KR100283584B1 - Adaptive Data Interface Device in PDPD - Google Patents

Abstract

The present invention relates to an adaptive data interface device in a PDIP that can realize various types of gradation deformation processing by adaptively performing normal gradation processing and modified gradation processing in response to a user's request. subfield data obtained by displaying a video signal reconstructed with n subfield data on a panel or expanding and reconstructing n subfield data reconstructed using a lockup table to n + m subfield data at the user's request. By displaying on the panel, it is possible to provide a variety of forms of images having a self-directed feature.

Description

Adaptive Data Interface Device in PDPD

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data interface in a PDP TV, and more particularly, to an adaptive data interface device in a PD, which is suitable for realizing various gradation representations meeting user demands.

In general, in PDP TV, an analog video signal of a broadcast channel that is tuned and input is set to n bits (for example, 6 bits for RGB and 8 bits for 256) based on a predetermined sampling clock. The video data of one field is reconstructed into a plurality of subfields (i.e., six subfields, eight subfields, etc.) for gradation processing on the converted digital data.

That is, the video data of one field is reconstructed into N subfields whose holding period (i.e., the light emission period of the unit cell) T becomes shorter from the upper bit MSB to the lower bit LSB. Long means that there are many sustain pulses, which means that the luminance level is high. In other words, by decreasing the number of discharge sustain pulses in the order of the lowest subfield in which the LSB data is written in the highest subfield in which the MSB data is written, the gray scale processing is performed in the total discharge sustain period in accordance with the combination thereof.

On the other hand, users tend to enjoy a video display having self-desired characteristics through various types of gradation transformation processing. For this purpose, in PDP TV, various types of gradations other than single gradation (64 gradation, 256 gradation, etc.) processing are performed. Gradient deformation processing (i.e., adaptive processing of multiple gradations) is required, but this situation is not currently considered at all.

SUMMARY OF THE INVENTION The present invention has been made in view of the foregoing, and is an adaptive data interface device in PDIP capable of realizing various types of gradation deformation processing by adaptively performing normal gradation processing and modified gradation processing in response to a user request. The purpose is to provide.

In order to achieve the above object, the present invention, by addressing the digital data A / D converted and reconstructed into the sub-field data to the write electrode of the panel through the data driver, and applying a corresponding discharge sustain pulse to the scan / sustain electrode A data interface apparatus of a PDTV for displaying an arbitrary broadcast video signal on the panel, comprising: first data rearrangement means for reconstructing A / D-converted n-bit input digital data into n subfield data; a lookup table having n + m subfield data corresponding to each of the n subfield data; Second data rearrangement means for expanding and converting the n subfield data reconstructed from the A / D converted n-bit input digital data into corresponding n + m subfield data using the lookup table; Means for providing, in the normal mode, the reconstructed n subfield data provided by the first data rearrangement means to the data driver; Means for providing, to the data driver, the extended modified n + m subfield data provided by the second data rearrangement means in a modification mode according to a user's request; And generating a discharge sustain pulse corresponding to the reconstructed n subfields in the normal mode and applying the discharge sustain pulse to the scan / hold electrode, and converting the corresponding n + m subfields in the deformation mode. Provided is an adaptive data interface device in PDPD comprising scan driver means for generating a discharge discharge pulse to be applied to the scan / hold electrode.

1 is a block diagram of an adaptive data interface device in PDIP according to a preferred embodiment of the present invention;

2 illustrates an example of converting 6-bit data into 8-bit data according to an embodiment of the present invention;

3 illustrates an example of converting 8-bit data into 12-bit data according to another embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

102: A / D conversion block 104: control block

106,114: switching block 108,110: data rearrangement block

112: lookup table 116: memory block

118 scan / maintain drive block

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an adaptive data interface device in PDIP according to a preferred embodiment of the present invention, which includes an A / D conversion block (ADC) 102, a control block 104, and a first switching block 106. The first data rearrangement block 108, the second data rearrangement block 110, the lockup table 112, the second switching block 114, the memory block 116, and the scan / maintain drive block 118. Include.

Referring to FIG. 1, the A / D conversion block 102 samples an input video signal (an analog RGB signal through a predetermined sampling clock through a matrix block, not shown), and selects each n bit (for example, 64 gradations). 6 bits of RGB, and 8 bits of RGB for 256 gray levels), and the converted digital image data is connected to the fixed contact a of the first switching block 106.

Next, the control block 104 includes, for example, a microprocessor that performs overall operation control of the PDP TV, and includes: A / D conversion of analog video signals, adaptive gradation processing of digitally converted data, and memory. Control of data writing and reading, scanning / maintaining, etc., is performed at block 106.

Further, in the control block 104, when the modified gradation selection signal (operation signal) is applied for the adaptive gradation processing according to the present invention, a switching signal for the deformation gradation processing is generated on the line L13 in response thereto. To the first and second switching blocks 106 and 114, respectively. That is, the control block 104 generates a low level switching signal on the line L13 in the normal normal mode, and generates a high level switching signal on the line L13 in the deformation mode for the deformation gradation process according to the present invention. Occurs.

In this case, when the low level switching signal is provided through the line L13, the first and second switching blocks 106 and 114 are connected to the contacts ab and b'-a ', respectively, and the high level switching signal through the line L13. When is provided, the contacts ac and c'-a 'are connected respectively.

That is, the first switching block 106 provides n-bit (6-bit, 8-bit, etc.) of digital image data to the first data rearrangement block 108 by connecting the contacts ab in the normal mode. The contact ac is connected to the second data rearrangement block 110 by connecting the contact ac in the deformation mode for the processing of the gray scale.

On the other hand, in the first data rearrangement block 108, n-bit digital data provided through the contact ab of the switching block 106 in the normal mode is reconstructed into n sub-field data, for example, 6 bits. Reconstruct one field of data of digital data into six subfield data (MSB, M-1, M-2, M-3, M-4, LSB) or one field of 8-bit digital data. Minute data is reconstructed into eight subfield data (MSB, M-1, M-2, M-3, M-4, M-5, M-6, LSB), and the digital data thus reconstructed is a switching block. Is connected to the contact b 'of 114.

On the other hand, in the second data rearrangement block 110, n-bit digital data provided through the contact ac of the switching block 106 in the deformation mode according to the present invention, that is, in the mode for the deformation gradation processing. Is reconstructed into n subfield data, for example, 6-bit digital data is reconstructed into six subfield data as shown in FIG. 2A and shown in FIG. 2B corresponding to the reconstructed six subfield data. The modified subfield data (that is, eight subfield data) as described above is extracted from the lookup table 112 to perform subfield data conversion.

In this case, the retention period of the upper four subfield data in the converted subfield data may be set to a value obtained by adding up the retention periods of the upper two subfields of the six subfields before conversion and dividing by four. That is, in the transform mode, the second data rearrangement block 110 expands and converts six subfield data into eight subfield data, and the expansion and conversion of the subfield data are performed at the contact point c 'of the switching block 114. Connected.

In addition, when the input digital data is 8 bits of digital data, the second data rearrangement block 110 may include the input digital data reconstructed into eight subfield data as shown in FIG. 3A as an example. Using the transform subfield data pre-stored in 112, a makeover is transformed into 12 subfield data as shown in FIG. 3B. In this case, the retention period of the upper six subfield data in the converted subfield data may be set to a value obtained by dividing the retention periods of the upper two subfields of the eight subfields before conversion by six. That is, in the transform mode, the second data rearrangement block 110 expands and converts 8 subfield data into 12 subfield data, and the extended subfield data is converted into the contact point c 'of the switching block 114. Connected.

To this end, the lookup table 112 stores the modified eight subfield data corresponding to the six subfield data or the modified twelve subfield data corresponding to the eight subfield data. The transform subfield data is used when performing the transform mode according to the present invention.

On the other hand, in the second switching block 114, the serial image data reconstructed into the subfield data by the conventional method is connected by connecting the contacts b'-a 'based on the switching signal on the line L13 in the normal mode. 116) and reconstructed and extended-converted subfield data (i.e., six subfield data into eight subfield data) by connecting the contacts c'-a 'based on the switching signal on the line L13 in the deformation mode. Expansion-converted data or data in which eight sub-field data are extended-converted into 12 sub-field data, etc.) are provided to the memory block 116.

Accordingly, the memory block 116 has reconstructed subfield data (e.g., provided through the contact b'-a 'of the second switching block 114 in the normal mode based on the write address signal on the line L13. 6 sub-field data, 8 sub-field data, etc.), which are stored and provided through the contact c'-a 'of the second switching block 114 in the deformation mode (eg, 8 sub-field data, 12 sub-field data, etc.), and the stored sub-field data or the extended-converted sub-field data are read based on the read address signal on the line L13 and then transferred to the illustrated data driver. Thereby being displayed on the panel.

On the other hand, in the scan / maintain drive block 118, when a scan / maintenance control signal is applied from the control block 102, a direct current high voltage (for example, a direct current of 180V to 320V provided from a power supply means not shown) is shown. Power supply), a scan / hold drive pulse for scan / hold is adaptively generated and provided to a scan driver (not shown). That is, in the normal mode, the scan / maintenance driving pulse corresponding to the reconstructed subfield data is generated and provided to the scan driver, not shown, and in the deformation mode, the scan / maintenance pulse corresponding to the extended-converted subfield data is provided. Occurs and provides it to the scan driver.

As a result, the scan driver not shown will adaptively maintain the scan and discharge of the lines of the respective electrode lines in the panel corresponding to the normal mode or the deformation mode.

Therefore, on the panel (not shown), a normal image is displayed or a deformed image in which gray levels are converted to other forms according to a user's request is displayed, that is, a normal image without conversion in normal mode is displayed, and a gray level processing is performed in deformed mode. The transformed transformed image will be displayed.

As described above, according to the present invention, n + m subfield data are displayed on a panel of a video signal reconstructed with n subfield data, or when the user requests n subfield data reconstructed using a lockup table. By displaying the transformed subfield data, which have been expanded and converted on the panel, various types of images having self-desirable characteristics (or preferences) can be provided, thereby satisfying the user's self-desiring needs of users with various needs.

Claims (5)

The digital data reconstructed into sub-field data by A / D conversion is addressed to the write electrode of the panel through the data driver, and a corresponding discharge sustain pulse is applied to the scan / maintenance electrode, thereby generating an arbitrary broadcast video signal on the panel. A data interface device of a PDTV to be displayed on First data rearrangement means for reconstructing the A / D-converted n-bit input digital data into n subfield data; a lookup table having n + m subfield data corresponding to each of the n subfield data; Second data rearrangement means for expanding and converting the n subfield data reconstructed from the A / D converted n-bit input digital data into corresponding n + m subfield data using the lookup table; Means for providing, in the normal mode, the reconstructed n subfield data provided by the first data rearrangement means to the data driver; Means for providing, to the data driver, the extended modified n + m subfield data provided by the second data rearrangement means in a modification mode according to a user's request; And In the normal mode, a discharge sustain pulse corresponding to the reconstructed n subfields is generated and applied to the scan / hold electrode, and the transformed mode corresponds to the n + m subfields that have been expanded and deformed in the deformation mode. An adaptive data interface device in a PD, comprising scan driver means for generating a discharge sustain pulse and applying it to the scan / hold electrode. The adaptive data interface of the PDP of claim 1, wherein the second data rearrangement means extends and converts the six subfield data reconstructed using the lookup table into eight modified subfield data. Device. 3. The method of claim 2, wherein the sustain period of the top four subfield data in the extended-converted subfield data is set to a sum divided by 4 in a sum of the retention periods of the upper two subfields in the reconstructed six subfield data. Adaptive data interface device in PDIP. The adaptive data interface of the PDP of claim 1, wherein the second data rearrangement means extends and converts the 8 subfield data reconstructed using the lookup table into 12 modified subfield data. Device. 5. The method of claim 4, wherein the retention period of the upper six subfield data in the extended-converted subfield data is set to a sum divided by 6, the retention period of the upper two subfields in the reconstructed eight subfield data. Adaptive data interface device in PDIP.