KR101863944B1 - Data transmitting apparatus, data receiving apparatus, methods for transmitting and receiving data - Google Patents

Abstract

A data transmitting apparatus, a data receiving apparatus, a data transmitting method, and a receiving method are disclosed. An apparatus for transmitting data according to an exemplary embodiment of the present invention includes an enable signal generator for generating a data enable signal divided into a blank section and an active section; A synchronization signal generator for generating a synchronization signal in which a transition interval is formed within the blank interval; An additional data processing unit for loading additional data in a stapler section area corresponding to the active section of the stapler section in the synchronization signal; And an interface unit transmitting the synchronization signal and the data enable signal to which the additional data is loaded, to the data receiving apparatus.

Description

Technical Field [0001] The present invention relates to a data transmitting apparatus, a data receiving apparatus, a method for transmitting additional data,

The present invention relates to a data transmitting apparatus, a data receiving apparatus, an additional data transmitting method, and a receiving method, and more particularly to a data transmitting apparatus, a data receiving apparatus, And a receiving method.

In the era of high-definition digital broadcasting, there is a strong interest in transmitting and receiving large-capacity video data. Furthermore, with the emergence of new technologies such as 3D TVs and multi-view TVs, there is a growing need for a technique for transmitting and receiving video data and additional information with a much larger capacity than conventional video display means.

The most reliable method for transmitting and receiving large amount of data is to increase the data transmission bandwidth. However, expanding the physical interface can be costly and requires interfacing with older devices.

Therefore, it is necessary to economically and efficiently transmit and receive large capacity data by using the existing interface as it is.

The present invention has been made in view of the above-mentioned needs, and an object of the present invention is to provide a data transmitting apparatus, a data receiving apparatus, an additional data transmitting method and a receiving method which can transmit or receive additional data in addition to image data.

According to an aspect of the present invention, there is provided a data transmitting apparatus including: an enable signal generator for generating a data enable signal divided into a blank section and an active section; A synchronization signal generator for generating a synchronization signal in which a transition interval is formed within the blank interval; An additional data processing unit for loading additional data in a stapler section area corresponding to the active section of the stapler section in the synchronization signal; And an interface unit transmitting the synchronization signal and the data enable signal to which the additional data is loaded, to the data receiving apparatus.

The synchronization signal generation unit may include: a vertical synchronization signal generation unit for generating a vertical synchronization signal; And a horizontal synchronous signal generator for generating a horizontal synchronous signal, wherein the additional data processor is operable to receive the additional data in at least one of the vertical synchronous signal generator and the horizontal synchronous signal generator, Lt; / RTI >

And a data stream generating unit for generating a data stream to be transmitted to the data receiving apparatus, wherein the data stream includes information informing of loading of the additional data, and the interface unit transmits the data stream to a data receiving apparatus As shown in FIG.

Wherein the additional data processing unit further loads the additional data in a field signal area corresponding to an active section of the data enable signal in the field signal, The interface unit may further transmit the field signal to the data receiving apparatus.

The additional data may include at least one of caption data, GUI (Graphic User Interface) information, depth information, scaling information, and resolution information.

According to another aspect of the present invention, there is provided a data receiving apparatus including an interface for receiving a data stream, a sync signal, and a data enable signal; A detecting unit for detecting additional data from an area corresponding to an active period of the data enable signal from among the stapler sections in the synchronization signal; And a data processing unit configured to form screen data according to the additional data and the data stream.

The synchronization signal may include a vertical synchronization signal and a horizontal synchronization signal, and the detection unit may detect the additional data from a stable interval region of at least one of the vertical synchronization signal and the horizontal synchronization signal.

The additional data may include at least one of caption data, GUI (Graphic User Interface) information, depth information, scaling information, and resolution information.

According to another aspect of the present invention, there is provided a method of transmitting additional data, the method including generating a data enable signal divided into a blank interval and an active interval; Generating a synchronization signal in which a transition interval is formed within the blank interval; Loading additional data in a stapler section area corresponding to the active section of the stapler section in the synchronization signal; And transmitting the synchronization signal and the data enable signal loaded with the additional data to the data receiving apparatus.

The step of generating the synchronization signal may include: generating a vertical synchronization signal; And generating a horizontal synchronizing signal, wherein the additional data may be loaded in at least one of the vertical synchronizing signal and the horizontal synchronizing signal.

And generating a data stream to be transmitted to the data receiving apparatus, wherein the data stream includes information indicating a fact of loading of the additional data, and the step of transmitting the signal includes transmitting the data stream to the data And can further transmit to the receiving apparatus.

Wherein the step of loading the additional data further includes loading the additional data into a field signal area corresponding to an active period of the data enable signal in the field signal, The step of transmitting the signal may further transmit the field signal to the data receiving apparatus.

The additional data may include at least one of caption data, GUI (Graphic User Interface) information, depth information, scaling information, and resolution information.

According to another aspect of the present invention, there is provided an additional data receiving method including receiving a data stream, a synchronization signal, and a data enable signal; Detecting additional data from an area corresponding to an active period of the data enable signal among the in-stables sections in the synchronization signal; And constructing screen data according to the additional data and the data stream.

Wherein the synchronizing signal includes a vertical synchronizing signal and a horizontal synchronizing signal and the detecting of the additional data comprises detecting the additional data from a stapling interval region of at least one synchronizing signal of the vertical synchronizing signal and the horizontal synchronizing signal, can do.

The additional data may include at least one of caption data, GUI (Graphic User Interface) information, depth information, scaling information, and resolution information.

By including the above-described configuration, it is possible to transmit large-capacity image data including additional data with a small signal transmission.

1 is a block diagram showing a configuration of a data transmitting apparatus according to an embodiment of the present invention;
2 is a flowchart showing a method of transmitting additional data using the data transmitting apparatus of FIG.
3 is a flowchart of a synchronization signal in which a synchronization signal is changed so that a transition interval is formed within a blank interval.
4 is a conceptual diagram showing loading of additional data in a data transmission apparatus;
5 is a block diagram showing the configuration of a data transmitting apparatus according to another embodiment of the present invention;
6 is a flowchart illustrating a method of transmitting additional data using a data transmitting apparatus according to another embodiment of the present invention.
7 is a flowchart illustrating a method of transmitting additional data through a field signal according to another embodiment of the present invention.
8 is a block diagram showing the configuration of a data receiving apparatus according to an embodiment of the present invention;
FIG. 9 is a flowchart illustrating a method of receiving additional data using the data receiving apparatus of FIG. 8;
10 is a conceptual diagram showing that additional data is detected in the data receiving apparatus;

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

FIG. 1 is a block diagram showing the configuration of a data transmission apparatus 100 according to an embodiment of the present invention. FIG. 2 is a flowchart showing a method of transmitting additional data using the data transmission apparatus 100 of FIG. FIG. 4 is a conceptual diagram illustrating loading of additional data in the data transmission apparatus 100. FIG.

1 to 4, a data transmitting apparatus 100 according to an exemplary embodiment of the present invention includes an enable signal generator 110, a synchronizing signal generator 130, An additional data processor 120, and an interface 140 for transmitting data.

The enable signal generating unit 110 generates an enable signal for detecting data at a receiving end. The enable signal is divided into a blank section and an active section. The blank interval is an interval in which no data is detected in the receiving end RX of the data. The horizontal synchronizing signal H sync is divided into H blank and the vertical synchronizing signal V sync is divided into V blank. As will be described later, the receiving end RX receives the data stream and the enable signal from the transmitting terminal TX and detects data when the enable signal is active.

A synchronizing signal generator 130 generates a synchronizing signal indicating a scanning time of a video signal. The data transmission apparatus 100 for transmitting an image signal may include a horizontal synchronization signal generation unit 131 for generating a horizontal synchronization signal and a vertical synchronization signal generation unit 132 for generating a vertical synchronization signal. The horizontal synchronization signal defines one horizontal scanning time of the video signal and the vertical synchronization signal specifies one vertical scanning time of the video signal. For example, in the LCD panel, a horizontal synchronizing signal divides a data line, and a vertical synchronizing signal divides a gate line. At this time, when the vertical synchronizing signal and the horizontal synchronizing signal are applied and the enable signal is activated, data is loaded on the panel.

The synchronization signal is divided into a pulse width section, a back porch section, an active section, and a front porch section. The back porch section and the front porch section are sections displayed on the screen by left and right ends (in the case of a horizontal synchronizing signal) or upper and lower ends (in the case of a vertical synchronizing signal) by an optical blank. In the active section, .

The additional data processing unit 120 is configured to load the additional data into the transmission signal for transmission to the receiving end. The additional data refers to data corresponding to information for adjusting an output image or providing an additional image to a viewer in addition to the basic data necessary for the original image output. For example, caption data, GUI (Graphic User Interface) information, depth information, scaling information, resolution information, and the like. The viewer can view a variety of higher quality images through the above-described additional data.

The manner in which the additional data processing unit 120 transmits the additional data may vary. In one embodiment, there is a method of transmitting additional data through an additional data stream different from the main data stream. Here, the main data means basic video data required for the original video output, and the main data stream refers to the data stream including the main data. The main data stream may be generated by the data stream generating unit 150 described later. The additional data stream refers to a data stream including additional data. In this case, since the main data stream and the additional data stream are read in accordance with the same enable signal at the receiving end, it is possible to detect them collectively and the error is reduced. However, since additional additional data streams need to be transmitted, economical efficiency is low. In another embodiment, the additional data processing unit 120 may load additional data in the main data stream sent to the receiving end. In this case, it is necessary to distinguish the main data from the additional data in the main data stream so that the receiving end understands. For example, there may be a method of loading main data in the active period of the enable signal and loading additional data in the blank period. In this case, the additional data processing unit 120 may be included as a part of the main data processing unit (not shown), which may result in a hardware advantage. However, even though the additional data is part of the image data for image display, the main data and the enable signal do not coincide with each other, so that a separate synchronization scheme is required at the receiving end and an error may occur accordingly.

In another embodiment of the present invention, the additional data processing unit 120 may load the additional data in the stapling interval region of the synchronization signal corresponding to the active period of the enable signal, as shown in FIG. For example, when designing using verilog HDL, the following code of the data transmitting apparatus 100 can be prepared.

always @ (posedge CLK) begin

 if (DataEnable == 0) begin

    WIRE_HSYNC <= HSYNC;

    WIRE_VSYNC < = VSYNC;

 end

else begin

    WIRE_HSYNC <= DATA [0];

    WIRE_VSYNC < = DATA [1];

 end

end

If the enable signal (DataEnable) is 0, the horizontal synchronization signal (HSYNC) and the vertical synchronization signal (VSYNC) are sent as they are. However, when the enable signal DataEnable is 1, the additional data DATA [0] and DATA [1] are loaded into the horizontal synchronizing signal HSYNC and the vertical synchronizing signal VSYNC, respectively.

3, when the vertical synchronization signal VSYNC and the horizontal synchronization signal HSYNC are in the stable interval, when the enable signal DATA enable reaches the active period, the additional data processing unit 120 Additional data [0] and Additional data [1] are loaded in the vertical synchronization signal (VSYNC) and the horizontal synchronization signal (HSYNC), respectively.

As described above, the additional data may be loaded in both the horizontal synchronizing signal and the vertical synchronizing signal, or only one of the two synchronizing signals may be used. In this embodiment, there is no problem of preparing a separate data stream when transmitting a large amount of data, and it is possible to synchronize with other video data (main data), thus facilitating the processing of the receiving end. When using this method, when both the horizontal synchronizing signal HSYNC and the vertical synchronizing signal VSYNC are used in the case where the image data is 1920x1080 which is Full HD and fps (Frame parsec) is 60 Hz, theoretically, 248832000 bits (1920x1080x60x2) The additional data can be transmitted.

However, such additional data processing is not always possible. That is, when the transition interval of the synchronization signal is placed in the blank interval of the enable signal as shown in (2) of FIG. 4, the additional data can be loaded in the interval until the synchronization signal is transited again, 1, there is a problem in that additional data loading is difficult when the transition period of the synchronization signal lies in the active period of the enable signal. Therefore, in this case, the synchronization signal generator 130 described above needs to generate a synchronization signal in which a transition interval is formed in the blank interval in all cases as shown in (2) of FIG.

The interface unit 140 is a configuration for transmitting signals generated and processed by the data transmission apparatus 100. Specifically, the interface unit 140 transmits a data stream, a synchronization signal and a data enable signal loaded with additional data to be described later to the data receiving apparatus 200. In addition, when the data transmitting apparatus 100 loads the additional data into the field signal, the interface unit 140 transmits the field signal.

FIG. 5 is a block diagram illustrating a configuration of a data transmitting apparatus 200 according to another embodiment of the present invention, and FIG. 6 illustrates a method of transmitting additional data using the data transmitting apparatus 200 according to another embodiment of the present invention 7 is a flowchart illustrating a method of transmitting additional data through a field signal according to another embodiment of the present invention.

5 to 7, the data transmitting apparatus 100 according to another embodiment of the present invention may further include a data stream generating unit 150 for generating a data stream. In detail, the data stream generating unit 150 may generate a data stream including video data for video data transmission. The main data and the main data stream described above may be examples of video data and a data stream, respectively. Accordingly, the data stream generating unit 150 may generate a data stream including additional data, or may generate a data stream including only main data, as in the above-described example.

On the other hand, in the embodiment in which the additional data is sent in the form of a sync signal, the additional data may have a value starting from 0. [ In order to solve this problem, a header may be placed at the start point of the additional data. However, this method reduces the loading space of the additional data, and an error may occur when there is data loss in the transmission process. In this case, it is possible to include information informing the fact that the data stream is loaded with additional data. Therefore, it is possible to perform accurate transmission while achieving the effect of the present invention of sending a large amount of data.

7, the data transmitting apparatus 100 according to another embodiment of the present invention may further include a field signal generator for generating a field signal. The field signal is a signal that distinguishes the field of the interlaced video signal. When the data transmitting apparatus 100 according to the present invention complies with the interlaced scanning scheme adopted in the broadcasting system, the data transmitting apparatus 100 generates and transmits field signals through the field signal generating unit. At this time, the above-described additional data can be loaded into the field signal area corresponding to the active section of the data enable signal in the field signal. In this case, as in the case of loading into the synchronous signal, when the enable signal is in the blank section, the field signal is transmitted as it is.

Hereinafter, a method of transmitting additional data will be described with reference to FIGS. 2, 6 and 7. FIG. The data enable signal generation unit 110 of the data transmission apparatus 100 generates a data enable signal (S210, S610, and S710). The synchronous signal generator 130 generates a synchronous signal in which a transition period is formed in the blank section (S220, S720), and can generate a horizontal synchronous signal and a vertical synchronous signal according to the embodiment, (S620, S630). When transmitting additional data using a field signal, a field signal generator (not shown) generates a field signal (S730). If the enable signal becomes blank (S230-Y, S640-Y, S740-Y), the sync signal and the field signal are transmitted as they are. However, if the enable signal becomes active (S230-N, S640-N, and S740-N), data stream generation and additional data loading are terminated (S660, S680, S770) Data loading is performed (S240, S670, S690, S750, S760). When both the additional data loading and the data stream generation are completed, the interface unit 140 transmits a synchronization signal, a data stream, an enable signal, etc. (S260, S655, S780)

FIG. 8 is a block diagram showing the configuration of a data receiving apparatus 200 according to an embodiment of the present invention. FIG. 9 is a flowchart showing a method of receiving additional data using the data receiving apparatus 200 of FIG. 10 is a conceptual diagram showing that additional data in the data receiving apparatus 200 is detected.

8 to 10, a data receiving apparatus 200 according to an embodiment of the present invention includes an interface 210 for receiving a signal, a detector 220 for detecting additional data from the received signal, And a data processing unit 230 that constitutes data.

The interface unit 210 receives the data stream, the synchronization signal, and the data enable signal. As described above, the data stream generating unit 150 of the data transmitting apparatus 100 generates a data stream to be transmitted, and the enable signal generating unit 110 generates a data enable signal divided into a blank interval and an active interval . In addition, the synchronization signal generating unit 130 generates a synchronization signal in which a transition section is formed in the blank section, and the additional data processing section 120 generates additional data in the stapler section area corresponding to the active section, And the interface unit 140 transmits the generated synchronization signal, data enable signal, and data stream. The interface unit 210 of the data receiving apparatus 200 receives the data stream, the sync signal, and the data enable signal transmitted from the data transmitting apparatus 100 and passes the data stream to the detecting unit 220 for detecting additional data.

The detection unit 220 detects the additional data from the received synchronization signal. More specifically, the additional data is detected from an area corresponding to the active section of the data enable signal among the stable sections in the synchronization signal. For example, when designing using verilog HDL, the following code of the data receiving apparatus 200 can be generated.

always @ (posedge CLK) begin

if (DataEnable == 0) begin

HSYNC <= WIRE_HSYNC;

VSYNC <= WIRE_VSYNC;

end

else begin

DATA [0] < = WIRE_HSYNC;

DATA [1] < = WIRE_VSYNC;

end

    end

If the enable signal DataEnable is 0, the received horizontal synchronization signal HSYNC and vertical synchronization signal VSYNC are used as they are. However, when the enable signal DataEnable is 1, the additional data stored in each of the horizontal synchronization signal HSYNC and the vertical synchronization signal VSYNC is passed to DATA [0] and DATA [1].

That is, when the vertical synchronization signal VSYNC and the horizontal synchronization signal HSYNC are in the stable interval as shown in FIG. 10, when the enable signal DATA Enable reaches the active period, Additional data [0] and Additional data [1] are detected from the signals VSYNC and HSYNC, respectively.

As described above, the additional data may be detected from both the horizontal synchronizing signal and the vertical synchronizing signal, or only one of the two synchronizing signals may be used.

However, the present invention is not limited to the above-described embodiment. In the case where the additional data is loaded into the data stream or loaded into the field signal as described above, the detection unit 220 can detect the additional data from each signal .

The data processing unit 230 forms screen data according to the additional data and the data stream. That is, the data processing unit 230 detects image data included in the data stream when the enable signal reaches the active period and the synchronization signal reaches HIGH, and performs image processing. Then, the screen data is composed by mixing the detected image data and the additional data. The display device scans the panel data to display an image.

Hereinafter, a method of receiving additional data will be described with reference to FIG. First, the interface 210 of the data receiving apparatus 200 receives a data stream, a sync signal, and a data enable signal (S910). The data processor 230 detects the video data in the data stream (S920). If the enable signal is blank (S930-N), the data processor 230 processes the received sync signal as a sync signal. However, if the enable signal is active (S930-Y), the detecting unit 220 detects additional data from the area corresponding to the active period of the data enable signal among the stapler sections in the synchronization signal (S950). Then, the data processing unit 230 forms the screen data according to the additional data and the data stream (S960). This process continues until data detection is completed (S970).

According to various embodiments of the present invention, it is possible to transmit large-capacity image data including additional data with a small signal transmission. Therefore, it is possible to economically and efficiently transmit and receive large-capacity data by using the existing interface as it is.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100: Data transmission device 110:
120: additional data processing unit 130: synchronous signal generating unit
131: horizontal synchronizing signal generating unit 132: vertical synchronizing signal generating unit
140: interface unit 150: data stream generating unit
200: data receiving apparatus 210:
220: detecting unit 230:

Claims (16)

In the data transmitting apparatus,
An enable signal generator for generating a data enable signal divided into a blank section and an active section;
A synchronization signal generator for adjusting the width of the synchronization signal and generating the synchronization signal so that the transition interval is formed only within the blank interval when a transition interval of the synchronization signal is formed in the active interval;
The enable signal and the synchronization signal from the enable signal generator and the synchronization signal generator, respectively, and outputs the enable signal and the synchronization signal to the main controller, An additional data processing unit for loading additional data that can be synchronized with the data; And
And an interface unit for transmitting the synchronization signal and the data enable signal to which the additional data is loaded, to the data receiving apparatus. The method according to claim 1,
Wherein the synchronization signal generation unit comprises:
A vertical synchronization signal generator for generating a vertical synchronization signal; And
And a horizontal synchronizing signal generator for generating a horizontal synchronizing signal,
Wherein the additional data processing unit comprises:
Wherein the additional data is loaded in the at least one of the vertical synchronization signal generator and the horizontal synchronization signal generator. [Claim 3 is abandoned upon payment of the registration fee.] 3. The method of claim 2,
And a data stream generating unit for generating a data stream to be transmitted to the data receiving apparatus,
Wherein the data stream includes information indicating the loading of the additional data,
And the interface unit further transmits the data stream to the data receiving apparatus. [Claim 4 is abandoned upon payment of the registration fee.] The method according to claim 1,
And a field signal generator for generating a field signal,
Wherein the additional data processing unit comprises:
Further loading the additional data in a field signal area corresponding to an active section of the data enable signal in the field signal,
Wherein the interface unit further transmits the field signal to the data receiving apparatus. [Claim 5 is abandoned upon payment of registration fee.] 5. The method according to any one of claims 1 to 4,
The additional data may include:
Caption data, GUI (Graphic User Interface) information, depth information, scaling information, and resolution information. In the data receiving apparatus,
An interface unit for receiving a data stream, a synchronization signal, and a data enable signal;
A detector for receiving the data stream, the synchronizing signal, and the data enable signal from the interface unit and detecting additional data from an area corresponding to an active section of the data enable signal among the stapler sections in the synchronizing signal; And
And a data processing unit for receiving the additional data from the detection unit and configuring screen data according to the additional data and the data stream,
Wherein the main data and the additional data included in the data stream are synchronizable without any separate operation. The method according to claim 6,
Wherein the synchronization signal includes a vertical synchronization signal and a horizontal synchronization signal,
Wherein:
And detects the additional data from a stapling interval region of at least one of the vertical synchronizing signal and the horizontal synchronizing signal. [8] has been abandoned due to the registration fee. 8. The method according to claim 6 or 7,
The additional data may include:
Subtitle data, graphical user interface (GUI) information, depth information, scaling information, and resolution information. A method for transmitting additional data of a data transmission apparatus,
Generating a data enable signal that is divided into a blank section and an active section;
Adjusting the width of the synchronization signal to generate the synchronization signal so that the transition interval is formed only within the blank interval when a transition interval of the synchronization signal is formed in the active interval;
Loading additional data that can be synchronized with the main data in a stapler section area corresponding to the active section of the stapler section in the synchronization signal without any additional operation; And
And transmitting the synchronization enable signal and the data enable signal to the data receiving apparatus. 10. The method of claim 9,
Wherein the step of generating the synchronization signal comprises:
Generating a vertical synchronization signal; And
Generating a horizontal synchronization signal,
Wherein the additional data is loaded in at least one of the vertical synchronization signal and the horizontal synchronization signal in the step interval region. 11. The method of claim 10,
And generating a data stream to be transmitted to the data receiving apparatus,
Wherein the data stream includes information indicating the loading of the additional data,
Wherein the step of transmitting the signal further comprises transmitting the data stream to the data receiving apparatus. 10. The method of claim 9,
And generating a field signal,
Wherein the step of loading the additional data comprises:
Further loading the additional data in a field signal area corresponding to an active section of the data enable signal in the field signal,
Wherein the step of transmitting the signal further comprises transmitting the field signal to the data receiving apparatus. [13] has been abandoned due to the registration fee. 13. The method according to any one of claims 9 to 12,
The additional data may include:
Subtitle data, graphical user interface (GUI) information, depth information, scaling information, and resolution information. A method of receiving additional data of a data receiving apparatus,
Receiving a data stream, a synchronization signal, and a data enable signal;
Detecting additional data from an area corresponding to an active period of the data enable signal from among the stable intervals in the synchronization signal; And
And constructing screen data according to the additional data and the data stream,
Wherein the main data and the additional data included in the data stream are synchronizable without any separate operation. 15. The method of claim 14,
Wherein the synchronization signal includes a vertical synchronization signal and a horizontal synchronization signal,
Wherein the step of detecting the additional data comprises:
Wherein the additional data is detected from a stapling interval region of at least one of the vertical synchronizing signal and the horizontal synchronizing signal. [Claim 16 is abandoned upon payment of registration fee.] 16. The method according to claim 14 or 15,
The additional data may include:
Subtitle data, graphical user interface (GUI) information, depth information, scaling information, and resolution information.

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