摘要:
An apparatus may include circuitry, a cryptographic module, and a key store. The circuitry may hold a private key associated with first media information. The cryptographic module may operate on the private key to generate a number of first control keys for decrypting the first media information. The key store may hold the number of first control keys from the cryptographic module. In some implementations, the key store may include sufficient storage to store more than one control key from each of a number of different crypto modules. In some implementations, the key store may receive multiple control keys simultaneously or nearly so. In some implementations, the key store may output multiple control keys simultaneously, or nearly so, for decrypting multiple streams of media information at the same time.
摘要:
In one embodiment, the present invention includes a method of validating secure code using a first processor, loading configuration data into at least one configuration register of a conditional access unit if the secure code is validated, and preventing access to the configuration register(s) during normal operation. In such manner, encrypted content to be processed by the conditional access unit may be protected from unauthorized access. Other embodiments are described and claimed.
摘要:
One embodiment includes a method that includes receiving a compressed video stream. The method also includes decoding a number of blocks of the compressed video stream to output a number of blocks of decoded video data. The decoding is based on at least one motion compensation vector. The method also includes deinterlacing the number of blocks of the decoded video data to output deinterlaced video data. The deinterlacing of one of the blocks of the number of blocks is based on the at least one motion compensation vector if a prediction error energy for the at least one motion compensation vector for the block is less than a threshold.
摘要:
A method may include sampling a receive frequency at which information received over a communication link is played. The method may also include sampling a system frequency related to the communication link and computing a first value based on the sampled receive frequency and the sampled system frequency. A second value may be received via the communication link. The receive frequency may be adjusted based on the first value and the second value.
摘要:
Efficient architecture for a secure access enforcement proxy is described. The proxy interfaces with multiple subsystems and multiple shared resources. The proxy identifies an original transaction command being sent from one of the subsystems to one of the shared resources, identifies a policy corresponding to the subsystem, performs an action pertaining to the original transaction command based on the policy, and sends a response to the subsystem based on the action.
摘要:
A device including a two-dimensional convolution unit to perform spatial image filtering. A reference frame mirroring unit is connected to the two-dimensional convolution unit. A mean square error (MSE) decision unit is connected to the two-dimensional convolution unit to perform motion estimation by selecting the displacement that minimizes MSE.
摘要:
Apparatus, systems and methods for protection of independent vendor encryption keys with a common primary encryption key are disclosed including an apparatus including memory to store a plurality of encrypted vendor keys, memory to store a primary key; and cipher logic to use the primary key to decrypt an encrypted vendor key of the plurality of encrypted vendor keys to provide an effective key. Other implementations are disclosed.
摘要:
According to some embodiments, image information, including rows of pixels, may be determined. The image information may be associated with a plurality of image blocks, each image block including a subset of pixels from multiple rows. Moreover, a single row of pixels of the image information may span multiple image blocks. A first subset of pixels (from a first row of a first image block) may be stored into a memory unit. A second subset of pixels (from a second row of the first image block) may then be stored into the memory unit such that a first pixel of the second subset is stored proximate to a last pixel of the first subset.
摘要:
A method includes loading video data into packets and appending headers to the packets. Each of the headers includes a first field and a second field. The first field includes a data value to indicate an importance of a respective packet relative to other packets. The second field includes an importance level sequence number to indicate a position of the respective packet in a sequence of packets which have the same importance level as the respective packet.
摘要:
Locations of reference blocks of pixels of decoded interlaced video reference fields decoded from a compressed stream of video data are computed using motion vectors decoded from the same stream of video data. The reference block computed locations are de-interlaced with current blocks from current video fields decoded from the compressed streams of video data by low pass filtering light intensities of adjacent pixels of the reference and current blocks using low pass filter with coefficients adjustable according to discrete cosine transform (DCT) high frequency coefficients decoded from the coded stream. In addition, moving edges or objects of the de-interlaced blocks of pixels can be identified by comparing the decoded motion vector of the reference blocks to a threshold value. Then proper or more appealing light intensities for the moving edge pixels can be interpolated.