Unlock instant, AI-driven research and patent intelligence for your innovation.

Hdcp KEY value encoding and decoding method and its device, equipment and storage medium

An encoding method and decoding method technology, applied in the fields of equipment and storage media, HDCPKEY value encoding and decoding methods and their devices, can solve the problems of heavy encoding and decoding workload and long authentication time, so as to improve authentication efficiency and reduce calculation amount , Guarantee the effect of video display quality

Active Publication Date: 2022-08-02
深圳憨厚科技有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a HDCP KEY value encoding method, aiming to solve the technical problems of heavy encoding and decoding workload and long authentication time in the existing HDCP authentication scheme

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hdcp KEY value encoding and decoding method and its device, equipment and storage medium
  • Hdcp KEY value encoding and decoding method and its device, equipment and storage medium
  • Hdcp KEY value encoding and decoding method and its device, equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0032] It will be understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms unless otherwise specified. These terms are only used to distinguish a first element from another element. For example, a first xx script could be referred to as a second xx script, and similarly, a second xx script could be referred to as a first xx script, without departing from the scope of this application.

[0033] figure 1 An application environment diagram of an HDCP KEY value encoding method...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention is applicable to the technical field of information transmission, and provides an HDCP KEY value encoding and decoding method, device, equipment and storage medium thereof. The method includes: determining a scrambling value and a target corresponding to a video frame rate of a current video picture of an HDCP sending end Frame rate weight value; according to the target frame rate weight value, randomly select X bits from the HDCP KEY value as the KEY value to be encoded, where the value of X changes with the change of the target frame rate weight value; according to the scrambling value and the target frame rate The weight value performs a first shift operation on the to-be-coded KEY value to implement the encoding of the to-be-coded KEY value. In this scheme, X bits are randomly selected as the KEY value to be encoded in the HDCP KEY value, and then the selected KEY value to be encoded is encoded through the shift operation, which is equivalent to reducing the HDCP KEY value that needs to be encoded, thereby reducing the number of HDCP KEY values ​​to be encoded. The calculation amount of encoding at the sending end and decoding at the receiving end improves the authentication efficiency of HDCP during video transmission and ensures the quality of video display.

Description

technical field [0001] The invention belongs to the technical field of information transmission, and in particular relates to an HDCP KEY value encoding and decoding method and its device, equipment and storage medium. Background technique [0002] With the development of multimedia technology, HDMI (High-Definition Multimedia Interface) technology has emerged. HDMI is a high-definition digital interface standard, which can provide high bandwidth and transmit digital video and audio signals losslessly. In order to ensure that high-definition signals transmitted by HDMI or DVI will not be illegally recorded, HDCP (High-bandwidth Digital Content Protection, high-bandwidth digital content protection) technology has emerged. When transmitting signals through HDMI, it is necessary to authenticate the HDCP first, and then the signals can be transmitted after the authentication is successful. When the user makes illegal copies, the technology will interfere and reduce the quality o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/4363H04N21/4367H04N21/4627
CPCH04N21/43635H04N21/4367H04N21/4627
Inventor 区小燕张瑞
Owner 深圳憨厚科技有限公司