gradations or more.

As described above, in the reception system 1 according to the embodiment of the present invention, the display adjustment device 11 causes the antenna 10 to operate.
The demultiplexer unit 22 separates the multiplexed signal supplied from the above into various signals such as subtitle / superimpose signals, and the subtitle / superimposes are flushed by the flushing operation unit 2 and displayed on the monitor 12.
Therefore, according to the present invention, the flushing management unit 42 of the flushing operation unit 2 is independent of the character data decoder unit 40, the bitmap data decoder unit 41, and the drawing unit 43, and the character data and bitmap data to be flushed are By storing the combination of color indexes when performing the flushing operation and managing the flushing operation state, it is possible to perform the flushing operation on the character data and / or the bitmap data without depending on the colorimetry of the system. Drawing can be performed by the drawing unit 43 without depending.

Further, in the present invention, the timer management unit 44 for starting, firing and stopping the timer of the flushing operation.
However, since it is independent from the character data decoder unit 40, the bitmap data decoder unit 41, and the drawing unit 43, it is possible to easily control and manage the timer related to the entire system, and the timer management unit 44 is Even if character data and bitmap data are included in the data range in which the flushing operation is performed, the periodic timer for the flushing operation can be fired only once, so the consumption of limited timer resources can be kept low. it can. Further, according to the present invention, since the character data decoder unit 40, the bitmap data decoder unit 41, the flushing management unit 42, and the drawing unit 43 of the flushing operation unit 2 are independent of each other, the function of each unit can be improved. It is possible to improve reliability and maintainability.

[0078]

As described above in detail, in the display control device according to the present invention, when the flushing operation is performed on the character data and / or the bitmap data, the character data decoder section for decoding the character data and the bitmap are provided. A bitmap decoder that decodes data, a flushing management unit that generates a combination of a color index for bright operation and a color index for dark operation, and assigns an identifier to the generated combination, character data and / or
Further, a drawing unit for drawing the bitmap data in the memory according to the color index for the light operation and the color index for the dark operation, and a timer management unit for managing the start, firing and stop of the timer during the flushing operation, respectively. Since it operates independently, it is possible to perform the flushing operation on the character data and / or the bitmap data without depending on the colorimetry of the system, and the drawing unit can perform the drawing regardless of the flushing operation state. Since it is possible to improve the function of each part, it is possible to improve reliability and maintainability. Further, it is possible to easily control and manage the timer related to the entire system. Further, even if the character data and the bitmap data are included in the data range in which the flushing operation is performed, the period timer for the flushing operation can be fired only once, so the consumption of limited timer resources can be kept low. Is possible.

In the display control method according to the present invention, when the character data and / or the bitmap data is decoded and the signal of the flushing operation start is detected, the combination of the color indexes for the flushing operation is generated, and the combination is generated. An identifier is assigned, and the flashing operation is performed on the character data and bitmap data based on the above-mentioned identifier when the timer is fired.Therefore, it is possible to perform the flashing operation without depending on the colorimetry of the system. It is possible to draw without depending. In addition, since the function can be improved for each operating unit that performs the flushing operation, it is possible to improve reliability and maintainability. Further, it is possible to easily control and manage the timer related to the entire system. Further, even if the character data and the bitmap data are included in the data range in which the flushing operation is performed, the period timer for the flushing operation can be fired only once, so the consumption of limited timer resources can be kept low. Is possible.

[Brief description of drawings]

FIG. 1 is a block diagram of a receiving system for receiving a broadcast signal to which the present invention is applied.

FIG. 2 is a block diagram of a display adjustment device to which the present invention is applied.

FIG. 3 is an object correlation diagram when performing a flushing operation on character data and bitmap data by the display adjustment device to which the present invention is applied.

FIG. 4 is a diagram showing a CLUT formed by color data and a color index corresponding to the color data.

FIG. 5 is a diagram illustrating a data structure of a flushing management unit that generates a combination of a bright operation color index and a dark operation color index and assigns an identifier to the generated combination.

FIG. 6 is a diagram showing how a color index for flushing an identifier is replaced with reference to a CLUT.

FIG. 7 is a diagram showing a state of a drawing operation for writing color data to a memory.

FIG. 8 is a diagram showing a logical configuration when planes are combined.

[Explanation of symbols]

1 reception system, 2 flushing operation part, 10 antenna, 11 display adjustment device, 12 monitor, 13 remote control part, 20 input terminal, 21 front end part,
22 demultiplexer section, 23 first RAM, 24
AV decoder section, 25 second RAM, 26 NTS
C encoder section, 27 video output terminal, 28 D / A conversion section, 29 audio output terminal, 30 control signal receiving section, 3
1 control signal processing unit, 32 front operating unit, 33 C
PU, 34 ROM, 35 Third RAM, 40 Character data decoder section, 41 Bitmap data decoder section, 42 Flushing management section, 43 Drawing section, 44
Timer management unit

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI Theme Coat (Reference) H04N 5/445 H04N 9/74 Z 7/08 G09G 5/00 555A 7/081 H04N 7/08 Z 9 / 74 (72) Inventor Makiko Shimada 6-735 Kitashinagawa, Shinagawa-ku, Tokyo F-term (reference) within Sony Corporation 5C025 BA30 CA02 CA09 CB10 DA05 5C063 AA01 AB03 AB05 AC01 AC05 AC10 CA23 CA29 CA36 DA03 DA07 DA13 DB10 5C066 AA03 BA01 CA21 ED04 GA01 GA22 GB01 KE09 KM11 LA02 5C082 AA02 BA02 BA12 BA27 BA41 BB01 BB26 CA16 CB01 MM05 MM06

Claims (7)

[Claims] 1. Character data and / or bitmap data encoded and provided with a blinking start signal for starting blinking and a blinking stop signal for stopping blinking are supplied, and the character data and / or bitmap data is supplied. Decoding means for decoding, signal detection means for detecting the blinking start signal and blinking stop signal from the decoded character data and / or bitmap data, and the blinking start signal detected by the signal detecting means. And generating means for generating a combination of a color index for light operation and a color index for light operation corresponding to the color of the decoded character data and / or bitmap data in response to the blink stop signal, Storage means for storing a combination of the operation color index and the operation color index; Drawing means for drawing on the decoded character data and / or bitmap data according to a combination of the color index for the light operation and the color index for the light operation stored in the storage means, and the blink start signal. And a timer management means for managing a timer of a start time for drawing the decoded character data and / or bitmap data by the drawing means according to the blinking stop signal, and the signal detecting means detects the signal. Depending on the blinking start signal and the blinking stop signal, character data within a predetermined range and / or
Alternatively, a display control device is characterized by blinking bitmap data. 2. The decoding means comprises character data decoding means for decoding encoded character data, and bitmap data decoding means for decoding encoded bitmap data. The display control device according to claim 1, wherein the display control device is provided. 3. A combination of the color index for light operation and the color index for dark operation,
The display control device according to claim 1, wherein one identifier is assigned. 4. The storage means stores the identifier, and the drawing means draws on the decoded character data and / or bitmap data according to the identifier. The display control device described. 5. When the character data and / or bitmap data in a predetermined range is blinking in response to the blinking start signal and the blinking stop signal detected by the signal detecting means, the blinking operation is ended. And a blinking operation end means for generating a blinking operation end message, wherein when the blinking operation end message is supplied to the timer management means by the blinking operation end means, the timer management means ends the drawing on the drawing means. 2. The display control device according to claim 1, wherein a timer for supplying the data is supplied to the drawing means to finish drawing the character data and / or the bitmap data. 6. The combination of the color index for light operation and the color index for dark operation is deleted from the storage means when the drawing of the character data and / or the bitmap data is ended by the drawing means. The display control device according to claim 5. 7. The encoded character data and / or bit map data, which is encoded and has a blinking start signal for starting blinking and a blinking stop signal for stopping blinking added thereto, are decoded, and the decoded character data and / or The blinking start signal and the blinking stop signal are detected from the bitmap data, and correspond to the color of the decoded character data and / or the bitmap data according to the detected blinking start signal and the blinking stop signal. A combination of the color index for the bright operation and the color index for the dark operation is generated, and the combination of the color index for the bright operation and the color index for the dark operation is stored in the storage unit. The combination of the color index of and the color index for the extinction operation is read out and stored in the storage unit. According to the combination of the color index for the writing operation and the color index for the blinking operation, the timer of the start time for drawing the decoded character data and / or the bitmap data is issued, and the blinking start signal and the blinking start signal A display control method characterized by blinking character data and / or bitmap data in a predetermined range according to a blink stop signal.