7 results about "Stream" patented technology

The invention discloses a content copyright protection method based on original video data transformation encryption, and the method specifically comprises the steps: carrying out the encryption of geometric structure transformation of original video data contained in a to-be-played file, and generating geometric transformation encryption algorithm description information embedded in the to-be-played file; obtaining a playing address which is sent by a user and corresponds to the to-be-played file; performing validity verification on a player called by the client through a DRM plug-in, and driving the DRM plug-in to obtain a to-be-played file corresponding to the playing address when the verification is passed; and based on the geometric transformation encryption algorithm description information carried by the to-be-played file, performing geometric structure restoration decryption on the to-be-played file through a geometric transformation decryption plug-in carried by the client, and playing the decrypted to-be-played file on the called player. According to the embodiment of the invention, the original video stream of the to-be-played file is subjected to encryption and decryption processing of geometric structure transformation, so that the security of video file propagation is improved.

The invention provides an information transmission method, which comprises the following steps: setting a QoS (Quality of Service) attribute for a transmission stream, and setting a value of the QoS attribute of the transmission stream as a first QoS attribute value when the transmission stream is generated, the first QoS attribute value being used for identifying a default transmission priority of the transmission stream; negotiating with a receiving end device according to a preset rule, and receiving a first qosupdate message sent by the receiving end device, the first qosupdate message being used for indicating to update the value of the QoS attribute of the transmission stream as a second QoS attribute value; the first QoS attribute value of the transmission stream is changed into the second QoS attribute value according to the first QoS message, and the first QoS attribute value of the transmission stream is changed into the second QoS attribute value according to the second QoS attribute value of the transmission stream; and sending the transmission stream according to the second QoS attribute value.

Systems, methods, and devices enable a receiver device to determine completeness of low level signaling (LLS) tables received via broadcast transmissions. In various embodiments, broadcast service signaling may include generating a directory table identifying one or more LLS tables to be broadcast and sending the directory table in a broadcast stream of the one or more LLS tables. In various embodiments, broadcast service signaling may include calculating a cyclic redundancy check (CRC) code for, generating a hash value for, and/or applying a digital signature to one or more LLS tables in a broadcast stream.

The invention discloses a decoding method and a decoding device. The decoding method comprises the following steps: dividing a deinterleaved code symbol into sub-code symbols of a first preset number of groups; according to the one-to-one correspondence relationship, respectively inputting the sub-encoders of each divided group into each pre-configured decoder; after all decoder outputs are combined according to the sequence of the input decoders, performing cyclic redundancy check on bit streams obtained through combination. According to the embodiment of the invention, the decoding speed is improved.

The invention provides a method and device for preventing program inter-cut, electronic equipment and a storage medium. The method comprises the following steps: playing a received data frame in realtime; performing signature verification on the received data frame; when it is determined that playing of the data frame played at the current moment needs to be stopped according to the signature verification result, stopping playing; through playing the received data frame in real time, stopping playing only when it is determined that playing of the data frame played at the current moment needsto be stopped according to the signature verification result, so as to prevent program inter-cut; or else performing playing normally. Compared with the mode that in the prior art, the code stream isplayed only after signature verification is correct, the method effectively reduces the playing delay.