Method of transmitting and receiving image signals and image processing device for implementing the same
Disclosed are a method of transmitting and receiving image signals and an image processing device for implementing the same, by which an error detection code for verification of image related data can be provided in transmitting the image related data to a receiving side from a transmitting side. The disclosure includes generating a control field frame including Average Picture Level (APL) data of image data and an error detection code for the APL data, transmitting the generated control field frame in a vertical blanking period according to a serial interface system, and transmitting pixel data of the image data in a vertical non-blanking period according to the serial interface system.
1 . A method of transmitting image data, the method comprising:
generating a control field frame including Average Picture Level (APL) data of the image data and an error detection code for the APL data;
transmitting the generated control field frame in a vertical blanking period according to a serial interface system; and
transmitting pixel data of the image data in a vertical non-blanking period according to the serial interface system,
wherein the APL data is an average value of image data of all pixels in one frame.
2 . The method of claim 1 , wherein the control field frame is transmitted in a low logic period of a vertical synchronization signal within the vertical blanking period.
3 . The method of claim 2 , wherein the control field frame is transmitted in a low logic period of a horizontal synchronization signal within the low logic period of the vertical synchronization signal.
4 . The method of claim 3 , wherein the control field frame is transmitted within a low logic period of a data enable signal.
5 . The method of claim 1 , wherein the control field frame comprises a preamble field to determine and synchronize a start part of the control field frame, a data field filled with the APL data, a length/type field to determine a length of the control field frame and a type of data in the data field, a padding field which is a dummy byte inputted to facilitate error detection calculation, and an error detection field filled with the error detection code.
6 . The method of claim 5 , wherein the error detection code comprises a Cyclic Redundancy Check (CRC) code.
7 . The method of claim 1 , wherein the serial interface system follows a V-by-One (Vx1) standard.
8 . A method of receiving image data, the method comprising:
receiving a control field frame for the image data and pixel data of the image data according to a serial interface system;
parsing Average Picture Level (APL) data of the image data and an error detection code for the APL data in the control field frame, wherein the APL data is an average value of image data of all pixels in one frame;
determining whether an error occurs in the APL Data using the error detection code;
displaying the pixel data according to the APL data when the error has not occurred in the APL data; and
outputting an alarm notifying the error when the error occurs in the APL data.
9 . The method of claim 8 , further comprising displaying the pixel data according to a preset APL data when the error occurs in the APL data.
10 . The method of claim 8 , wherein the control field frame is transmitted in a low logic period of a vertical synchronization signal within a vertical blanking period.
11 . The method of claim 10 , wherein the control field frame is transmitted in a low logic period of a horizontal synchronization signal within the low logic period of the vertical synchronization signal.
12 . The method of claim 11 , wherein the control field frame is transmitted within a low logic period of a data enable signal.
13 . The method of claim 8 , wherein the control field frame comprises a preamble field to determine and synchronize a start part of the control field frame, a data field filled with the APL data, a length/type field to determine a length of the control field frame and a type of data in the data field, a padding field which is a dummy byte inputted to facilitate error detection calculation, and an error detection field filled with the error detection code.
14 . The method of claim 13 , wherein the error detection code comprises a Cyclic Redundancy Check (CRC) code.
15 . The method of claim 8 , wherein the serial interface system follows a V-by-One (Vx1) standard.
16 . An image processing device, comprising:
a transmitter configured to generate a control field frame including Average Picture Level (APL) data of image data and an error detection code for the APL data, transmit the generated control field frame in a vertical blanking period according to a serial interface system, and transmit pixel data of the image data in a vertical non-blanking period according to the serial interface system; and
a receiver configured to receive the control field frame and the pixel data according to the serial interface system, parse the APL data and the error detection code, determine whether an error occurs in the APL data using the error detection code, display the pixel data according to the APL data based on determining that the error fails to occur, and
output an alarm notifying the error when the error occurs in the APL data,
wherein the APL data is an average value of image data of all pixels in one frame.
17 . The image processing device of claim 16 , wherein the control field frame is transmitted in a low logic period of a vertical synchronization signal within the vertical blanking period.
18 . The image processing device of claim 17 , wherein the control field frame is transmitted in a low logic period of a horizontal synchronization signal within the low logic period of the vertical synchronization signal.
19 . The image processing device of claim 18 , wherein the control field frame is transmitted within a low logic period of a data enable signal.
20 . The image processing device of claim 16 , wherein the control field frame comprises a preamble field to determine and synchronize a start part of the control field frame, a data field filled with the APL data, a length/type field to determine a length of the control field frame and a type of data in the data field, a padding field which is a dummy byte inputted to facilitate error detection calculation, and an error detection field filled with the error detection code.