KR20160009489A - display drive apparatus and method - Google Patents

display drive apparatus and method Download PDF

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Publication number
KR20160009489A
KR20160009489A KR1020150078252A KR20150078252A KR20160009489A KR 20160009489 A KR20160009489 A KR 20160009489A KR 1020150078252 A KR1020150078252 A KR 1020150078252A KR 20150078252 A KR20150078252 A KR 20150078252A KR 20160009489 A KR20160009489 A KR 20160009489A
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KR
South Korea
Prior art keywords
layer data
dimensional
classified
mixed
data
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Application number
KR1020150078252A
Other languages
Korean (ko)
Inventor
페이주안 리
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삼성전자주식회사
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Priority to CN201410338745.9 priority Critical
Priority to CN 201410338745 priority patent/CN104133647A/en
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority claimed from US14/801,236 external-priority patent/US9898804B2/en
Publication of KR20160009489A publication Critical patent/KR20160009489A/en

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02Details of power systems and of start or stop of display operation
    • G09G2330/021Power management, e.g. power saving
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2354/00Aspects of interface with display user

Abstract

According to the present invention, an apparatus for operating a display includes: a classification unit for classifying a plurality of layer data into two-dimensional data, three-dimensional data, and direct mixed layer data; a two-dimensional graphic processing unit for processing the two-dimensional layer data; a three-dimensional graphic processing unit for mixing the three-dimensional layer data; and a display controller for mixing the direct mixed layer data, the processed two-dimensional layer data, and the mixed three-dimensional layer data to generate a display interface.

Description

Display drive apparatus and method

The present invention relates to a display driving apparatus and a display driving method, and more particularly, to a display driving apparatus and a display driving method for providing a display interface of an electronic terminal.

With the development of information technology, various electronic terminals such as a mobile phone terminal, a smart TV, a personal computer (PC), a tablet PC, a game console, a personal digital assistant (PDA) It became essential in life. When using such an electronic terminal, people can usually communicate with the electronic terminal through the display interface of the electronic terminal or view the contents provided from the electronic terminal.

The display interface of the electronic terminal will be generated based on a plurality of layer data. For example, various devices that process layer data of an electronic terminal can generate a display interface by performing processes such as scaling, color format conversion, and blending on layer data. That is, in order to transmit various information through a display device, a technique of mixing and outputting layer data of a plurality of layers in one frame has been continuously studied.

The display driving apparatus and the display driving method according to the present invention are intended to provide a display driving apparatus and a display driving method for classifying and processing layer data so that memory use for a display can be efficiently used.

A display driving apparatus according to the present invention includes a classifier for receiving a plurality of layer data and classifying the layer data into at least one of two-dimensional layer data, three-dimensional layer data, and direct mixed layer data, A processing unit, a three-dimensional graphics processing unit for processing the three-dimensional layer data, and a display controller for mixing the direct mixed layer data, the processed two-dimensional layer data, and the processed three-dimensional layer data to generate a display interface .

The classifying unit classifies the received plurality of layer data into at least one of the two-dimensional layer data, the three-dimensional layer data, and the direct mixed layer data according to the characteristics of the layer data of the received plurality of layer data .

In addition, Based on at least one of the plurality of layer data, the three-dimensional layer data, and the direct mixed layer, based on the instruction information included in the received plurality of layer data and the characteristics of the received plurality of layer data. Data, and the like.

The two-dimensional layer data may include video layer data, and the video layer data may be subjected to color format conversion, scaling, rotation, cropping, cropping operation is performed.

The classifying unit may determine whether or not layer data that can be classified as the direct mixed layer data exists among the plurality of received layer data and if layer data that can be classified as the direct mixed layer data exists Layer layer data, the three-dimensional layer data, and the direct mixed layer data, and if there is no layer data that can be classified as the direct mixed layer data, And classifies the received plurality of layer data into at least one of the two-dimensional layer data and the three-dimensional layer data.

According to another aspect of the present invention, there is provided a display driving method including: a classifying unit for receiving and classifying a plurality of layer data; a two-dimensional graphic processing unit for processing the classified layer data; A display driving method of a display driving apparatus including a graphics processing unit and a display controller for generating a display interface, the method comprising: classifying the received plurality of layer data into at least one of two-dimensional layer data, three-dimensional layer data, And Generating the display interface based on the classified two-dimensional layer data, the classified three-dimensional layer data, and the classified direct mixed layer data.

In addition, the step of generating the display interface may include processing the classified two-dimensional layer data, processing the classified three-dimensional layer data, and processing the processed two-dimensional layer data, And mixing the direct mixing layer data.

Also, The classifying of the received plurality of layer data classifies the received plurality of layer data based on characteristics of each of the plurality of received layer data.

In addition, the step of generating the display interface may include transmitting the classified direct layer data to the display controller, transmitting the classified two-dimensional layer data to the two-dimensional graphic processing unit, And transmitting the layer data to the 3D graphic processing unit.

The display driving apparatus may further include a first buffer unit and a second buffer unit, and the generating the display interface may include transmitting the two-dimensional layer data processed by the two-dimensional graphics processing unit to the first buffer unit Dimensional graphics processing unit, storing the three-dimensional layer data mixed by the three-dimensional graphics processing unit in a second buffer unit, receiving the two-dimensional layer data processed from the first buffer unit by the display controller, Wherein the display controller is configured to receive the mixed 3D layer data from the second buffer unit and the display controller to mix the direct mixed layer data, the processed 2D layer data, and the mixed 3D layer data The method comprising the steps of:

According to the display driving apparatus and the display driving method of the present invention as described above, the layer data is classified according to the characteristics of the layer data used for creating the display interface, and the classified layer data is efficiently processed By performing the operation and efficiently using the memory for the display, the amount of power consumed in generating the display interface can be reduced.

1 is a block diagram showing a display driving apparatus according to an embodiment of the present invention.
2 is a block diagram showing a display driving apparatus according to another embodiment of the present invention for generating a display interface.
3 is a flowchart of a display driving method for generating a display interface of an electronic terminal according to an embodiment of the present invention.
4 is a flowchart illustrating a method of classifying a plurality of layer data according to an embodiment of the present invention.
5 is a flowchart illustrating a method of classifying a plurality of layer data according to another embodiment of the present invention.
FIG. 6 is a flowchart illustrating a method of setting a layer data category to be classified at the time of classification operation on layer data according to an embodiment of the present invention.
FIG. 7 is a flowchart illustrating a method of determining whether or not layer data that can be mixed directly by the display controller according to an exemplary embodiment of the present invention exists.
8 is a diagram illustrating a display system according to an embodiment of the present invention.
9 is a view showing an application example of various electronic products on which the display driving apparatus according to the embodiment of the present invention is mounted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated and described in detail in the drawings. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for similar elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged or reduced from the actual dimensions for the sake of clarity of the present invention.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises" or "having", etc. are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Also, the terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 is a block diagram showing a display driving apparatus 1 according to an embodiment of the present invention.

The display driver 1 includes a classifying unit 10, a two-dimensional graphic processor 20, a two-dimensional graphic processor 30, and a display controller 40 . The classification unit 10, the two-dimensional graphics processing unit 20 and the three-dimensional graphics processing unit 30 may be implemented by a general-purpose hardware processor such as a digital signal processor (DSP), a field programmable gate array (FPGA) , A special-purpose hardware processor such as a dedicated chip, and a computer program such as software. The display driver 1 may be included in the electronic terminal and may provide a display interface to the user. The electronic terminal may be a PC, a mobile phone terminal, a smart TV, a tablet PC, a game console, a PDA, A multimedia player, or an electronic device capable of providing a display interface.

The classifying unit 10 may classify the received layer data into at least one of two-dimensional layer data, three-dimensional layer data, and direct mixed layer data to receive the layer data and generate a display interface . In one embodiment, the display interface may include a display for displaying to a user and may include an interface for Human-Machine Interaction (HMI), or an interface for providing content provided by the electronic terminal to the user Interface. For example, the display interface may include user input received and processed by a display or electronic terminal that has been processed for visual display to the user. Based on the layer data, the display driving apparatus 1 can generate a display interface. In one embodiment, the layer data may include general purpose hardware processors such as digital signal processors (DSPs), field programmable gate arrays (FPGAs), etc., special purpose hardware processors and software such as dedicated chips, Or may be generated by at least one of the same computer programs. A display interface can be created by performing a process operation such as scaling, color format conversion, and mixing on the layer data.

The classifying unit 10 according to an embodiment of the present invention can classify the received layer data based on information on the received layer data. The classifying unit 10 may classify the layer data based on the processing operation on the received layer data. Furthermore, the classifier 10 may classify the received layer data based on display efficiency or power consumption due to processing operations.

The classifying unit 10 can classify a plurality of layer data appropriately based on at least one of the above-described classification criteria, and can perform an optimized processing operation on the classified layer data.

In one embodiment, the classifying unit 10 classifies the plurality of layers (at least one of the two-dimensional layer data, the three-dimensional layer data, and the direct mixed layer data) Data can be classified. The characteristics of the layer data may include characteristics associated with processing the layer data. For example, the classifying unit 10 classifies the layer data, which can be processed by the two-dimensional graphic processing unit 20, into two-dimensional layer data according to the characteristics of the layer data, Layer data that can be mixed by the layer-3 data can be classified into three-dimensional layer data. In addition, the classification unit 10 can classify the remaining unclassified layer data directly as mixed layer data.

The classification unit 10 transmits the classified two-dimensional layer data to the two-dimensional graphic processing unit 20, transmits the classified three-dimensional layer data to the three-dimensional graphic processing unit 30, To the controller (40).

The direct mixed layer data indicating the layer data directly mixed in the display controller 40 may be layer data transmitted to the display controller 40 without being mixed with other layer data in the 3D graphic processing unit 30. [ The fact that the display controller 40 performs the direct mixing operation on the mixed layer data directly means that the display controller 40 directly controls the mixing layer data, the layer data processed in the two-dimensional graphic processing section 20, 30 can be mixed.

The two-dimensional graphic processing unit 20 can process the classified two-dimensional layer data. In one embodiment, the two-dimensional layer data may include video layer data. Here, the video layer data may include layer data generated during reproduction of various videos such as a movie. In one embodiment, the two-dimensional graphic processing unit 20 performs processing operations such as cropping or rotation of the video layer data, scaling, and color format conversion. can do. The color format is classified according to the color coordinate. The color format is classified into various types such as RGB (red, green, blue), cyan-magenta-yellow (CMY), hue-saturation- have. The cropping processing operation may be an operation of displaying only a part of the whole image by growing it.

The three-dimensional graphic processing unit 30 can process the classified three-dimensional layer data. In one embodiment, the processing operation is an operation for 3D graphics processing, and may be an operation for implementing a 3D graphic by expressing a space based on depth information of a 2D graphic included in the layer data. Also, in one embodiment, the processing operations may include blending classified three-dimensional layer data, for example, processing operations may include general blending, alpha blending, shading, And may include mapping operations. In addition, the three-dimensional graphic processing unit 30 can perform a processing operation including an operation of mixing classified three-dimensional layer data and an operation such as color format conversion, cropping, and scaling as described above.

The three-dimensional layer data may include layer data that is not directly mixed by the display controller 30 among the layer data other than the two-dimensional layer data. For example, the layer data directly mixed by the display controller 40 can be determined according to the processing performance of the display controller 40. At this time, the layer data that can not be mixed directly by the display controller 40 can be classified into three-dimensional layer data. For example, the layer data that can not be directly mixed by the display controller 40 is the layer data having a color format that the display controller 40 can not support, the layer data having the color format that the display controller 40 can not support, And the layer data exceeding a predetermined data size that the display controller 40 can process.

In one embodiment, the received layer data may be layer data having a color format that the display controller 40 can not support. At this time, the classifying unit 10 can be mixed by the 3D graphic processing unit 30, and the display controller 40 can classify the layer data having a color format that is not supported by the display controller 40 into 3D layer data.

In another embodiment, the received layer data may exceed the size of the layer data that can be processed by the display controller 40. At this time, the classifying unit 10 classifies the layer data that does not match the size of the layer data that can be processed by the display controller 50 into three-dimensional layer data that can be mixed by the 3D graphic processing unit 30 can do. That is, when the display controller 40 does not have the size of layer data that can be processed, the layer data can be classified into three-dimensional layer data that can be mixed by the three-dimensional graphic processing unit 30. [

As another example, the received layer data may exceed the maximum number of overlapping words that can be processed by the display controller 40. [ For example, in the case where layer data for a maximum of five layers can be simultaneously mixed by the display controller 40, the classifying section 10 can classify the number of layers that can be simultaneously mixed, that is, Layer data for mixing by the three-dimensional graphic processing unit 30 can be categorized into three-dimensional layer data.

As described above, the layer data that can not be directly mixed by the display controller 40 can be classified according to the color format, the size, or the maximum number of layers of the received layer data, but this is merely an example and is not limited thereto. For example, the received layer data can be classified into layer data that can not be directly mixed by the display controller 40 based on the performance of the display controller 40. [

According to another embodiment, the classifying unit 10 may classify a plurality of layer data into a plurality of layer data according to characteristics of layer data associated with received layer data and instruction information used to designate layer data to be mixed by the 3D graphic processing unit 30 The layer data can be classified into at least one of two-dimensional layer data, three-dimensional layer data, and direct mixed layer data. The instruction information used for specifying the layer data to be mixed by the 3D graphic processing unit 30 may be included in the received layer data. For example, the classifying unit 10 may classify the classifying unit 10 into three-dimensional layer data based on the instruction information included in the received layer data to specify that the classifying unit 10 can be mixed by the 3D graphic processing unit 30. For example, first, the classifying unit 10 determines whether there is layer data including instruction information used for specifying layer data so that the layer data can be mixed by the 3D graphic processing unit 30 in the received layer data Or not. In addition, the layer data including the instruction information can be classified into three-dimensional layer data. The classifying section 10 can classify the layer data suitable for being processed by the two-dimensional graphic processing section 20 into two-dimensional layer data according to the characteristics of the layer data that remain unclassified, The layer data suitable for mixing by the layer 30 can be classified into three-dimensional layer data. Thereafter, the classifying unit 10 may classify the layer data not classified in the above classifying operation directly into mixed layer data. The detailed description of the layer data to be processed by the two-dimensional graphic processing section 20 and the layer data to be mixed by the three-dimensional graphic processing section 30 is similar to that described above, and is omitted in this specification.

As another embodiment of the present invention, the classifying section 10 is directly classified into mixed layer data for reducing the power consumption of the electronic terminal or for the purpose of the bandwidth saving system of the electronic terminal, It is possible to judge whether or not there is layer data that is suitable to be reproduced. When a part of the layer data can be directly mixed in the display controller 40, the amount of layer data in which the mixing operation is performed in the three-dimensional graphic processing unit 30 can be distributed to the display controller 40. [ Thus, layer data can be efficiently mixed. However, it may require a significant portion of the system bandwidth of the electronic terminal to transmit the direct mixing layer data classified by the classification section 10 to the display controller 40. [ Accordingly, the display controller 40 performs the mixing operation of the classified direct blend layer data, the two-dimensional layer data processed in the second graphic processing unit 20, and the three-dimensional layer data processed in the third graphic processing unit 30 A large amount of power can be consumed. Therefore, when the amount of layer data in which the mixing operation of the three-dimensional graphic processing unit 30 is performed is not large (for example, when there is no operation performed by the user, the screen of the display interface remains unchanged) ), The bandwidth required for transmitting the layer data that can be classified as the directly mixed layer data is equal to or greater than the reference value, the classifying unit 10 classifies the layer data directly into mixed layer data I can not.

In one embodiment, the classifying unit 10 can determine whether the frequency of the layer data received by the display controller 40 is lower than a predetermined frequency reference value. Based on the determination result, the classifying unit 10 classifies the layer data into two-dimensional layer data and three-dimensional layer data, or classifies layer data into two-dimensional layer data, three-dimensional layer data, Can be selected.

The front end device of the display controller 40 can provide the layer controller 40 with the layer data at a specific clock frequency. The frequency of the layer data received by the display controller 40 may indicate the frequency of interaction between the current user and the electronic terminal and that the higher the frequency, the more frequent the interaction between the current user and the electronic terminal It can mean. For example, when the frequency of the layer data received by the display controller 40 is lower than the frequency reference value, the classifying section 10 can classify the layer data into two-dimensional layer data and three-dimensional layer data. In another embodiment, when the frequency of the layer data received by the display controller 40 is higher than a predetermined frequency reference value, the classifying section 10 divides the layer data into two-dimensional layer data, three- .

In this way, when the frequency of the layer data received by the display controller 40 is lower than the frequency reference value, the display controller 40 outputs the direct mixed layer data, which can be transmitted from the classifying unit 10, It may not be classified separately. As a result, it is possible to reduce the power consumption due to the use of the system bandwidth in the direct mixed layer data transmission. When the frequency of the layer data received by the display controller 40 is higher than the frequency reference value, the mixed layer data is directly processed in the two-dimensional graphics processing section 20 and the three-dimensional graphics processing section 30 by the display controller 40 It is possible to perform a direct mixing operation with the other layer data. Accordingly, the amount of layer data to be mixed in the three-dimensional graphic processing unit 30 can be distributed to perform an efficient mixing operation on the layer data. The 3D controller 30 may perform an operation for mixing the 3D layer data without performing an operation for blending the layer data in the display controller 40. [

The classifying unit 10 may determine whether the resolution of the image corresponding to the layer data that can be directly mixed in the display controller 40 exceeds a preset resolution reference value. The image corresponding to the layer data may be the resolution of the frame image generated by mixing the layer data. Based on the determination result, the classifying unit 10 classifies the layer data into two-dimensional layer data and three-dimensional layer data, or classifies the layer data into two-dimensional layer data, three-dimensional layer data, and direct mixed layer data Can be selected.

If the resolution of the image corresponding to the layer data that can be directly mixed in the display controller 40 exceeds the resolution reference value, a large part of the system bandwidth is required to transmit the directly mixable layer data to the display controller 40 May be required. Accordingly, in one embodiment, when the resolution of the image corresponding to the layer data that can be classified as the directly mixed layer data exceeds the predetermined resolution reference value, the classifying unit 10 divides the layer data into two- Data. In another embodiment, when the resolution of the image corresponding to the layer data that can be mixed by the display controller 40 does not exceed the predetermined resolution reference value, the classifying section 10 divides the layer data into two-dimensional layer data, 3 Dimensional layer data and direct mixed layer data. If the image corresponding to the layer data that can be classified as the directly mixed layer data exceeds the resolution reference value, the classifying unit 10 may not classify the layer data directly as mixed layer data, Likewise, power consumption due to the use of the system bandwidth of the electronic terminal can be reduced when the direct mixed layer data is transmitted.

 If the image corresponding to the layer data that can be classified as the directly mixed layer data does not exceed the resolution reference value, the classifying unit 10 classifies the layer data directly into mixed layer data, Lt; / RTI > The display controller 40 can perform a direct mixing operation with the direct mixed layer data, the two-dimensional graphics processing unit 20, and other layer data processed in the three-dimensional graphics processing unit 30. [ Accordingly, the amount of layer data to be mixed in the three-dimensional graphic processing unit 30 can be distributed to perform an efficient mixing operation on the layer data.

2 is a block diagram showing a display driving apparatus 1 'according to another embodiment of the present invention for generating a display interface.

2, the display driving apparatus 1 'includes a classification unit 10, a two-dimensional graphics processing unit 20, a three-dimensional graphics processing unit 30, a display controller 40, an overlay buffer 50, (60). The configuration of each of the classification unit 10, the two-dimensional graphics processing unit 20, the three-dimensional graphics processing unit 30 and the display controller 40 is the same as that of FIG. 1, We will focus on other configurations.

The two-dimensional graphic processing unit 20 can process the classified two-dimensional layer data. In the process of the two-dimensional graphic processing unit 20, a color format conversion (for example, conversion from an RGB color space to a YCrCb color space), scaling (expansion or expansion) to two-dimensional layer data classified as an embodiment, Reduction), rotation, and cropping may be performed. Thereafter, the two-dimensional graphic processing unit 20 may store the processed layer data in the overlay buffer 50. [ The two-dimensional graphics processing unit 20 may include a general two-dimensional graphics accelerator 25 or a general scaler (not shown).

The three-dimensional graphic processing unit 30 may mix the classified three-dimensional layer data. As described above, in one embodiment, the three-dimensional graphic processing unit 30 can mix layer data that can not be mixed directly by the display controller 40. In addition, the 3D graphic processing unit 30 may mix a plurality of layer data to generate layer data for one layer. In addition, the layer data of one layer generated through the mixing operation can be stored in the frame buffer 60. Further, the three-dimensional graphic processing unit 30 may include a general three-dimensional graphics accelerator 35.

The display controller 40 receives the direct mixed layer data classified from the classification section 10, receives the processed two-dimensional layer data from the overlay buffer 50, and outputs the mixed three-dimensional layer data Lt; / RTI > However, in an embodiment, when the classifying unit 10 classifies a plurality of layer data only into two-dimensional layer data and three-dimensional layer data, the display controller 40 controls the two-dimensional layer Data and the mixed three-dimensional layer data received from the frame buffer 60 can be received.

The display controller 40 may mix the directly mixed layer data, the processed two-dimensional layer data, and the mixed three-dimensional layer data to create a display interface. Specifically, the display controller 40 converts the two-dimensional layer data processed by the two-dimensional graphics processing section 20, the three-dimensional layer data mixed from the three-dimensional graphics processing section 30, You can mix layer data. Further, in the course of performing the mixing operation, the directly mixed layer data may be pre-processed, for example, processing operations such as reduction or expansion for the mixed layer data directly in accordance with the processing performance of the display controller 40 Can be performed in advance. In this way, the display controller 40 can mix a plurality of layer data to generate layer data of one layer. The generated display interface can be output on the screen of the electronic terminal. In one example, the display controller 40 may be implemented by a display adapter (video adapter). Also, the display controller 40 may correspond to a Fully Interactive Mobile Display (FIMD).

According to an embodiment of the present invention, in order to generate the display interface of the electronic terminal, the layer drive data can be appropriately classified using the display drive device. Through this, it is possible to fully utilize the performance of various apparatuses for processing layer data, and to improve display efficiency.

3 is a flowchart of a display driving method for generating a display interface of an electronic terminal according to an embodiment of the present invention.

Referring to FIG. 3, the layer data used for generating the display interface is classified into at least one of two-dimensional layer data, three-dimensional layer data, and direct mixed layer data (S10). The display interface may include an interface for HMI (Human Machine Interation) provided from the electronic terminal or an interface for providing contents to the user. Here, the layer data can be used to create a display interface. The display interface can be created by performing scaling, color format conversion, and mixed operation of layer data on the layer data.

According to an embodiment of the present invention, the layer data can be classified based on the information associated with the layer data. Alternatively, the layer data may be classified in consideration of the performance of the apparatus for performing a processing operation corresponding to the layer data. Furthermore. You can choose how to classify the layer data by considering display efficiency or power consumption. In this manner, the layer data is properly classified and the processing operation optimized for the layer data can be performed.

The layer data may be classified into at least one of two-dimensional layer data, three-dimensional layer data, and direct mixed layer data according to characteristics of the layer data (S10). Wherein the characteristics of the layer data may include characteristics associated with performance of the device for processing the layer data. For example, in accordance with the characteristics of the layer data, what is processed by the two-dimensional graphic processing unit in the layer data can be classified into two-dimensional layer data. It is possible to classify what is mixed from the three-dimensional graphic processing unit into three-dimensional layer data. In addition, the remaining unclassified layer data can be directly classified as mixed layer data.

In another embodiment, the layer data processed by the two-dimensional graphic processing unit may be classified into two-dimensional layer data, the layer data blended by the three-dimensional graphics processing unit may be classified into three-dimensional layer data, Layer data that can not be directly mixed can be classified into three-dimensional layer data.

In another embodiment, the layer data is classified into at least one of two-dimensional layer data, three-dimensional layer data, and direct mixed layer data according to the instruction information designating the layer data to be mixed by the three- (S10). The instruction information is for indicating layer data processed by the three-dimensional graphic processing unit and may be included in the layer data. In the case of the layer data including the instruction information, the layer data including the instruction information can be classified into the three-dimensional layer data.

In one embodiment, first, it is possible to determine whether or not instruction information indicating that the layer data is layer data to be mixed by the three-dimensional processing section is included in the layer data. When the layer data includes the instruction information, the layer data can be classified into the three-dimensional layer data. The layer data that can be processed by the two-dimensional graphic processing unit can be classified into two-dimensional layer data according to the characteristics of the layer data that is not classified next, and the layer data that can be mixed by the three- It can be classified into three-dimensional layer data.

Unclassified layer data can be classified directly as mixed layer data.

For example, video layer data can be classified into two-dimensional layer data that can be processed by a two-dimensional graphics processing unit, layer data that can not be directly mixed by a display controller are classified into three- Can be mixed by a processing section. Alternatively, the layer data other than the two-dimensional layer data and the three-dimensional layer data may be directly classified as mixed layer data. The detailed description of the layer data that can be processed by the two-dimensional graphic processing unit and the layer data that can be mixed by the three-dimensional graphics processing unit will be omitted.

The two-dimensional graphic processing unit can process the classified two-dimensional layer data (S20). In the process of processing the two-dimensional layer data, at least one of color format conversion, scaling, rotation, and cropping processing may be performed on the two-dimensional layer data. The layer data processed by the two-dimensional graphics processing unit can be stored in the overlay layer buffer. In the process of processing two-dimensional layer data, a two-dimensional graphics accelerator or a general scaler can be used to process two-dimensional layer data.

The three-dimensional graphic processing unit may mix the classified three-dimensional layer data (S30). In one embodiment, the three-dimensional graphics processing unit may mix layer data that can not be mixed directly in the display controller. For example, the 3D graphic processing unit can generate layer data of one layer by mixing layer data of a plurality of layers. The generated layer data of one layer can be stored in the frame buffer. In this process, a 3D graphics accelerator can be used to mix 3D layer data.

The display controller may mix the directly mixed layer data, the processed two-dimensional layer data, and the mixed three-dimensional layer data to create a display interface (S40). The display controller can mix the layer data processed by the two-dimensional graphics processing unit and the three-dimensional graphics processing unit with the classified direct mixed layer data. Furthermore, in the mixing process, the directly mixed layer data may be pre-processed, and processing such as reduction or expansion, for example, may be performed by the display controller directly on the mixed layer data in advance. As described above, the display controller can mix a plurality of layer data to generate layer data of one layer. The display interface obtained through such a method can be output to the screen of the electronic terminal. For example, a display adapter (ex: video adapter) can directly mix blend layer data, processed two-dimensional layer data, and mixed three-dimensional layer data. In addition, Fully Interactive Mobile Display (FIMD) can directly mix mixed layer data, processed two-dimensional layer data, and mixed three-dimensional layer data.

4 is a flowchart illustrating a method of classifying a plurality of layer data according to an embodiment of the present invention.

Referring to FIG. 4, it is determined whether the layer data is processed by the two-dimensional graphic processing unit (S111). The layer data processed by the two-dimensional graphic processing unit may include video layer data. The video layer data may include layer data generated during execution of various video files such as movies. Therefore, it is required to perform color format conversion, scaling, conversion, and cropping operations on the video layer data, and performs the above operation based on the processing performance of the two-dimensional graphics processing unit, It can be discriminated as layer data to be processed.

If it is determined that the layer data is processed by the two-dimensional graphics processing unit (YES in S111), the layer data is classified into two-dimensional layer data so that the two-dimensional graphics processing unit can process the layer data (S112 ). If it is determined that the layer data can not be processed by the 2D graphic processing unit (NO in S111), it is determined whether the layer data can be mixed by the 3D graphic processing unit (S113). The three-dimensional layer data mixed by the three-dimensional graphic processing unit includes the two-dimensional layer data and the layer data which can not be directly mixed by the other display controller. Therefore, the 3D graphics processing unit may perform better in mixing the layer data than the display controller. For example, the layer data that can be directly mixed by the display controller is determined according to the processing performance of the display controller, and the layer data that can not be directly mixed by the display controller can be determined as the three-dimensional layer data. The layer data that can not be directly mixed by the display controller are layer data having a color format not supported by the display controller, layer data including the data when the number of data superimposed on the same pixel exceeds a reference value, Layer data having a data size that can not be processed by the display controller, and layer data requiring mixing performance that is higher than the mixing performance of the display controller.

Specifically, the color format of the layer data may not be supported by the display controller. That is, the display controller can not process the layer data having the color format that it does not support. Therefore, the layer data can be classified as layer data to be mixed by the three-dimensional graphic processing unit. When the number of data superimposed on the same pixel in the process of performing the superimposing operation of the layer data exceeds the reference value and corresponds to the layer data including the data, . ≪ / RTI > The layer data having a data size that can not be processed by the display controller based on the size of the layer data that can be processed by the display controller can be classified into data to be mixed by the 3D graphics processing unit.

In one embodiment, layer data for up to five layers can be mixed by the display controller at the same time. Layer data exceeding the maximum number of layers can be classified into layer data to be mixed by the three-dimensional graphic processing unit. However, the present invention is not limited to this, and the layer data that can be mixed by the display controller may vary according to the performance of the display controller.

If it is determined that the layer data is mixed by the 3D graphic processing unit (YES in S113), the layer data is classified into three-dimensional layer data in order to process the layer data using the 3D graphic processing unit (S114).

If it is determined that the layer data can not be mixed by the 3D graphic processing unit (NO in S113), the layer data is directly classified into mixed layer data in order to process the layer data using the display controller (S115). However, the above process may further include various processes as an embodiment. For example, it is possible to determine whether the layer data can be mixed directly from the display controller in step S113. If it is determined that the layer data is layer data that can be directly mixed by the display controller, the layer data can be directly classified into mixed layer data to directly mix the layer data using the display controller (S114). If it is determined that the layer data can not be directly mixed by the display controller, the 3D data may be classified into three-dimensional graphic data in order to process the layer data in step S115.

For example, the layer data that can be directly mixed by the display controller includes layer data having a color format supported by the display controller, layer data including the data in the case where the number of data superimposed on the same pixel does not exceed the reference value Layer data, layer data of a size supported by the display controller, and layer data requiring performance matching the performance of the display controller. Specifically, the color format of the layer data may not be supported by the display controller. That is, the display controller can not process the layer data having the color format that it does not support. Therefore, the layer data can be classified as layer data to be mixed by the three-dimensional graphic processing unit. The layer data including the data in the case where the number of data superimposed on the same pixel does not exceed the reference value in the process of performing the superimposing operation of the layer data can be mixed by the display controller. According to the size of the layer data that can be mixed by the display controller (the minimum width of the layer data is 64 pixels or more), the layer data having a size that can be processed by the display controller is divided into layers Data. ≪ / RTI > In one embodiment, layer data for up to five layers can be mixed by the display controller at the same time. Layer data that does not exceed the maximum number of layers that can mix layer data can be classified as layer data directly mixed by the display controller.

5 is a flowchart illustrating a method of classifying a plurality of layer data according to another embodiment of the present invention.

Referring to FIGS. 1 and 5, a plurality of layer data can be classified according to the indication information indicating the 3D layer data mixed by the 3D graphic processing unit and the characteristics of each layer data, as described in FIG. 3 .

It is determined whether or not layer data including the instruction information designating the layer data to be mixed by the 3D graphic processing unit exists (S126). When the layer data can be mixed by the 3D graphic processing unit, the layer data may include the instruction information. If layer data including the instruction information exists (YES in S126), the layer data including the instruction information is classified into three-dimensional layer data (S124).

If the layer data including the instruction information does not exist (NO in S126), it is determined whether or not the layer data can be processed by the two-dimensional graphics processing unit (S121). When the layer data can be processed by the two-dimensional graphic processing unit (YES in S121), the layer data is classified into two-dimensional layer data so that the layer data can be processed by the two-dimensional graphics processing unit (S122). Alternatively, if the layer data can not be processed by the two-dimensional graphic processing unit (NO in S121), the layer data is classified into three-dimensional layer data, and it is determined whether or not the layer data can be mixed by the three-dimensional graphic processing unit (S123 ). Since the contents of the layer data that can be mixed by the three-dimensional graphic processing unit have been described above, the details will be omitted. If it is determined that the layer data can not be mixed by the 3D graphic processing unit (NO in S123), the layer data is directly classified into mixed layer data so that the layer data can be directly mixed by the display controller (S125).

FIG. 6 is a flowchart illustrating a method of setting a layer data category to be classified at the time of classification operation on layer data according to an embodiment of the present invention.

Referring to FIGS. 1 and 6, it can be determined whether or not the layer data that can be directly mixed by the display controller is directly classified into mixed layer data (S200). The classification section 10 of FIG. 1 classifies the direct mixing layer data that can be directly mixed by the display controller 40 and performs a mixing operation on the mixed layer data directly at the display controller 40 so that the system bandwidth The classification unit 10 transmits the direct mixed layer data which is a part of the layer data to the display controller 40 and the display controller 40 directly mixes the mixed layer data Dimensional graphics processing unit 30 and the other layer data processed by the two-dimensional graphics processing unit 20 and the three-dimensional graphics processing unit 30, the amount of data to be mixed in the three-dimensional graphics processing unit 30 can be distributed to the display controller, Can be improved.

However, while the classifier 10 occupies a significant portion of the system bandwidth of the electronic terminal for transmission of layer data that can be classified as mixed layer data directly to the display controller 40, the display controller consumes a significant amount of power can do. Therefore, when the data processing amount of the three-dimensional graphic processing unit 30 is not large or occupies a large part of the system bandwidth of the electronic terminal for the transmission of layer data that can be classified as mixed layer data directly, the display controller 40 The operation of directly blending the layer data may not be performed. Layer data that can be classified into the direct mixed layer data are directly classified into mixed layer data and the mixed layer data is directly output by the display controller 40 to the two- And may be directly mixed with the layer data processed in the graphic processing unit 30. [ Accordingly, when the system bandwidth of the electronic terminal is less than the reference value or when the data processing amount of the three-dimensional graphic processing unit 30 is equal to or larger than the reference value when the layer data that can be classified as the directly mixed layer data is transmitted to the display controller 40 The display controller 40 can directly determine that the layer data that can be classified as mixed layer data can be directly mixed with the layer data processed in the two-dimensional graphics processing unit 20 and the three-dimensional graphics processing unit 30, The classifying unit 10 may classify the layer data into two-dimensional layer data, three-dimensional layer data, and direct mixed layer data (S210). However, when transmitting the layer data directly mixable by the display controller 40 to the display controller 40, the system bandwidth of the electronic terminal is used in excess of the reference value, or the data processing amount of the 3D graphic processing unit 30 is If it is less than the reference value, the display controller 40 determines that the mixed layer data can not be directly mixed, and the classifying unit 10 classifies the layer data into two-dimensional layer data and three-dimensional layer data (S220).

In one embodiment, when the display controller 40 determines that the frequency of the layer data received from the electronic terminal is higher than a predetermined frequency reference value, It can be determined that the data throughput is equal to or greater than the reference value. If the frequency of the received data is lower than the predetermined frequency reference value, it can be determined that the data throughput is less than the reference value.

In an embodiment of the present invention, as a method for determining the degree of use of system bandwidth of an electronic terminal when transmitting mixed layer data directly to the display controller 40, Based on whether the resolution of the corresponding image exceeds the set resolution reference value. For example, when the resolution corresponding to the layer data that can be classified as the directly mixed layer data exceeds the preset resolution reference value, the layer data that can be classified as the directly mixed layer data is transmitted to the display controller 40, It can be determined that the system bandwidth of the terminal exceeds the reference value. When the resolution of the image corresponding to the layer data that can be classified as the directly mixed layer data does not exceed the preset resolution reference value, the layer data that can be classified as the directly mixed layer data is transmitted to the display controller 40 It can be determined that the system bandwidth of the electronic terminal required at the time is less than the reference value

FIG. 7 is a flowchart illustrating a method for determining whether layer data that can be classified as direct mixed layer data can be directly mixed by the display controller according to an embodiment of the present invention.

Referring to FIG. 7, it is determined whether there is layer data including a color format that can be supported by the display controller in order to determine whether or not there is direct mixed layer data that can be directly mixed by the display controller among a plurality of layer data (S300). When layer data including the color format exists, layer data including layer data superimposed on the same pixel with respect to the layer data including the color format, when layer data superimposed on the same pixel exceeds a reference value (S310). It is determined whether or not the layer data overlapping the same pixel does not exceed the reference value and the layer data including such data is layer data having a size that can be processed by the display controller in operation S330. When there is layer data having a size that can be processed by the display controller, it is determined that the directly mixed layer data exists, and a plurality of layer data is classified into two-dimensional layer data, three-dimensional layer data, can do. However, if layer data conforming to steps S300 to S320 does not exist, it is determined that no directly mixed layer data exists, and a plurality of layer data can be classified into two-dimensional layer data and three-dimensional layer data. However, this is an embodiment, and steps S300 to S320 may be performed in various orders to determine whether or not there is direct mixed layer data.

8 is a diagram illustrating a display system according to an embodiment of the present invention.

8, the display system 1000 may include a processor 1020, a display device 1050, a peripheral device 1030, and a memory 1040, which are electrically connected to the system bus 1010.

The processor 1020 controls input / output of data of the peripheral device 1030, the memory 1040 and the display device 1050, and can perform image processing of image data transmitted between the devices. The image data may include the layer data described above with reference to FIGS.

The display device 1050 includes a display panel DP and a display driver DDRV and supplies the image data applied through the system bus 4010 to a frame memory included in the display driver DDRV Stored in the line memory, and displayed on the display panel DP. The display driver DRVC may be the display driver 1 according to the embodiments of the present invention in Figs.

The peripheral device 1030 may be a device for converting a moving image or a still image, such as a camera, a scanner, a webcam, etc., into an electrical signal. Image data obtained through the peripheral device 1030 may be stored in the memory 1040 or displayed on a panel of the display device 1050 in real time. Memory 4040 may include volatile memory elements such as DRAMs and / or non-volatile memory elements such as flash memory. The memory 1040 is comprised of DRAM, PRAM, MRAM, ReRAM, FRAM, NOR flash memory, NAND flash memory, and Fusion flash memory (e.g., SRAM buffer and NAND flash memory and NOR interface logic combined memory) . Memory 1040 may store image data obtained from peripheral device 1030 or may store processed image signals in processor 1020. [

The display system 1000 according to an embodiment of the present invention may be provided in an electronic product such as a tablet PC, a TV, or the like. However, the present invention is not limited thereto. The display system 1000 may be provided in various types of electronic products for displaying images.

9 is a view showing an application example of various electronic products on which a display driving device according to an embodiment of the present invention is mounted.

The display device 2000 according to the present invention includes the display drive device 1 of Figs. 1 and 2, and can be employed in various electronic products. The ATM 2100, the elevator 2300, the smart watch 2400, the tablet PC 2500, and the like, as well as the TV 2100, the ATM 2200, ), A PMP 2600, an e-book 2700, and a navigation system 2800. The display device 2000 may also be mounted on various wearable electronic devices.

The electronic terminal according to an embodiment of the present invention can appropriately classify layer data and improve display efficiency by using a display driving method for generating a display interface.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (10)

  1. A classifier for receiving a plurality of layer data and classifying the layer data into at least one of two-dimensional layer data, three-dimensional layer data, and direct mixed layer data;
    A two-dimensional graphic processing unit for processing the two-dimensional layer data;
    A three-dimensional graphic processing unit for processing the three-dimensional layer data; And
    And a display controller for mixing the direct mixed layer data, the processed two-dimensional layer data, and the processed three-dimensional layer data to create a display interface.
  2. The method according to claim 1,
    Wherein,
    And classifies the received plurality of layer data into at least one of the two-dimensional layer data, the three-dimensional layer data, and the direct mixed layer data according to the characteristics of the layer data of the received plurality of layer data drive.
  3. The method according to claim 1,
    Wherein,
    Based on at least one of the plurality of layer data, the three-dimensional layer data, and the direct mixed layer, based on the instruction information included in the received plurality of layer data and the characteristics of the received plurality of layer data. And the data is classified into at least one of the data and the data.
  4. The method according to claim 1,
    Wherein the two-dimensional layer data includes video layer data,
    Wherein the video layer data is subjected to at least one of color format conversion, scaling, rotation, and cropping operations by the two-dimensional graphics processing unit. Device
  5. The method according to claim 1,
    Wherein,
    From among the received plurality of layer data,
    Whether or not layer data that can be classified as the direct mixed layer data exists,
    Classifying the received plurality of layer data into at least one of the two-dimensional layer data, the three-dimensional layer data, and the direct mixed layer data when layer data that can be classified as the direct mixed layer data exists,
    And classifies the received plurality of layer data into at least one of the two-dimensional layer data and the three-dimensional layer data when layer data that can be classified into the direct mixed layer data does not exist.
  6. And a display controller for generating a display interface and a display controller for generating a display interface, wherein the display controller is configured to receive a plurality of layer data and classify the plurality of layer data, a two-dimensional graphic processor for processing the classified layer data, A display driving method of a display driving apparatus,
    Classifying the received plurality of layer data into at least one of two-dimensional layer data, three-dimensional layer data, and direct mixed layer data; And
    And generating the display interface based on the classified two-dimensional layer data, the classified three-dimensional layer data, and the classified direct mixed layer data.
  7. The method according to claim 6,
    Wherein the generating the display interface comprises:
    Processing the classified two-dimensional layer data;
    Processing the classified three-dimensional layer data; And
    And mixing the processed two-dimensional layer data, the processed three-dimensional layer data, and the direct mixed layer data.
  8. The method according to claim 6,
    Wherein the step of classifying the plurality of received layer data comprises:
    And classifies the received plurality of layer data based on characteristics of each of the plurality of received layer data.
  9. The method according to claim 6,
    Wherein the generating the display interface comprises:
    Transmitting the classified direct mixing layer data to the display controller;
    Transmitting the classified two-dimensional layer data to the two-dimensional graphic processing unit; And
    And transmitting the classified three-dimensional layer data to the three-dimensional graphic processing unit.
  10. 10. The method of claim 9,
    The display driving apparatus may further include a first buffer unit and a second buffer unit,
    Wherein the generating the display interface comprises:
    Storing the two-dimensional layer data processed by the two-dimensional graphic processing unit in a first buffer unit;
    Storing the 3D layer data mixed by the 3D graphic processing unit in a second buffer unit;
    Receiving the two-dimensional layer data processed from the first buffer unit by the display controller;
    The display controller receiving the mixed 3D layer data from the second buffer unit; And
    And mixing the direct mixed layer data, the processed two-dimensional layer data, and the mixed three-dimensional layer data with the display controller.
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