TWI763326B - Video transmission system - Google Patents

Abstract

A video transmission system includes a first processing circuit and a second processing circuit. The first processing circuit is used for outputting a composite image signal. The composite image signal includes a video area, an extension area and an edge area, and the extension area stores non-video signals. The second processing circuit is used for receiving the composite image signal, and extracting the non-video signals from the composite image signal.

Description

video transmission system

This case is about the field of image transmission, especially an image transmission system.

With the rapid development of today's technology, the demand for image transmission is also increasing day by day. At present, image transmission relies on multiple transmission channels to transmit image signals and many signals that match the image signals. For example, when a TV SoC (TV SoC) transmits signals to a panel, in addition to the transmission channels that need to transmit image signals, image transmission requires Usually, other transmission channels are required to transmit non-image signals, so that the information to be outputted by the TV single chip can be completely transmitted to the panel, so that the panel can operate normally.

However, the image transmission method in which each signal relies on its own transmission channel has some problems. For example, the transmission distance of the image cannot be too long, and the diameter of the wire material of the transmission line cannot be reduced. Therefore, there are many restrictions on the use of image transmission.

In view of the above, this case proposes an image transmission system.

According to some embodiments, the image transmission system includes a first processing circuit and a second processing circuit. The first processing circuit is used for outputting the composite image signal. The composite image signal includes an image area, an extension area and an edge area, and the extension area stores non-image signals. The second processing circuit is used for receiving the composite image signal and extracting the non-image signal from the composite image signal.

According to some embodiments, the first processing circuit is used for receiving the non-video signal and the basic video signal, and inserting the non-video signal into the basic video signal, so that the basic video signal in the first video format is converted into the basic video signal in the second video format. composite video signal.

According to some embodiments, there is an image horizontal difference and an image vertical difference between the first image format and the second image format. The basic image signal includes a basic image area and a basic edge area. The first processing circuit divides the basic edge area into an extension area and an edge area according to the image horizontal difference value and the image vertical difference value, stores non-image signals in the extension area, uses the basic image area as the image area, and combines the image area and the extension area. area and edge area to obtain composite image signal.

According to some embodiments, a portion of the extension area that does not store non-image signals is used as a redundant area. The first processing circuit stores the redundant signal in the redundant area.

According to some embodiments, the first processing circuit stores image format information, and the image format information includes a first image format and a second image format. When the first processing circuit inserts the non-video signal into the basic video signal, the first processing circuit converts the basic video signal in the first video format into the composite video signal in the second video format according to the video format information.

According to some embodiments, the second processing circuit stores image format information, and the image format information includes a first image format and a second image format. The second processing circuit extracts the extended area from the composite image signal according to the first image format and the second image format, and extracts the non-image signal from the extended area. The second processing circuit extracts the image area from the composite image signal according to the first image format, uses the image area as the basic image area, and obtains the basic image signal in the first image format according to the basic image area.

According to some embodiments, the image transmission system further includes an encoding circuit and a decoding circuit. The encoding circuit is used for receiving the composite image signal from the first processing circuit, and encoding the composite image signal into an encoded composite image signal. The decoding circuit is used for receiving the coded composite video signal output from the coding circuit, decoding the coded composite video signal into a composite video signal, and outputting the composite video signal to the second processing circuit.

According to some embodiments, the image transmission system further includes a first chip and a second chip. The first chip is used for outputting basic image signals and non-image signals to the first processing circuit. The second chip is used for receiving the basic image signal and the non-image signal output by the second processing circuit.

To sum up, according to the image transmission system in some embodiments of the present application, the composite image signal can be used for signal transmission between the first processing circuit and the second processing circuit. Since the composite video signal is a kind of video signal, and the composite video signal includes video signal and non-video signal, the second processing circuit can extract the non-video signal from the composite video signal. Therefore, after the second processing circuit receives the composite image signal, the second processing circuit can obtain the image signal and the non-image signal. Therefore, the composite image signal can be used between the first processing circuit and the second processing circuit to achieve the function of simultaneously transmitting the image signal and the non-image signal, that is, only the composite image signal needs to be transmitted between the first processing circuit and the second processing circuit. The channel can achieve the function of transmitting video signal and non-video signal at the same time.

This case is about a video transmission system. While the specification describes what are considered to be the best modes for carrying out the invention, it should be understood that the invention can be implemented in many ways and should not be limited to the specific embodiments described below or the specific ways in which the features described below are implemented. In other cases, well-known details will not be repeated or discussed in order to avoid obscuring the key points of the present case.

FIG. 1 is a schematic diagram of an image transmission system 10 according to some embodiments of the present application. FIG. 2 is a schematic diagram of a composite image signal S1 according to some embodiments of the present application. Referring to FIG. 1 and FIG. 2 , in some embodiments, the image transmission system 10 includes a first processing circuit 100 and a second processing circuit 200 . The first processing circuit 100 is used for outputting the composite image signal S1. The composite image signal S1 includes an image area A1, an extension area A2 and an edge area A3, and the extension area A2 stores the non-image signal S2. The second processing circuit 200 is used for receiving the composite video signal S1 and extracting the non-video signal S2 from the composite video signal S1.

Specifically, in some embodiments, the composite image signal S1 is a frame image, and the frame image includes an active video area and a porch area. In other words, the composite image signal S1 is an image signal, wherein the image area A1 in the composite image signal S1 can store the signal data of the real image, and the extended area A2 in the composite image signal S1 can store the signal data of the non-image signal S2 . When the first processing circuit 100 transmits the composite video signal S1 to the second processing circuit 200, the video format of the composite video signal S1 (eg, the second video format disclosed in the following paragraphs) is based on the video area A1 and the extension area A2. It is the effective image area, and the edge area A3 is used as the blocking area. After the second processing circuit 200 receives the composite image signal S1, the second processing circuit 200 can process the composite image signal S1 using two different image formats, one of which (eg, the first image format disclosed in the following paragraphs) is represented by The image area A1 is used as the effective image area, and the extension area A2 and the edge area A3 are used as the blocking area, and another image format (for example, the second image format disclosed in the following paragraphs) is the image area A1 and the extension area. A2 is used as the effective image area, and the edge area A3 is used as the blocking area. Therefore, when the second processing circuit 200 processes the composite image signal S1 in the first image format, it will not be affected by the storage of the non-image signal S2 in the extension area A2. In contrast, the second processing circuit 200 can process the extension area A2 according to whether the extension area A2 belongs to different regions for different image formats, and extract the non-image signal S2 stored in the extension area A2 from the extension area A2.

In some embodiments, the first processing circuit 100 is used for receiving the non-video signal S2 and the basic video signal S0, and inserting the non-video signal S2 into the basic video signal S0, so that the basic video signal S0 in the first video format is converted into The composite image signal S1 in the second image format.

Specifically, in some embodiments, the basic image signal S0 is a frame image, that is, the basic image signal S0 also includes an effective image area (for example, the basic image area B1 in FIG. 3 ) and a blocking area (for example, in FIG. 3 ) Basic edge zone B3). It should be noted that the difference between the basic video signal S0 and the composite video signal S1 includes that the basic video signal S0 is an video signal in a first video format, and the composite video signal S1 is an video signal in a second video format. That is, when the basic image signal S0 and the composite video signal S1 are video signals of the same size, the sizes of the effective image areas of the basic video signal S0 and the composite video signal S1 are different. Similarly, the basic video signal S0 and the composite video signal S1 have different sizes. The size of the occlusion area will also vary. When the first processing circuit 100 places the non-image signal S2 in the basic video signal S0, the first processing circuit 100 places the non-video signal S2 in the blocking area of the basic video signal S0 (for example, the basic edge area B3 in FIG. 3 ) ), and converts the basic video signal S0 into the non-video signal S2 into the second video format, that is, the composite video signal S1 in the second video format.

FIG. 3 is a schematic diagram of a basic image signal according to some embodiments of the present application. Referring to FIG. 2 and FIG. 3 , in some embodiments, the first image format and the second image format have an image horizontal difference and an image vertical difference. The basic image signal S0 includes a basic image area B1 and a basic edge area B3. The first processing circuit 100 divides the basic edge area B3 into an extension area A2 and an edge area A3 according to the image horizontal difference value and the image vertical difference value, and stores the non-image signal S2 in the extension area A2. The first processing circuit 100 uses the basic image area B1 as the image area A1, and combines the image area A1, the extension area A2 and the edge area A3 to obtain the composite image signal S1.

Specifically, in some embodiments, the image horizontal difference is the difference between the horizontal size of the active image area of the first image format and the horizontal size of the active image area of the second image format. The image vertical difference is the difference between the vertical size of the active image area of the first image format and the vertical size of the active image area of the second image format. The basic image signal S0 uses the basic image area B1 as the effective image area and the basic edge area B3 as the blocking area. The first processing circuit 100 divides the basic edge area B3 into the extension area A2 and the edge area A3 according to the image horizontal difference value and the image vertical difference value, that is, the first processing circuit 100 determines the extension area according to the image horizontal difference value and the image vertical difference value. Size of area A2. For example, when the effective image area of the first image format is "1920x1080" and the effective image area of the second image format is "2020x1080", the size of the extension area A2 is "100x1080". Or, when the effective image area of the first image format is "1920x1080" and the effective image area of the second image format is "1920x1180", the size of the extension area A2 is "1920x100", but not limited to these two examples . After the first processing circuit 100 determines the portion of the basic edge area B3 as the extension area A2, the first processing circuit 100 stores the non-image signal S2 in the extension area A2. Since the first processing circuit 100 uses the basic image area B1 as the image area A1, the image area A1 as the effective image area, and the extension area A2 and the edge area A3 as the blocking area, the combination of the image area A1 and the extension area A2 and the edge area A3 can obtain the composite image signal S1.

It should be noted that the present application is not limited to the composite image signal S1 shown in FIG. 2 and the basic image signal S0 shown in FIG. 3. In some embodiments, the extension area A2 can completely surround the surrounding image area A1, or the extension area A2 can partially surround the surrounding image area A1. In some embodiments, the extension area A2 may not be set in a connected area, or may be two unconnected areas (the embodiment shown in FIG. 5 ) or two or more unconnected areas. In some embodiments, the extension area A2 may not be connected to the image area A1.

In some embodiments, the portion of the extension area A2 that does not store the non-image signal S2 is a redundant area (not shown), and the first processing circuit 100 stores the redundant signal (not shown) in the redundant area.

Specifically, in some embodiments, when the first processing circuit 100 fails to completely store the non-image signal S2 in the extended area A2, the redundant signal can be stored in these areas where the non-image signal S2 is not stored. That is, the first processing circuit 100 can use the redundant signal different from the non-image signal S2 to divide the extended area A2 into redundant areas, so that the extended area A2 can distinguish the valid non-image signal S2 from the invalid redundant signal. signal. It should be noted that, for example, when the data volume of the non-image signal S2 is smaller than the data storage capacity of the extension area A2, or the extension area A2 has a fixed size, but the non-image signal S2 cannot be split into the same size as the extension area A2, The extended area A2 may not be fully stored by the non-video signal S2.

In some embodiments, the first processing circuit 100 stores image format information, and the image format information includes a first image format and a second image format. When the first processing circuit 100 puts the non-video signal S2 into the basic video signal S0, the first processing circuit 100 converts the basic video signal S0 in the first video format into a composite video signal in the second video format according to the video format information S1.

Specifically, in some embodiments, since the first processing circuit 100 stores the image format information including the first image format and the second image format, the first processing circuit 100 can determine according to the first image format and the second image format The basic edge area B3 of the basic video signal S0 can be used as the position of the extension area A2, and after placing the non-video signal S2 in the position of the extension area A2, the basic video signal S0 in the first video format is converted into the second video signal S0. The composite video signal S1 of the video format.

In some embodiments, the second processing circuit 200 stores image format information, and the image format information includes a first image format and a second image format. The second processing circuit 200 extracts the extended area A2 from the composite image signal S1 in the second image format according to the first image format and the second image format, and extracts the non-image signal S2 from the extended area A2. The second processing circuit 200 extracts the image area A1 from the composite image signal S1 in the second image format according to the first image format, uses the image area A1 as the basic image area B1, and obtains the first image according to the basic image area B1 Format of the basic video signal S0.

Specifically, in some embodiments, the second processing circuit 200 stores image format information including the first image format and the second image format. The second processing circuit 200 can use the first image format to determine that the image area A1 belongs to the effective image area of the first image format, and use the second image format to determine that the image area A1 and the extension area A2 belong to the effective image area of the second image format. Since the extension area A2 belongs to the blocking area for the first image format, but belongs to the effective image area for the second image format, the second processing circuit 200 can extract the extension area A2 from the composite image signal S1 in the second image format. Then, the second processing circuit 200 extracts the non-image signal S2 from the extension area A2. Furthermore, since the second processing circuit 200 can use the first image format to determine that the image area A1 belongs to the effective image area of the first image format, the second processing circuit 200 can extract the image from the composite image signal S1 in the second image format. Area A1. Since the second processing circuit 200 uses the image area A1 as the basic image area B1 of the first image format, the basic edge area B3 corresponding to the first image format can be obtained according to the basic image area B1, so the basic image area B1 and the basic image area can be combined The edge area B3 obtains the basic image signal S0. It should be noted that, in some embodiments, since the basic edge area B3 does not need to put data in a specific format, the basic image signal S0 can be obtained by obtaining the basic image area B1 of the first image format.

FIG. 4 is a partial schematic diagram of the composite image signal S1 according to some embodiments of the present application. Referring to FIG. 2 and FIG. 4 , in some embodiments, FIG. 4 is only a part of the composite image signal S1 of FIG. 2 , for example, a line encoding of the composite image signal S1 in the horizontal direction. The edge area A3 includes a front edge area A31 and a rear edge area A33. The front edge area A31 is connected to the image area A1, the image area A1 is connected to the extension area A2, and the extension area A2 is connected to the rear edge area A33. The composite image signal S1 has an image start indicator P1, an image end indicator P2, an extension start indicator P3, and an extension end indicator P4. The image start index P1 is set at the position of the front edge area A31 adjacent to the image area A1, the expansion start index P3 is set at the position of the expansion area A2 adjacent to the image area A1, and the expansion end index P4 is set at the expansion area A2 adjacent to the rear At the position of the edge area A33, the image termination indicator P2 is set at the position of the rear edge area A33 adjacent to the extension area A2. The second processing circuit 200 judges the boundary between the front edge area A31 and the image area A1 according to the image start index P1, judges the boundary between the image area A1 and the expansion area A2 according to the expansion start index P3, and judges the boundary between the image area A1 and the expansion area A2 according to the expansion start index P3, and according to the expansion end index P4 and the image end index P2 The boundary between the extension area A2 and the rear edge area A33 is determined.

Specifically, in some embodiments, the image end indicator P2 of the basic video signal S0 is set at the position of the extension start indicator P3 of the corresponding composite video signal S1, that is, the first processing circuit 100 will be in the first video format. When the basic video signal S0 is converted into the composite video signal S1 in the second video format, the position of the video end indicator P2 is reset, and the extension start indicator P3 and the extension end indicator P4 are added. On the contrary, when the second processing circuit 200 obtains the basic video signal S0 in the first video format according to the composite video signal S1 in the second video format, it resets the position of the video end indicator P2, and deletes the extension start indicator P3 and extension. Terminate indicator P4.

FIG. 5 is a partial schematic diagram of the composite image signal S1 according to some embodiments of the present application. Referring to FIG. 2 and FIG. 5 , in some embodiments, FIG. 5 is only a part of the composite image signal S1 of FIG. 2 , for example, a line encoding in the horizontal direction of the composite image signal S1 . In some embodiments, the edge region A3 includes a front edge region A31 and a rear edge region A33, the extension region A2 includes a front extension region A21 and a rear extension region A23, the front edge region A31 is connected to the front extension region A21, and the front extension region A21 is connected to the image region A1, the image area A1 is connected to the rear extension area A23, and the rear extension area A23 is connected to the rear edge area A33. The composite image signal S1 has an image start index P1, an image end index P2, a pre-extension start index P31, a pre-extension end index P41, a post-expansion start index P33, and a post-extension end index P43. The image start index P1 is set at the position of the front edge area A31 adjacent to the front expansion area A21, the front expansion start index P31 is set at the position of the front expansion area A21 adjacent to the front edge area A31, and the front expansion end index P41 is set at the front expansion area. The area A21 is adjacent to the image area A1, the post-expansion start index P33 is set at the position of the post-expansion area A23 adjacent to the image area A1, and the post-expansion termination index P43 is set at the position of the post-expansion area A23 adjacent to the back edge area A33. position, the image termination indicator P2 is set at the position where the rear edge area A33 is adjacent to the rear expansion area A23. The second processing circuit determines the boundary between the front edge area A31 and the front expansion area A21 according to the image start index P1 and the front expansion start index P31, and determines the boundary between the front expansion area A21 and the image area A1 according to the front expansion end index P41. The extension start indicator P33 determines the boundary between the image area A1 and the rear extension area A23, and determines the boundary between the rear extension area A23 and the rear edge area A33 according to the post extension termination indicator P43 and the image termination indicator P2.

Specifically, in some embodiments, the image start indicator P1 of the basic video signal S0 is set at the position of the front extension end indicator P41 of the corresponding composite video signal S1, and the video end indicator P2 of the basic video signal S0 is set at the corresponding position The position of the post-expansion start indicator P33 of the composite video signal S1, that is, when the first processing circuit 100 converts the basic video signal S0 in the first video format to the composite video signal S1 in the second video format, the image is reset. The positions of the start index P1 and the image end index P2 are added, and a pre-extension start index P31, a pre-extension end index P41, a post-extension start index P33, and a post-extension end index P43 are added. On the contrary, when the second processing circuit 200 obtains the basic video signal S0 in the first video format according to the composite video signal S1 in the second video format, it resets the positions of the video start indicator P1 and the video end indicator P2, and deletes the position of the video start indicator P1 and the video end indicator P2. The expansion start index P31, the former expansion end index P41, the latter expansion start index P33, and the latter expansion end index P43.

FIG. 6 is a schematic diagram of an image transmission system 10 according to other embodiments of the present application. 6 , in some embodiments, the image transmission system 10 includes a first processing circuit 100 , a second processing circuit 200 , an encoding circuit 120 and a decoding circuit 220 . The encoding circuit 120 is used for receiving the composite video signal S1 from the first processing circuit 100, and encoding the composite video signal S1 into an encoded composite video signal S1'. The decoding circuit 220 is used for receiving the coded composite video signal S1' output from the coding circuit 120, decoding the coded composite video signal S1' into a composite video signal S1, and outputting the composite video signal S1 to the second processing circuit 200. In other words, the first processing circuit 100 transmits the composite image signal S1 to the second processing circuit 200 through the encoding circuit 120 and the decoding circuit 220 .

FIG. 7 is a schematic diagram of an encoded composite image signal S1' according to some embodiments of the present application. 6 and 7, specifically, in some embodiments, the difference between the coded composite image signal S1' and the composite image signal S1 is that the coded composite image signal S1' is the coded composite image signal S1, so the composite image is coded The signal S1' includes an encoded image area A1', an encoded extension area A2' and an encoded edge area A3'. For the encoding circuit 120, the composite image signal S1 is in the second image format, that is, the image area A1 and the extension area A2 are used as the effective image area, and the edge area A3 is used as the blocking area. In other words, the encoding circuit 120 encodes the data stored in the image area A1 and the extension area A2 in the effective image area, the non-image signal S2 stored in the extension area A2 is also encoded in the effective image area, and the edge area A3 is used in the edge area. Therefore, the encoding circuit 120 can obtain the encoded composite image signal S1'. In contrast, for the encoding circuit 120, the encoded composite image signal S1' is in the second image format, that is, the encoded image area A1' and the encoded extended area A2' are used as the effective image area, and the encoded image area A1' and the encoded extended area A2' are The edge area A3' is used as a blocking area. The decoding circuit 220 uses the encoded image area A1' and the encoded extension area A2' as the effective image area for decoding, and the encoded edge area A3' as the edge area for decoding, so the decoding circuit 220 can obtain the composite image signal S1.

FIG. 8 is a schematic diagram of an image transmission system 10 according to other embodiments of the present application. 8 , in some embodiments, the image transmission system 10 includes a first processing circuit 100 , a second processing circuit 200 , a first wafer 140 and a second wafer 240 . The first chip 140 is used for outputting the basic image signal S0 and the non-image signal S2 to the first processing circuit 100 . The second chip 240 is used for receiving the basic image signal S0 and the non-image signal S2 output by the second processing circuit 200 .

Specifically, in some embodiments, the first chip 140 of the image transmission system 10 is used to generate the basic image signal S0 and the non-image signal S2 , and transmit the basic image signal S0 and the non-image signal S2 to the first processing circuit 100 . The image transmission system 10 utilizes the first processing circuit 100 to combine the basic image signal S0 and the non-image signal S2 into a composite image signal S1, and then the first processing circuit 100 transmits the composite image signal S1 to the second processing circuit 200 (wherein In some embodiments, in the process of transmitting the composite image signal S1 from the first processing circuit 100 to the second processing circuit 200 , the image transmission system 10 uses the encoding circuit 120 and the decoding circuit 220 to encode and decode the composite image signal S1 . repeat). The image transmission system 10 then uses the second processing circuit 200 to extract the basic image signal S0 and the non-image signal S2 from the composite image signal S1. The second chip 240 of the image transmission system 10 receives the basic image signal S0 and the non-image signal S2 output by the second processing circuit 200, and generates corresponding corresponding signals on the display device (not shown) according to the basic image signal S0 and the non-image signal S2. Display screen and settings.

In some embodiments, the first processing circuit 100 , the second processing circuit 200 , the encoding circuit 120 , the decoding circuit 220 , the first chip 140 and the second chip 240 can be designed on different chips or on the same chip, or The first chip 140, the first processing circuit 100 and the encoding circuit 120 may be designed in one chip, and the second processing circuit 200, the second chip 240 and the decoding circuit 220 may be designed in another chip, but not limited to this .

In some embodiments, the first die 140 is a TV SoC, and the second die 240 is a panel die. The basic video signal S0 includes video (Video) and sound (Audio). The non-video signal S2 includes dimming, serial peripheral interface (SPI) setting, pulse width modulation (PWM) setting, integrated bus circuit (I2C) setting, and firmware (FW) setting. The composite video signal S1 includes video, sound, dimming, serial peripheral interface setting, pulse width modulation setting, integrated bus circuit setting, and firmware setting.

To sum up, according to the image transmission system in some embodiments of the present application, the composite image signal can be used for signal transmission between the first processing circuit and the second processing circuit. Since the composite video signal is a kind of video signal, and the composite video signal includes video signal and non-video signal, the second processing circuit can extract the non-video signal from the composite video signal. Therefore, after the second processing circuit receives the composite image signal, the second processing circuit can obtain the image signal and the non-image signal. Therefore, the composite image signal can be used between the first processing circuit and the second processing circuit to achieve the function of simultaneously transmitting the image signal and the non-image signal, that is, only the composite image signal needs to be transmitted between the first processing circuit and the second processing circuit. The channel can achieve the function of transmitting video signal and non-video signal at the same time.

Although the technical content of this case has been disclosed above with preferred embodiments, it is not intended to limit this case. Anyone who is familiar with this technique, any changes and modifications made without departing from the spirit of this case should be covered within the scope of this case. Therefore, the scope of patent protection in this case should be determined by the scope of the appended patent application.

10: Video transmission system 100: The first processing circuit 200: Second processing circuit 120: Encoding circuit 220: decoding circuit 140: first wafer 240: Second wafer S0: Basic video signal S1: Composite image signal S1': Coded composite video signal S2: non-video signal A1: Image area A1': encoded image area A2: Expansion area A2': Encoded extension area A21: Front Expansion Area A23: Rear Expansion Area A3: Marginal area A3': The coded edge area A31: Front Marginal Area A33: Rear edge area B1: Basic image area B3: Basic Marginal Area P1: Image starting index P2: Image termination indicator P3: Extended start indicator P31: Pre-Extended Start Indicator P33: Post-expansion start indicator P4: Expansion Termination Indicator P41: Pre-expansion termination indicator P43: Post-expansion termination indicator

FIG. 1 is a schematic diagram of an image transmission system according to some embodiments of the present application. FIG. 2 is a schematic diagram of a composite image signal according to some embodiments of the present application. FIG. 3 is a schematic diagram of a basic image signal according to some embodiments of the present application. FIG. 4 is a partial schematic diagram of a composite image signal according to some embodiments of the present application. FIG. 5 is a partial schematic diagram of a composite image signal according to some embodiments of the present application. FIG. 6 is a schematic diagram of an image transmission system according to other embodiments of the present application. FIG. 7 is a schematic diagram of an encoded composite image signal according to some embodiments of the present application. FIG. 8 is a schematic diagram of an image transmission system according to other embodiments of the present application.

10: Video transmission system 100: The first processing circuit 200: Second processing circuit S0: Basic video signal S1: Composite image signal S2: non-video signal

Claims (8)

An image transmission system, comprising: a first processing circuit for outputting a composite image signal, the composite image signal includes an image area, an extension area and an edge area, the extension area stores a non-image signal; and a first Two processing circuits are used for receiving the composite image signal and extracting the non-image signal from the composite image signal; wherein, the first processing circuit is used for receiving the non-image signal and a basic image signal, and inserting the non-image signal In the basic video signal, the basic video signal in a first video format is converted into the composite video signal in a second video format; wherein, the first processing circuit stores a video format information, the video format information including the first image format and the second image format; wherein, when the first processing circuit puts the non-image signal into the basic image signal, the first processing circuit will be in the first image format according to the image format information The basic video signal is converted into the composite video signal in the second video format. The image transmission system of claim 1, wherein there is an image horizontal difference and an image vertical difference between the first image format and the second image format, and the basic image signal includes a basic image area and a basic image an edge region; and wherein, the first processing circuit divides the basic edge region into the extension region and the edge region according to the image horizontal difference value and the image vertical difference value, stores the non-image signal in the extension region, and uses the The basic image area is used as the image area, and the image area, the extension area and the edge area are combined to obtain the composite image signal. The image transmission system according to claim 2, wherein a portion of the extended area that does not store the non-image signal is a redundant area, and the first processing circuit stores a redundant signal in the redundant area. The image transmission system of claim 1, wherein the second processing circuit stores an image format information, and the image format information includes a first image format and a second image format; wherein the second processing circuit is based on the first image format. An image format and the second image format extract the extended area from the composite image signal in the second image format, and extract the non-image signal from the extended area; and wherein the second processing circuit is based on the first The image format extracts the image area from the composite image signal in the second image format, uses the image area as a base image area, and obtains a base image signal in the first image format according to the base image area . The image transmission system of claim 1, wherein the edge area includes a front edge area and a rear edge area, the front edge area is connected to the image area, the image area is connected to the extension area, and the extension area is connected to the rear edge area; wherein, the composite image signal has an image start indicator, an image end indicator, an extension start indicator and an extension end indicator, and the image start indicator is set at a position adjacent to the image area in the front edge area, The extension start indicator is set at the position of the extension area adjacent to the image area, the extension end indicator is set at the position of the extension area adjacent to the rear edge area, and the image end indicator is set at the rear edge area adjacent to the the location of the extension area; and The second processing circuit judges the boundary between the front edge area and the image area according to the image start index, judges the boundary between the image area and the expansion area according to the extension start index, and judges the boundary between the image area and the expansion area according to the expansion end index and the image The termination indicator determines the boundary between the extension area and the rear edge area. The image transmission system as claimed in claim 1, wherein the edge region includes a front edge region and a rear edge region, the extension region includes a front extension region and a rear extension region, and the front edge region is connected to the front extension region, The front extension area is connected to the image area, the image area is connected to the rear extension area, and the rear extension area is connected to the rear edge area; wherein, the composite image signal has an image start indicator, an image end indicator, and a front extension start indicator. start index, a pre-expansion termination index, a post-expansion start index, and a post-expansion end index, the image start index is set at the position adjacent to the pre-expansion area of the front edge area, and the pre-expansion start index is set at The front extension area is adjacent to the front edge area, the front extension end indicator is set at the position of the front extension area adjacent to the image area, and the back extension start indicator is set at the back extension area adjacent to the image area , the post-expansion termination indicator is set at a position where the post-expansion area is adjacent to the back edge area, and the image termination indicator is set at a position where the post-edge area is adjacent to the post-expansion area; and wherein the second processing The circuit determines the boundary between the front edge region and the front extension region according to the image start index and the front extension start indicator, determines the boundary between the front extension region and the image region according to the front extension end indicator, and determines the boundary between the front extension region and the image region according to the back extension The start index determines the boundary between the image area and the post-expansion area, and determines the boundary between the post-expansion area and the back edge area according to the post-expansion end index and the image end index. The image transmission system according to claim 1, further comprising: an encoding circuit for receiving the composite video signal from the first processing circuit and encoding the composite video signal into an encoded composite video signal; and a decoding circuit for receiving the encoded composite video signal output from the encoding circuit , decoding the coded composite video signal into the composite video signal, and outputting the composite video signal to the second processing circuit. The image transmission system of claim 1, further comprising: a first chip for outputting a basic image signal and the non-image signal to the first processing circuit; and a second chip for receiving the second processing The basic image signal and the non-image signal output by the circuit.

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