8 results about "Digital video interface" patented technology

The application discloses a HDMI signal receiving method of self-adaptive sampling window and indirect line field recovery, and relates to the technical field of digital video interface. The method performs sampling alignment processing based on an IDELAY delay unit and an ISERDES serial-parallel conversion unit in an FPGA chip, detects continuous control characters to demarcate an effective sampling window and lock the midpoint as a sampling point, and completes bit alignment and word alignment through automatic traversal of delay gears and bit sequence adjustment. Then, for three-way data of completed channel synchronization, a stable data valid signal de is generated by judging non-control characters for M clock periods, and a line field synchronization signal is indirectly calculated based on the de signal and standard timing parameters. The application does not need an external physical layer decoding chip, has low cost, can adaptively offset the phase, effectively filters signal burrs, and improves the anti-interference ability of line field synchronization.

This disclosure provides a method, apparatus, device, and medium for verifying digital content playback devices. The specific implementation scheme is as follows: In response to determining that the operating system's kernel layer has started, a driver for managing digital video interfaces of the operating system is loaded to call the kernel layer to generate a target node; In response to the operating system's application layer starting, first pre-stored data is obtained from the disk of the digital content playback device through the application layer, and the first pre-stored data is transmitted to the driver via the target node; wherein, the first pre-stored data is used to obtain at least a portion of the verification key data corresponding to the digital content playback device, and the verification key data is used for digital content protection verification; Based on the first pre-stored data transmitted to the driver, data is stored in memory space by the driver; In response to receiving a verification request from a digital content source device, the verification key data is determined based on the data stored in memory space to perform digital content protection verification on the digital content playback device.

The utility model relates to a security inspection equipment image data acquisition system and an image data acquisition device thereof. The device comprises a protocol conversion module which can be connected with security inspection equipment so as to convert a video communication protocol of image data and transmit the image data through a first communication protocol; wherein the video communication protocol comprises at least one of a VGA (Video Graphics Array) communication protocol, an HDMI (High-Definition Multimedia Interface) communication protocol and a DVI (Digital Video Interface) communication protocol; the control module is connected with the protocol conversion module so as to receive the converted image data; and the Ethernet communication module is connected with the control module so as to transmit the image data to the Ethernet. According to the utility model, on the basis that old security inspection equipment is not replaced, the image data of the security inspection equipment is acquired through the image data acquisition device, and the image data is sent to the Ethernet, so that the summarizing and collecting efficiency of the image data can be effectively improved, and the transformation cost is saved.

The utility model discloses a Type-C connector for high-definition video equipment. The Type-C connector comprises a Type-C interface, a connecting lead, an HDMI (High-Definition Multimedia Interface), a connecting swing arm and a DVI (Digital Video Interface), the Type-C interface is connected with the HDMI interface through a connecting wire, a terminal wiring of the DVI interface penetrates through the hollow shaft and is connected with the connecting wire, and the Type-C interface comprises a Type-C adapter, a magnetic attraction seat and a circuit board. According to the utility model, the Type-C interface can be connected with video input terminal equipment, the connector is provided with the HDMI interface and the DVI interface at the same time, a user can select a proper interface for connection according to requirements, multiple purposes of one line are realized, and the compatibility is good; besides, the Type-C adapter is connected with the magnetic attraction seat in a magnetic attraction manner, so that when the Type-C adapter is damaged, the Type-C adapter can be directly replaced, the whole connector does not need to be replaced, and the cost is saved.

The utility model relates to the technical field of LED screens, and discloses an LED screen controller with a jack protection function, which comprises a machine body, a jack, a digital video interface (DVI) wire port and a network cable port, the surface of the jack is provided with a dust blocking plate assembly, the surface of the DVI wire port is provided with a magnetic sticking assembly, and the surface of the network cable port is provided with a power supply. The magnetic attraction pasting assembly is connected with the surface of one side of the machine body in an attached mode, and a rubber blocking block is arranged in the network cable port and connected with the network cable port in an inserted mode. According to the LED screen controller, the interface of the LED screen controller has the dustproof protection function, dust and dirt can be effectively prevented from entering the interface through dustproof protection, abrasion and corrosion of interface pins and metal contact surfaces are reduced, the good working state of the interface can be kept, and therefore the service life of the interface is prolonged; the signal transmission quality is improved, the image is clearer, the color is more accurate, and the display effect of the LED display screen is improved; maintenance and replacement times are reduced, maintenance cost is reduced, and reliability of the system is improved.

This disclosure provides a method, apparatus, device, and medium for verifying a digital content playback device. The specific implementation scheme is as follows: During the operating system startup process of the digital content playback device, first pre-stored data obtained from the disk of the digital content playback device is stored in a target space of the internal memory; wherein, the first pre-stored data is used to obtain at least a portion of the verification key data corresponding to the digital content playback device, and the verification key data is used for digital content protection verification; the operating system's driver for managing the digital video interface is loaded to obtain the first pre-stored data from the target space; based on the obtained first pre-stored data, the verification key data is determined; in response to receiving a verification request from a digital content source device, digital content protection verification is performed on the digital content playback device based on the verification key data.

The invention provides an anti-mouse overflow multi-screen extended display method based on HPD (Hot Plug Detection) detection, which comprises the following steps of: manually pulling down an HPD pin by utilizing a Hot Plug Detection (HPD) function in a DVI (Digital Video Interface) transmission protocol, so that a seat computer cannot detect an external display, and actively closing a DVI channel; when the display is switched to the channel, the HPD pin is released, the seat computer detects that the display is mounted again, and extended display is automatically completed; according to the method and the device, mouse overflow in a complex display scene can be prevented.