KR102141027B1 - Digital scan convertor and operation method thereof - Google Patents

Abstract

The digital scan converter according to an embodiment of the present invention includes a scan line data storage unit, an input controller, a lookup table, a plurality of buffers, and an interpolation unit. The scan line data storage unit may store scan line data corresponding to each scan line for the received ultrasound signal. The input controller may provide selected scanline data sequentially selected among scanline data. The lookup table may provide location information and distance information of initial sample data corresponding to the target pixel based on the scan line information provided from the input controller. The plurality of buffers may store the selected scan line data and provide initial sample data and remaining sample data among the selected scan line data based on the location information of the initial sample data. The interpolation unit may provide interpolation data determined according to initial sample data, remaining sample data, and distance information.
In the digital scan converter according to the present invention, while two adjacent scan line data are stored in the buffer and the next scan line data is stored in the buffer, data of the target pixel is determined using information stored in the adjacent scan line data and the lookup table. By doing so, real-time ultrasound images can be generated while saving memory resources.

Description

DIGITAL SCAN CONVERTOR AND OPERATION METHOD THEREOF

The present invention relates to a digital scan converter and its operating method.

Intravascular ultrasound images have difficulty in real-time ultrasound images due to the high sampling frequency and the number of scan lines. In addition, a large amount of memory is required to store data corresponding to a high sampling frequency and many scanning lines. Various studies have been conducted to overcome the limitations of these resources.

(Korea Open Patent) No. 10-2013-0002065 (published date, 2013.1.7)

The technical problem to be achieved by the present invention is to provide a digital scan converter and its operation method.

Specifically, while two adjacent scanline data are stored in the buffer and the next scanline data is stored in the buffer, memory resources are determined by determining the data of the target pixel using the information stored in the adjacent scanline data and the lookup table. Real-time ultrasound images can be generated while saving.

To solve this problem, the digital scan converter according to an embodiment of the present invention includes a scan line data storage unit, an input controller, a lookup table, a plurality of buffers, and an interpolation unit. The scan line data storage unit may store scan line data corresponding to each scan line for the received ultrasound signal. The input controller may provide selected scanline data sequentially selected among the scanline data. The lookup table may provide location information and distance information of initial sample data corresponding to a target pixel based on scan line information provided from the input controller. A plurality of buffers may store the selected scan line data and provide the initial sample data and the remaining sample data among the selected scan line data based on the location information of the initial sample data. The interpolation unit may provide interpolation data determined according to the initial sample data, the remaining sample data, and the distance information.

In one embodiment, the target pixel may be disposed between a current scanline corresponding to the scanline information and a previous scanline corresponding to previous scanline information provided before the scanline information.

In one embodiment, a location corresponding to the initial sample data may be placed on the previous scan line.

In one embodiment, the remaining sample data may include first to third remaining sample data. The first remaining sample data may be included in selected scan line data corresponding to the previous scan line. The second and third remaining sample data may be included in the selected scan line data corresponding to the current scan line.

In one embodiment, when the initial sample data is the N (N is a natural number) th data among the selected scan line data corresponding to the previous scan line, the first remaining sample data is the selected scan corresponding to the previous scan line It may be N+1th data among line data.

In one embodiment, when the second remaining sample data is the N (N is a natural number) data among the selected scan line data corresponding to the current scan line, the third remaining sample data corresponds to the current scan line It may be N+1th data among the selected scan line data.

In one embodiment, the look-up table may include location information and distance information of initial sample data for a first one of a plurality of quadrants that divide an ultrasound image.

In one embodiment, the initial sample data and the remaining sample data corresponding to the second quadrant may be generated based on the location information of the initial sample data for the first quadrant.

In one embodiment, the interpolation data corresponding to the second quadrant may be generated based on the distance information for the first quadrant.

To solve this problem, a digital scan converter according to an embodiment of the present invention includes a scan line data storage unit, an input controller, a lookup table, a plurality of buffers, an interpolation unit and a display buffer. The scan line data storage unit may store scan line data corresponding to each scan line for the received ultrasound signal. The input controller may provide selected scanline data sequentially selected among the scanline data. The lookup table may provide location information and distance information of initial sample data corresponding to a target pixel based on scan line information provided from the input controller. A plurality of buffers may store the selected scan line data and provide the initial sample data and the remaining sample data among the selected scan line data based on the location information of the initial sample data. The interpolation unit may provide interpolation data determined according to the initial sample data, the remaining sample data, and the distance information. The display buffer can store the interpolation data.

In one embodiment, the target pixel may be disposed between a current scanline corresponding to the scanline information and a previous scanline corresponding to previous scanline information provided before the scanline information. The location corresponding to the initial sample data may be placed on the previous scan line.

In order to solve this problem, in the operation method of the digital scan converter according to the embodiment of the present invention, the scan line data storage unit may store scan line data corresponding to each scan line for the received ultrasound signal. The input controller may provide selected scanline data sequentially selected among the scanline data. The lookup table may provide location information and distance information of initial sample data corresponding to a target pixel based on scan line information provided from the input controller. A plurality of buffers may store the selected scan line data, and provide the initial sample data and the remaining sample data among the selected scan line data based on location information of the initial sample data. The interpolation unit may provide interpolation data determined according to the initial sample data, the remaining sample data, and the distance information.

In one embodiment, the look-up table may include location information and distance information of initial sample data for a first one of a plurality of quadrants that divide an ultrasound image. The initial sample data corresponding to the second quadrant and the remaining sample data may be generated based on the location information of the initial sample data for the first quadrant.

In order to solve this problem, in the digital scan conversion method according to an embodiment of the present invention, the scan line data storage unit may store scan line data corresponding to each scan line for the received ultrasound signal. The input controller may provide selected scanline data sequentially selected among the scanline data. The lookup table may provide location information and distance information of initial sample data corresponding to a target pixel based on scan line information provided from the input controller. A plurality of buffers may store the selected scan line data, and provide the initial sample data and the remaining sample data among the selected scan line data based on location information of the initial sample data. The interpolation unit may provide interpolation data determined according to the initial sample data, the remaining sample data, and the distance information. A display buffer can store the interpolation data.

In one embodiment, the target pixel may be disposed between a current scanline corresponding to the scanline information and a previous scanline corresponding to previous scanline information provided before the scanline information. The remaining sample data may include first to third remaining sample data. The first remaining sample data may be included in selected scan line data corresponding to the previous scan line. The second and third remaining sample data may be included in the selected scan line data corresponding to the current scan line.

In addition to the technical problems of the present invention mentioned above, other features and advantages of the present invention are described below, or it will be clearly understood by those skilled in the art from the description and description.

According to the present invention as described above has the following effects.

In the digital scan converter according to the present invention, while two adjacent scan line data are stored in a buffer and the next scan line data is stored in a buffer, data of a target pixel is used using information stored in the adjacent scan line data and a lookup table. By determining, it is possible to generate a real-time ultrasound image while saving memory resources.

In the operation method of the digital scan converter according to the present invention, while two adjacent scan line data are stored in the buffer and the next scan line data is stored in the buffer, the target pixel is used using the information stored in the adjacent scan line data and the lookup table. By determining the data of, it is possible to generate a real-time ultrasound image while saving memory resources.

In addition, other features and advantages of the present invention may be newly identified through embodiments of the present invention.

1 is a view showing a digital scan converter according to embodiments of the present invention.
FIG. 2 is a diagram illustrating an example of buffers included in the digital scan converter of FIG. 1.
3 and 4 are diagrams for describing operations of a plurality of buffers and a lookup table included in the digital scan converter of FIG. 1.
FIG. 5 is a diagram for explaining positions of remaining sample data provided in the plurality of buffers of FIG. 1.
6 and 7 are diagrams illustrating an example of selected scan line data among scan line data.
8 is a view for explaining the operation of the interpolation unit included in the digital scan converter of FIG. 1.
9 is a view for explaining an example of a lookup table included in the digital scan converter of FIG. 1.
10 and 11 are views for explaining a method of storing location information and distance information of initial sample data in a lookup table included in the digital scan converter of FIG. 1.
12 is a view for explaining a method of using a lookup table included in the digital scan converter of FIG. 1.
13 is a diagram illustrating a digital scan converter according to embodiments of the present invention.
14 is a view showing an operation method of a digital scan converter according to embodiments of the present invention.
15 is a diagram illustrating a digital scan conversion method according to embodiments of the present invention.

It should be noted that in this specification, when adding reference numerals to the components of each drawing, the same components have the same number as possible, even if they are displayed on different drawings.

On the other hand, the meaning of the terms described in this specification should be understood as follows.

Singular expressions are to be understood as including plural expressions unless the context clearly defines otherwise, and the scope of rights should not be limited by these terms.

It should be understood that terms such as "include" or "have" do not preclude the presence or addition possibility of one or more other features or numbers, steps, actions, components, parts or combinations thereof.

Hereinafter, preferred embodiments of the present invention designed to solve the above problems will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a digital scan converter according to embodiments of the present invention, and FIG. 2 is a diagram showing an example of buffers included in the digital scan converter of FIG. 1.

1 to 2, the digital scan converter 10 according to embodiments of the present invention includes a scan line data storage unit 100, an input controller 200, a look-up table 300, and a plurality of buffers 400 ) And an interpolation unit 500.

The scan line data storage unit 100 may store scan line data SC_DATA 1 to SC_DATA N corresponding to each scan line SCL 1 to SCL N for the received ultrasound signal. The received ultrasound signal may be generated from an ultrasound signal reflected from the object after transmitting the ultrasound to the object. For example, the scan line may include first to N (N is a natural number) scan lines (SCL 1 to SCL N). The scan line data corresponding to the first scan line SCL1 may be the first scan line data SC_DATA1, and the scan line data corresponding to the second scan line SCL2 may be the second scan line data SC_DATA2. The scan line data corresponding to the third scan line SCL3 may be third scan line data SC_DATA3. Also, scan line data corresponding to the Nth scan line SCL N may be the Nth scan line data SC_DATA N. The first to N scanline data SC_DATA 1 to SC_DATA N may be stored in the scanline data storage 100.

The input controller 200 may provide selected scanline data S_SCD sequentially selected among the scanline data. For example, the input controller 200 may select the first scan line data SC_DATA1. When the input controller 200 selects the first scan line data SC_DATA1, scan line information SCL_INFO may be 1. When the scan line information SCL_INFO is 1, the selected scan line data S_SCD may be the first scan line data SC_DATA1, and the first scan line data SC_DATA1 may be stored in the first buffer 410. have.

Thereafter, the input controller 200 may sequentially select the second scan line data SC_DATA2. When the input controller 200 selects the second scan line data SC_DATA2, the scan line information SCL_INFO may be 2. When the scan line information SCL_INFO is 2, the selected scan line data S_SCD may be the second scan line data SC_DATA2, and the second scan line data SC_DATA2 may be stored in the second buffer 430. have.

In the digital scan converter 10 according to the present invention, while the data value of the target pixel is calculated using the first scan line data SC_DATA1 and the second scan line data SC_DATA2, the third scan line data SC_DATA3 is It may be stored in the third buffer 450 through the input controller 200.

3 and 4 are diagrams for describing operations of a plurality of buffers and a lookup table included in the digital scan converter of FIG. 1.

1 to 4, the lookup table 300 is based on the scan line information (SCL_INFO) provided from the input controller 200, location information (ISD_INFO) and distance information (DIS_INFO) of initial sample data corresponding to the target pixel. ).

The lookup table 300 may store location information (ISD_INFO) and distance information (DIS_INFO) of initial sample data. For example, the location information ISD_INFO of the initial sample data corresponding to the first pixel PX1 may be the first initial sample location IP1, and the distance information DIS_INFO corresponding to the first pixel PX1 may be It may be the first distance information D1. Also, the location information ISD_INFO of the initial sample data corresponding to the second pixel PX2 may be the second initial sample location IP2, and the distance information corresponding to the second pixel PX2 may include the second distance information ( D2). Further, the location information ISD_INFO of the initial sample data corresponding to the 25th pixel PX25 may be the 25th initial sample location IP25, and the distance information corresponding to the 25th pixel PX25 may be the 25th distance information ( D25).

The plurality of buffers 400 stores the selected scan line data (S_SCD), and the initial sample data (ISD) and the remaining sample data (from the selected scan line data (S_SCD) based on the location information (ISD_INFO) of the initial sample data ( RSD1, RSD2, RSD3).

For example, the target pixel may be the 25th pixel PX25. When the target pixel is the 25th pixel PX25, the location information ISD_INFO of the initial sample data corresponding to the 25th pixel PX25 may be the 25th initial sample location IP25. When the location information (ISD_INFO) of the initial sample data corresponding to the 25th pixel PX25 is the 25th initial sample location (IP25), the remaining sample data (RSD1, RSD2, RSD3) sets the 25th initial sample location (IP25). It may be scan line data corresponding to the three closest positions P25_1, P25_2, and P25_3 from the excluding 25th pixel PX25. In this case, scanline data corresponding to the three closest positions P25_1, P25_2, and P25_3 from the 25th pixel PX25 includes first remaining sample data RSD1, second remaining sample data RSD2, and third remaining It may be sample data (RSD3).

The interpolation unit 500 may provide interpolation data I_DATA determined according to initial sample data ISD, remaining sample data RSD1, RSD2, and RSD3 and distance information DIS_INFO.

For example, the target pixel may be the 25th pixel PX25. When the target pixel is the 25th pixel PX25, the remaining sample data RSD1, RSD2, and RSD3 are the first remaining sample data RSD1, the second remaining sample data RSD2, and the third remaining sample data RSD3. Can. In this case, the interpolation data based on the initial sample data (ISD), the first remaining sample data (RSD1), the second remaining sample data (RSD2), the third remaining sample data (RSD3), and the 25th distance information (D25) I_DATA) can be determined.

In the digital scan converter 10 according to the present invention, while two adjacent scan line data are stored in the buffer and the next scan line data is stored in the buffer, adjacent scan line data and information stored in the lookup table 300 are used. By determining the data of the target pixel, real-time ultrasound images can be generated while saving memory resources.

In one embodiment, the target pixel may be disposed between the current scanline corresponding to the scanline information SCL_INFO and the previous scanline corresponding to the previous scanline information provided before the scanline information SCL_INFO.

For example, when the scan line information SCL_INFO is 8, the selected scan line data S_SCD may be the eighth scan line data SC_DATA8, and the eighth scan line data SC_DATA8 is the second buffer 430. Can be stored in. In this case, the previous scan line information SCL_INFO may be 7. When the previous scan line information SCL_INFO is 7, the previous scan line may be the seventh scan line SCL7 and the current scan line may be the eighth scan line SCL8. In this case, data of target pixels disposed between the seventh scan line SCL7 and the eighth scan line SCL8 may be calculated using the seventh scan line data SC_DATA7 and the eighth scan line data SC_DATA8. have.

In one embodiment, a location corresponding to the initial sample data (ISD) may be placed on the previous scanline. For example, when the scan line information SCL_INFO is 8, the current scan line may be the eighth scan line SCL8, and the previous scan line may be the seventh scan line SCL7. In this case, the target pixel may be the 25th pixel PX25. When the target pixel is the 25th pixel PX25, the location corresponding to the initial sample data ISD may be the 25th initial sample location IP25. In this case, the position corresponding to the initial sample data ISD may be arranged in the seventh scan line SCL7 which is the previous scan line.

In one embodiment, the remaining sample data (RSD1, RSD2, RSD3) may include the first to third remaining sample data. The first remaining sample data RSD1 may be included in the selected scanline data S_SCD corresponding to the previous scanline. The second and third remaining sample data RSD2 and RSD3 may be included in the selected scanline data S_SCD corresponding to the current scanline.

For example, when the scan line information SCL_INFO is 8, the current scan line may be the eighth scan line SCL8, and the previous scan line may be the seventh scan line SCL7. In this case, the target pixel may be the 25th pixel PX25. When the target pixel is the 25th pixel PX25, the location corresponding to the initial sample data ISD may be the 25th initial sample location IP25. In this case, a position corresponding to the first remaining sample data RSD1 may be located on the seventh scan line SCL7, and the first remaining sample data RSD1 may be included in the seventh scan line data SC_DATA7. have.

In addition, in this case, a position corresponding to the second remaining sample data RSD2 may be located on the eighth scan line SCL8, and a position corresponding to the third remaining sample data RSD3 may also be located on the eighth scan line ( SCL8). Accordingly, the second and third remaining sample data RSD2 and RSD3 may be included in the eighth scanline data SC_DATA8 corresponding to the current scanline.

6 and 7 are diagrams showing an example of selected scan line data among scan line data.

6 and 7, when the initial sample data ISD is the N (N is a natural number) data among the selected scan line data S_SCD corresponding to the previous scan line, the first remaining sample data RSD1 is transferred. It may be N+1th data among the selected scan line data S_SCD corresponding to the scan line.

For example, when the initial sample data ISD is 243 corresponding to the N (N is a natural number) data among the seventh scanline data SC_DATA7 corresponding to the previous scanline, the first remaining sample data RSD1 is It may be 54, which is N+1 th data among the seventh scan line data SC_DATA7 corresponding to the previous scan line.

In one embodiment, when the second remaining sample data RSD2 is the N (N is a natural number) data among the selected scan line data S_SCD corresponding to the current scan line, the third remaining sample data RSD3 is currently It may be N+1th data among the selected scan line data S_SCD corresponding to the scan line.

For example, when the second remaining sample data RSD2 is 93 of the N (N is a natural number) data among the eighth scan line data SC_DATA8 corresponding to the current scan line, the third remaining sample data RSD3 is It may be 157, which is N+1th data among the eighth scan line data SC_DATA8 corresponding to the current scan line.

8 is a view for explaining the operation of the interpolation unit included in the digital scan converter of FIG. 1.

Referring to FIGS. 1 and 8, the interpolation unit 500 may provide initial sample data (ISD), remaining sample data (RSD1, RSD2, and RSD3) and interpolation data (I_DATA) determined according to distance information.

For example, the target pixel may be the 25th pixel PX25. When the target pixel is the 25th pixel PX25, the remaining sample data RSD1, RSD2, and RSD3 are the first remaining sample data RSD1, the second remaining sample data RSD2, and the third remaining sample data RSD3. Can. In this case, the interpolation data based on the initial sample data (ISD), the first remaining sample data (RSD1), the second remaining sample data (RSD2), the third remaining sample data (RSD3), and the 25th distance information (D25) I_DATA) can be determined.

For example, the distance between the position of the 25th pixel PX25 and the position corresponding to the initial sample data ISD may be 2.5, and it corresponds to the position of the 25th pixel PX25 and the first remaining sample data RSD1. The distance between the positions may be 2.5, the distance between the position of the 25th pixel PX25 and the position corresponding to the second remaining sample data RSD2 may be 1.25, and the position of the 25th pixel PX25 and the third The distance between positions corresponding to the remaining sample data RSD3 may be 1.25. In this case, the interpolation data I_DATA may be determined as a sum of values obtained by multiplying the initial sample data ISD and the first to third remaining sample data by weights. The weight may have a smaller value as the distance corresponding to the sample data from the 25th pixel PX25 is larger.

In the digital scan converter 10 according to the present invention, while two adjacent scan line data are stored in the buffer and the next scan line data is stored in the buffer, adjacent scan line data and information stored in the lookup table 300 are used. By determining the data of the target pixel, real-time ultrasound images can be generated while saving memory resources.

FIG. 9 is a view for explaining an example of a lookup table included in the digital scan converter of FIG. 1, and FIGS. 10 and 11 are location information and distance information of initial sample data in a lookup table included in the digital scan converter of FIG. 1. Is a diagram for explaining a method for storing, Figure 12 is a view for explaining a method using a look-up table included in the digital scan converter of FIG.

9 to 12, the look-up table 300 is the location information (ISD_INFO) and distance information (DIS_INFO) of the initial sample data for the first quadrant RG1 among the plurality of quadrants (RG1 to RG8) that divide the ultrasound image ).

In one embodiment, the initial sample data (ISD) and the remaining sample data (RSD1, RSD2) corresponding to the second quadrant (RG2) based on the location information (ISD_INFO) of the initial sample data for the first quadrant (RG1), RSD3).

For example, the ultrasound image may be divided into eight quadrants as shown in FIG. 9. In this case, the first and second quadrants RG1 and RG2 may be symmetrical with respect to the diagonal line. When the first and second quadrants RG1 and RG2 are symmetrical with respect to a diagonal line, the first and second quadrants RG1 are positioned using the location information (ISD_INFO) and distance information (DIS_INFO) of the initial sample data. Position information (ISD_INFO) and distance information (DIS_INFO) of initial sample data corresponding to the second quadrant RG2 may be generated. In this case, based on the location information (ISD_INFO) of the initial sample data for the first quadrant RG1, the initial sample data ISD and the remaining sample data RSD1, RSD2, RSD3 corresponding to the second quadrant RG2 are Can be created.

In one embodiment, interpolation data I_DATA corresponding to the second quadrant RG2 may be generated based on the distance information DIS_INFO for the first quadrant RG1.

For example, the location information (ISD_INFO) and distance information (DIS_INFO) of the initial sample data stored in the look-up table 300 are in the order of the pixels arranged along the first direction (D1) in the first pixel column (PR1). The second pixel column PR2 corresponding to the pixel column may be stored and stored in the order of pixels arranged in the second direction D2.

In addition, the location information (ISD_INFO) and the distance information (DIS_INFO) of the initial sample data stored in the look-up table 300 are stored in the order of the pixels arranged along the first direction (D1) in the first pixel column (PR1). In addition, the second pixel column PR2 corresponding to the pixel column may be stored in the order of pixels arranged in the first direction D1. That is, the location information ISD_INFO and the distance information DIS_INFO of the initial sample data may be stored in the order of pixels arranged along the first direction D1.

In addition, the location information (ISD_INFO) and the distance information (DIS_INFO) of the initial sample data stored in the look-up table 300 are stored in the order of the pixels arranged in the second direction (D2) in the first pixel column (PR1). In addition, the second pixel column PR2 corresponding to the pixel column may also be stored in the order of pixels arranged in the second direction D2. That is, the location information ISD_INFO and the distance information DIS_INFO of the initial sample data may be stored in the pixel order arranged along the second direction D2.

For example, the location information (ISD_INFO) and distance information (DIS_INFO) of the initial sample data stored in the look-up table 300 are in the order of the pixels arranged in the third direction (D3) in the first pixel column (PR1). The second pixel column PR2 corresponding to the next pixel column of the first pixel column PR1 may be stored and stored in the order of pixels arranged in the fourth direction D4.

In this case, the first and second quadrants RG1 and RG2 may be symmetrical with respect to the diagonal line. When the first and second quadrants RG1 and RG2 are symmetrical with respect to a diagonal line, the first and second quadrants RG1 are positioned using the location information (ISD_INFO) and distance information (DIS_INFO) of the initial sample data. Position information (ISD_INFO) and distance information (DIS_INFO) of initial sample data corresponding to the second quadrant RG2 may be generated. In this case, the location information (ISD_INFO) and distance information (DIS_INFO) of the initial sample data for the first quadrant RG1 may refer to the look-up table 300 while up-counting the address value corresponding to the pixel number, The location information ISD_INFO and the distance information DIS_INFO of the initial sample data for the second quadrant RG2 may refer to the look-up table 300 while down-counting the address value corresponding to the pixel number.

13 is a diagram illustrating a digital scan converter according to embodiments of the present invention.

Referring to FIG. 13, a digital scan converter according to an embodiment of the present invention includes a scan line data storage unit 100, an input controller 200, a lookup table 300, a plurality of buffers 400, and an interpolation unit ( 500) and the display buffer 600. The scan line data storage unit 100 may store scan line data corresponding to each scan line for the received ultrasound signal. The input controller 200 may provide selected scanline data S_SCD sequentially selected among scanline data. The lookup table 300 may provide location information (ISD_INFO) and distance information (DIS_INFO) of initial sample data corresponding to the target pixel based on the scan line information (SCL_INFO) provided from the input controller 200. The plurality of buffers 400 stores the selected scan line data (S_SCD), and the initial sample data (ISD) and the remaining sample data (from the selected scan line data (S_SCD) based on the location information (ISD_INFO) of the initial sample data ( RSD1, RSD2, RSD3). The interpolation unit 500 may provide interpolation data I_DATA determined according to initial sample data ISD, remaining sample data RSD1, RSD2, and RSD3 and distance information DIS_INFO. The display buffer 600 may store interpolation data I_DATA.

In one embodiment, the target pixel may be disposed between the current scanline corresponding to the scanline information SCL_INFO and the previous scanline corresponding to the previous scanline information SCL_INFO provided before the scanline information SCL_INFO. have. The location corresponding to the initial sample data (ISD) may be placed on the previous scan line.

14 is a view showing an operation method of a digital scan converter according to embodiments of the present invention.

1 and 14, in the operation method of the digital scan converter 10 according to an embodiment of the present invention, the scan line data storage unit 100 scan line data corresponding to each scan line for the received ultrasound signal It can be stored (S100). The controller 200 may provide selected scanline data S_SCD sequentially selected among scanline data (S110 ). The lookup table 300 may provide location information (ISD_INFO) and distance information (DIS_INFO) of initial sample data corresponding to the target pixel based on the scan line information (SCL_INFO) provided from the input controller 200 (S120). ). The plurality of buffers 400 store the selected scan line data S_SCD, and the initial sample data ISD and the remaining sample data (of the selected scan line data S_SCD) based on the location information ISD_INFO of the initial sample data ( RSD1, RSD2, RSD3) may be provided (S130). The interpolation unit 500 may provide interpolation data I_DATA determined according to initial sample data ISD, remaining sample data RSD1, RSD2, and RSD3 and distance information DIS_INFO (S140).

In one embodiment, the look-up table 300 may include location information (ISD_INFO) and distance information (DIS_INFO) of initial sample data for the first quadrant RG1 among the plurality of quadrants that divide the ultrasound image. The initial sample data ISD and the remaining sample data corresponding to the second quadrant RG2 may be generated based on the location information ISD_INFO of the initial sample data for the first quadrant RG1.

In the operation method of the digital scan converter 10 according to the present invention, while two adjacent scan line data are stored in the buffer and the next scan line data is stored in the buffer, adjacent scan line data and information stored in the lookup table 300 By determining the data of the target pixel using, it is possible to generate a real-time ultrasound image while saving memory resources.

15 is a diagram illustrating a digital scan conversion method according to embodiments of the present invention.

13 and 15, in the digital scan conversion method according to an embodiment of the present invention, the scan line data storage unit 100 may store scan line data corresponding to each scan line for the received ultrasound signal (S200). ). The input controller 200 may provide selected scanline data S_SCD sequentially selected among scanline data (S210 ). The lookup table 300 may provide location information (ISD_INFO) and distance information (DIS_INFO) of initial sample data corresponding to the target pixel based on scan line information (SCL_INFO) provided from the input controller 200 (S220). ). The plurality of buffers 400 stores the selected scan line data S_SCD, and the initial sample data ISD and the remaining sample data (of the selected scan line data S_SCD) based on the location information ISD_INFO of the initial sample data ( RSD1, RSD2, RSD3) may be provided (S230). The interpolation unit 500 may provide interpolation data I_DATA determined according to the initial sample data ISD, the remaining sample data RSD1, RSD2, and RSD3 and the distance information DIS_INFO (S240). The display buffer 600 may store interpolation data I_DATA (S250 ).

In one embodiment, the target pixel may be disposed between the current scanline corresponding to the scanline information SCL_INFO and the previous scanline corresponding to the previous scanline information SCL_INFO provided before the scanline information SCL_INFO. have. The remaining sample data RSD1, RSD2, and RSD3 may include first to third remaining sample data. The first remaining sample data RSD1 may be included in the selected scanline data S_SCD corresponding to the previous scanline. The second and third remaining sample data RSD2 and RSD3 may be included in the selected scanline data S_SCD corresponding to the current scanline.

10: digital scan converter 100: scan line data storage
200: input controller 300: lookup table
400: a plurality of buffers 500: interpolation
600: display buffer

Claims (15)

A scan line data storage unit for storing scan line data corresponding to each scan line for the received ultrasound signal;
An input controller providing sequentially selected scan line data among the scan line data;
A lookup table that provides location information and distance information of initial sample data corresponding to a target pixel based on scan line information provided from the input controller;
A plurality of buffers for storing the selected scan line data and providing the initial sample data and the remaining sample data among the selected scan line data based on location information of the initial sample data; And
And an interpolation unit providing interpolation data determined according to the initial sample data, the remaining sample data, and the distance information. According to claim 1,
The target pixel is disposed between the current scan line corresponding to the scan line information and a previous scan line corresponding to the previous scan line information provided before the scan line information. According to claim 2,
Digital scan converter, characterized in that the position corresponding to the initial sample data is disposed on the previous scan line. According to claim 2,
The remaining sample data includes the first to third remaining sample data,
The first remaining sample data is included in the selected scan line data corresponding to the previous scan line,
The second and third remaining sample data are included in the selected scan line data corresponding to the current scan line. According to claim 4,
When the initial sample data is the N (N is a natural number) th data among the selected scan line data corresponding to the previous scan line,
The first remaining sample data is N+1 th data among selected scan line data corresponding to the previous scan line. According to claim 4,
When the second remaining sample data is the N (N is a natural number) th data among the selected scan line data corresponding to the current scan line,
The third remaining sample data is N+1 th data among selected scan line data corresponding to the current scan line. According to claim 1,
The look-up table is a digital scan converter, characterized in that it includes location information and distance information of initial sample data for a first one of a plurality of quadrants that divide the ultrasound image. The method of claim 7,
And generating the initial sample data and the remaining sample data corresponding to the second quadrant based on the location information of the initial sample data with respect to the first quadrant. The method of claim 7,
And digital interpolation data corresponding to the second quadrant based on the distance information for the first quadrant. A scan line data storage unit for storing scan line data corresponding to each scan line for the received ultrasound signal;
An input controller providing sequentially selected scan line data among the scan line data;
A lookup table that provides location information and distance information of initial sample data corresponding to a target pixel based on scan line information provided from the input controller;
A plurality of buffers for storing the selected scan line data and providing the initial sample data and the remaining sample data among the selected scan line data based on location information of the initial sample data;
An interpolation unit providing interpolation data determined according to the initial sample data, the remaining sample data, and the distance information; And
And a display buffer for storing the interpolated data. The method of claim 10,
The target pixel is disposed between a current scan line corresponding to the scan line information and a previous scan line corresponding to previous scan line information provided before the scan line information,
Digital scan converter, characterized in that the position corresponding to the initial sample data is arranged on the previous scan line. Storing, by the scan line data storage unit, scan line data corresponding to each scan line for the received ultrasound signal;
Providing, by the input controller, sequentially selected scan line data among the scan line data;
A lookup table providing location information and distance information of initial sample data corresponding to a target pixel based on scan line information provided from the input controller;
A plurality of buffers storing the selected scanline data, and providing the initial sample data and the remaining sample data among the selected scanline data based on location information of the initial sample data; And
And an interpolation unit providing interpolation data determined according to the initial sample data, the remaining sample data, and the distance information. The method of claim 12,
The look-up table includes location information and distance information of initial sample data for a first one of a plurality of quadrants that divide an ultrasound image,
A method of operating a digital scan converter, characterized in that the initial sample data and the remaining sample data corresponding to the second quadrant are generated based on the location information of the initial sample data for the first quadrant. Storing, by the scan line data storage unit, scan line data corresponding to each scan line for the received ultrasound signal;
Providing, by the input controller, sequentially selected scan line data among the scan line data;
A lookup table providing location information and distance information of initial sample data corresponding to a target pixel based on scan line information provided from the input controller;
A plurality of buffers storing the selected scanline data, and providing the initial sample data and the remaining sample data among the selected scanline data based on location information of the initial sample data;
An interpolation unit providing interpolation data determined according to the initial sample data, the remaining sample data, and the distance information; And
And a display buffer storing the interpolated data. The method of claim 14,
The target pixel is disposed between a current scan line corresponding to the scan line information and a previous scan line corresponding to previous scan line information provided before the scan line information,
The remaining sample data includes the first to third remaining sample data,
The first remaining sample data is included in the selected scan line data corresponding to the previous scan line,
The second and third remaining sample data are included in the selected scan line data corresponding to the current scan line.

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