TWM568008U - Video signal conversion device - Google Patents

Abstract

A video signal conversion device includes a frontend interface, a video processing module and a backend interface. The frontend interface receives a video input signal with a first frame rate from a video device. The video processing module outputs a first video output signal with second frame rate. A video receiving device receives the first video output signal and a second video output signal with the first frame rate from the video processing module through backend interface.

Description

Image signal conversion device

The present invention relates to a conversion device, and more particularly to an image signal conversion device.

At present, a plurality of image function applications for the source side of the image have been popularized by users. For example, when the user is playing the game host, it is desirable to store the game host's screen and simultaneously broadcast it to other viewers. However, due to the limitation of the broadcast bandwidth, if the viewer is to watch smoothly, it is necessary to reduce the quality of the picture, such as reducing the resolution. However, the images stored in this way are relatively poor, causing user confusion.

Therefore, it is obvious that the current imaging equipment still lacks the above problems and needs to be improved.

The present invention discloses an image signal conversion device for use with an image transmitting device and an image receiving device. The image signal conversion device comprises a front end interface, an image processing module and a back end interface. The front end interface is coupled to the image transmitting device to receive an image input signal from the image transmitting device, wherein the image input signal conforms to a first frame rate format. The image processing module is coupled to the front end interface, and the image processing module outputs a first output image output signal according to the image input signal, and the first output image output signal conforms to a second frame rate format. The image receiving device is coupled to the image processing module and the image receiving device, wherein the image receiving device receives the first image output signal and the second image output signal from the image processing module through the back interface, wherein the second image output The signal is in a format that conforms to the first frame rate.

Therefore, according to the technical content of the present invention, an image signal conversion device is provided, so that the problems in application of multiple image functions can be more comprehensively applied.

11, 21, 31, 41, 51‧‧‧ image signal conversion device

111, 211, 511‧‧‧ front-end interface

311, 411‧‧‧ front-end interface circuit

1111‧‧‧HDMI shunt

1112‧‧‧HDMI Receiver

112, 212, 512‧‧‧ image processing module

312‧‧‧Image processor for on-site programmable gate array

412‧‧‧Image Processing Hardware Circuit

113, 213, 513‧‧‧ backend interface

313, 413‧‧‧ back-end interface circuit

5131‧‧•Image Bridge Controller

12, 22, 32, 42, 52‧‧‧ image transmission devices

13, 23, 33, 43, 53‧‧‧ image receiving devices

14‧‧‧Another image transmitting device

V11, V21, V31, V41, V51‧‧‧ first image output signal

V12, V22, V32, V42, V52‧‧‧ second image output signal

M10‧‧‧Image Metadata

1 is a schematic diagram of an image signal conversion apparatus according to a first embodiment of the present invention; FIG. 2 is a schematic diagram of an image signal conversion apparatus exemplified by a front end interface according to the first embodiment of the present invention; 2 is a schematic diagram of an image signal conversion apparatus according to a third embodiment of the present invention; FIG. 5 is a schematic diagram of image signal conversion based on the fourth embodiment of the present invention; FIG. 6 is a schematic diagram of an image signal conversion device according to a fifth embodiment of the present invention.

The spirit of the present invention will be clearly described in the following drawings and detailed descriptions. Anyone having ordinary knowledge in the technical field will be able to change and modify the technology as taught by the present invention after learning the embodiments of the present invention, and does not deviate from the present case. Spirit and scope.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to The singular forms "a", "the", "the", "the" and "the" are also used in the plural.

The "first", "second", ..., etc. used in this article are not specifically The meaning of order or order is not intended to limit the case, it merely serves to distinguish between elements or operations described in the same technical terms.

As used herein, "coupled" or "connected" may mean that two or more elements or devices are in direct physical contact with each other, or indirectly in physical contact with each other, or two or more elements or devices. Operation or action may also refer to a direct or indirect connection between electrical (electrical or electrical signals).

The terms "including", "including", "having", "containing", etc., as used in this document are all open terms, meaning, but not limited to.

With respect to "and/or" as used herein, it is meant to include any or all combinations of the recited.

Regarding the directional terms used in this article, such as: up, down, left, right, front or back, etc., only refer to the direction of the additional schema. Therefore, the directional terminology used is used to illustrate that it is not intended to limit the case.

The terms used in this document, unless otherwise noted, usually have the usual meaning of each term used in this field, in the context of the case, and in particular content. Certain terms used to describe the present invention are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in the description of the present disclosure.

The "image input signal" and "image output signal" mentioned in this document refer to signals containing at least image information. Of course, it can also be video and audio signals. There is no limit here.

The embodiment of the present invention discloses an image signal conversion device that can be used in conjunction with an image transmitting device and an image receiving device. The image signal converting device can include a front end interface, an image processing module, and a back end interface. The front end interface is coupled to the image transmitting device to connect An image input signal received from the image transmitting device, wherein the image input signal conforms to a high dynamic range display format. Hereinafter, the "high dynamic range display" is simply referred to as "HDR". The image processing module is coupled to the front end interface, and the image processing module outputs a first image output signal according to the image input signal, wherein the first image output signal conforms to the format displayed by the standard range. Hereinafter, the "standard range display" is simply referred to as "SDR". The back-end interface is coupled to the image processing module and the image receiving device, wherein the image receiving device receives the first image output signal outputted by the image processing module through the back-end interface.

The image transmitting device may at least transmit the image input signal in the HDR format, for example, may only send the image input signal in the HDR format, or may input the image input signal in the HDR and/or SDR format and/or other formats. The front-end interface can be designed according to actual needs. For example, the image processing module can receive image information of the image input signal from the image transmitting device through the operation of the front-end interface for subsequent processing. The front-end interface can be, for example, a front-end interface. Circuit. In addition, the front end interface may include, for example, an image receiver and or an image splitter, and the receiver shunt may support an HDMI format or other image formats. The image processing module can convert the image information of the image input signal into the image information applicable to the SDR according to a conversion information to generate a first image output signal conforming to the SDR. The conversion information can be known as a comparison table or an instant operation. The above-mentioned "conversion" may be, for example, the image information of the SDR obtained by adjusting the image information via the image conversion formula of the conversion information, which is merely an example and is not limited thereto. The image processing module can be implemented by software or hardware circuits, such as a processor, a main control unit (MCU), a system single chip (SoC), a field programmable gate array (FPGA), and the like. The image receiving device may be a device that can perform image functions such as display/storage/streaming/live or video editing/guide, and the like, and can be implemented on a computer or a single image function device. The video receiving device may be a device that supports HDR or does not support HDR. The back-end interface circuit can include an image bridge controller, wherein the image bridge controller can be designed to conform to the format of the Fast Peripheral Interconnect Standard Bus (PCI-E BUS) or the format of the universal serial bus according to actual requirements. The image receiving device can convert the image input signal conforming to the HDR format into the first image output signal conforming to the SDR format through the image bridge controller. For example, the image receiving device can transmit related commands or messages to the image. The bridge controller controls the image processing module to perform corresponding image processing through the image bridge controller.

In addition, the image receiving device can receive the first image output signal and the second image output signal outputted from the image processing module through the back interface, wherein the second image output signal conforms to the HDR format. In actual operation, the image processing module may output a second image output signal of the HDR according to the HDR image input signal. Of course, the image processing module may be based on the HDR image input signal. The image operation produces a second image output signal of HDR, which may be, for example, a change in resolution/frame rate or other image parameters. In addition, the image processing module may be, for example, substantially synchronously outputting the first image output signal of the SDR and the second image output signal of the HDR, or may be the first image output signal of the selective output SDR or the second image output of the HDR. Signal. In the following, in order to explain in more detail, several embodiments are exemplified.

FIG. 1 is a schematic diagram of an image signal conversion device according to a first embodiment of the present invention. As shown in FIG. 1 , in the embodiment, the image signal conversion device 11 is used in conjunction with an image transmitting device 12 and an image receiving device 13 . The image signal conversion device 11 includes a front end interface 111 and an image processing module. 112 and a backend interface 113. The front end interface 111 is coupled to the image transmitting device 12 for receiving an image input signal from the image transmitting device 12, wherein the image input signal Comply with HDR format. The image processing module 112 is coupled to the front end interface 111. The image processing module 112 outputs a first image output signal V11 according to the image input signal. The first image output signal V11 conforms to the SDR format. The back end interface 113 is coupled to the image processing module 112 and the image receiving device 13 respectively. The image receiving device 13 receives the first image output signal V11 and a second output from the image processing module 112 through the back end interface 113. The image output signal V12, wherein the second image output signal V12 conforms to the HDR format.

The image processing module 112 can output the SDR first image output signal V11 and the HDR second image output signal V12 according to the image input signal, and then use the image receiving device 13 for subsequent use. Therefore, the image receiving device can be more suitable for a variety of image functions that support or do not support HDR. In this example, for example, the SDR first image output signal V11 can be used for display that does not support HDR, and the second image output signal V12 of the HDR can be stored for subsequent use, or of course, the second image output signal of the HDR is V12. It can be used for HDR-enabled screen display, and the SDR first image output signal V11 can be saved and subsequently provided for HDR screen display.

In this embodiment, the image processing module 112 can output the second image output signal V12 of the HDR according to the image input signal. In actual operation, the image processing module 112 may output a second image output signal V12 of the HDR according to the HDR image input signal. Of course, the image processing module 112 may be an image input according to the HDR. The signal is subjected to some image operations to generate an HDR second image output signal V12, which may be, for example, changing the resolution/frame rate or other image parameters. In addition, the image processing module 112 can be, for example, substantially synchronously outputting the first image output signal V11 of the SDR and the second image output signal V12 of the HDR. The substantial synchronization herein refers to a slight time difference within a reasonable tolerance range. still Within the scope of the substantial synchronization explained herein. In another example, the image processing module 112 can output the first image output signal V11 of the SDR and the second image output signal V12 of the HDR, respectively. The back end interface 113 may be a first image output signal V11 and an HDR second image output signal V12 that respectively output the SDR to the image receiving device 13 respectively.

The front-end interface can include a receiver and a shunt according to actual needs. For example, as shown in FIG. 2, the front-end interface 111 includes a high-definition multimedia interface (HDMI) receiver 1111, and receives the image in an HDMI-compliant manner. The image input signal of the transmitting device 12. The image signal conversion device 11 can be used in combination with a further image receiving device 14. The front end interface 111 further includes a high quality multimedia interface (HDMI) shunt 1112, wherein the HDMI shunt 1112 and the HDMI receiver 1111 are respectively connected to the HDMI receiver 1111. The image transmitting device 12 and the image transmitting device 11 are coupled to each other and output the image input signals to the HDMI receiver and the other image receiving device 14 respectively. In actual operation, the HDMI shunt 1112 may be outputted by means of a pass through, or may be output after changing, for example, a resolution/frame rate or other image parameters, and is not limited herein.

The image receiving device 13 can transmit the image input module compliant with the HDR format into the first image output signal V11 conforming to the SDR format. For example, the image receiving device 13 can transmit related commands. Or the message is sent to the back interface 113 to control the image processing module 112 to perform corresponding image processing through the back interface 113. In addition, the image receiving device 13 can also pass through the back end interface 113 to enable the image processing module 112 to synchronously output or output the first image output signal V11 of the SDR and the second image output signal V12 of the HDR.

Figure 3 is a diagram showing an image signal conversion device based on the second embodiment of the present invention. intention. As shown in FIG. 3, in the embodiment, the image signal conversion device 31 is combined with an image transmitting device 32 and an image receiving device 33. The image signal conversion device 31 includes a front end interface circuit 311 and a field programmable An image processor 312 of the gate array (FPGA) and a back end interface circuit 313. The front end interface circuit 311 is electrically connected to the image transmitting device 32 for receiving an image input signal from the image transmitting device 32, wherein the image input signal conforms to the HDR format. The image processor 312 of the FPGA is electrically connected to the front end interface circuit 311. The image processor 312 of the FPGA outputs a first output image output signal V31 according to the image input signal, and the first output image output signal V31 conforms to the SDR format. The back-end interface circuit 313 is electrically connected to the image processor 312 and the image receiving device 33 of the FPGA, wherein the back-end interface circuit 313 includes an image bridge controller, wherein the image bridge controller conforms to the standard peripheral bus of the fast peripheral interconnection ( In the format of the PCI-E BUS), the image receiving device 33 receives the first image output signal V31 from the image processor of the FPGA through the image bridge controller in accordance with the format of the fast peripheral interconnection standard bus.

The image processing processor 312 of the FPGA outputs the first image output signal V31 of the SDR according to the HDR image input signal for subsequent use by the image receiving device 33, such as storage, display or streaming, which can be more fully applied. The problem when the HDR format is not supported.

In this embodiment, the image processor 312 of the FPGA may selectively output the first image output signal V31 or a second image output signal V32, and the second image output signal V32 conforms to the HDR format. In addition, the image processor 312 of the FPGA outputs the second image output signal V32 of the HDR according to the image input signal. In actual operation, the image processor 312 of the FPGA may output a second image output signal V32 of the HDR according to the HDR image input signal. Of course, the image processor 312 of the FPGA may be based on HDR. The image input signal is subjected to some image operations to generate an HDR second image output signal V32. The calculation can be, for example, changing the resolution/frame rate or other image parameters. The back end interface circuit 313 can selectively output the SDR first image output signal V31 or the HDR second image output signal V32 to the image receiving device 33. Of course, the backend interface circuit 313 may have a temporary register. Even if the image processor 312 of the FPGA selectively outputs the signal V31/V32, it may be temporarily stored in the temporary storage device of the backend interface circuit 313, and then respectively The first image output signal V31 of the SDR and the second image output signal V32 of the HDR are substantially synchronously outputted to the image receiving device 33.

In this embodiment, the front-end interface circuit 311 can be designed according to actual needs, for example, including a high-definition multimedia interface (HDMI) receiver and a high-definition multimedia interface (HDMI) shunt. The receiver and the shunt are described in the foregoing embodiments, and are not described herein.

The image receiving device 33 can pass through the image bridge controller of the back interface circuit 313, so that the image processor 312 of the FPGA converts the image input signal conforming to the HDR format into the first image output signal V31 conforming to the SDR format, for example, image receiving. The device 33 can transmit an associated command or message to the image bridge controller of the backend interface circuit 313 to control the image processor 312 of the FPGA to perform corresponding image processing through the image bridge controller of the backend interface circuit 313. In addition, the image receiving device 33 can also control the image bridge controller of the back end interface circuit 313 to enable the image processor 312 of the FPGA to selectively output the first image output signal V31 of the SDR or the second image output signal V32 of the HDR. .

FIG. 4 is a schematic diagram of an image signal conversion device according to a third embodiment of the present invention. As shown in FIG. 4, in the embodiment, the image signal conversion device 41 is used in conjunction with an image transmission device 42 and an image receiving device 43. The image signal conversion device 41 includes a front end interface circuit 411 and an image processing hardware. Circuit 412 and a back end interface circuit 413. The front end interface circuit is electrically connected to the image transmitting device 42 to receive an image input signal from the image transmitting device 42. The image input signal conforms to the HDR format. The image processing hardware circuit 412 is electrically connected to the front end interface circuit 411. The image processing hardware circuit 412 outputs a first output image output signal V41 according to the image input signal, and the first output image output signal V41 conforms to the SDR format. The back-end interface circuit 413 is electrically connected to the image processing hardware circuit 412 and the image receiving device 43 respectively. The back-end interface circuit 413 includes an image bridge controller of a universal serial bus, and the image receiving device 43 transmits the universal sequence. The image bridge controller of the bus receives the first image output signal V41 from the image processing hardware circuit 412.

The image processing hardware circuit 412 outputs the first image output signal V41 of the SDR according to the HDR image input signal for subsequent use by the image receiving device 43, for example, storage, display or streaming, which can be more fully applied. The problem when the HDR format is not supported.

In this embodiment, the image processing hardware circuit 412 can selectively output the first image output signal V41 or a second image output signal V42, and the second image output signal V42 conforms to the HDR format. In addition, the image processing hardware circuit 412 outputs the second image output signal V42 of the HDR according to the image input signal. In actual operation, the image processing hardware circuit 412 can output the HDR second image output signal V42 according to the HDR image input signal. Of course, the image processing hardware circuit 412 can be based on HDR. The image input signal is subjected to some image operations to generate an HDR second image output signal V42, which may be, for example, changing the resolution/frame rate or other image parameters. The back interface circuit 413 can selectively output the SDR first image output signal V41 or the HDR second image output signal V42 to the image receiving device 43. Of course, the backend interface circuit 413 may have a temporary storage device. Even if the image processing hardware circuit 412 selectively outputs the signal V41/V42, it may be temporarily stored in the temporary storage device of the backend interface circuit 313, and then respectively The first image output signal V41 and HDR of the SDR are synchronously outputted The second image output signal V42 is to the image receiving device 43.

In this embodiment, the front-end interface circuit 411 can be designed according to actual needs, for example, including a high-definition multimedia interface (HDMI) receiver and a high-definition multimedia interface (HDMI) shunt. The receiver and the shunt are described in the foregoing embodiments, and are not described herein.

The image receiving device 43 can transmit the image processing hardware circuit 412 to convert the image input signal conforming to the HDR format into the first image output signal V41 conforming to the SDR format, by using the universal serial bus image bridge controller of the back end interface circuit 413. For example, the image receiving device 43 can transmit a related command or message to the universal sequence bus image bridge controller of the backend interface circuit 413 to control the image processing hard through the universal serial bus image bridge controller of the backend interface circuit 413. The body circuit 412 performs corresponding image processing operations. In addition, the image receiving device 43 can also be controlled by the universal serial bus image bridge controller of the back end interface circuit 413, so that the image processing hardware circuit 412 selectively outputs the first image output signal V41 of the SDR or the second image of the HDR. Image output signal V42.

FIG. 5 is a schematic diagram of an image signal conversion device according to a fourth embodiment of the present invention. As shown in FIG. 5, in the present embodiment, the image signal conversion device 51 is used in conjunction with an image transmission device 52 and an image receiving device 53. The image signal conversion device 51 includes a front end interface 511 and an image processing module 512. And a backend interface 513. The front end interface 511 is coupled to the image transmitting device 52 for receiving an image input signal from the image transmitting device 51, wherein the image input signal conforms to the HDR format. The image processing module 512 is coupled to the front end interface 511. The image processing module 511 outputs a first output image output signal V51 according to the image input signal. The first output image output signal V51 conforms to the SDR format. The back-end interface 513 is coupled to the image processing module 512 and the image receiving device 53 respectively. The back-end interface 513 includes an image bridge controller 5131. The image receiving device 53 is transparent. The image bridge controller 5131 receives the first image output signal from the image processing module 512. The image bridge controller 5131 is further coupled to the front end interface 511 for receiving an image element corresponding to the image input signal from the front end interface 511. Metadata M10 is used by the image receiving device 53.

The image processing module 512 outputs the first image output signal V51 of the SDR according to the HDR image input signal for subsequent use by the image receiving device 53, such as storage, display or streaming, which can be more fully applied. Problems when supporting the HDR format.

In this embodiment, the image metadata M10 may include high dynamic range display (HDR) information of the HDR image input signal.

The image bridge controller 5131 can be an image bridge controller of a universal sequence bus. The image bridge controller 5131 of the universal sequence bus can transmit the image metadata M10 to the image receiving device 53 in a universal sequence format. In this embodiment, the universal sequence bus image level extension unit (UVC-Extension Unit) or the universal sequence bus interface human interface unit (USB-HID) transmits the image metadata M10 to the image receiving device 53. In addition, the image receiving device 53 can also design a channel that can transmit the image metadata M10 to the image receiving device 53 in the USB format architecture under the USB format architecture, and is not limited to only the UVC-Extension Unit or USB-HID.

The image processing module 512 converts the image input signal conforming to the HDR format into a first image output signal conforming to the SDR according to a conversion information, and the conversion information is associated with the HDR information system of the image metadata. In actual operation, the conversion information can be obtained by converting the HDR information of the image metadata and the conversion function of the HDR conversion SDR. The conversion information can be known as a comparison table or an instant operation. The above "conversion" may actually be, for example, image conversion via conversion information. The formula adjusts the image information to obtain the image information of the SDR.

In this embodiment, the image processing module 512 can selectively output the first image output signal V51 or a second image output signal V52, and the second image output signal V52 conforms to the HDR format. In addition, the image processing module 512 outputs the second image output signal V52 of the HDR according to the image input signal. In actual operation, the image processing module 512 can output the HDR second image output signal V52 according to the HDR image input signal. Of course, the image processing module 512 can be based on the HDR image input. The signal is subjected to some image operations to generate an HDR second image output signal V52, which may be, for example, a change in resolution/frame rate or other image parameters. The back end interface 513 can selectively output the SDR first image output signal V51 or the HDR second image output signal V52 to the image receiving device 53. Of course, the backend interface 513 may have a temporary storage device. Even if the image processing module 512 selectively outputs the signal V51/V52, it may be temporarily stored in the temporary storage device of the backend interface 513, and then separately or substantially synchronized. The first image output signal V51 of the SDR and the second image output signal V52 of the HDR are output to the image receiving device 53.

The image receiving device 53 can transmit the image input module 512 to convert the image input signal conforming to the HDR format into the first image output signal V51 conforming to the SDR format, for example, the conversion information can be transmitted through the image bridge controller 5131 of the back end interface 513. It is stored in the image bridge controller 5131. When the image receiving device 53 transmits the related command or message to the image bridge controller 5131 of the universal serial bus of the backend interface 513, the image bridge controller 5131 of the universal sequence bus transmits the conversion information to the image processing module 512. The corresponding image processing operation is performed by the control image processing module 512. In addition, the image receiving device 53 can also control the image processing module 512 to selectively output the SDR through the control of the universal serial bus image bridge controller of the back end interface 513. The first image output signal V51 or the second image output signal V52 of the HDR.

In this embodiment, the front-end interface 511 can be designed according to actual needs, for example, including a high-definition multimedia interface (HDMI) receiver and a high-definition multimedia interface (HDMI) shunt. The receiver and the shunt are described in the foregoing embodiments, and are not described herein. In addition, the image bridge controller 5131 can be coupled to the receiver in the front end interface 511 to receive the image metadata M10 corresponding to the image input signal from the receiver of the front end interface 511.

FIG. 6 is a schematic diagram of an image signal conversion device according to a fifth embodiment of the present invention. As shown in FIG. 6, in the present embodiment, the image signal conversion device 21 and the image transmitting device 22 and the image receiving device 23 are provided. The image signal conversion device 21 includes a front end interface 211, an image processing module 212, and a back end interface 213. The front end interface 211 is coupled to the image transmitting device 22 for receiving an image input signal from the image transmitting device 22, wherein the image input signal conforms to a first frame rate format. The image processing module 212 is coupled to the front end interface 211. The image processing module 212 outputs a first output image output signal V21 according to the image input signal. The first output image output signal V21 conforms to a second frame rate format. The back end interface 213 is coupled to the image processing module 212 and the image receiving device 23, wherein the image receiving device 23 receives the first image output signal V21 and the second image output signal from the image processing module 212 through the back end interface 213. V22, wherein the second image output signal V22 conforms to the format of the first frame rate.

The image processing module 212 can output the first image output signal V21 of the second frame rate and the second image output signal V22 of the first frame rate according to the image input signal, and then use the image receiving device 23 for subsequent use. Therefore, the image receiving device can be more suitable for more simultaneous image functions. In this example, for example, the second frame rate (eg, low frame rate) first video output signal V21 can be used to stream save bandwidth. a second image output signal at a first frame rate (eg, a high frame rate) The V22 can be stored and later used by the user for high frame rate images.

The first frame rate may be greater than the second frame rate, but is not limited thereto. In this embodiment, the first frame rate may be greater than or equal to 60 frames per second (FPS), and the second frame rate may be less than or equal to 60 frames per second (FPS).

In this embodiment, the image processing module 212 can output the second image output signal V22 of the first frame rate according to the image input signal. In actual operation, the image processing module 212 can output a second image output signal V22 of the first frame rate by using a signal input signal according to the first frame rate. Of course, the image processing module 212 can The image input signal according to the first frame rate is subjected to some image operations to generate a second image output signal V22 of a first frame rate, and the image operations may be, for example, changing the resolution/or HDR to SDR or other image parameters. In addition, the image processing module 212 can, for example, substantially simultaneously output the first image output signal V21 of the second frame rate and the second image output signal V22 of the first frame rate. The substantial synchronization herein refers to the reasonable tolerance. There are still some slight time differences within the range that are still within the scope of the substantial synchronization explained herein. In another example, the image processing module 212 can output the first image output signal V21 of the second frame rate and the second image output signal V22 of the first frame rate. The back interface 213 may be a first image output signal V21 that outputs a second frame rate and a second image output signal V22 of the first frame rate to the image receiving device 23, respectively.

The image receiving device 23 can pass through the back end interface 213, so that the image processing module 212 converts the image input signal conforming to the first frame rate into the first image output signal V21 that meets the second frame rate. For example, the image receiving device 23 can The related commands or messages are transmitted to the backend interface 113 to control the image processing module 212 to perform corresponding image processing operations through the backend interface 213. In addition, the image receiving device 23 can also pass through the back end interface 213, so that the image processing module 212 is The real value synchronous output or the first image output signal V21 of the second frame rate and the second image output signal V22 of the first frame rate are respectively output.

In summary, the technical content of the present invention provides an image signal conversion device, so that the problem of multiple image function applications can be more comprehensively applied.

Although the present invention is disclosed in the above embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this case is attached. The scope of the patent application is subject to change.

Claims (9)

An image signal conversion device is used in combination with an image transmitting device and an image receiving device, and includes: a front end interface coupled to the image transmitting device for receiving an image input signal from the image transmitting device, wherein the image is The input signal is in a format of a first frame rate; an image processing module is coupled to the front end interface, and the image processing module outputs a first output image output signal according to the image input signal, The first image output device is in a format of a second frame rate; and a back end interface is coupled to the image processing module and the image receiving device, wherein the image receiving device receives the image through the back end interface The first image output signal and the second image output signal of the image processing module, wherein the second image output signal conforms to the format of the first frame rate. The image signal conversion device of claim 1, wherein the first frame rate is greater than the second frame rate. The image signal conversion device of claim 1, wherein the first frame rate is greater than or equal to 60 frames per second (FPS), wherein the second frame rate is less than or equal to 60 frames per second (FPS). The image signal conversion device of claim 1, wherein the image processing module outputs the second image output signal according to the image input signal. The image signal conversion device of claim 1, wherein the image processing module synchronously outputs the first image output signal and the second image output signal. The image signal conversion device of claim 1, wherein the image processing module is an image processing hardware circuit. The image signal conversion device of claim 6, wherein the image processing hardware circuit is a system single chip (SoC) image processor or a field programmable gate array (FPGA) image processor. The image signal conversion device of claim 1, wherein the front end interface comprises a high-quality multimedia interface (HDMI) receiver, and the image input is received from the image transmitting device in a manner consistent with a high-definition multimedia interface format. Signal. The image signal conversion device of claim 8, wherein the image signal conversion device is used in combination with a further image receiving device, wherein the front end interface further comprises a high quality multimedia interface (HDMI) shunt, wherein the The high-definition multimedia interface shunt is coupled to the high-definition multimedia interface receiver and the image transmitting device, and separately outputs the image input signal to the high-quality multimedia interface receiver and the other image receiving device. .