US20220256113A1 - Video signal conversion device - Google Patents
Video signal conversion device Download PDFInfo
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- US20220256113A1 US20220256113A1 US17/729,736 US202217729736A US2022256113A1 US 20220256113 A1 US20220256113 A1 US 20220256113A1 US 202217729736 A US202217729736 A US 202217729736A US 2022256113 A1 US2022256113 A1 US 2022256113A1
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 59
- 238000010586 diagram Methods 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G5/005—Adapting incoming signals to the display format of the display terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0127—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G5/006—Details of the interface to the display terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/741—Circuitry for compensating brightness variation in the scene by increasing the dynamic range of the image compared to the dynamic range of the electronic image sensors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/50—Control of the SSIS exposure
- H04N25/57—Control of the dynamic range
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- H04N5/2355—
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H04N5/355—
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0125—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards being a high definition standard
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2370/00—Aspects of data communication
- G09G2370/12—Use of DVI or HDMI protocol in interfaces along the display data pipeline
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
Definitions
- the present invention generally relates to a conversion device, and more particularly, to a video conversion device.
- the high dynamic range (HDR) video is getting more and more accepted by the frontend video source device, for example, the video game console PS4 have output game video supporting HDR format.
- the backend video manufacturers do not consider whether backend video recovering end supports the HDR formation, for example, during video recording, display and other video application.
- the signal from the frontend to backend is the video signal of HDR format but the backend (the video receiving end) does not support the HDR format, the user may easily become aware that the video format fails to meet the caused color anomaly.
- the present invention is to provide a video signal conversion device, which is cooperated with a video transmitting device and a video receiving device.
- the video signal conversion device includes a frontend circuit, a FPGA video processor and a backend circuit.
- the frontend circuit is electrically connected with the video transmitting device to receive the video input signal from the video transmitting device, where the video input signal is HDR signal.
- the FPGA video processor is electrically connected with the frontend circuit. According to the video input signal, the FPGA video processor outputs a first video output signal, and the first video output signal is SDR signal.
- the backend circuit is electrically connected with the FPGA video processor and the video receiving device respectively, wherein, the backend circuit includes a video bridge controller, the video bridge controller is PCI-E BUS, and the video receiving device meets PCI-E BUS format by the video bridge controller to receive the first video output signal from the FPGA video processor.
- the video signal conversion device can more fully solve the problems that the backend video receiving end does not support HDR or the backend video receiving end requires SDR.
- FIG. 1 is a schematic diagram showing a video signal conversion device according to a first embodiment of the invention.
- FIG. 2 is a schematic diagram showing a frontend interface of the video signal conversion device according to the first embodiment of the invention.
- FIG. 3 is a schematic diagram showing a video signal conversion device according to a second embodiment of the invention.
- FIG. 4 is a schematic diagram showing a video signal conversion device according to a third embodiment of the invention.
- FIG. 5 is a schematic diagram showing a video signal conversion device according to a fourth embodiment of the invention.
- FIG. 6 is a schematic diagram showing a video signal conversion device according to a fifth embodiment of the invention.
- the first”, “the second”, etc. are not specifically meant to refer to the order, nor are they intended to limit the application, but are merely used to distinguish elements or operations that are described in the same technical terms.
- Coupled may mean that two or more elements or devices are directly contacted in physical with each other, or indirectly contacted in physical with each other, may also mean that two or more elements or devices operate or interact with each other, and may also refer to a direct or indirect connection by electrical (or electrical signals).
- video input signal and “video output signal” mentioned in this specification refer to signals containing at least video information, and of course, audio and video signals, and there is no limit here.
- a video signal conversion device disclosed in the embodiment may be cooperated with a video transmitting device and a video receiving device.
- the video signal conversion device includes a frontend interface, a video processing module and a backend interface.
- the frontend interface is coupled with the video transmitting device to receive the video input signal from the video transmitting device, where the video input signal is high dynamic range signal.
- the “high dynamic range” is hereinafter referred to as HDR.
- the video processing module is coupled with the frontend interface. According to the video input signal, the video processing module outputs the first video output signal, wherein the first video output signal is standard display range signal.
- the “standard display range” is hereinafter referred to as SDR.
- the backend interface is coupled with the video processing module and the video receiving device respectively, wherein the video receiving device receives the first video output signal from the video processing module by the backend interface.
- the video transmitting device may send the HDR video input signal at least, for example, it may only send HDR video input signal, or may send HDR and/or SDR, or other video input signal.
- the frontend interface may have different designs subject to actual requirement, for example, the video processing module may be operated by the frontend interface and receives the video information of the video input signal from the video transmitting device for subsequent processing.
- the frontend interface may be the frontend circuit.
- the frontend interface may, for example, include a video receiving device, or a video shunt, which support HDMI or other format videos respectively.
- the video processing module may, for example, convert the video information of the video input signal into SDR video information to generate SDR first video output signal.
- the conversion information may be known by comparison tables or real-time operations. For the above conversion, actually, for example, it may be SDR video information obtained by adjusting the video information video conversion formula of the conversion information, and this is only used as example and does not limit this invention.
- the video processing module may be implemented by software or hardware circuit, for example, a processor, a main control unit (MCU), a system on a chip (SoC), a field programmable gate array (FPGA), etc.
- the video receiving device may be the device performing video functions, such as display/save/stream/live or video edit/export, and the device realized in a computer or single video function.
- the video receiving device may be the device supporting or not supporting HDR.
- the backend circuit may include a video bridge controller, and the video bridge controller may be designed to PCI-E BUS or USB.
- the video receiving device enables the video processing module by the video bridge controller to convert the HDR video input signal to the SDR first video output signal, for example, the video receiving device transmits relevant command or information to the video bridge controller to control the video processing module for corresponding video processing by the video bridge controller.
- the video receiving device may receive the first video output signal and/or the second video output signal from the video processing module by the backend interface, wherein the second video output signal is HDR signal.
- the video processing module outputs the HDR second video output signal by pass-through.
- the video processing module may generate the HDR second video output signal by video operation.
- These video operations may be, for example, change of resolution/frame rate or other video parameters.
- the video processing module may, for example, substantially synchronously output the SDR first video output signal and the HDR second video output signal, or selectively output the SDR first video output signal or the HDR second video output signal.
- FIG. 1 shows the schematic diagram of the video signal conversion device of the first embodiment.
- the video signal conversion device 11 is used together with the video transmitting device 12 and the video receiving device 13 .
- the video signal conversion device 11 includes a frontend interface 111 , a video processing module 112 and a backend interface 113 .
- the frontend interface 111 is coupled with the video transmitting device 12 to receive the video input signal from the video transmitting device 12 , wherein the video input signal is HDR signal.
- the video processing module 112 is coupled with frontend interface 111 . According to the video input signal, the video processing module 112 outputs the first video output signal V 11 , wherein, the first video output signal V 11 is SDR signal.
- the backend interface 113 is coupled respectively with the video processing module 112 and the video receiving device 13 , wherein, the video receiving device 13 receives the first video output signal V 11 and the second video output signal V 12 from the video processing module 112 , and the second video output signal V 12 is HDR signal.
- the video processing module 112 outputs the SDR first video output signal V 11 and the HDR second video output signal V 12 for the follow-up use by the video receiving device 13 , the video receiving device may be more suitable for a plurality of video functions supporting or not supporting HDR.
- the SDR first video output signal V 11 may be displayed on the screen not supporting HDR, and the HDR second video output signal V 12 may be stored for follow-up use.
- the HDR second video output signal V 12 may be displayed on the screen supporting HDR, while the SDR first video output signal V 11 may be stored for display in the screen not supporting HDR.
- the video processing module 112 may output the HDR second video output signal V 12 .
- the video processing module 112 may output the HDR second video output signal V 12 by pass-though.
- the video processing module 112 may generate the HDR second video output signal V 12 by video operation. This video operation may be, for example, change of resolution rate, frame rate or other video parameters.
- the video processing module 112 may, for example, substantially synchronously output the SDR video output signal V 11 and the HDR second video output signal V 12 .
- the “substantially synchronously” means smaller time difference within allowable range is deemed as “substantially synchronously”.
- the video processing module 112 may respectively output the SDR first video output signal V 11 and the HDR second video output signal V 12 .
- the backend interface 113 may respectively or substantially synchronously output the SDR first video output signal V 11 and the HDR second video output signal V 12 to the video receiving device 13 .
- the frontend interface includes a receiving device and a shunt, for example, as shown in FIG. 2 , the frontend interface 111 includes a HDMI receiving device 1111 receiving the HDMI video input signal from the video transmitting device 12 .
- the video signal conversion device 11 may be cooperated with another video receiving device 14 , wherein, the frontend interface 111 further includes a HDMI shunt 1112 , wherein the HDMI shunt 1112 is respectively coupled with the HDMI receiving device 1111 , the video transmitting device 12 and the another video receiving device 14 and shunts the video input signal to the HDMI receiving device 1111 and another video receiving device 14 .
- the HDMI shunt 1112 may output the signal by pass-through, or change of the resolution/frame rate or other video parameters, without limitation.
- the video receiving device 13 may enable the video processing module 112 by the backend interface 113 to convert the HDR video input signal to the SDR first video output signal V 11 , for example, the video receiving device 13 transmits relevant command or information to the backend interface 113 to control the video processing module 112 for corresponding video processing by the backend interface 113 . Additionally, the video receiving device 13 may also enable the video processing module 112 to substantially synchronously or respectively the SDR first video output signal V 11 and the HDR second video output signal V 12 by the backend interface 113 .
- FIG. 3 shows the schematic diagram of the video signal conversion device according to the second embodiment.
- the video signal conversion device 31 is cooperated with the video transmitting device 32 and the video receiving device 33 .
- the video signal conversion device 31 includes a frontend interface 311 , a FPGA video processor 312 and a backend circuit 313 .
- the frontend interface 311 is electrically connected with video transmitting device 32 to receive the video input signal from the video transmitting device 32 , wherein the video input signal is HDR signal.
- the FPGA video processor 312 is electrically connected with the frontend circuit 311 . According to the video input signal, the FPGA video processor 312 outputs the first video output signal V 31 , wherein, the first video output signal V 31 is SDR signal.
- the backend circuit 313 is electrically connected with the FPGA video processor 312 and the video receiving device 33 , wherein, the backend circuit 313 includes a video bridge controller, and the video bridge controller is PCI-E BUS.
- the video receiving device 33 receives the PCI-E BUS first video output signal V 31 from the FPGA video processor 312 by the video bridge controller.
- the FPGA video processor 312 also may be a SoC video processor.
- the FPGA video processor 312 outputs the SDR first video output signal V 31 for follow-up use by the video receiving device 33 , such as storage, display, or series flow, etc., to more fully apply for supporting HDR.
- the FPGA video processor 312 may selectively output the first video output signal V 31 or the second video output signal V 32 , wherein the second video output signal V 32 is HDR signal. In addition, according to the video input signal, the FPGA video processor 312 outputs the HDR second video output signal V 32 . During actual operation, according to HDR video input signal, the FPGA video processor 312 outputs the HDR second video output signal V 32 by pass-through. Of course, according to the HDR video input signal, the FPGA video processor 312 may generate the HDR second video output signal V 32 by video operation. These video operations may be, for example, change of resolution/frame rate or other video parameters.
- the backend circuit 313 may, for example, selectively output the SDR first video output signal V 31 or the HDR second video output signal V 32 to the video receiving device 33 .
- a buffer may be arranged on the backend circuit 313 . Even if the FPGA video processor 312 selectively outputs the signal V 31 /V 32 , by temporary storage in the buffer of the backend circuit 313 , the SDR first video output signal V 31 and the HDR second video output signal V 32 may be respectively or substantially synchronously outputted to the video receiving device 33 .
- the frontend circuit 311 may have different design, for example, including a HDMI receiving device and a HDMI shunt.
- the receiving device and the shunt have been described in the previous embodiment, and not are repeated in this embodiment.
- the video receiving device 33 may enable the FPGA video processor 312 by the video bridge controller of the backend circuit 313 to convert the HDR video input signal to the SDR first video output signal V 31 , for example, the video receiving device 33 transmits relevant command or information to the video bridge controller of the backend circuit 313 to control the FPGA video processor 312 for video processing by the video bridge controller of the backend circuit 313 .
- the video receiving device 33 may enable the FPGA video processor 312 by the video bridge controller of the backend circuit 313 to selectively output the SDR first video output signal V 31 or the HDR second video output signal V 32 .
- FIG. 4 shows the schematic diagram of the video signal conversion device according to the third embodiment.
- the video signal conversion device 41 is cooperated with the video transmitting device 42 and the video receiving device 43 .
- the video signal conversion device 41 includes a frontend interface 411 , a video processing hardware circuit 412 and a backend interface circuit 413 .
- the frontend circuit is electrically connected with video transmitting device 42 to receive the video input signal from the video transmitting device 42 , wherein the video input signal is HDR signal.
- the video processing hardware circuit 412 is electrically connected with frontend circuit 411 . According to the video input signal, the video processing hardware circuit 412 outputs the first video output signal V 41 , wherein, the first video output signal V 41 is SDR signal.
- the backend interface circuit 413 is electrically connected respectively with the video processing hardware circuit 412 and the video receiving device 43 , wherein, the backend interface circuit 413 includes a USB video bridge controller.
- the video receiving device 43 receives the first video output signal V 41 from the video processor 412 by the USB video bridge controller.
- the video processing hardware circuit 412 outputs the SDR first video output signal V 31 for follow-up use by the video receiving device 43 , such as storage, display, or series flow, etc., to more fully apply for supporting HDR.
- the video processing hardware circuit 412 may selectively outputs the first video output signal V 41 or the second video output signal V 42 , wherein the second video output signal V 42 is HDR signal.
- the video processing hardware circuit 412 outputs the HDR second video output signal V 42 .
- the video processing hardware circuit 412 outputs the HDR second video output signal V 42 by pass-through.
- the video processing hardware circuit 412 may generate the HDR second video output signal V 42 by video operation. These video operations may be, for example, change of resolution/frame rate or other video parameters.
- the backend interface circuit 413 may, for example, selectively output the SDR first video output signal V 41 or the HDR second video output signal V 42 to the video receiving device 43 .
- the signal may be temporarily stored in a buffer of the backend interface circuit 413 .
- the video processing hardware circuit 412 selectively outputs the signal V 41 /V 42 , by temporary storage in the buffer of the backend interface circuit 413 , the SDR first video output signal V 41 and the HDR second video output signal V 42 may be respectively or substantially synchronously outputted to the video receiving device 43 .
- the frontend circuit 411 may have different design, for example, including a HDMI receiving device and a HDMI shunt.
- the receiving device and the shunt have been described in the previous embodiment, and not are repeated in this embodiment.
- the video receiving device 43 may enable the video processing hardware circuit 412 by the USB video bridge controller of the backend interface circuit 413 to convert the HDR video input signal to the SDR first video output signal V 41 , for example, the video receiving device 43 transmits relevant command or information to the video bridge controller of the backend interface circuit 413 to control the video processing hardware circuit 412 for video processing by the USB video bridge controller of the backend interface circuit 413 .
- the video receiving device 43 may enable the video processing hardware circuit 412 by the video bridge controller of the backend interface circuit 413 to selectively output the SDR first video output signal V 41 or the HDR second video output signal V 42 .
- FIG. 5 shows the schematic diagram of the video signal conversion device according to the fourth embodiment.
- the video signal conversion device 51 is cooperated with the video transmitting device 52 and the video receiving device 53 .
- the video signal conversion device 51 includes a frontend interface 511 , a video processing module 512 and a backend interface 513 .
- the frontend interface 511 is coupled with the video transmitting device 52 to receive the video input signal from the video transmitting device 51 , wherein the video input signal is HDR signal.
- the video processing module 512 is coupled with the frontend interface 511 . According to the video input signal, the video processing module 511 outputs the first video output signal V 51 , wherein, the first video output signal V 51 is SDR signal.
- the backend interface 513 is electrically connected respectively with the video processing module 512 and the video receiving device 53 , wherein, the backend interface 513 includes a video bridge controller 5131 .
- the video receiving device 53 receives the first video output signal V 51 from the video processing module 512 by the video bridge controller 5131 , wherein the video bridge controller 5131 is coupled with the frontend interface 511 to receive the video metadata M 10 corresponding to the video input signal from the frontend interface 511 for use by the video receiving device 53 .
- the video processing module 512 outputs the SDR first video output signal V 51 for follow-up use by the video receiving device 53 , such as storage, display, or series flow, etc., to more fully apply for supporting HDR.
- the video metadata M 10 includes the HDR information on HDR video input signal.
- the video bridge controller 5131 may be a USB video bridge controller.
- the USB video bridge controller 5131 transmits the video metadata M 10 to the video receiving device 53 by a universal sequence.
- a USB video extension unit (UVC-Extension Unit) or a USB human-interface unit (USB-HID) transmits the video metadata M 10 to the video receiving device 53 .
- a channel is designed on the video receiving device 53 to transmit the video metadata M 10 from the backend interface 513 to the video receiving device 53 , without limitation to UVC-Extension Unit or USB-HID.
- the video processing module 512 may convert the HDR video input signal to the SDR first video output signal.
- the conversion information is related with the HDR information of the video metadata.
- the conversion information may be obtained by the HDR information and the HDR-SDR conversion function.
- the conversion information may be known by comparison tables or real-time operations. For the above conversion, actually, for example, it may be SDR video information obtained by adjusting the video information video conversion formula of the conversion information.
- the video processing module 512 may selectively outputs the first video output signal V 51 or the second video output signal V 52 , wherein the second video output signal V 52 is HDR signal. Additionally, according to the video input signal, the video processing module 512 outputs the second video output signal V 52 . During actual operation, according to the HDR video input signal, the video processing module 512 outputs the HDR second video output signal V 52 by pass-through. Of course, according to the HDR video input signal, the video processing module 512 may generate the HDR second video output signal V 52 by video operation. These video operations may be, for example, change of resolution/frame rate or other video parameters.
- the backend interface 513 may selectively output the SDR first video output signal V 51 or the HDR second video output signal V 52 to the video receiving device 53 .
- a buffer is arranged on the backend interface 513 . Even if the video processing module 512 selectively outputs the signal V 51 /V 52 , by temporary storage in the buffer of the backend interface 513 , the SDR first video output signal V 51 and the HDR second video output signal V 52 may be respectively or substantially synchronously outputted to the video receiving device 53 .
- the video receiving device 53 may enable the video processing module 512 by the video bridge controller 5131 of the backend interface 513 to convert the HDR video input signal to the SDR first video output signal V 51 , for example, the conversion information may be stored in the video bridge controller 5131 .
- the video receiving device 53 transmits relevant command or information to the USB video bridge controller 5131 of the backend interface 513
- the USB video bridge controller 5131 transmits the conversion information to the video processing module 512 so as to control the video processing module 512 for corresponding video processing.
- the video receiving device 53 may enable the video processing module 512 by the USB video bridge controller of the backend interface 513 to selectively output the SDR first video output signal V 51 or the HDR second video output signal V 52 .
- the frontend interface 511 may have different design according to actual requirement, for example, including a HDMI receiving device and a HDMI shunt.
- the receiving device and the shunt have been described in the previous embodiment, and not are repeated in this embodiment.
- the video bridge controller 5131 may be coupled with the receiving device of the frontend interface 511 to receive the video metadata M 10 corresponding to the video input signal from the receiving device of the frontend interface 511 .
- FIG. 6 shows the schematic diagram of the video signal conversion device according to the fifth embodiment.
- the video signal conversion device 21 is cooperated with the video transmitting device 22 and the video receiving device 23 .
- the video signal conversion device 21 includes a frontend interface 211 , a video processing module 212 and a backend interface 213 .
- the frontend interface 211 is coupled with the video transmitting device 22 to receive the video input signal from the video transmitting device 22 , wherein the video input signal is a signal with a first frame rate.
- the video processing module 212 is coupled with the frontend interface 211 .
- the video processing module 212 outputs the first video output signal V 21 , wherein, the first video output signal V 21 is a signal with a second frame rate.
- the backend interface 213 is respectively coupled with the video processing module 212 and the video receiving device 23 , wherein, the video receiving device 23 receives the first video output signal V 21 and the second video output signal V 22 from the video processing module 212 by the backend interface 213 , wherein the second video output signal V 22 is a signal with the first frame rate.
- the video processing module 212 may output the first video output signal V 21 with the second frame rate and the second video output signal V 22 with the first frame rate for follow-up use by the video receiving device 23 , the video receiving device is more suitable for the video functions operating simultaneously.
- the first video output signal V 21 with the second frame rate e.g. low frame rate
- the second video output signal V 22 with the first frame rate e.g. high frame rate
- the first frame rate may be higher than the second frame rate, which is not deemed limited.
- the first frame rate is equal to or higher than 60 frames/s (FPS) while the second frame rate equal to or lower than 60 frames/s (FPS).
- the video processing module 212 outputs the second video output signal V 22 with the first frame rate.
- the video processing module 212 outputs the second video output signal V 22 with the first frame rate by pass-through.
- the video processing module 212 may generate the second video output signal V 22 with the first frame rate by video operation. These video operations may be, for example, change of resolution/frame rate or other video parameters.
- the video processing module 212 may, for example, substantially synchronously output the first video output signal V 21 with the second frame rate and the second video output signal V 22 with the first frame rate.
- the video processing module 212 may respectively output the first video output signal V 21 with the second frame rate and the second video output signal V 22 with the first frame rate.
- the backend interface 213 may respectively or substantially synchronously output the first video output signal V 21 with the second frame rate and the second video output signal V 22 with the first frame rate to the video receiving device 23 .
- the video receiving device 23 may enable the video processing module 212 by the backend interface 213 to convert the video input signal with the first frame rate to the first video output signal V 21 with the second frame rate, for example, the video receiving device 23 transmits relevant command or information to the backend interface 113 to control the video processing module 212 for corresponding video processing by the backend interface 213 . Additionally, the video receiving device 23 enables the video processing module 212 to substantially synchronously or respectively output the first video output signal V 21 with the second frame rate and the second video output signal V 22 with the first frame rate by the backend interface 213 .
- the video signal conversion device can more fully solve the problems that the backend video receiving end does not support HDR or the backend video receiving end requires SDR.
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Abstract
A video signal conversion device includes a frontend interface circuit, a FPGA video processor and a backend interface circuit. The frontend interface circuit receives a HDR video input signal from a video transmitting device. The FPGA video processor outputs a SDR first video output signal. A video receiving device receives the first video output signal and a HDR second video output signal from the FPGA video processor through the video bridge controller of the backend interface circuit by PCI-E.
Description
- This application is a continuation application of U.S. application Ser. No. 17/095,779 filed Nov. 12, 2020, which is a divisional application of U.S. application Ser. No. 16/395,393 filed Apr. 26, 2019, which claims priority to Taiwan Application No. 107114650 filed Apr. 30, 2018.
- The present invention generally relates to a conversion device, and more particularly, to a video conversion device.
- At present, the high dynamic range (HDR) video is getting more and more accepted by the frontend video source device, for example, the video game console PS4 have output game video supporting HDR format. At present, however, in the design of the video product, the backend video manufacturers do not consider whether backend video recovering end supports the HDR formation, for example, during video recording, display and other video application. In this case, for example, when the signal from the frontend to backend (a video receiving end) is the video signal of HDR format but the backend (the video receiving end) does not support the HDR format, the user may easily become aware that the video format fails to meet the caused color anomaly.
- Therefore, it is obvious that existing video transmitting device has the problems to be solved.
- The present invention is to provide a video signal conversion device, which is cooperated with a video transmitting device and a video receiving device. The video signal conversion device includes a frontend circuit, a FPGA video processor and a backend circuit. The frontend circuit is electrically connected with the video transmitting device to receive the video input signal from the video transmitting device, where the video input signal is HDR signal. The FPGA video processor is electrically connected with the frontend circuit. According to the video input signal, the FPGA video processor outputs a first video output signal, and the first video output signal is SDR signal. The backend circuit is electrically connected with the FPGA video processor and the video receiving device respectively, wherein, the backend circuit includes a video bridge controller, the video bridge controller is PCI-E BUS, and the video receiving device meets PCI-E BUS format by the video bridge controller to receive the first video output signal from the FPGA video processor.
- Therefore, according to the technical content of the invention, the video signal conversion device can more fully solve the problems that the backend video receiving end does not support HDR or the backend video receiving end requires SDR.
- The detailed technology and preferred embodiments implemented for the subject invention are described in the following paragraphs accompanying the appended drawings for people skilled in this field to well appreciate the features of the claimed invention.
- The parts in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of at least one embodiment. In the drawings, like reference numerals designate corresponding parts throughout the various diagrams, and all the diagrams are schematic.
-
FIG. 1 is a schematic diagram showing a video signal conversion device according to a first embodiment of the invention. -
FIG. 2 is a schematic diagram showing a frontend interface of the video signal conversion device according to the first embodiment of the invention. -
FIG. 3 is a schematic diagram showing a video signal conversion device according to a second embodiment of the invention. -
FIG. 4 is a schematic diagram showing a video signal conversion device according to a third embodiment of the invention. -
FIG. 5 is a schematic diagram showing a video signal conversion device according to a fourth embodiment of the invention. -
FIG. 6 is a schematic diagram showing a video signal conversion device according to a fifth embodiment of the invention. - Reference will now be made to the drawings to describe various inventive embodiments of the present disclosure in detail, wherein like numerals refer to like elements throughout.
- The terminology used herein is for the purpose of describing the particular embodiment and is not intended to limit the application. The singular forms “a”, “an”, “the”, “this” and “these” may also include the plural.
- As used herein, “the first”, “the second”, etc., are not specifically meant to refer to the order, nor are they intended to limit the application, but are merely used to distinguish elements or operations that are described in the same technical terms.
- As used herein, “coupled” or “connected” may mean that two or more elements or devices are directly contacted in physical with each other, or indirectly contacted in physical with each other, may also mean that two or more elements or devices operate or interact with each other, and may also refer to a direct or indirect connection by electrical (or electrical signals).
- As used herein, “including”, “comprising”, “having”, and the like are all open type terms, meaning to include but not limited to.
- As used herein, “and/or” includes any one or all combinations of the recited.
- Regarding the directional terminology used herein, for example, up, down, left, right, front or back, etc., only refers to the direction of the additional drawing. Therefore, the directional terminology used is used to illustrate that it is not intended to limit the application.
- The terms used in this specification, unless otherwise noted, usually have the usual meaning of each term used in this field, in the context of the application, 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 invention.
- As used herein, “video input signal” and “video output signal” mentioned in this specification refer to signals containing at least video information, and of course, audio and video signals, and there is no limit here.
- A video signal conversion device disclosed in the embodiment may be cooperated with a video transmitting device and a video receiving device. The video signal conversion device includes a frontend interface, a video processing module and a backend interface. The frontend interface is coupled with the video transmitting device to receive the video input signal from the video transmitting device, where the video input signal is high dynamic range signal. The “high dynamic range” is hereinafter referred to as HDR. The video processing module is coupled with the frontend interface. According to the video input signal, the video processing module outputs the first video output signal, wherein the first video output signal is standard display range signal. The “standard display range” is hereinafter referred to as SDR. The backend interface is coupled with the video processing module and the video receiving device respectively, wherein the video receiving device receives the first video output signal from the video processing module by the backend interface.
- The video transmitting device may send the HDR video input signal at least, for example, it may only send HDR video input signal, or may send HDR and/or SDR, or other video input signal. The frontend interface may have different designs subject to actual requirement, for example, the video processing module may be operated by the frontend interface and receives the video information of the video input signal from the video transmitting device for subsequent processing. For example, the frontend interface may be the frontend circuit. Additionally, the frontend interface may, for example, include a video receiving device, or a video shunt, which support HDMI or other format videos respectively. According to the conversion signal, the video processing module may, for example, convert the video information of the video input signal into SDR video information to generate SDR first video output signal. The conversion information may be known by comparison tables or real-time operations. For the above conversion, actually, for example, it may be SDR video information obtained by adjusting the video information video conversion formula of the conversion information, and this is only used as example and does not limit this invention. The video processing module may be implemented by software or hardware circuit, for example, a processor, a main control unit (MCU), a system on a chip (SoC), a field programmable gate array (FPGA), etc. The video receiving device may be the device performing video functions, such as display/save/stream/live or video edit/export, and the device realized in a computer or single video function. The video receiving device may be the device supporting or not supporting HDR. The backend circuit may include a video bridge controller, and the video bridge controller may be designed to PCI-E BUS or USB. The video receiving device enables the video processing module by the video bridge controller to convert the HDR video input signal to the SDR first video output signal, for example, the video receiving device transmits relevant command or information to the video bridge controller to control the video processing module for corresponding video processing by the video bridge controller.
- Additionally, the video receiving device may receive the first video output signal and/or the second video output signal from the video processing module by the backend interface, wherein the second video output signal is HDR signal. During actual operation, according to the HDR video input signal, the video processing module outputs the HDR second video output signal by pass-through. Of course, according to the HDR video input signal, the video processing module may generate the HDR second video output signal by video operation. These video operations may be, for example, change of resolution/frame rate or other video parameters. Additionally, the video processing module may, for example, substantially synchronously output the SDR first video output signal and the HDR second video output signal, or selectively output the SDR first video output signal or the HDR second video output signal. The detailed description is given below by embodiments.
-
FIG. 1 shows the schematic diagram of the video signal conversion device of the first embodiment. As shown inFIG. 1 , the videosignal conversion device 11 is used together with thevideo transmitting device 12 and thevideo receiving device 13. The videosignal conversion device 11 includes afrontend interface 111, avideo processing module 112 and abackend interface 113. Thefrontend interface 111 is coupled with thevideo transmitting device 12 to receive the video input signal from thevideo transmitting device 12, wherein the video input signal is HDR signal. Thevideo processing module 112 is coupled withfrontend interface 111. According to the video input signal, thevideo processing module 112 outputs the first video output signal V11, wherein, the first video output signal V11 is SDR signal. Thebackend interface 113 is coupled respectively with thevideo processing module 112 and thevideo receiving device 13, wherein, thevideo receiving device 13 receives the first video output signal V11 and the second video output signal V12 from thevideo processing module 112, and the second video output signal V12 is HDR signal. - As according to the video input signal, the
video processing module 112 outputs the SDR first video output signal V11 and the HDR second video output signal V12 for the follow-up use by thevideo receiving device 13, the video receiving device may be more suitable for a plurality of video functions supporting or not supporting HDR. In this embodiment, for example, the SDR first video output signal V11 may be displayed on the screen not supporting HDR, and the HDR second video output signal V12 may be stored for follow-up use. Of course, or, the HDR second video output signal V12 may be displayed on the screen supporting HDR, while the SDR first video output signal V11 may be stored for display in the screen not supporting HDR. - According to the video input signal, the
video processing module 112 may output the HDR second video output signal V12. During actual operation, according to the HDR video input signal, thevideo processing module 112 may output the HDR second video output signal V12 by pass-though. Of course, according to the HDR video input signal, thevideo processing module 112 may generate the HDR second video output signal V12 by video operation. This video operation may be, for example, change of resolution rate, frame rate or other video parameters. Additionally, thevideo processing module 112 may, for example, substantially synchronously output the SDR video output signal V11 and the HDR second video output signal V12. The “substantially synchronously” means smaller time difference within allowable range is deemed as “substantially synchronously”. In another embodiment, thevideo processing module 112 may respectively output the SDR first video output signal V11 and the HDR second video output signal V12. The backend interface113 may respectively or substantially synchronously output the SDR first video output signal V11 and the HDR second video output signal V12 to thevideo receiving device 13. - According to actual requirement, the frontend interface includes a receiving device and a shunt, for example, as shown in
FIG. 2 , thefrontend interface 111 includes aHDMI receiving device 1111 receiving the HDMI video input signal from thevideo transmitting device 12. The videosignal conversion device 11 may be cooperated with anothervideo receiving device 14, wherein, thefrontend interface 111 further includes aHDMI shunt 1112, wherein theHDMI shunt 1112 is respectively coupled with theHDMI receiving device 1111, thevideo transmitting device 12 and the anothervideo receiving device 14 and shunts the video input signal to theHDMI receiving device 1111 and anothervideo receiving device 14. During actual operation, theHDMI shunt 1112 may output the signal by pass-through, or change of the resolution/frame rate or other video parameters, without limitation. - The
video receiving device 13 may enable thevideo processing module 112 by thebackend interface 113 to convert the HDR video input signal to the SDR first video output signal V11, for example, thevideo receiving device 13 transmits relevant command or information to thebackend interface 113 to control thevideo processing module 112 for corresponding video processing by thebackend interface 113. Additionally, thevideo receiving device 13 may also enable thevideo processing module 112 to substantially synchronously or respectively the SDR first video output signal V11 and the HDR second video output signal V12 by thebackend interface 113. -
FIG. 3 shows the schematic diagram of the video signal conversion device according to the second embodiment. As shown inFIG. 3 , the videosignal conversion device 31 is cooperated with thevideo transmitting device 32 and thevideo receiving device 33. The videosignal conversion device 31 includes afrontend interface 311, aFPGA video processor 312 and abackend circuit 313. Thefrontend interface 311 is electrically connected withvideo transmitting device 32 to receive the video input signal from thevideo transmitting device 32, wherein the video input signal is HDR signal. TheFPGA video processor 312 is electrically connected with thefrontend circuit 311. According to the video input signal, theFPGA video processor 312 outputs the first video output signal V31, wherein, the first video output signal V31 is SDR signal. Thebackend circuit 313 is electrically connected with theFPGA video processor 312 and thevideo receiving device 33, wherein, thebackend circuit 313 includes a video bridge controller, and the video bridge controller is PCI-E BUS. Thevideo receiving device 33 receives the PCI-E BUS first video output signal V31 from theFPGA video processor 312 by the video bridge controller. In other embodiments, theFPGA video processor 312 also may be a SoC video processor. - As mentioned above, according to the HDR video input signal, the
FPGA video processor 312 outputs the SDR first video output signal V31 for follow-up use by thevideo receiving device 33, such as storage, display, or series flow, etc., to more fully apply for supporting HDR. - The
FPGA video processor 312 may selectively output the first video output signal V31 or the second video output signal V32, wherein the second video output signal V32 is HDR signal. In addition, according to the video input signal, theFPGA video processor 312 outputs the HDR second video output signal V32. During actual operation, according to HDR video input signal, theFPGA video processor 312 outputs the HDR second video output signal V32 by pass-through. Of course, according to the HDR video input signal, theFPGA video processor 312 may generate the HDR second video output signal V32 by video operation. These video operations may be, for example, change of resolution/frame rate or other video parameters. Additionally, thebackend circuit 313 may, for example, selectively output the SDR first video output signal V31 or the HDR second video output signal V32 to thevideo receiving device 33. Of course, a buffer may be arranged on thebackend circuit 313. Even if theFPGA video processor 312 selectively outputs the signal V31/V32, by temporary storage in the buffer of thebackend circuit 313, the SDR first video output signal V31 and the HDR second video output signal V32 may be respectively or substantially synchronously outputted to thevideo receiving device 33. - In this embodiment, according to actual requirements, the
frontend circuit 311 may have different design, for example, including a HDMI receiving device and a HDMI shunt. The receiving device and the shunt have been described in the previous embodiment, and not are repeated in this embodiment. - The
video receiving device 33 may enable theFPGA video processor 312 by the video bridge controller of thebackend circuit 313 to convert the HDR video input signal to the SDR first video output signal V31, for example, thevideo receiving device 33 transmits relevant command or information to the video bridge controller of thebackend circuit 313 to control theFPGA video processor 312 for video processing by the video bridge controller of thebackend circuit 313. In addition, thevideo receiving device 33 may enable theFPGA video processor 312 by the video bridge controller of thebackend circuit 313 to selectively output the SDR first video output signal V31 or the HDR second video output signal V32. -
FIG. 4 shows the schematic diagram of the video signal conversion device according to the third embodiment. As shown inFIG. 4 , the videosignal conversion device 41 is cooperated with thevideo transmitting device 42 and thevideo receiving device 43. The videosignal conversion device 41 includes afrontend interface 411, a videoprocessing hardware circuit 412 and abackend interface circuit 413. The frontend circuit is electrically connected withvideo transmitting device 42 to receive the video input signal from thevideo transmitting device 42, wherein the video input signal is HDR signal. The videoprocessing hardware circuit 412 is electrically connected withfrontend circuit 411. According to the video input signal, the videoprocessing hardware circuit 412 outputs the first video output signal V41, wherein, the first video output signal V41 is SDR signal. Thebackend interface circuit 413 is electrically connected respectively with the videoprocessing hardware circuit 412 and thevideo receiving device 43, wherein, thebackend interface circuit 413 includes a USB video bridge controller. Thevideo receiving device 43 receives the first video output signal V41 from thevideo processor 412 by the USB video bridge controller. - Continued above, according to HDR video input signal, the video
processing hardware circuit 412 outputs the SDR first video output signal V31 for follow-up use by thevideo receiving device 43, such as storage, display, or series flow, etc., to more fully apply for supporting HDR. - In the embodiment, the video
processing hardware circuit 412 may selectively outputs the first video output signal V41 or the second video output signal V42, wherein the second video output signal V42 is HDR signal. In addition, according to the video input signal, the videoprocessing hardware circuit 412 outputs the HDR second video output signal V42. During actual operation, according to HDR video input signal, the videoprocessing hardware circuit 412 outputs the HDR second video output signal V42 by pass-through. Of course, according to the HDR video input signal, the videoprocessing hardware circuit 412 may generate the HDR second video output signal V42 by video operation. These video operations may be, for example, change of resolution/frame rate or other video parameters. Additionally, thebackend interface circuit 413 may, for example, selectively output the SDR first video output signal V41 or the HDR second video output signal V42 to thevideo receiving device 43. Of course, the signal may be temporarily stored in a buffer of thebackend interface circuit 413. Even if the videoprocessing hardware circuit 412 selectively outputs the signal V41/V42, by temporary storage in the buffer of thebackend interface circuit 413, the SDR first video output signal V41 and the HDR second video output signal V42 may be respectively or substantially synchronously outputted to thevideo receiving device 43. - According to actual requirements, the frontend circuit 411may have different design, for example, including a HDMI receiving device and a HDMI shunt. The receiving device and the shunt have been described in the previous embodiment, and not are repeated in this embodiment.
- The
video receiving device 43 may enable the videoprocessing hardware circuit 412 by the USB video bridge controller of thebackend interface circuit 413 to convert the HDR video input signal to the SDR first video output signal V41, for example, thevideo receiving device 43 transmits relevant command or information to the video bridge controller of thebackend interface circuit 413 to control the videoprocessing hardware circuit 412 for video processing by the USB video bridge controller of thebackend interface circuit 413. In addition, thevideo receiving device 43 may enable the videoprocessing hardware circuit 412 by the video bridge controller of thebackend interface circuit 413 to selectively output the SDR first video output signal V41 or the HDR second video output signal V42. -
FIG. 5 shows the schematic diagram of the video signal conversion device according to the fourth embodiment. As shown inFIG. 5 , the videosignal conversion device 51 is cooperated with thevideo transmitting device 52 and thevideo receiving device 53. The videosignal conversion device 51 includes afrontend interface 511, avideo processing module 512 and abackend interface 513. Thefrontend interface 511 is coupled with thevideo transmitting device 52 to receive the video input signal from thevideo transmitting device 51, wherein the video input signal is HDR signal. Thevideo processing module 512 is coupled with thefrontend interface 511. According to the video input signal, thevideo processing module 511 outputs the first video output signal V51, wherein, the first video output signal V51 is SDR signal. Thebackend interface 513 is electrically connected respectively with thevideo processing module 512 and thevideo receiving device 53, wherein, thebackend interface 513 includes avideo bridge controller 5131. Thevideo receiving device 53 receives the first video output signal V51 from thevideo processing module 512 by thevideo bridge controller 5131, wherein thevideo bridge controller 5131 is coupled with thefrontend interface 511 to receive the video metadata M10 corresponding to the video input signal from thefrontend interface 511 for use by thevideo receiving device 53. - Continued above, according to HDR video input signal, the
video processing module 512 outputs the SDR first video output signal V51 for follow-up use by thevideo receiving device 53, such as storage, display, or series flow, etc., to more fully apply for supporting HDR. - In this embodiment, the video metadata M10 includes the HDR information on HDR video input signal.
- The
video bridge controller 5131 may be a USB video bridge controller. The USBvideo bridge controller 5131 transmits the video metadata M10 to thevideo receiving device 53 by a universal sequence. In this embodiment, a USB video extension unit (UVC-Extension Unit) or a USB human-interface unit (USB-HID) transmits the video metadata M10 to thevideo receiving device 53. Additionally, according to actual requirement, with USB framework, a channel is designed on thevideo receiving device 53 to transmit the video metadata M10 from thebackend interface 513 to thevideo receiving device 53, without limitation to UVC-Extension Unit or USB-HID. - According to conversion signal, the
video processing module 512 may convert the HDR video input signal to the SDR first video output signal. The conversion information is related with the HDR information of the video metadata. During actual operation, the conversion information may be obtained by the HDR information and the HDR-SDR conversion function. The conversion information may be known by comparison tables or real-time operations. For the above conversion, actually, for example, it may be SDR video information obtained by adjusting the video information video conversion formula of the conversion information. - In this embodiment, the
video processing module 512 may selectively outputs the first video output signal V51 or the second video output signal V52, wherein the second video output signal V52 is HDR signal. Additionally, according to the video input signal, thevideo processing module 512 outputs the second video output signal V52. During actual operation, according to the HDR video input signal, thevideo processing module 512 outputs the HDR second video output signal V52 by pass-through. Of course, according to the HDR video input signal, thevideo processing module 512 may generate the HDR second video output signal V52 by video operation. These video operations may be, for example, change of resolution/frame rate or other video parameters. Thebackend interface 513 may selectively output the SDR first video output signal V51 or the HDR second video output signal V52 to thevideo receiving device 53. Of course, a buffer is arranged on thebackend interface 513. Even if thevideo processing module 512 selectively outputs the signal V51/V52, by temporary storage in the buffer of thebackend interface 513, the SDR first video output signal V51 and the HDR second video output signal V52 may be respectively or substantially synchronously outputted to thevideo receiving device 53. - The
video receiving device 53 may enable thevideo processing module 512 by thevideo bridge controller 5131 of thebackend interface 513 to convert the HDR video input signal to the SDR first video output signal V51, for example, the conversion information may be stored in thevideo bridge controller 5131. When thevideo receiving device 53 transmits relevant command or information to the USBvideo bridge controller 5131 of thebackend interface 513, the USBvideo bridge controller 5131 transmits the conversion information to thevideo processing module 512 so as to control thevideo processing module 512 for corresponding video processing. Additionally, thevideo receiving device 53 may enable thevideo processing module 512 by the USB video bridge controller of thebackend interface 513 to selectively output the SDR first video output signal V51 or the HDR second video output signal V52. - In the embodiment, the
frontend interface 511 may have different design according to actual requirement, for example, including a HDMI receiving device and a HDMI shunt. The receiving device and the shunt have been described in the previous embodiment, and not are repeated in this embodiment. Additionally, thevideo bridge controller 5131 may be coupled with the receiving device of thefrontend interface 511 to receive the video metadata M10 corresponding to the video input signal from the receiving device of thefrontend interface 511. -
FIG. 6 shows the schematic diagram of the video signal conversion device according to the fifth embodiment. As shown inFIG. 6 , the videosignal conversion device 21 is cooperated with thevideo transmitting device 22 and thevideo receiving device 23. The videosignal conversion device 21 includes afrontend interface 211, avideo processing module 212 and abackend interface 213. Thefrontend interface 211 is coupled with thevideo transmitting device 22 to receive the video input signal from thevideo transmitting device 22, wherein the video input signal is a signal with a first frame rate. Thevideo processing module 212 is coupled with thefrontend interface 211. According to the video input signal, thevideo processing module 212 outputs the first video output signal V21, wherein, the first video output signal V21 is a signal with a second frame rate. Thebackend interface 213 is respectively coupled with thevideo processing module 212 and thevideo receiving device 23, wherein, thevideo receiving device 23 receives the first video output signal V21 and the second video output signal V22 from thevideo processing module 212 by thebackend interface 213, wherein the second video output signal V22 is a signal with the first frame rate. - As according to the video input signal, the
video processing module 212 may output the first video output signal V21 with the second frame rate and the second video output signal V22 with the first frame rate for follow-up use by thevideo receiving device 23, the video receiving device is more suitable for the video functions operating simultaneously. In this embodiment, for example, the first video output signal V21 with the second frame rate (e.g. low frame rate) may be used to save bandwidth by series flow, while the second video output signal V22 with the first frame rate (e.g. high frame rate) may be stored for the user to use the high frame rate video. - The first frame rate may be higher than the second frame rate, which is not deemed limited. In this embodiment, the first frame rate is equal to or higher than 60 frames/s (FPS) while the second frame rate equal to or lower than 60 frames/s (FPS).
- According to the video input signal, the
video processing module 212 outputs the second video output signal V22 with the first frame rate. During actual operation, according to the video input signal with the first frame rate, thevideo processing module 212 outputs the second video output signal V22 with the first frame rate by pass-through. Of course, according to the video input signal with the first frame rate, thevideo processing module 212 may generate the second video output signal V22 with the first frame rate by video operation. These video operations may be, for example, change of resolution/frame rate or other video parameters. Additionally, thevideo processing module 212 may, for example, substantially synchronously output the first video output signal V21 with the second frame rate and the second video output signal V22 with the first frame rate. The “substantially synchronously” means smaller time difference within allowable range is deemed as “substantially synchronously”. In another embodiment, thevideo processing module 212 may respectively output the first video output signal V21 with the second frame rate and the second video output signal V22 with the first frame rate. Thebackend interface 213 may respectively or substantially synchronously output the first video output signal V21 with the second frame rate and the second video output signal V22 with the first frame rate to thevideo receiving device 23. - The
video receiving device 23 may enable thevideo processing module 212 by thebackend interface 213 to convert the video input signal with the first frame rate to the first video output signal V21 with the second frame rate, for example, thevideo receiving device 23 transmits relevant command or information to thebackend interface 113 to control thevideo processing module 212 for corresponding video processing by thebackend interface 213. Additionally, thevideo receiving device 23 enables thevideo processing module 212 to substantially synchronously or respectively output the first video output signal V21 with the second frame rate and the second video output signal V22 with the first frame rate by thebackend interface 213. - In summary, according to the technical content of the invention, the video signal conversion device can more fully solve the problems that the backend video receiving end does not support HDR or the backend video receiving end requires SDR.
- Even though numerous characteristics and advantages of certain inventive embodiments have been set out in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only. Changes may be made in detail, especially in matters of arrangement of parts, within the principles of the present disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (8)
1. A video signal conversion device, which is cooperated with a video transmitting device, wherein the video signal conversion device is coupled with the video transmitting device for receiving a video input signal transmitted from the video transmitting device, wherein the video input signal is a signal with a first frame rate, comprising:
a video processing module, which output a first video output signal in accordance with the video input signal with the first frame rate, wherein the video processing module converts the first frame rate to a second frame rate being smaller than the first frame rate, so that the first video output signal is a signal with the second frame rate; and
wherein the video processing module substantially synchronously output the first video output signal with the second frame rate and a second video output signal, wherein the second video output signal is a signal with the first frame rate, wherein the first frame rate is greater than the second frame rate.
2. The video signal conversion device of claim 1 , wherein the video processing module outputs the second video output signal with the first frame rate by pass-through.
3. The video signal conversion device of claim 2 , wherein the video signal conversion device is cooperated with a video receiving device, wherein the video receiving device substantially synchronously receives the first video output signal and the second video output signal outputted by the video processing module of the video signal conversion device.
4. The video signal conversion device of claim 1 , wherein the first video output signal with the second frame rate is to save bandwidth by series flow, while the second video output signal with the first frame rate is stored for the user to use the high frame rate video.
5. The video signal conversion device of claim 1 , wherein the first frame rate is equal to or more than 60 frames/s (FPS), the second frame rate is equal to or less than 60 frames/s (FPS).
6. The video signal conversion device of claim 1 , wherein the video processing module generates the second video output signal with the first frame rate by video operation, where the video operations is change of resolution rate, frame rate or other video parameters.
7. The video signal conversion device of claim 1 , wherein the first video output signal with the second frame rate is SDR signal and the second video output signal with the first frame rate is HDR signal.
8. The video signal conversion device of claim 1 , wherein the video receiving device transmits relevant command or information to the video signal conversion device to control the video processing module for corresponding video processing, where the video processing module converts the video input signal with the first frame rate to the first video output signal with the second frame rate.
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TW201946440A (en) | 2019-12-01 |
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