KR101461850B1 - Method and apparatus for exchanging protocol - Google Patents

Abstract

Provided are a method and an apparatus for exchanging a protocol. An image receiving device inserts a protocol into an image signal to transmit the protocol. The image transmitting device receives an image signal from the image receiving device to detect a protocol represented in the image signal. The protocol can be represented in a predetermined region in the image signal.

Description

[0001] METHOD AND APPARATUS FOR EXCHANGING PROTOCOL [0002]

The technical field relates to a protocol exchange technique, and more particularly, to a protocol exchange technique performed by an image transmission apparatus or an image receiving apparatus.

In a system for transmitting and receiving images, commands are transmitted to the camera to control the shot image. There are a method of using a separate control cable to transmit an instruction and a method of using a cable to transmit an image. There may be difficulties with the security of the system if a separate control cable is used.

A method using a cable for transmitting an image can use a single cable. The method of using a single cable may not have a correction for the reception error of the command. In the above method, a reception error is not corrected when a communication error occurs.

Korean Patent Application No. 10-2011-0030872 (published on March 24, 2011) discloses a surveillance camera control system. The disclosed invention includes a transmitter for transmitting a pan / tilt control signal of a surveillance camera, a transmitter for outputting an image transmitted from the surveillance camera, a receiver for receiving a control signal input to the address from the transmitter and controlling the surveillance camera, The receiver includes an address input unit for inputting an address in decimal data, a protocol setting unit for storing protocol information for each product to support a multiprotocol and selecting a specific protocol, And a display unit for displaying an operation state of the display unit.

One embodiment may provide a protocol exchange method and apparatus.

One embodiment can provide a protocol exchange method and apparatus using a video signal.

According to an aspect of the present invention, there is provided a method for exchanging a protocol of an image receiving apparatus, comprising the steps of: receiving a video signal from a video transmission apparatus; detecting a horizontal synchronizing signal in the video signal; generating a horizontal line signal based on the detected horizontal synchronizing signal; Generating a transmittable signal when the horizontal line signal coincides with a preset protocol transmission area in the video signal; displaying a transmission protocol in the protocol transmission area when the transmittable signal is generated; And transmitting the video signal, the transmission protocol of which is indicated, to the image transmission apparatus.

The protocol transmission region may be preset in a vertical retrace period (VBI) region in the video signal.

The protocol exchange method may further include counting a horizontal line of the video signal.

The generating of the transmittable signal may generate the transmittable signal if the counted horizontal line signal matches the protocol transmit region.

The step of displaying the transmission protocol may indicate the same two transmission protocols in the protocol transmission area.

The displayed transmission protocol may be the Manchester code scheme.

The protocol exchange method includes the steps of generating a receivable signal when the horizontal line signal coincides with a predetermined protocol receiving area in the video signal, detecting a reception protocol displayed in the protocol receiving area when the receivable signal is generated And detecting an instruction corresponding to the detected reception protocol.

The detecting the receiving protocol may include identifying data in the protocol receiving area and detecting the receiving protocol using the data.

The step of identifying the data may identify a signal of a predetermined threshold or more among the signals of the protocol receiving area as valid data.

The protocol transmission area and the protocol reception area may be preset in the VBI area in the video signal.

A cable used for transmitting the video signal in which the transmission protocol is indicated and a cable used for receiving the video signal from the video transmission apparatus may be the same.

According to another aspect of the present invention, an image receiving apparatus includes a communication unit for receiving an image signal from an image transmitting apparatus and transmitting the image signal having a transmission protocol to the image transmitting apparatus, and a controller for detecting a horizontal synchronizing signal in the image signal, And generates a transmittable signal when the horizontal line signal matches a preset protocol transmission area in the video signal. When the transmittable signal is generated, And a processing unit for displaying a transmission protocol.

According to another aspect of the present invention, there is provided a method of exchanging a protocol of a video transmission apparatus, comprising the steps of: receiving a video signal from a video receiving apparatus; detecting a horizontal synchronization signal in the video signal; Generating a receivable signal when the horizontal line signal coincides with a protocol receiving area preset in the video signal, detecting a reception protocol displayed in the protocol receiving area when the receivable signal is generated And detecting an instruction corresponding to the detected reception protocol.

The detecting the receiving protocol may include identifying data in the protocol receiving area and detecting the receiving protocol using the data.

The protocol exchange method may further comprise confirming the reception protocol.

The detected reception protocol may be two.

The two receiving protocols may be a first receiving protocol and a second receiving protocol.

The step of verifying the reception protocol may determine whether the first reception protocol and the second reception protocol are the same protocol.

The detecting of the command may detect the command corresponding to the identified receiving protocol if the first receiving protocol and the second receiving protocol are identified with the same receiving protocol.

The protocol receiving area may be preset in a vertical retrace period (VBI) area in the video signal.

The protocol exchange method may further include displaying a transmission protocol in a preset protocol transmission area in another video signal and transmitting the other video signal to the video reception device.

The transmission protocol may be the same as the reception protocol.

The other video signal may be generated by reflecting a command corresponding to the reception protocol.

The protocol exchange method may further include generating the other video signal.

According to another aspect of the present invention, an image transmission apparatus includes a communication unit for receiving a video signal from a video receiving apparatus, a controller for detecting a horizontal synchronizing signal in the video signal, generating a horizontal line signal based on the detected horizontal synchronizing signal, Generating a receivable signal when the horizontal line signal coincides with a protocol reception area preset in the video signal, detecting a reception protocol displayed in the protocol reception area when the receivable signal is generated, And a processing unit for detecting an instruction to be executed.

A protocol exchange method and apparatus using a single cable are provided.

A method and apparatus for exchanging protocols using specific areas of a video signal are provided.

1 illustrates a protocol exchange system according to an example.
2 is a block diagram of an image receiving apparatus according to an embodiment.
3 is a flowchart of a protocol exchange method according to an example.
4 shows the vertical timing of an analog video signal according to an example.
FIG. 5 illustrates a protocol transmission area and a protocol reception area set in the VBI area according to an example.
6 shows a method for indicating a transmission protocol or a method for detecting a receiving protocol according to an example.
FIG. 7 illustrates a transmission protocol displayed in a protocol transmission area according to an example.
Figure 8 illustrates the structure of a displayed transport protocol according to an example.
FIG. 9 illustrates a method of representing a transport protocol according to an example.
10 is a flowchart of a method of detecting a reception protocol of an image receiving apparatus according to an example.
11 is a flowchart of a method of detecting a received protocol using data of a protocol receiving area according to an example.
FIG. 12 shows a configuration diagram of an image receiving apparatus according to an example.
13 is a block diagram of an image transmission apparatus according to an embodiment.
14 is a flowchart of a protocol exchange method according to an embodiment,
15 is a flowchart of a method of detecting a received protocol using data of a protocol receiving area according to an example.
16 is a flowchart of a method of displaying a transmission protocol according to an exemplary embodiment on another video signal.
FIG. 17 shows a configuration diagram of an image transmission apparatus according to an example.

In the following, embodiments will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

Various modifications may be made to the embodiments described below. It is to be understood that the embodiments described below are not intended to limit the embodiments, but include all modifications, equivalents, and alternatives to them.

The terms used in the examples are used only to illustrate specific embodiments and are not intended to limit the embodiments. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

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

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. In the following description of the embodiments, a detailed description of related arts will be omitted if it is determined that the gist of the embodiments may be unnecessarily blurred.

1 illustrates a protocol exchange system according to an example.

The protocol exchange system 100 may include an image transmission apparatus 110 and an image reception apparatus 120. [

The image transmitting apparatus 110 and the image receiving apparatus 120 can transmit commands to different apparatuses by exchanging protocols.

The protocol may be included in the video signal and transmitted.

According to an aspect, the image receiving apparatus 120 may transmit a protocol corresponding to a command for controlling the operation of the camera to a video signal and transmit the same to the image transmitting apparatus 110. The image transmission apparatus 110 may transmit a protocol for the received protocol to another image signal generated by reflecting the command, and may transmit the protocol to the image reception apparatus 120.

The video receiving apparatus 120 will be described in detail with reference to Figs. 2 to 12 below.

The video transmission apparatus 110 will be described in detail with reference to Figs. 13 to 17 below.

2 is a block diagram of an image receiving apparatus according to an embodiment.

The image receiving apparatus 120 may include a communication unit 210, a processing unit 220, and a storage unit 230.

The communication unit 210 may be connected to other devices to transmit and receive data. For example, the communication unit 210 can receive a video signal from the video transmission apparatus 110. [ The received video signal may be an analog video signal.

The processing unit 220 may process the data received by the communication unit 210 or may process the data stored in the storage unit 230.

The storage unit 230 may store data received by the communication unit 210 or may store data processed by the processing unit 220. [

The communication unit 210, the processing unit 220, and the storage unit 230 will be described in detail below with reference to FIG. 3 to FIG.

The technical contents described above with reference to FIG. 1 can be applied as it is, so a detailed description will be omitted below.

3 is a flowchart of a protocol exchange method according to an example.

In step 310, the communication unit 210 can receive a video signal from the video transmission device 110. [ The video signal may be an analog video signal. For example, the video signal may be an analog video signal using a CVBS (Composite Video Banking Sync) transmission scheme. An analog video signal can have a specification of High Definition (HD) or Full HD (FHD).

The image transmission apparatus 110 and the communication unit 210 may be connected by a single cable. The cable may be a coaxial cable. That is, the communication unit 210 can receive the analog video signal transmitted through the coaxial cable from the video transmission device 110.

The communication unit 210 may convert the received analog video signal into a digital video signal. For example, the communication unit 210 may convert an analog video signal to a digital video signal using a video analog-to-digital converter (ADC).

In step 320, the processing unit 220 can detect a horizontal synchronizing signal in the video signal.

The horizontal synchronization signal will be described in detail below with reference to FIG.

In step 330, the processing unit 220 generates a horizontal line signal based on the horizontal synchronization signal.

The horizontal line signal can be used to distinguish the number of lines of the video signal.

The horizontal line signal will be described in detail below with reference to Fig.

In step 340, the processing unit 220 may count the horizontal line of the video signal. The processing unit 220 can determine the area to which the counted line corresponds by counting the horizontal line of the video signal. For example, if lines 11 to 25 of the video signal are vertical blanking interval (VBI) regions, the processing unit 220 may determine that the line counted at 17 corresponds to the VBI region.

In step 350, the processing unit 220 can generate a transmittable signal when the horizontal line signal coincides with a preset protocol transmission area in the video signal.

For example, a transmittable signal can be generated when the corresponding line of the counted horizontal line signal coincides with a line of a protocol transmission area preset by a user of the protocol exchange system. As another example, a receivable signal can be generated when the corresponding line of the counted horizontal line signal coincides with the line of the protocol receiving area preset by the user.

According to an aspect, the processing unit 220 may generate a transmittable signal when the counted horizontal line signal coincides with the protocol transmission region.

In step 360, the processing unit 220 may display the transmission protocol in the protocol transmission area if a transmittable signal is generated.

For example, the transmission protocol may be a command for controlling the camera of the image transmission device 110.

The processing unit 220 can display the transmission protocol in the protocol transmission area by indicating the transmission protocol as a bit stream. For example, the displayed transport protocol may use the Manchester code scheme. The transmission protocol to be displayed can indicate the transmission protocol considering the specification of the analog video signal to be transmitted.

In step 370, the communication unit 210 may transmit a video signal indicating the transmission protocol to the video transmission apparatus 110. The communication unit 210 may transmit a video signal having a transmission protocol indicated by a coaxial cable to the video transmission apparatus 110. The cable used to transmit the video signal with the transmission protocol indicated and the cable used to receive the video signal from the video transmission device 110 may be the same.

The transmitted video signal may be a signal converted into an analog signal.

The protocol may be transmitted to the image transmission apparatus 110 through the steps 310 to 370 described above.

A method by which the image receiving apparatus 120 receives the protocol transmitted by the image transmitting apparatus 110 will be described in detail with reference to FIG. 10 to FIG.

The technical contents described above with reference to Figs. 1 and 2 can be applied as they are, so that a more detailed description will be omitted below.

4 shows the vertical timing of an analog video signal according to an example.

The analog video signal may include serration pulses, equalizing pulses, a VBI region 410, and active lines.

For example, the vertical timing of an analog video signal of 750 lines is shown in Fig. The lines may be lines from the top of the image to the bottom of the image. That is, line 1 may be the uppermost line of the image.

Lines 1 to 5 may be surge pulses. The surge pulse may be a vertical sync pulse.

Lines 6 through 10 may be post-equalizing pulses. The equalizing pulse may be a pulse used to correct interlaced scanning. Lines 746 to 750 may be transpose equalizing pulses.

The lines 11 to 25 may be the VBI region 410.

Lines 26 through 745 may be active lines. Actual video signals may be included in the active lines.

4 illustrates a timing specification in which the number of lines in the vertical direction is 750, but the description in FIG. 4 is similar to the timing specification in which the number of lines in the vertical direction is 1125 and the timing specification in which the number of lines in the vertical direction is 1250 And can be applied in a modified manner.

For example, when the number of lines in the vertical direction is 1125, lines 1 to 5 are surge pulses, lines 6 to 10 are post-equalizing pulses, lines 11 to 40 are VBI regions, And lines 1121 through 1125 may be pre-equalizing pulses.

In another example, when the number of lines in the vertical direction is 1250, lines 1 to 5 are the surge pulses, lines 6 to 10 are the post-equalizing pulses, lines 11 to 165 are the VBI area, lines 166 to 1245 are the active lines, Lines 1246 through 1250 may be transpose equalizing pulses.

The technical contents described with reference to Figs. 1 to 3 can be applied as it is, and a detailed description will be omitted below.

FIG. 5 illustrates a protocol transmission area and a protocol reception area set in the VBI area according to an example.

The protocol transmission area 510 and the protocol reception area 520 may be preset in the VBI area 410 of the video signal based on the video reception device 120. [ The preset protocol transmission area 510 and the protocol reception area 520 may be set so that the image receiving apparatus 120 and the image transmitting apparatus 110 correspond to each other.

For example, the protocol transmission area 510 of the image reception device 120 may be set as a protocol reception area of the image transmission device 110. The protocol receiving area 520 of the image receiving apparatus 120 may be set as a protocol transmitting area of the image transmitting apparatus 110. The image transmission apparatus 110 can receive the transmission protocol transmitted from the image reception apparatus 120. [

In one aspect, when the VBI area 410 of the high definition analog video signal is 11 lines to 25 lines, the protocol transmission area 510 may be preset to 14 lines 511 and 15 lines 512. 14 line 511 may be a first protocol transmission area, and 15 line 512 may be a second protocol transmission area.

The protocol receiving area 520 may be set to 16 lines (521) and 17 lines (522). 16 line 521 may be a first protocol receiving area, and 17 line 522 may be a second protocol receiving area.

The technical contents described above with reference to Figs. 1 to 4 can be applied as they are, so that a more detailed description will be omitted below.

6 shows a method for indicating a transmission protocol or a method for detecting a receiving protocol according to an example.

The communication unit 210 can receive the video signal 610. [

The processing unit 220 may detect the horizontal synchronization signals 620 of the video signal 610.

For example, the processing unit 220 can detect the horizontal synchronization signal 620 by detecting a horizontal sync pulse of the line.

In another example, the processing unit 220 may detect the horizontal synchronization signal 620 by detecting a horizontal reference point of the line.

The processing unit 220 may count the horizontal line of the video signal 610. The processing unit 220 can count the horizontal line by counting the horizontal synchronization signal 620. [

The processing unit 220 may generate a horizontal line signal 630 based on the detected horizontal synchronization signal 620. The horizontal line signal 630 may indicate the number of lines of the received video signal 610.

According to an aspect, the processing unit 220 may generate the transmittable signal 640 when the horizontal line signal 630 coincides with a predetermined protocol transmission area 510 in the video signal 610. [

According to another aspect, the processing unit 220 may generate the receivable signal 650 when the horizontal line signal 630 coincides with a predetermined protocol receiving area 520 in the video signal 610.

A method of displaying the transmission protocol in the protocol transmission area 510 when a transmittable signal is generated will be described in detail with reference to Figs. 7 to 9 below.

A method of detecting a reception protocol displayed in the protocol reception area 520 when a reception enable signal is generated will be described in detail below with reference to Figs. 10 to 11. Fig.

The technical contents described above with reference to Figs. 1 to 5 may be applied as they are, so that a more detailed description will be omitted below.

FIG. 7 illustrates a transmission protocol displayed in a protocol transmission area according to an example.

In the above-described step 360, the processing unit 220 can display the transmission protocol in the first protocol transmission area 511. [ The transmitted transport protocol may be a pulse representing a bit stream. For example, the transport protocol displayed may be the Manchester code scheme.

The start point and period of the protocol can be based on the horizontal synchronization signal.

The transmission protocol displayed in the first protocol transmission area 511 may have the specifications as shown in Table 1 below.

form resolution Cycle starting point Data width Pulse width Total Protocol SD 720x525x30i 63.5us 10us 2us 1us 32us 720x625x25i 64us 10us 2us 1us 32us HD 1280x720x30p 44.44us 7us 2us 1us 32us 1280x720x25p 53.33us 7us 2us 1us 32us 1280x720x60p 22.22us 5us 1us 0.5us 16us 1280x720x50p 26.66us 5us 1us 0.5us 16us FHD 1920x1080x25p 35.55us 5us 1us 0.5us 16us 1920x1080x30p 29.62us 5us 1us 0.5us 16us

The configuration of the transmission protocol displayed in the first protocol transmission area 511 will be described below in detail with reference to FIG.

The technical contents described above with reference to Figs. 1 to 6 can be applied as they are, so that a more detailed description will be omitted below.

Figure 8 illustrates the structure of a displayed transport protocol according to an example.

Transmission protocol 800 may include a preamble 810, protocol data 820, parity bits 830 and stop bits 840. [

The value of the preamble 810 may vary according to the mode of the transmission protocol 800. For example, the normal mode may be 1010, and the extended mode and clear mode may be 1001.

The protocol data 820 may be a protocol corresponding to the command to be transmitted.

The parity bit 830 may be a bit for error detection of the protocol data 820. For example, the parity bit 830 may be an evev parity scheme.

The stop bit 840 may be a bit used to confirm the stable operation of the transmission protocol 800. [ The stop bit 840 may be 10 in normal mode and 01 in extended mode.

The transmission protocol 800 is described with reference to [Table 2] to [Table 4] below.

Table 2 shows the transmission protocol 800 of the normal mode. The bits in parentheses are part of the assigned transfer protocol 800 and the bits marked without brackets represent the Manchester code of a portion of the allocated transfer protocol 800.

The transmission protocol 800 in the normal mode may be a protocol for controlling the camera motion of the image transmission apparatus 110, the camera focus, and other characteristics of the camera. The motion of the camera may be a PTZ (Pan, Tilt and Zoom) movement of the camera.

Total 24 bits
(48 samples) Preamble
4 bit Data [3: 0] Data [11: 4] Data [15:12] Parity bit
2 bit Stop  beat
2 bit 1001_1001
(1010) motion
0101_0101
(0000) bottom
0101_0101_0101_0110
(0000_0001) level
0101_0101
(0000) 1001
(10) 1001
(10) top
0101_0101_0101_1001
(0000_0010) left
0101_0101_0101_1010
(0000_0011) 0110
(01) Right side
0101_0101_0110_0101
(0000_0100) 1001
(10) camera
Control
0101_0110
(0001) Open Aperture
0101_0101_0101_0110
(0000_0001) 0110
(01) Close aperture
0101_0101_0101_1001
(0000_0010) Focus forward
0101_0101_0101_1010
(0000_0011) 1001
(10) Focus back
0101_0101_0110_0101
(0000_0100) 0110
(01) Zoom Wide
0101_0101_0110_0110
(0000_0101) 1001
(10) Zoom telephoto
0101_0101_0110_1001
(0000_0110) Etc
Characteristic
0101_1001
(0010) Detection
0101_0101_0101_0110
(0000_0001) 0110
(01) scan
0101_0101_0101_1001
(0000_0010) Preset
0101_0101_0101_1010
(0000_0011) 1001
(10) pattern
0101_0101_0110_0101
(0000_0100) 0110
(01) power
0101_0101_0110_0110
(0000_0101) 1001
(10)

Table 3 shows the transport protocol 800 of the extended mode.

The transmission protocol 800 in the extended mode may be a protocol used for controlling the internal registers of the image transmission apparatus 110.

Total 24 bits
(48 samples) Preamble
4 bit Data [3: 0] Data [11: 4] Data [15:12] Parity bit
2 bit Stop  beat
2 bit 1001_0110
(1001) May change Changed according to protocol data 0110
(01)

Table 4 shows the transmission protocol 800 of the clear mode.

The clear mode transmission protocol 800 may be a protocol transmitted to the image transmission apparatus 110 before transmitting the normal mode or extended mode protocol. The transmission protocol 800 in the clear mode may be a transmission protocol 800 for transmission error confirmation.

Total 24 bits
(48 samples) Preamble
4 bit Data [15: 0] Parity bit
2 bit Stop  beat
2 bit 1001_0110
(1001) 0101_0101_0101_0101_0101_0101_0101_0101
(0000_0000_0000_0000) 1001
(10) 0110
(01)

The technical contents described with reference to Figs. 1 to 7 can be applied as they are, so that a more detailed description will be omitted below.

FIG. 9 illustrates a method of representing a transport protocol according to an example.

The processing unit 220 may display the same two transmission protocols 800 in the protocol transmission area 510 in order to increase the transmission stability of the transmission protocol 800. [

For example, the processing unit 220 may display the same transmission protocol 800 in the first protocol transmission area 511 and the second protocol transmission area 512, respectively.

A method of exchanging protocols by transmitting a transmission protocol has been described with reference to Figs. 2 to 9.

A method of exchanging the protocol by the video receiving apparatus 120 by receiving the receiving protocol will be described in detail with reference to Figs. 10 to 11. Fig.

The technical contents described with reference to Figs. 1 to 8 can be applied as they are, so that a more detailed description will be omitted below.

10 is a flowchart of a method of detecting a reception protocol of an image receiving apparatus according to an example.

The following step 1010 may be performed after step 340 described above is performed.

The processing unit 220 can generate the receivable signal 650 when the horizontal line signal 630 coincides with the protocol receiving area 520 preset in the video signal 610. In step 1010,

In step 1020, the processing unit 220 may detect the reception protocol displayed in the protocol receiving area 520 when the receivable signal 650 is generated.

The reception protocol may be a protocol transmitted by the image transmission apparatus 110.

In one aspect, the receiving protocol may be a response to a transmission protocol transmitted by the video receiving apparatus 120.

The receiving protocol may have a structure similar to the transmitting protocol 800.

The reception protocol is described with reference to Table 5 below.

Total 24 bits
(48 samples) Preamble
4 bit Data [3: 0] Data [11: 4] Data [15:12] Parity bit
2 bit Stop  beat
2 bit 1001_1001
(1010) motion
0101_0101
(0000) error
1010_1010_1010_1010
(1111_1111) level
0101_0101
(0000) 0110
(01) 0110
(01) Camera control
0101_0110
(0001) 1001
(10) Other features
0101_1001
(0010) 1001_0110
(1001) Extended mode
1010_1010
(1111) 0110
(01) 0110
(01) 1001_0110
(1001) Special mode
0101_0101
(0000) May change May change Changed according to protocol data 0110
(01)

The reception protocol indicating the error may indicate that there is an error in the transmission protocol transmitted from the image reception apparatus 120 to the image transmission apparatus 110.

A method of detecting a reception protocol will be described in detail below with reference to Fig.

In step 1030, the processing unit 220 may detect an instruction corresponding to the detected reception protocol. For example, an instruction corresponding to a reception protocol indicating an error may be a retransmission of a transmission protocol.

As another example, an instruction corresponding to a reception protocol indicating reception normal may be an instruction to transmit the next transmission protocol.

The technical contents described with reference to FIGS. 1 to 9 can be applied as they are, so that a more detailed description will be omitted below.

11 is a flowchart of a method of detecting a received protocol using data of a protocol receiving area according to an example.

The above-described step 1020 may include the following steps 1110 and 1120. [

In step 1110, the processing unit 220 may identify the data in the protocol receiving area 520. For example, the processing unit 220 may identify data of at least one of the first protocol receiving area 521 and the second protocol receiving area 522.

According to one aspect, signals may be distorted due to noise during the transmission of the video signal 610. The processing unit 220 can identify a signal in the protocol receiving area 520 that is equal to or larger than a predetermined threshold value as valid data.

In step 1120, the processing unit 220 may detect the receiving protocol using valid data.

The technical contents described above with reference to Figs. 1 to 10 can be applied as they are, so that a more detailed description will be omitted below.

FIG. 12 shows a configuration diagram of an image receiving apparatus according to an example.

The image receiving apparatus 120 may include an image ADC, an image output unit, a sink separator, a coaxial controller, a transmission protocol generator, and a reception protocol parser.

Video ADCs can convert analog video signals to digital video signals.

The video output unit can output the converted digital video signal.

The sync separator can detect the horizontal sync signal 620 of the video signal 610. The sink separator may generate a horizontal line signal 630.

The sink separator may generate the transmittable signal 640 if the horizontal line signal 630 matches the protocol transmit region 510. [ The sink separator may generate a receivable signal 650 when the horizontal line signal 630 coincides with the protocol receiving area 520.

The coaxial controller may set the value of the transport protocol 800 to be displayed in the protocol transmission area 510 when the transmittable signal 640 is generated. The coaxial controller can transmit the set value to the transmission protocol generator.

The coaxial controller can detect the data of the reception protocol displayed in the protocol reception area 520 when the reception enable signal 650 is generated. The coaxial controller can transmit the data of the detected reception protocol to the reception protocol parser.

The transport protocol generator may generate the actual transport protocol 800 through the values of the transportable signal 640 and the set transport protocol 800. The generated transmission protocol 800 may be a digital signal of 0 or 1. The transmission protocol may display the generated transmission protocol 800 on the video signal 640. The transport protocol generator can be connected to a cable.

The receiving protocol parser can receive the receivable signal and the data of the receiving protocol. The receiving protocol parser may determine whether the data of the receiving protocol represents a receiving protocol.

The receiving protocol parser may detect an instruction corresponding to the receiving protocol. The receiving protocol parser can send the detected command to the command processing device. For example, the command processing device may be the processing unit 220. [

The communication unit 210 and the processing unit 220 may include at least one of an image ADC, an image output unit, a sink separator, a coaxial controller, a transmission protocol generator, and a reception protocol parser.

The technical contents described above with reference to Figs. 1 to 11 can be applied as they are, so that a more detailed description will be omitted below.

13 is a block diagram of an image transmission apparatus according to an embodiment.

The image transmission apparatus 110 described above may include a communication unit 1310, a processing unit 1320, a storage unit 1330, and a camera 1340.

The communication unit 1310 can be connected to other devices to transmit and receive data. For example, the communication unit 1310 can receive a video signal or a protocol from the video receiving apparatus 120. The received video signal may be an analog video signal.

The processing unit 1320 may process the data received by the communication unit 1310 or may process the data stored in the storage unit 1330. [

The storage unit 1330 may store data received by the communication unit 1310 or may store data processed by the processing unit 1320. [

The camera 1340 can generate a video signal by capturing an image. The generated video signal may be a digital video signal.

The communication unit 1310, the processing unit 1320, the storage unit 1330, and the camera 1340 will be described in detail below with reference to FIG. 14 to FIG.

The technical contents described above with reference to Figs. 1 to 12 can be applied as they are, so a detailed description will be omitted below.

14 is a flowchart of a protocol exchange method according to an embodiment,

A predetermined protocol receiving area among the descriptions of the following steps 1410 to 1470 may be the protocol transmitting area 510 described above on the side of the image receiving apparatus 120.

In step 1410, the communication unit 1310 can receive the video signal from the video receiving apparatus 120. [ The received video signal may be an analog video signal.

The communication unit 1310 may convert an analog video signal to a digital video signal.

In step 1420, the processing unit 1320 can detect a horizontal synchronizing signal in the video signal.

Step 1420 may correspond to step 320 described above. The processing unit 1320 can correspond to the processing unit 220. That is, the description of the processing unit 1320 of the step 1420 may be replaced with the description of the processing unit 220 of the step 320.

In step 1430, the processing unit 1320 can detect a horizontal synchronizing signal in the video signal.

Step 1430 may correspond to step 330 described above. That is, the description of the processing unit 1320 of the step 1430 may be replaced with the description of the processing unit 220 of the step 330.

In step 1440, the processing unit 1320 may count the horizontal line of the video signal.

Step 1440 may correspond to step 340 described above. That is, the description of the processing unit 1320 of the step 1440 may be replaced with the description of the processing unit 220 of the step 340.

In step 1450, the processing unit 1320 can generate a receivable signal when the horizontal line signal coincides with a predetermined protocol receiving area in the video signal. The protocol receiving area can be preset in the VBI area in the video signal.

Step 1450 may correspond to step 1010 described above. That is, the description of the processing unit 1320 of the step 1450 may be replaced with the description of the processing unit 220 of the step 1010.

In step 1460, the processing unit 1320 can detect the reception protocol indicated in the protocol reception area when the reception availability signal is generated.

The receiving protocol may be a protocol transmitted by the video receiving apparatus 120. For example, the reception protocol to be detected may be the protocol of [Table 2] to [Table 5] described above.

Step 1460 may correspond to step 1020 described above. That is, the description of the processing unit 1320 of the step 1460 may be replaced with the description of the processing unit 220 of the step 1020. [

In step 1470, the processing unit 1320 may detect an instruction corresponding to the detected reception protocol.

Step 1470 may correspond to step 1030 described above. That is, the description of the processing unit 1320 of the step 1470 may be replaced with the description of the processing unit 220 of the step 1030.

The technical contents described above with reference to FIGS. 1 to 13 can be applied as they are, so that a more detailed description will be omitted below.

15 is a flowchart of a method of detecting a received protocol using data of a protocol receiving area according to an example.

The above-described step 1460 may include the following steps 1510 and 1520. [

According to aspects of the image transmission apparatus 110, the first protocol reception area and the second protocol reception area may correspond to the first protocol transmission area 511 and the second protocol transmission area 512, respectively.

In step 1510, the processing unit 1320 may identify the data of the protocol receiving area.

In step 1520, the processing unit 1320 may use the data to detect the receiving protocol.

Steps 1510 and 1520 may correspond to steps 1110 and 1120 described above. That is, the description of steps 1510 and 1520 may be replaced with a description of steps 1110 and 1120, respectively.

At step 1530, the processing unit 1320 may verify the receiving protocol.

According to an aspect, there may be two detection protocols. The two receiving protocols may be a first receiving protocol and a second receiving protocol. The first reception protocol and the second reception protocol may be reception protocols detected respectively from the first protocol reception area and the second protocol reception area.

The processing unit 1320 can check whether the first reception protocol and the second reception protocol are the same protocol.

In step 1470, the processing unit 1320 may detect an instruction corresponding to the identified receiving protocol if the first receiving protocol and the second receiving protocol are identified with the same receiving protocol.

The technical contents described above with reference to Figs. 1 to 14 may be applied as they are, so that a more detailed description will be omitted below.

16 is a flowchart of a method of displaying a transmission protocol according to an exemplary embodiment on another video signal.

The following step 1610 may be performed after the above-described step 1470 is performed.

The camera 1340 may generate another image. The other image may be an image different from the image of the above-mentioned image signal.

According to an aspect, the camera 1340 may generate another image reflecting a command corresponding to the reception protocol received from the image receiving apparatus 120. [ That is, the other image may be an image reflecting an instruction corresponding to the reception protocol.

For example, if the instruction corresponding to the receive protocol is for the motion of the camera 1340, the other image may be an image that reflects the motion of the camera 1340.

According to another aspect, when the reception protocol received from the image reception device 120 is confirmed to be inaccurate, the camera 1340 can generate another image without changing the setting for the image capture.

In step 1610, the processing unit 1320 may generate another video signal using another video. The other video signal may be a signal generated by reflecting a command corresponding to the reception protocol.

In step 1620, the processing unit 1320 may display the transmission protocol in a preset protocol transmission area in another video signal.

For example, the transmission protocol to be displayed may be the protocol of [Table 5] described above.

As another example, the transport protocol displayed may be the same protocol as the received transport protocol.

According to aspects of the image transmission apparatus 110, the protocol transmission region may correspond to the protocol receiving region 510 of the image receiving apparatus 120 described above.

According to an aspect, the processing unit 1320 may display the same two transmission protocols in the first protocol transmission region and the second protocol transmission region of the protocol transmission region, respectively.

Step 1620 may correspond to step 360 described above. That is, the description of step 1620 may be replaced with the description of step 360 described above.

In step 1630, the communication unit 1310 may transmit another video signal to the video receiving apparatus 120. [

According to an aspect, the communication unit 1310 can convert a digital other video signal into another analog video signal and transmit the same.

The technical contents described with reference to Figs. 1 to 15 can be applied as they are, so that a more detailed description will be omitted below.

FIG. 17 shows a configuration diagram of an image transmission apparatus according to an example.

The image transmission apparatus 110 may include a camera, a storage unit, a horizontal line counter, a coaxial controller, a reception protocol parser, a transmission protocol generator, an image DAC (digital to analog converter), and a sink separator.

The camera may correspond to the camera 1340 described above. The camera can transmit the same digital data to the storage unit and the horizontal line counter.

The storage unit may correspond to the storage unit 1330 described above.

The horizontal line counter can display horizontal line signals using digital data. The horizontal line counter can display and adjust the horizontal line signal displayed according to the specification of the analog video signal to be transmitted.

The horizontal line counter can send a transmittable signal to the coaxial controller.

The sync separator can detect the horizontal synchronizing signal of the video signal. The sink separator can generate a horizontal line signal. The sink separator can generate a receivable signal when the horizontal line signal matches the protocol receiving area. The sink separator can transmit the receivable signal to the coaxial controller.

The coaxial controller can detect the data of the reception protocol displayed in the protocol reception area when the reception enable signal is generated. The coaxial controller can transmit the data of the detected reception protocol to the reception protocol parser.

The coaxial controller can set a transmission protocol value to be displayed in the protocol transmission area when a transmittable signal is generated. The coaxial controller can transmit the set value to the transmission protocol generator.

The transport protocol generator can generate the actual transport protocol through the values of the transportable signal and the set transport protocol. The generated transmission protocol may be a digital signal of 0 or 1. The transmission protocol can display the generated transmission protocol in another video signal.

The receiving protocol parser can receive the receivable signal and the data of the receiving protocol. The receiving protocol parser may determine whether the data of the receiving protocol represents a receiving protocol.

The receiving protocol parser may detect an instruction corresponding to the receiving protocol. The receiving protocol parser can send the detected command to the command processing device. For example, the command processing device may be a processing unit 1320. [

The communication unit 1310 and the processing unit 1320 may include at least one of a camera, a storage unit, a horizontal line counter, a coaxial controller, a reception protocol parser, a transmission protocol generator, an image DAC, and a sink separator.

The technical contents described above with reference to Figs. 1 to 16 can be applied as they are, so that a more detailed description will be omitted below.

The apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the apparatus and components described in the embodiments may be implemented within a computer system, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA) A programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For ease of understanding, the processing apparatus may be described as being used singly, but those skilled in the art will recognize that the processing apparatus may have a plurality of processing elements and / As shown in FIG. For example, the processing unit may comprise a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as a parallel processor.

The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.

100: protocol exchange system
110: Video transmission device
120: Video receiving device
210:
220:
230:
1310:
1320:
1330:
1340: Camera

Claims (20)

A protocol exchange method of a video receiving apparatus,
Receiving a video signal from a video transmission device;
Detecting a horizontal synchronizing signal in the video signal;
Generating a horizontal line signal based on the detected horizontal synchronization signal;
Generating a transmittable signal when the horizontal line signal coincides with a protocol transmission region preset in a vertical retrace period (VBI) region in the video signal;
Displaying the same two transport protocols in the protocol transmission area when the transportable signal is generated; And
Transmitting the video signal indicated by the transmission protocol to the video transmission apparatus
/ RTI >
delete The method according to claim 1,
Counting a horizontal line of the video signal
Further comprising:
Wherein generating the transmittable signal generates the transmittable signal when the counted horizontal line signal matches the protocol transmit region.
delete The method according to claim 1,
Wherein the displayed transmission protocol is a Manchester code scheme.
The method according to claim 1,
Generating a receivable signal when the horizontal line signal coincides with a protocol receiving area preset in the vertical retrace period area;
Detecting a reception protocol displayed in the protocol reception area when the reception enable signal is generated; And
Detecting an instruction corresponding to the detected reception protocol
Further comprising the steps of:
The method according to claim 6,
Wherein the detecting the receiving protocol comprises:
Identifying data of the protocol receiving area; And
Detecting the receiving protocol using the identified data
/ RTI >
8. The method of claim 7,
Wherein identifying the data identifies a signal of a predetermined threshold or more among the signals of the protocol receiving area as valid data.
delete The method according to claim 1,
Wherein the cable used to transmit the video signal with the transmission protocol is the same and the cable used to receive the video signal from the video transmission device is the same.
A communication unit for receiving a video signal from a video transmission apparatus and transmitting the video signal indicated by a transmission protocol to the video transmission apparatus; And
The method comprising the steps of: detecting a horizontal synchronizing signal in the video signal, generating a horizontal line signal based on the detected horizontal synchronizing signal, and synchronizing the horizontal line signal with a predetermined protocol transmission area in a vertical retrace interval (VBI) And generates a transmittable signal when the transmittable signal is generated, and displays the same two transmittable protocols in the protocol transmittal region when the transmittable signal is generated
And an image pickup device.
A protocol exchange method of a video transmission apparatus,
Receiving a video signal from a video receiving apparatus;
Detecting a horizontal synchronizing signal in the video signal;
Generating a horizontal line signal based on the detected horizontal synchronization signal;
Generating a receivable signal when the horizontal line signal coincides with a protocol reception region preset in a vertical retrace period (VBI) region in the video signal;
Detecting two reception protocols displayed in the protocol reception area when the reception enable signal is generated; And
Detecting an instruction corresponding to the detected reception protocol
/ RTI >
13. The method of claim 12,
The step of detecting the receiving protocol
Identifying data of the protocol receiving area; And
Detecting the two receiving protocols using the identified data
/ RTI >
14. The method of claim 13,
Confirming whether the two reception protocols are the same protocol among each other
Further comprising:
Wherein detecting the command detects the instruction corresponding to the identified receiving protocol if the two receiving protocols are identified to the same receiving protocol with respect to each other.
delete 13. The method of claim 12,
Displaying the same two transmission protocols in a preset protocol transmission region in a vertical retrace period region in another video signal; And
Transmitting the other video signal to the video receiving apparatus
Further comprising the steps of:
17. The method of claim 16,
Wherein the transport protocol is the same as the receive protocol.
17. The method of claim 16,
Wherein the other video signal is generated by reflecting a command corresponding to the reception protocol.
17. The method of claim 16,
Generating the other video signal
Further comprising the steps of:
A communication unit for receiving a video signal from the video receiving apparatus; And
And a horizontal line signal generation unit for generating a horizontal line signal based on the detected horizontal synchronous signal, wherein the horizontal line signal is synchronized with a protocol reception area preset in a vertical retrace period (VBI) area in a video signal, And a processor for detecting two reception protocols indicated in the protocol reception area when the reception enable signal is generated and for detecting an instruction corresponding to the detected reception protocol,
And transmitting the image data.

Images