Generating device and equipment supporting simultaneous output of HDMI and SDI signals

Abstract

The invention relates to a generating device and equipment supporting simultaneous output of HDMI (High Definition Multimedia Interface) and SDI (Serial Digital Interface) signals. The generating device comprises a control module, a screen display module, a time sequence generating module, an audio generating module, an SDI encoding module, an SDI driving module, an HDMI encoding module and an HDMI driving module, main control operation is carried out through the control module; performing display operation through the screen display module; tIMING is generated through a time sequence generation module; sDI and HDMI audios are generated and transmitted through an audio generation module; sDI signals are coded through the SDI coding module and processed through the SDI driving module so as to be output for testing; the HDMI signal is coded through the HDMI coding module and is processed through the HDMI driving module so as to be output and tested; the ultra-high-definition SDI and HDMI simultaneous output can be realized, the output is stable and flexible, the operation is convenient, and the test and production efficiency of ultra-high-definition equipment is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of video equipment testing, and more specifically to a generating device and equipment supporting simultaneous output of HDMI and SDI signals. Background Art

[0002] HDMI is mainly used for transmitting video over short distances between consumer electronics. Through the standardized HDMI interface, audio and video input and output can be easily achieved between devices of different products and brands. The SDI interface is generally used in the radio and television industry. It is a dedicated video transmission interface, mainly used for multi-video transmission such as TV live broadcast equipment, studio equipment, audio and video production equipment, etc. SDI has strong anti-interference and is suitable for long-distance video transmission. With the development of the video industry, users' demand for ultra-high-definition content of video equipment has increased sharply. For manufacturing companies, it is a necessary process to produce and test ultra-high-definition equipment to ensure that the performance of ultra-high-definition equipment can meet users' requirements for ultra-high-definition content. However, the devices currently used to test ultra-high-definition equipment are relatively simple. Most of them can only output SDI signals, or can only output HDMI signals. They cannot meet the requirements of outputting SDI signals and HDMI signals at the same time during testing. The test flexibility is insufficient, which is not conducive to the testing and production of ultra-high-definition equipment, and the application is relatively limited. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a generating device and equipment supporting the simultaneous output of HDMI and SDI signals in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] In one aspect, the present invention provides a generating device supporting simultaneous output of HDMI and SDI signals, the generating device comprising:

[0006] A control module, the control module is used to receive control parameters to perform a main control operation;

[0007] A screen display module, which is used to perform UI operations, point screen display, and display PATTERN selection, picture selection, and video selection according to the control of the control module;

[0008] A timing generation module, wherein the timing generation module is used to generate TIMING according to a built-in reference clock or an external reference signal;

[0009] An audio generation module, the audio generation module is used to generate SDI and HDMI audio, and transmit the SDI and HDMI audio through corresponding channels after adjusting the volume and phase;

[0010] An SDI encoding module, the SDI encoding module is used to receive SDI audio and corresponding PATTERN, picture and / or video, and encode the standard SDI video stream into an SDI signal according to corresponding SDI parameters;

[0011] An SDI driving module, the SDI driving module is used to receive the SDI signal and process it to output a test;

[0012] An HDMI encoding module, the HDMI encoding module is used to receive HDMI audio and corresponding PATTERN, picture and / or video, and encode the standard HDMI video stream into an HDMI signal according to corresponding HDMI parameters;

[0013] The HDMI driver module is used to receive the HDMI signal and process it to output a test.

[0014] In some embodiments, the generating device further includes a SMPTE2110 encoding module, and the SMPTE2110 encoding module is used to package the video stream and the audio stream into a 2110 format and output them according to the UDP protocol.

[0015] In some embodiments, the timing generation module generates TIMING in a FREE RUN or external synchronization manner; the FREE RUN manner is to use its own reference clock to generate the corresponding TIMING; the external synchronization manner is to extract the clock from an external reference signal to generate the corresponding TIMING; the external reference signal is input through an external synchronization module.

[0016] In some embodiments, the PATTERNs for selection are generated by a PATTERN generation module, and the PATTERN generation module generates at least 64 PATTERNs.

[0017] In some embodiments, the method of inputting control parameters to the control module is to transmit the control parameters of the host computer to the control module through the network port, transmit the input control parameters to the control module through the keypad and / or transmit the input control parameters to the control module through the touch screen.

[0018] In some embodiments, the images and videos are imported via a USB interface module or a host computer via a network port.

[0019] In some embodiments, the waveforms of the SDI and HDMI audio are both sine waves, and the frequency range of the sine waves is 20 Hz to 20 kHz.

[0020] In some embodiments, the SDI and HDMI signals are processed by retiming, pre-emphasis, and amplitude adjustment to change the signal resolution and frame rate of the SDI and HDMI signal outputs.

[0021] In some embodiments, the output mode of the generating device includes 4-way SDI outputs and 2-way HDMI outputs; the 4-way SDI outputs include 2-way 12G SDI outputs and 2-way 3G SDI outputs.

[0022] On the other hand, the present invention further provides a device, comprising any one of the above-mentioned generating devices supporting the simultaneous output of HDMI and SDI signals.

[0023] The beneficial effects of the present invention are as follows: different from the prior art, the generating device of the present invention supporting the simultaneous output of HDMI and SDI signals performs main control operation through a control module; performs display operation through a screen display module; generates TIMING through a timing generation module; generates and transmits SDI and HDMI audio through an audio generation module; encodes SDI signals through an SDI encoding module and processes them through an SDI driving module for output testing; and encodes HDMI signals through an HDMI encoding module and processes them through an HDMI driving module for output testing; can realize simultaneous output of ultra-high-definition SDI and HDMI, with stable and flexible output, and can also change the output signal resolution and frame rate to realize the conversion from standard definition to ultra-high definition resolution, and is easy to operate, which is helpful for the testing and production of ultra-high-definition equipment and effectively improves the testing and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a system block diagram of a generating device supporting simultaneous output of HDMI and SDI signals in an embodiment of the present invention;

[0025] Figure 2 is a circuit structure diagram of an HDMI output circuit in an embodiment of the present invention;

[0026] Figure 3 is a circuit structure diagram of a 3G SDI output circuit in an embodiment of the present invention;

[0027] Figure 4 is a circuit structure diagram of a screen interface circuit in an embodiment of the present invention;

[0028] The names and serial numbers in the figure are: control module-1; screen display module-2; timing generation module-3; audio generation module-4; SDI encoding module-5; SDI driving module-6; HDMI encoding module-7; HDMI driving module-8; external synchronization module-9; SMPTE2110 encoding module-10. DETAILED DESCRIPTION

[0029] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0032] Moreover, the terms "up, down, front, back, left, right, upper end, lower end" etc. indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0034] Embodiment 1: Embodiment of the present invention Figure 1As shown in, a generating device supporting the simultaneous output of HDMI and SDI signals includes: a control module 1, the control module 1 is used to receive control parameters for main control operation; a screen display module 2, the screen display module 2 is used to perform UI operation, point screen display, and display PATTERN selection, picture selection and video selection according to the control of the control module 1; a timing generation module 3, the timing generation module 3 is used to generate TIMING according to a built-in reference clock or an external reference signal; an audio generation module 4, the audio generation module 4 is used to generate SDI and HDMI audio, and transmit the SDI and HDMI audio through corresponding channels after adjusting the volume and phase; an SDI encoding module 5, S The DI encoding module 5 is used to receive SDI audio and corresponding PATTERN, pictures and / or videos, and encode the standard SDI video stream into an SDI signal according to the corresponding SDI parameters; the SDI driving module 6 is used to receive the SDI signal and process it for output testing; the HDMI encoding module 7 is used to receive HDMI audio and corresponding PATTERN, pictures and / or videos, and encode the standard HDMI video stream into an HDMI signal according to the corresponding HDMI parameters; the HDMI driving module 8 is used to receive the HDMI signal and process it for output testing.

[0035] In this embodiment, the generating device further includes a SMPTE2110 encoding module 10, which is used to package the video stream and the audio stream into a 2110 format and output them according to the UDP protocol, thereby providing a SMPTE2110 output function.

[0036] In this embodiment, the control parameters are input to the control module 1 by transmitting the control parameters of the host computer to the control module 1 through the network port, transmitting the input control parameters to the control module 1 through the keypad, and / or transmitting the input control parameters to the control module 1 through the touch screen. Specifically, the control module 1, as the main control, can receive the control parameters of the host computer through the network port, can also operate and control the relevant modules through the information transmitted on the keypad, and can also operate and control the relevant modules through the touch screen. Among them, the method of operating and controlling through the touch screen can be realized by configuring a corresponding touch screen, such as configuring a 7-inch touch screen for the device, and realizing the operation and the current output PATTERN, TIMING and other states through the 7-inch touch screen.

[0037] In this embodiment, the selectable PATTERN is generated by a PATTERN generation module, and the PATTERN generation module generates at least 64 PATTERNs, including but not limited to COLORBAR 100%, COLORBAR 75%, SMPTE COLORBAR, and SDI pathological diagram.

[0038] In this embodiment, pictures and videos are imported from the outside, and the specific import method is to import them through a USB interface module or a host computer via a network port.

[0039] In this embodiment, the follow-up configuration is implemented by the timing generation module 3, and the timing generation module 3 generates TIMING in a FREE RUN or external synchronization manner. Specifically, the FREE RUN mode uses its own reference clock to generate the corresponding TIMING, such as 3840x2160 P60. The external synchronization mode uses an external reference signal, such as an analog input black field signal (BLACK BURST); when the external synchronization mode is used, the clock used by the system is extracted from the external reference signal to generate the corresponding TIMING. The external reference signal is generated and input by the external synchronization module 9.

[0040] In this embodiment, when the audio generation module 4 generates SDI and HDMI audio, a sine wave can be generated with a frequency range of 20HZ to 20KHZ. At the same time, the volume and phase can be adjusted. SDI can be set to 16 channels and HDMI can be set to 8 channels. The generated PATTERN, picture or video and the audio signal are sent to the SDI encoding module 5 and the HDMI encoding module 7. The standard video stream is packaged into SDI and HDMI signals according to the corresponding parameters. The encoded SDI and HDMI signals are sent through the SDI driver module 6 and the HDMI driver module 8. The SDI driver module 6 and the HDMI driver module 8 are used to retime, pre-emphasize, adjust the amplitude and other processing of the corresponding signals and output them to achieve the test purpose, which can ensure the integrity of the output signal.

[0041] Embodiment 2: The embodiment of the present invention further provides a device, which includes the generating device supporting the simultaneous output of HDMI and SDI signals provided in Embodiment 1. The generating device supporting the simultaneous output of HDMI and SDI signals can realize 4-way SDI output and 2-way HDMI output; the 4-way SDI output includes 2-way 12G SDI output and 2-way 3G SDI output.

[0042] For example, the circuit structure of the HDMI output circuit required for application is as shown in the attached figure. Figure 2 The circuit structure of the 3GSDI output circuit required for application is shown in the attached Figure 3 The circuit structure of the screen interface circuit required for application is shown in the attached Figure 4 It should be noted that the circuit structures shown in the drawings are only examples, which should be based on actual applications and do not constitute specific limitations; other circuit structure diagrams not shown can be designed and selected according to actual application requirements and with reference to any existing suitable circuit layout.

[0043] SDI output supports SD, HD, 3G LEVELA, 3G LEVLB, 6G, 12G, QUADLINK 3G, DUALLINK 3G, etc. It can realize simultaneous output of ultra-high-definition SDI and HDMI, and can also change the output signal resolution and frame rate to achieve the conversion from standard definition to ultra-high-definition resolution. The output is flexible, and the output image can choose PATTERN, picture, and video output. The output audio can be generated internally or the video source sound can be selected. The highest resolution supports 4K 60P, which is helpful for the testing and production of ultra-high-definition equipment and effectively improves the testing and production efficiency.

[0044] It should be understood that, for ordinary technical workers in the field, improvements or changes can be made based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A device for simultaneously outputting HDMI and SDI signals, characterized in that: The generating device comprises: A control module, the control module is used to receive control parameters to perform a main control operation; A screen display module, which is used to perform UI operations, point screen display, and display PATTERN selection, picture selection, and video selection according to the control of the control module; A timing generation module, wherein the timing generation module is used to generate TIMING according to a built-in reference clock or an external reference signal; An audio generation module, the audio generation module is used to generate SDI and HDMI audio, and transmit the SDI and HDMI audio through corresponding channels after adjusting the volume and phase; An SDI encoding module, the SDI encoding module is used to receive SDI audio and corresponding PATTERN, picture and / or video, and encode the standard SDI video stream into an SDI signal according to corresponding SDI parameters; An SDI driving module, the SDI driving module is used to receive the SDI signal and process it to output a test; An HDMI encoding module, the HDMI encoding module is used to receive HDMI audio and corresponding PATTERN, picture and / or video, and encode the standard HDMI video stream into an HDMI signal according to corresponding HDMI parameters; The HDMI driver module is used to receive the HDMI signal and process it to output a test.

2. The device for supporting simultaneous output of HDMI and SDI signals according to claim 1, characterized in that: The generating device also includes a SMPTE2110 encoding module, which is used to package the video stream and the audio stream into a 2110 format and output them according to the UDP protocol.

3. The device for supporting simultaneous output of HDMI and SDI signals according to claim 2, characterized in that: The timing generation module generates TIMING in a FREE RUN or external synchronization manner; the FREE RUN manner uses its own reference clock to generate the corresponding TIMING; the external synchronization manner extracts the clock from an external reference signal to generate the corresponding TIMING; the external reference signal is input through an external synchronization module.

4. The device for supporting simultaneous output of HDMI and SDI signals according to claim 1, characterized in that: The PATTERNs for selection are generated by a PATTERN generation module, and the PATTERN generation module generates at least 64 PATTERNs.

5. The device for supporting simultaneous output of HDMI and SDI signals according to claim 1, characterized in that: The control parameters are input to the control module by transmitting the control parameters of the host computer to the control module through the network port, transmitting the input control parameters to the control module through the keypad and / or transmitting the input control parameters to the control module through the touch screen.

6. The device for supporting simultaneous output of HDMI and SDI signals according to claim 1, characterized in that: The images and videos are imported via a USB interface module or a host computer via a network port.

7. The device for supporting simultaneous output of HDMI and SDI signals according to claim 1, characterized in that: The waveforms of the SDI and HDMI audio are both sine waves, and the frequency range of the sine waves is 20HZ to 20KHZ.

8. The device for supporting simultaneous output of HDMI and SDI signals according to claim 1, characterized in that: The SDI and HDMI signals are processed by means of retiming, pre-emphasis, and amplitude adjustment to change the signal resolution and frame rate of the SDI and HDMI signal outputs.

9. The device for supporting simultaneous output of HDMI and SDI signals according to claim 1, characterized in that: The output mode of the generating device includes 4-way SDI output and 2-way HDMI output; the 4-way SDI output includes 2-way 12G SDI output and 2-way 3G SDI output.

10. A device, characterized in that: The device comprises the generating apparatus supporting the simultaneous output of HDMI and SDI signals as described in any one of claims 1-9.

Images