System and Method for Transmitting Efficient Multiple Form data in Avionics System

Abstract

The present invention relates to a system and method for simultaneously transmitting high-resolution video data in an avionics system and control / status data including control or status information of an aircraft. An efficient multiple data transmission system in an avionics system according to an embodiment of the present invention comprises: a mixing unit that generates mixed data by formatting video data including image information and control / state data (control and state data) including control and state information into a frame format and combining them in frame units; a transmitting unit that transmits the mixed data generated by the mixing unit in a frame format; a receiving unit that receives the mixed data in a frame format from the transmitting unit; and a separating unit that de-frames the mixed data received by the receiving unit in frame units to extract the video data and control / state data, respectively.

Description

Technology Field

[0001] The present invention relates to an avionics system, and more specifically, to an efficient mixed transmission system and method for video data and control / status data in an avionics system. Background Technology

[0003] Avionics (Aviation Electronics) systems refer to the entire electronic system installed on an aircraft to support flight, navigation, communication, surveillance, and weapons operation. In other words, it is a system that enables the aircraft to be controlled and operated using electronic equipment rather than as a simple machine.

[0004] At this time, the avionics system transmits video data to utilize visual information for safety, operational execution, and pilot situational awareness in the aircraft mission and flight environment. This is intended to transmit video information collected from the aircraft's sensors in real time to displays, mission computers, and data links.

[0005] Video data transmission in avionics systems is used for devices such as radar images, EO / IR camera images, and HUD / HMD displays, where the ARINC-818 protocol is widely used as a standard. In other words, when transmitting video data in real time in avionics systems, the ARINC-818 protocol is used to periodically transmit video data according to the video refresh rate.

[0006] Figure 1 is a diagram showing video data transmitted in a conventional avionics system. Figure 2 is a diagram showing the frame format of the video data transmitted in Figure 1.

[0007] Referring to FIG. 1, in a conventional avionics system, video data transmitted is transmitted as a plurality of video data (20)(30) in accordance with a vertical synchronization signal (V-sync) (10), and when the first video frame_0 of the first video data (20) is transmitted to the last video frame_N, IDLE data (40) is transmitted until the start of the next second video data (30).

[0008] At this time, each frame format of the first and second video data (20)(30) being transmitted is divided into several fields and transmitted as shown in FIG. 2, and each field has a defined structure. Each field includes an SOF field indicating the start of the video data frame, an FC Header field providing control / identification information of the field, a Payload_last field providing the actual video data (pixel data) being transmitted, a CRC field that detects errors and guarantees the integrity of the data, and an EOF field indicating the end of the video data frame.

[0009] Then, the input video data or self-generated video data is generated in the frame format of FIG. 2 in an optical framer, and converted into parallel data or serial data through an optical transceiver (Serializer / Deserializer: SerDes) for transmission. At this time, the optical framer is a device that formats the data stream to fit the frame structure of an optical communication protocol and de-frams it. That is, the optical framer bundles the first and second video data (20) (30) to be transmitted into frames and passes them to an optical transmitter, or conversely, deframs the received signal and transmits it to an upper layer.

[0010] While video data transmission in such existing avionics systems can guarantee real-time performance and transmit high-speed, uncompressed video data, there is a problem with inefficient transmission channels due to the transmission of only video data.

[0011] In other words, because the transmission of video data and control / status data (control and status information) in avionics systems differ in nature and purpose, it is common practice to operate them with separate protocols and channels. For example, video data is transmitted periodically over high-speed links such as ARINC-818, while control / status data is transmitted as needed over separate buses such as ARINC-429 or ADFX. Prior art literature

[0013] Registered Patent Publication No. 10-1901525 (Registered Sep. 17, 2018) Registered Patent Publication No. 10-1007218 (Registered Jan. 4, 2011) The problem to be solved

[0014] The present invention aims to provide a system and a method for simultaneously transmitting high-resolution video data in an avionics system and control / status data including control or status information of an aircraft.

[0015] The present invention aims to provide a multiple data transmission system and a method in an avionics system that can utilize the channel more efficiently by transmitting video data over a high-speed optical channel and transmitting control / status data during IDLE sections (image blanking sections) where video data is absent.

[0016] The present invention aims to provide a multiple data transmission system and a method in an avionics system that transmits control / status data after the transmission of transmitted video data is completed and before the transmission of the next video data begins, thereby enabling the transmission of control / status data without a separate interface between electronic equipment. means of solving the problem

[0018] An efficient multiple data transmission system in an avionics system according to an embodiment of the present invention comprises: a mixing unit that generates mixed data by formatting video data including image information and control / state data (control and state data) including control and state information into a frame format and combining them in frame units; a transmitting unit that transmits the mixed data generated by the mixing unit in a frame format; a receiving unit that receives the mixed data in a frame format from the transmitting unit; and a separating unit that de-frames the mixed data received by the receiving unit in frame units to extract the video data and control / state data, respectively.

[0019] The above mixing unit is composed of an optical framer, and the above separation unit is composed of an optical deframer.

[0020] The above mixed data is configured in a frame format.

[0021] The above mixed data includes video data composed of multiple frames; and control / state data located between the video data and other adjacent video data.

[0022] Each frame of the above video data is composed of a plurality of fields, and the fields include: an SOF field indicating the start of the video data frame; an FC Header field providing control / identification information of the field; a Payload_last field providing the actual video data to be transmitted; a CRC field that detects errors and ensures the integrity of the data; an EOF field indicating the end of the video data frame; and an IDLEs field for maintaining a stable communication connection.

[0023] The above control / state data is composed of a plurality of fields, and the fields include: a SOF_d field indicating the start of the control / state data frame; a Size_infor field providing information on the size of the data interval of the control / state data frame; a Data field providing the actual control / state data being transmitted; a CRC-32 field that detects errors and guarantees the integrity of the data; and an EOF_d field indicating the end of the control / state data frame.

[0024] The above-mentioned receiver converts the mixed data received from the optical channel into parallel data for parallel communication.

[0025] The above-mentioned transmitter converts the mixed data into serial data for serial communication and transmits it via an optical channel.

[0026] An efficient multiple data transmission method in an avionics system according to an embodiment of the present invention comprises: a process in a separation unit of formatting video data including image information and control / state data including control and state information (control and state data) into a frame format and combining them in frame units to generate mixed data; a process in a transmission unit of transmitting the mixed data in a frame format; a process in a reception unit of receiving the transmitted mixed data in a frame format; and a process in a separation unit of extracting the video data and the control / state data from the received mixed data, respectively.

[0027] The process of generating the above mixed data includes: a process of formatting the data streams of the video data and control / status data to fit the optical communication protocol frame structure; and a process of grouping the formatted video data and control / status data into frame units to generate the mixed data in a frame format.

[0028] The process of transmitting via the optical channel includes: a process of transmitting the control / status data continuously after transmitting the last frame of any video data; and a process of transmitting the first frame of the next any video data after the transmission of the control / status data is completed.

[0029] Between the video data and the control / status data, there are at least 5 IDLE data for data decoding on the receiving side.

[0030] The process of transmitting via the optical channel includes: a process of transmitting the mixed data in frame units in accordance with a vertical synchronization signal (V-sync); a process of checking whether the transmission of one video data in the transmitted mixed data is completed; and, if the result of the check confirms that the transmission of one video data is completed, a process of checking whether the transmission of control / status data in the transmitted mixed data is completed.

[0031] Each frame of the above video data has a plurality of fields, and the fields are,

[0032] It includes an SOF field indicating the start of a video data frame; an FC Header field providing control / identification information for the field; a Payload_last field providing the actual video data to be transmitted; a CRC field that detects errors to ensure the integrity of the data; an EOF field indicating the end of a video data frame; and IDLEs fields for maintaining a stable communication connection.

[0033] The process of confirming whether the transmission of the above-mentioned video data is completed includes: confirming the start of the transmission of the video data through an SOF field included in the frame of the video data; confirming that the transmission of the above-mentioned video data is completed through an EOF field included in the frame of the video data; and confirming that the transmission of the above-mentioned video data is completed when both the SOF field and the EOF field are confirmed.

[0034] The process of extracting the video data and control / status data, respectively, includes: a process of confirming the start of transmission of video data through an SOF field included in a frame of video data in the received mixed data; a process of confirming that the transmission of one video data has ended through an EOF field included in a frame of video data in the received mixed data; and a process of extracting one video data when both the SOF field and the EOF field are confirmed.

[0035] The above control / state data comprises a plurality of fields, and the fields include: a SOF_d field indicating the start of the control / state data frame; a Size_infor field providing information on the size of the data interval of the control / state data frame; a Data field providing the actual control / state data to be transmitted; a CRC-32 field that detects errors and guarantees the integrity of the data; and an EOF_d field indicating the end of the control / state data frame.

[0036] The process of confirming whether the transmission of the control / status data is completed includes: confirming the start of transmission of the control / status data through the SOF_d field included in the frame of the control / status data; confirming that the transmission of the control / status data has ended through the EOF_d field included in the frame of the control / status data; and confirming that the transmission of the control / status data is completed when both the SOF_d field and the EOF_d field are confirmed.

[0037] The process of extracting the video data and control / state data, respectively, includes: a process of confirming the start of transmission of the control / state data through the SOF_d field included in the control / state data in the received mixed data; a process of confirming that the transmission of the control / state data has ended through the EOF_d field included in the control / state data in the received mixed data; and a process of extracting the control / state data when both the SOF_d field and the EOF_d field are confirmed.

[0038] The process of extracting the video data and control / state data, respectively, includes: a process of de-framing the data stream of the mixed data into frame units to match the optical communication protocol frame structure; and a process of extracting the video data and control / state data, respectively.

[0039] The above mixed data includes video data composed of multiple frames, and control / state data located between the video data and other adjacent video data. Effects of the invention

[0041] According to an embodiment of the present invention, not only is the real-time nature of the video guaranteed by transmitting video data at high speed using an optical channel, but the channel can also be used efficiently by transmitting control / status data including aircraft control and status information in the IDLE section for data decoding at the receiving end, which is positioned between video data transmitted during one refresh rate.

[0042] Through this, the present invention uses an optical channel, making it resistant to external electrical interference and noise. It can generate mixed data by mixing control / status data, which includes aircraft control and status information, with video data at high speed and transmit it together with the video data, thereby providing the effect of transmitting control / status data without the need for a separate interface for transmitting control / status data. Brief explanation of the drawing

[0044] Figure 1 is a diagram showing video data transmitted in a conventional avionics system. FIG. 2 is a diagram showing the frame format of video data transmitted in FIG. 1. FIG. 3 is a diagram showing the configuration of an efficient multiple data transmission system in an avionics system according to an embodiment of the present invention. FIG. 4 is a diagram showing the frame format of the mixing data generated in the mixing section of FIG. 3. FIG. 5 is a diagram illustrating an efficient multiple data transmission method in an avionics system according to an embodiment of the present invention. FIG. 6 is a diagram for explaining in detail the process of transmitting mixed data in FIG. 5. Specific details for implementing the invention

[0045] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms, and the embodiments of the present invention are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. To explain the invention in detail, the drawings may be exaggerated, and like reference numerals in the drawings refer to like elements.

[0046] FIG. 3 is a diagram showing the configuration of an efficient multiple data transmission system in an avionics system according to an embodiment of the present invention. FIG. 4 is a diagram showing the frame format of mixed data generated in the mixing section of FIG. 3.

[0047] Referring to FIG. 3, an efficient multiple data transmission system in an avionics system according to an embodiment of the present invention may be divided into a transmitting side including a mixing unit (100) and a transmitting unit (200), and a receiving side including a receiving unit (300) and a separating unit (400).

[0048] In this case, the transmitting side may be an aircraft-mounted device, such as a camera, sensor, or mission computer. The receiving side may be an aircraft internal display, storage device, or control device, or a Ground Control Station (GCS).

[0049] Additionally, the mixing unit (100) may be a framer that formats the data stream to match the optical communication protocol frame structure to create a frame structure, and preferably, it may be an optical framer that maps the data stream to an optical communication frame (e.g., SUNET / SDH, OTH). And the separation unit (400) may be a de-framer that de-frames and restores the received frame back to the original data, and preferably, it may be an optical de-framer that deframes the received frame from the optical receiver.

[0050] The mixing unit (100) generates mixed data by mixing video data that is input from the outside or generated by the aircraft itself, and control and status data (control / status data) that includes control or status information of the aircraft. At this time, the mixing unit (100) generates mixed data by formatting the data streams of the video data and control / status data into a frame format that matches the optical communication protocol frame structure, and by bundling the video data and control / status data into frame units.

[0051] Referring together with FIG. 4, the mixed data includes a first video data (20) composed of multiple (N+1) frames and control / state data (50) located between the first video data (20) and another second video data (30) adjacent to it.

[0052] At this time, each frame of the first and second video data (20)(30) is divided into several fields, and each field has a defined structure. Each field includes an SOF field indicating the start of the video data frame, an FC Header field providing control / identification information for the field, a Payload_last field providing the actual video data (pixel data) being transmitted, a CRC field that detects errors and guarantees data integrity, an EOF field indicating the end of the video data frame, and an IDLEs field for maintaining a stable communication connection. The item size of the SOF field and the EOF field is 4 bytes, the item size of the FC Header field is 24 bytes, the item size of the Payload_last field is a maximum of 2048 bytes, and the item size of the IDLEs field is 20 bytes.

[0053] Additionally, the control / status data (50) is also divided into multiple fields, and each field has a defined structure. Each field includes an SOF_d field indicating the start of the control / status data frame, a Size_infor field providing information on the size of the Data section of the control / status data frame, a Data field providing actual transmitted control / status data (aircraft control, status information, etc.), a CRC-32 field that detects errors and guarantees data integrity, and an EOF_d field indicating the end of the control / status data frame. The item size of the SOF_d field and the EOF_d field is 4 bytes, the item size of the Size_infor field is 4 bytes, the item size of the Data field is variable depending on the Size_infor field and can be up to 2048 bytes, and the item size of the CRC-32 field is 4 bytes, and data integrity is guaranteed through CRC-32 calculation from the Size_infor field to the CRC-32 field.

[0054] The transmitting unit (200) transmits the mixed data generated by the mixing unit (100) to the optical channel in frame units. At this time, the transmitting unit (200) converts the mixed data generated as parallel data into serial data for serial communication.

[0055] The receiver (300) receives mixed data received in frame units. At this time, the receiver (300) converts the mixed data received as serial data into parallel data for parallel communication.

[0056] The separation unit (400) extracts video data and control / status data, respectively, from the mixed data received from the receiving unit (300). At this time, the control / status data may be data containing control or status information of the aircraft.

[0057] The separation unit (400) de-frams the data stream of the mixed data into frames according to the optical communication protocol frame structure, extracts video data and control / status data respectively, and transmits them to the upper layer.

[0059] Hereinafter, an efficient multiple data transmission method in an avionics system according to an embodiment of the present invention is described. The efficient multiple data transmission method in an avionics system according to an embodiment of the present invention may be a method for processing a received signal using the efficient multiple data transmission system in an avionics system described above. Since the aforementioned details regarding the efficient multiple data transmission system in an avionics system may be applied as is, the description of redundant details may be omitted.

[0060] FIG. 5 is a diagram illustrating an efficient multiple data transmission method in an avionics system according to an embodiment of the present invention. FIG. 6 is a diagram illustrating in detail the process of transmitting mixed data in FIG. 5.

[0061] Referring to FIG. 5, an efficient multiple data transmission method in an avionics system according to an embodiment of the present invention generates mixed data by mixing video data and control / status data generated from an external input or the aircraft itself in a mixing unit (100) (S100). That is, the mixing unit (100) generates mixed data by formatting the data streams of video data and control / status data into a frame format according to the optical communication protocol frame structure and bundling the video data and control / status data into frames.

[0062] Here, the mixed data includes a first video data composed of multiple (N+1) frames and control / status data (50) located between the first video data and another second video data adjacent to it. The mixed data is generated as parallel data capable of parallel communication. Additionally, the control / status data may include control or status information of the aircraft.

[0063] Meanwhile, each frame of video data is composed of several fields, each field including an SOF field indicating the start of the video data frame, an FC Header field providing control / identification information of the field, a Payload_last field providing the actual video data (pixel data) being transmitted, a CRC field that detects errors to ensure data integrity, an EOF field indicating the end of the video data frame, and an IDLEs field for maintaining a stable communication connection.

[0064] Additionally, the control / status data (50) is configured in the form of a frame divided into multiple fields, each field including a SOF_d field indicating the start of the control / status data frame, a Size_infor field providing information on the size of the Data section of the control / status data frame, a Data field providing actual transmitted control / status data (aircraft control, status information, etc.), a CRC-32 field that detects errors and guarantees the integrity of the data, and an EOF_d field indicating the end of the control / status data frame.

[0065] Next, the transmitting unit (200) transmits the mixed data in frames to the optical channel (S200). At this time, the transmitting unit (200) converts the mixed data generated as parallel data into serial data capable of serial communication.

[0066] Referring to FIG. 6, the process (S200) of transmitting mixed data to an optical channel from the transmitting unit (200) is described in detail as follows.

[0067] In the transmitting unit (200), mixed data is transmitted in frames in accordance with the vertical synchronization signal (V-sync) (10) (S210).

[0068] Next, it is checked whether the transmission of one video data (first video data) is completed in the mixed data being transmitted (S220). To do this, the transmitting unit (200) can check the start of the transmission of the video data through the SOF field included in the frame of the video data and check that the transmission of one video data is completed through the EOF field included in the frame of the video data. That is, if both the SOF field and the EOF field are confirmed in the transmitted video data, it is confirmed that the transmission of one video data (first video data) is completed.

[0069] And if, upon verification (S220), it is confirmed that the transmission of one video data (first video data) is completed, then it is checked whether the transmission of control / state data is completed in the mixed data that is subsequently transmitted continuously in frame units (S230). To this end, the transmitting unit (200) can confirm the start of transmission of control / state data through the SOF_d field included in the frame of the control / state data, and confirm that the transmission of control / state data is completed through the EOF_d field included in the frame of the control / state data. That is, if both the SOF_d field and the EOF_d field are confirmed in the transmitted control / state data, it is confirmed that the transmission of control / state data is completed.

[0070] Thus, the transmitting unit (200) transmits control / status data (50) to the receiving side after transmitting the last frame (EOF) of the first video data (20), and then transmits the first frame (SOF) of the second video data (30) to the receiving side. Meanwhile, between the first and second video data (20)(30) and the control / status data (50), several IDLE data (IDLEs) (40a) are further configured for data decoding by the receiving side.

[0071] Through this process, the transmitting unit (200) transmits all mixed data to the receiving side (S240).

[0072] Next, the receiver (300) receives mixed data received from the optical channel in frame units (S300). At this time, since the mixed data received from the optical channel is received as serial data, the receiver (300) converts it into parallel data capable of parallel communication.

[0073] Then, in the separation unit (400), the received mixed data is restored to extract video data and control / status data, respectively (S400). That is, the separation unit (400) de-frams the data stream of the mixed data into frames according to the optical communication protocol frame structure to extract video data and control / status data, respectively.

[0074] When mixed data is received in frames having multiple fields, the separation unit (400) confirms the start of transmission of video data through the SOF field included in the frame of video data among the received mixed data, and confirms that the transmission of one video data is completed through the EOF field included in the frame of video data, thereby extracting one video data.

[0075] Afterwards, the separation unit (400) confirms the start of transmission of the control / state data through the SOF_d field included in the control / state data among the continuously received mixed data, and confirms that the transmission of the control / state data is completed through the EOF_d field included in the control / state data, and extracts the control / state data.

[0076] Through this method, control and status data, including aircraft control and status information, can be transmitted along with video data using mixed data transmitted during a single refresh rate, thereby enabling efficient use of the channel. In particular, since control and status data can be combined with video data to create mixed data for joint transmission, it is possible to deliver control and status data without the need for a separate interface.

[0078] In the foregoing, preferred embodiments of the present invention have been described and illustrated using specific terms, but such terms are intended solely to clarify the present invention, and it is obvious that various modifications and changes may be made to the embodiments and described terms of the present invention without departing from the technical spirit and scope of the following claims. Such modified embodiments should not be understood separately from the spirit and scope of the present invention, but should be considered to fall within the scope of the claims of the present invention. Explanation of the symbols

[0080] 10: Vertical sync signal (V-sync) 20, 30: 1st and 2nd video data 40: IDLE field 50: Control / status data 100: Mixing section 200: Transmitter section 300: Receiver 400: Separator

Claims

Claim 1 A multiple data transmission system in an avionics system comprising: a mixing unit that generates mixed data by combining video data including image information and control / state data (control and state data) including control and state information into frame formats and combining them frame by frame; a transmitting unit that transmits the mixed data generated by the mixing unit in frame format; a receiving unit that receives the mixed data in frame format from the transmitting unit; and a separating unit that de-frams the mixed data received by the receiving unit in frame units to extract the video data and control / state data, respectively, wherein the mixed data comprises: video data composed of multiple frames; and control / state data located between the video data and other adjacent video data, and wherein the control / state data comprises: an SOF_d field indicating the start of the control / state data frame; a Size_infor field providing information on the size of the data interval of the control / state data frame; a Data field providing the actual transmitted control / state data; a CRC-32 field that detects errors and guarantees data integrity; and an EOF_d field indicating the end of the control / state data frame. Claim 2 A multiple data transmission system in an avionics system, characterized in that, in claim 1, the mixing unit is composed of an optical framer and the separating unit is composed of an optical deframer. Claim 3 In claim 1, the mixed data is a multiple data transmission system in an avionics system configured in a frame format. Claim 4 delete Claim 5 A multiple data transmission system in an avionics system according to claim 1, wherein each frame of the video data is composed of a plurality of fields, and the fields include: an SOF field indicating the start of the video data frame; an FC Header field providing control / identification information of the field; a Payload_last field providing the actual video data to be transmitted; a CRC field that detects errors and ensures data integrity; an EOF field indicating the end of the video data frame; and an IDLEs field for maintaining a stable communication connection. Claim 6 delete Claim 7 In claim 1, the receiver is a multiple data transmission system in an avionics system that converts the mixed data received from an optical channel into parallel data for parallel communication. Claim 8 In claim 1, the transmitter is a multiple data transmission system in an avionics system that converts the mixed data into serial data for serial communication and transmits it over an optical channel. Claim 9 A method for multiple data transmission in an avionics system, comprising: a process of generating mixed data by combining video data including image information and control / state data (control and state data) including control and state information in a frame format in a mixing unit; a process of transmitting the mixed data in a frame format in a transmitting unit; a process of receiving the mixed data transmitted from the transmitting unit in a frame format in a receiving unit; and a process of extracting video data and control / state data from the mixed data received from the receiving unit in a separating unit, wherein the mixed data comprises: video data composed of multiple frames; and control / state data located between the video data and other adjacent video data, and wherein the control / state data comprises: an SOF_d field indicating the start of the control / state data frame; a Size_infor field providing information on the size of the data interval of the control / state data frame; a Data field providing the actual transmitted control / state data; a CRC-32 field that detects errors and guarantees data integrity; and an EOF_d field indicating the end of the control / state data frame. Claim 10 In claim 9, the process of generating the mixed data comprises: a process of formatting the data streams of the video data and control / status data to fit an optical communication protocol frame structure; and a process of grouping the formatted video data and control / status data into frames to generate the mixed data in a frame format, thereby forming a multiple data transmission method in an avionics system. Claim 11 A method for multiple data transmission in an avionics system according to claim 9, wherein the transmitting process comprises: a process of transmitting the control / status data sequentially after transmitting the last frame of any video data; and a process of transmitting the first frame of the next any video data after the transmission of the control / status data is completed. Claim 12 A multiple data transmission method in an avionics system according to claim 11, comprising at least five IDLE data for data decoding by the receiving side between the video data and the control / status data. Claim 13 A method for transmitting multiple data in an avionics system according to claim 9, wherein the transmitting process comprises: a process of transmitting the mixed data in frames in accordance with a vertical synchronization signal (V-sync); a process of checking whether the transmission of one video data in the transmitted mixed data is completed; and, if the result of the check confirms that the transmission of one video data is completed, a process of checking whether the transmission of control / status data in the transmitted mixed data is completed. Claim 14 A method for multiple data transmission in an avionics system according to claim 13, wherein each frame of the video data comprises a plurality of fields, and the fields include: an SOF field indicating the start of the video data frame; an FC Header field providing control / identification information of the field; a Payload_last field providing the actual video data to be transmitted; a CRC field that detects errors and ensures data integrity; an EOF field indicating the end of the video data frame; and an IDLEs field for maintaining a stable communication connection. Claim 15 A method for multiple data transmission in an avionics system according to claim 14, wherein the process of confirming whether the transmission of one video data is completed comprises: confirming the start of the transmission of the video data through an SOF field included in a frame of the video data; confirming that the transmission of one video data is completed through an EOF field included in a frame of the video data; and confirming that the transmission of one video data is completed when both the SOF field and the EOF field are confirmed. Claim 16 In claim 14, the process of extracting the video data and control / status data, respectively, comprises: a process of confirming the start of transmission of video data through an SOF field included in a frame of video data in the received mixed data; a process of confirming that the transmission of one video data has ended through an EOF field included in a frame of video data in the received mixed data; and a process of extracting into one video data when both the SOF field and the EOF field are confirmed. Claim 17 delete Claim 18 A method for multiple data transmission in an avionics system according to claim 13, wherein the process of confirming whether the transmission of the control / status data is completed comprises: confirming the start of the transmission of the control / status data through an SOF_d field included in the frame of the control / status data; confirming that the transmission of the control / status data has ended through an EOF_d field included in the frame of the control / status data; and confirming that the transmission of the control / status data is completed when both the SOF_d field and the EOF_d field are confirmed. Claim 19 In claim 13, the process of extracting the video data and control / status data, respectively, comprises: a process of confirming the start of transmission of the control / status data through the SOF_d field included in the control / status data in the received mixed data; a process of confirming that the transmission of the control / status data has ended through the EOF_d field included in the control / status data in the received mixed data; and a process of extracting the control / status data when both the SOF_d field and the EOF_d field are confirmed. Claim 20 In claim 9, the process of extracting the video data and control / status data, respectively, comprises: a process of de-framing the data stream of the mixed data into frame units to fit the optical communication protocol frame structure; and a process of extracting the video data and control / status data, respectively, in a multiple data transmission method in an avionics system. Claim 21 delete

Images