KR20130076928A - Data transmitting apparatus, data receiving apparatus, methods for transmitting and receiving data - Google Patents

Abstract

PURPOSE: A data transmitting device, a data receiving device, an additional data transmitting method and a receiving method are provided to transmit massive video data including an additional data by small signal transmission. CONSTITUTION: An enable signal generator (110) produces a data enable signal which is divided into a blank section and an active section. A synchronization signal generator (130) produces a synchronization signal which forms a transition section within the blank section. An additional data processor (120) loads additional data into a stable sectional area corresponding to the active section out of a stable section within the synchronization signal. An interface unit (140) transmits a synchronization signal into which the additional data is loaded and the data enable signal to a data receiving device. [Reference numerals] (110) Enable signal generator; (120) Additional data processor; (130) Synchronization signal generator; (140) Interface unit

Description

Data transmitting apparatus, data receiving apparatus, additional data transmitting method and receiving method {DATA TRANSMITTING APPARATUS, DATA RECEIVING APPARATUS, METHODS FOR TRANSMITTING AND RECEIVING 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, a data transmitting apparatus, a data receiving apparatus, and an additional data transmission capable of further transmitting or receiving additional data in addition to video data. It relates to a method and a receiving method.

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

The most obvious way to send and receive large amounts of data is to increase the data transmission bandwidth. However, it may be costly to extend the physical interface, and in some cases interface compatibility with older devices is required.

Therefore, there is a need for an economical and efficient mass data transmission / reception scheme using the existing interface as it is.

The present invention has been made in accordance with the above-described needs, and an object of the present invention relates to a data transmitting apparatus, a data receiving apparatus, an additional data transmitting method, and a receiving method capable of further transmitting or receiving additional data in addition to video data.

In accordance with another aspect of the present invention, an apparatus for transmitting data includes an enable signal generator configured to generate a data enable signal divided into a blank period and an active period; A synchronization signal generator configured to generate a synchronization signal having a transition period formed in the blank period; An additional data processor configured to load additional data into a stable period region corresponding to the active period among the stable periods in the synchronization signal; And an interface unit configured to transmit the synchronization signal loaded with the additional data and the data enable signal to a data receiving apparatus.

The sync signal generator may include a vertical sync signal generator configured to generate a vertical sync signal; And a horizontal synchronizing signal generating unit configured to generate a horizontal synchronizing signal, wherein the additional data processing unit includes the additional data in the stable interval region of at least one of the vertical synchronizing signal generating unit and the horizontal synchronizing signal generating unit. Can be loaded.

And a data stream generator for generating a data stream to be transmitted to the data receiving apparatus, wherein the data stream includes information informing that the additional data is loaded, and the interface unit transmits the data stream to the data receiving apparatus. Can be sent further.

A field signal generator configured to generate a field signal, wherein the additional data processor is further configured to further load the additional data into a field signal region corresponding to an active section of the data enable signal in the field signal, The interface unit may further transmit the field signal to a data receiving apparatus.

The additional data may include at least one of caption data, graphical user interface (GUI) information, depth information, scaling information, and resolution information.

Data receiving apparatus according to an embodiment of the present invention for achieving the above object is an interface unit for receiving a data stream, a synchronization signal and a data enable signal; A detector configured to detect additional data from an area corresponding to an active period of the data enable signal among the stable periods in the synchronization signal; And a data processor configured to configure screen data according to the additional data and the data stream.

The sync signal may include a vertical sync signal and a horizontal sync signal, and the detector may detect the additional data from a stable period region of at least one sync signal among the vertical sync signal and the horizontal sync signal.

The additional data may include at least one of caption data, graphical user interface (GUI) information, depth information, scaling information, and resolution information.

An additional data transmission method according to an embodiment of the present invention for achieving the above object comprises the steps of: generating a data enable signal divided into a blank period and an active period; Generating a synchronization signal having a transition period formed in the blank period; Loading additional data into a stable interval region corresponding to the active interval among the stable intervals in the synchronization signal; And transmitting the synchronization signal loaded with the additional data and the data enable signal to a data receiving device.

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 the stable period region of at least one of the vertical synchronizing signal and the horizontal synchronizing signal.

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 transmitting the signal comprises transmitting the data stream to the data. You can send more to the receiving device.

The method may further include generating a field signal, wherein the loading of the additional data further includes loading the additional data into a field signal region corresponding to an active period of the data enable signal in the field signal, The transmitting of the signal may further transmit the field signal to the data receiving apparatus.

The additional data may include at least one of caption data, graphical user interface (GUI) information, depth information, scaling information, and resolution information.

Additional data receiving method according to an embodiment of the present invention for achieving the above object comprises the steps of 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 a stable period within the synchronization signal; And configuring 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 detecting of the additional data may include detecting the additional data from a stable interval region of at least one of the vertical synchronization signal and the horizontal synchronization signal. can do.

The additional data may include at least one of caption data, graphical user interface (GUI) information, depth information, scaling information, and resolution information.

The present invention enables the transmission of large-capacity image data including additional data with little signal transmission by including the above configuration.

1 is a block diagram showing the configuration of a data transmission apparatus according to an embodiment of the present invention.
2 is a flowchart illustrating a method of transmitting additional data using the apparatus for transmitting data of FIG. 1.
3 is a synchronous signal flow diagram in which a synchronous signal is changed so that a transition period is formed in a blank period;
4 is a conceptual diagram illustrating loading additional data in a data transmission apparatus.
5 is a block diagram showing the configuration of a data transmission apparatus according to another embodiment of the present invention.
6 is a flowchart illustrating a method of transmitting additional data using a data transmission 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 illustrating a configuration of a data receiving apparatus according to an embodiment of the present invention.
9 is a flowchart illustrating a method of receiving additional data using the data receiving device of FIG. 8.
10 is a conceptual diagram illustrating detection of additional data in a data receiving apparatus.

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

1 is a block diagram illustrating a configuration of a data transmission apparatus 100 according to an embodiment of the present invention, FIG. 2 is a flowchart illustrating a method of transmitting additional data using the data transmission apparatus 100 of FIG. 1, and FIG. 3. Is a synchronous signal flow diagram in which a synchronous signal is changed so that a transition period is formed in a blank period, and FIG. 4 is a conceptual diagram illustrating loading of additional data in the data transmission apparatus 100.

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

The enable signal generator 110 is a component that generates an enable signal for enabling data detection at a receiving end. The enable signal is divided into a blank section and an active section. The blank period is a period in which data is not detected at the receiving end RX of the data, and the horizontal sync signal H sync is divided into H Blank, and the vertical sync 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 end TX and detects data when the enable signal is the active period.

The synchronizing signal generator 130 is a component for generating a synchronizing signal indicating a scanning time of an image signal. The data transmission apparatus 100 for transmitting an image signal may include a horizontal sync signal generator 131 for generating a horizontal sync signal, and a vertical sync signal generator 132 for generating a vertical sync signal. The horizontal synchronization signal defines one horizontal scanning time of the video signal, and the vertical synchronization signal defines one vertical scanning time of the video signal. For example, in the LCD panel, the horizontal synchronization signal may partition the data line, and the vertical synchronization signal may partition the gate line. In this case, when the vertical synchronization signal and the horizontal synchronization signal are applied and the enable signal is activated, data is loaded in 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 displayed as optical blanks at the left and right ends (for horizontal sync signals) or top and bottom (for vertical sync signals) on the screen. Is the interval to be supplied.

The additional data processor 120 is configured to load additional data into a transmission signal to send the additional data to the receiver. 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 basic data necessary for outputting an original image. For example, caption data, GUI (Graphic User Interface) information, depth information, scaling information, resolution information, and the like correspond. The viewer can watch a variety of higher quality images through the additional data.

The additional data processor 120 may transmit the additional data in various ways. According to an embodiment, there is a method of transmitting additional data through an additional additional data stream that is distinguished from the main data stream. Here, the main data refers to basic video data necessary for outputting an original video, and the main data stream refers to a data stream including main data. The main data stream may be generated by the data stream generator 150 to be described later. In addition, the additional data stream refers to a data stream containing additional data. In this case, since the main data stream and the additional data stream are read by the same enable signal at the receiver, detection can be performed in a batch, thereby reducing errors. However, since it is necessary to transmit a separate additional data stream, the economy is inferior. In another embodiment, the additional data processor 120 may load additional data into a main data stream sent to the receiver. In this case, it is necessary to distinguish between the main data and the supplementary data in the main data stream so that the receiver can understand it. For example, there may be a method of loading main data in an active period of an enable signal and loading additional data in a blank period. In this case, the additional data processor 120 may be included as a part of the main data processor (not shown), which may result in a hardware advantage. However, even though the additional data is part of the image data for displaying the image, the main data and the enable signal do not coincide with each other, and thus a separate synchronization scheme is required at the receiving end, thereby causing an error.

As another embodiment of the present invention, as shown in FIG. 3, the additional data processor 120 may load additional data into a stable section region of a sync signal corresponding to an active section of the enable signal. For example, when designing using verilog HDL, the following code of the data transmission apparatus 100 can be created.

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

Looking at the verilog code above, when the enable signal DataEnable is 0, the horizontal sync signal HSYNC and the vertical sync 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 sync signal HSYNC and the vertical sync signal VSYNC, respectively.

That is, as shown in FIG. 3, when the vertical sync signal VSYNC and the horizontal sync signal HSYNC are in the stable period, when the enable signal DATA Enable reaches the active period, the additional data processor 120 The additional data [0] and the additional data [1] are loaded on the vertical synchronizing signal VSYNC and the horizontal synchronizing signal HSYNC, respectively.

As such, the additional data may be loaded into both the horizontal and vertical synchronization signals, and only one of the synchronization signals may be used. In this embodiment, there is no problem in preparing a separate data stream in transmitting a large amount of data, and it is possible to synchronize with other video data (main data), thereby making it easier to process the receiving end. When using this method, if the video data is 1920x1080 with FullHD and fps (Frame par sec) is 60Hz, if both horizontal sync signal (HSYNC) and vertical sync signal (VSYNC) are used, theoretically 248832000 bits (1920x1080x60x2) Additional data can be transmitted.

However, such additional data processing is not always possible. That is, when the transition section of the sync signal is in the blank section of the enable signal as shown in (2) of FIG. 4, additional data may be loaded in the section until the sync signal is transitioned again. As shown in 1), when the transition period of the synchronization signal is in the active period of the enable signal, it is difficult to load additional data. Therefore, in this case, the above-described sync signal generator 130 needs to generate a sync signal in which a transition section is formed in a blank section in all cases as shown in FIG.

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

5 is a block diagram illustrating a configuration of a data transmission apparatus 200 according to another embodiment of the present invention, and FIG. 6 is a view illustrating an additional data transmission method using the data transmission 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 transmission apparatus 100 according to another embodiment of the present invention may further include a data stream generator 150 for generating a data stream. In detail, the data stream generator 150 may generate a data stream including image data for transmitting image data. The aforementioned main data and main data streams may be examples of image data and data streams, respectively. Therefore, as described above, the data stream generator 150 may generate a data stream including additional data, or may generate a data stream including only main data.

On the other hand, in an embodiment in which the additional data is loaded on the synchronization signal, the additional data may have a value starting with zero. In order to solve this problem, a header may be placed at the start of the additional data, but this method reduces the loading space of the additional data, and an error may occur when there is a data loss in the transmission process. In this case, the data stream may include information indicating the loading of the additional data. Therefore, accurate transmission can be achieved while achieving the effect of the present invention for sending a large amount of data.

Referring to FIG. 7, the data transmission apparatus 100 according to another exemplary embodiment may further include a field signal generator that generates a field signal. The field signal refers to a signal that distinguishes a field of the interlaced scanned video signal. When the data transmission apparatus 100 according to the present invention follows the interlaced scanning scheme adopted by the broadcast system, the data transmission apparatus 100 generates and transmits a field signal through the field signal generator. In this case, the aforementioned additional data may be loaded in the field signal region corresponding to the active period of the data enable signal in the field signal. In this case, when the enable signal is in the blank period as in the case of loading the synchronization signal, 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. The data enable signal generator 110 of the data transmission apparatus 100 generates a data enable signal (S210, S610, and S710). The synchronization signal generator 130 generates a synchronization signal in which a transition period is formed in the blank period (S220, S720). The synchronization signal generator 130 may generate a horizontal synchronization signal and a vertical simultaneous signal according to an embodiment, and generate only one of them. It may also be (S620, S630). In addition, when the additional data is transmitted using the field signal, the field signal generator (not shown) generates the field signal (S730). If the enable signal becomes blank (S230-Y, S640-Y, S740-Y), the synchronization signal or the field signal is transmitted as it is. However, when the enable signal is active (S230-N, S640-N, S740-N), the data stream is generated or added until the data stream generation and the additional data loading are finished (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, and the like (S260, S655. S780).

8 is a block diagram illustrating a configuration of a data receiving apparatus 200 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 200 of FIG. 8. 10 is a conceptual diagram illustrating detection of additional data in the data receiving apparatus 200.

8 to 10, the data receiving apparatus 200 according to an embodiment of the present invention includes an interface unit 210 for receiving a signal, a detector 220 for detecting additional data from the received signal, and a screen. It may include a data processor 230 constituting the data.

The interface unit 210 is configured to receive a data stream, a synchronization signal, and a data enable signal. As described above, the data stream generator 150 of the data transmitter 100 generates a data stream to be transmitted, and the enable signal generator 110 generates a data enable signal divided into a blank period and an active period. . In addition, the synchronization signal generator 130 generates a synchronization signal in which a transition period is formed in the blank period, and the additional data processor 120 adds additional data to a stable period area corresponding to the active period among the stable periods in the synchronization signal. 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 a data stream, a synchronization signal, and a data enable signal transmitted from the data transmitting apparatus 100 and passes it to the detector 220 to detect additional data.

The detector 220 detects additional data from the received synchronization signal. Specifically, the additional data is detected from a region corresponding to the active period of the data enable signal among the stable periods in the synchronization signal. For example, when designing using verilog HDL, the following code of the data receiving apparatus 200 may be created.

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

Looking at the above verilog code, when the enable signal DataEnable is 0, the received horizontal sync signal HSYNC and vertical sync signal VSYNC are used as they are. However, when the enable signal DataEnable is 1, additional data carried in each of the horizontal sync signal HSYNC and the vertical sync signal VSYNC is passed to DATA [0] and DATA [1].

That is, as shown in FIG. 10, when the vertical synchronization signal VSYNC and the horizontal synchronization signal HSYNC are in the stable period, when the enable signal DATA Enable reaches the active period, the detection unit 220 performs vertical synchronization. Additional data Additional data [0] and Additional data [1] are detected from the signal VSYNC and the horizontal synchronizing signal HSYNC, respectively.

As such, the additional data may be detected from both the horizontal synchronization signal and the vertical synchronization signal, and only one of the synchronization signals may be used.

However, the present invention is not limited to the above embodiment, and as described above, when additional data is loaded into a data stream or a field signal, the detector 220 may detect additional data from each signal. .

The data processor 230 configures screen data according to the additional data and the data stream. That is, when the enable signal reaches the active period and the synchronization signal reaches the high level, the data processor 230 detects the image data included in the data stream and processes the image. Then, the screen data is constructed by mixing the detected video data and the additional data. The display apparatus scans screen data on a panel to display an image.

Hereinafter, a method of receiving additional data will be described with reference to FIG. 9. First, the interface unit 210 of the data receiving apparatus 200 receives a data stream, a synchronization signal, and a data enable signal (S910). The data processor 230 detects image data from the data stream (S920), and when the enable signal is blank (S930-N), processes the received sync signal as a sync signal (S940). However, when the enable signal is active (S930-Y), the detector 220 detects additional data from an area corresponding to the active period of the data enable signal among the stable periods in the synchronization signal (S950). The data processor 230 configures screen data according to the additional data and the data stream (S960). This process continues until the end of data detection (S970).

According to various embodiments of the present disclosure, it is possible to transmit a large amount of image data including additional data with less signal transmission. Therefore, economical and efficient mass data transmission / reception is possible by using the existing interface as it is.

While the above has been shown and described with respect to preferred embodiments of the invention, the invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

100: data transmission apparatus 110: enable signal generation unit
120: additional data processing unit 130: synchronization signal generation unit
131: horizontal sync signal generator 132: vertical sync signal generator
140: interface unit 150: data stream generation unit
200: data receiving apparatus 210: interface unit
220: detector 230: data processor

Claims (16)

In the data transmission apparatus,
An enable signal generator configured to generate a data enable signal divided into a blank period and an active period;
A synchronization signal generator configured to generate a synchronization signal having a transition period formed in the blank period;
An additional data processor configured to load additional data into a stable period region corresponding to the active period among the stable periods in the synchronization signal; And
And an interface unit configured to transmit the synchronization signal loaded with the additional data and the data enable signal to a data receiving device. The method of claim 1,
The sync signal generator,
A vertical synchronization signal generator for generating a vertical synchronization signal; And
And a horizontal synchronizing signal generator for generating a horizontal synchronizing signal.
The additional data processing unit,
And loading the additional data into the stable interval region of at least one of the vertical synchronization signal generator and the horizontal synchronization signal generator. The method of claim 2,
And a data stream generator for generating a data stream to be transmitted to the data receiving apparatus.
The data stream includes information indicating the loading fact of the additional data,
And the interface unit further transmits the data stream to a data receiving apparatus. The method of claim 1,
Further comprising: a field signal generator for generating a field signal,
The additional data processing unit,
Further loading the additional data into a field signal region corresponding to an active period of the data enable signal in the field signal;
And the interface unit further transmits the field signal to a data receiving apparatus. 5. The method according to any one of claims 1 to 4,
The additional data,
And at least one of caption data, graphical user interface (GUI) 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 configured to detect additional data from an area corresponding to an active period of the data enable signal among the stable periods in the synchronization signal; And
And a data processor configured to configure screen data according to the additional data and the data stream. The method according to claim 6,
The sync signal includes a vertical sync signal and a horizontal sync signal,
Wherein:
And detecting the additional data from a stable period region of at least one of the vertical synchronization signal and the horizontal synchronization signal. 8. The method according to claim 6 or 7,
The additional data,
And at least one of caption data, graphical user interface (GUI) information, depth information, scaling information, and resolution information. In the additional data transmission method of the data transmission device,
Generating a data enable signal divided into a blank period and an active period;
Generating a synchronization signal having a transition period formed in the blank period;
Loading additional data into a stable interval region corresponding to the active interval among the stable intervals in the synchronization signal; And
And transmitting the synchronization signal loaded with the additional data and the data enable signal to a data receiving device. 10. The method of claim 9,
Generating the sync signal,
Generating a vertical synchronization signal; And
Generating a horizontal synchronization signal;
And the additional data is loaded in the stable period region of at least one of the vertical synchronization signal and the horizontal synchronization signal. The method of claim 10,
Generating a data stream to be transmitted to the data receiving apparatus;
The data stream includes information indicating the loading fact of the additional data,
The transmitting of the signal further comprises transmitting the data stream to the data receiving apparatus. 10. The method of claim 9,
Generating a field signal;
The loading of the additional data may include:
Further loading the additional data into a field signal region corresponding to an active period of the data enable signal in the field signal;
The transmitting of the signal further comprises transmitting the field signal to the data receiving apparatus. 13. The method according to any one of claims 9 to 12,
The additional data,
And at least one of caption data, graphical user interface (GUI) information, depth information, scaling information, and resolution information. In the additional data receiving method of the data receiving device,
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 stable periods in the synchronization signal; And
And configuring screen data according to the additional data and the data stream. 15. The method of claim 14,
The sync signal includes a vertical sync signal and a horizontal sync signal,
Detecting the additional data,
And detecting the additional data from a stable period region of at least one of the vertical synchronization signal and the horizontal synchronization signal. The method according to claim 13 or 14,
The additional data,
And at least one of caption data, graphical user interface (GUI) information, depth information, scaling information, and resolution information.

Images