A method of transmitting entitlement messages to content consumption devices in a access control system, the method comprising periodically transmitting entitlement messages to content consumption devices in a access control system and periodically extending an expiry time comprised in the entitlement messages. The entitlement messages comprise indicator data indicating to the content consumption devices that subsequent entitlement messages loaded into a content consumption device after a first entitlement message is loaded into the content consumption device shall not be used by the content consumption device to access protected media content.

A content rental system includes one data store for storing rental content. The content rental system also includes a content server for transferring content to one viewing device based upon a received request. The content server is further configured to authorize the transfer of the content from the viewing device to another viewing device.

Methods and systems for providing content. A selection of a single virtual channel may be received from the user. Virtual programming data for the single virtual channel may be accessed. The virtual programming data may define content to be provided over the single virtual channel. The content may be provided over the single virtual channel in accordance with the virtual programming data.

The present disclosure relates to an electronic apparatus. The electronic apparatus includes a signal receiving unit that may receive a video signal; an interface unit that may communicates with a security processing module; a signal processing unit; and a processor that transmits first data of the video signal received by the signal receiving unit to the security processing module through the interface unit and receives secured second data from the security processing module, controls the signal processing unit to process the received second data for displaying a video, identifies whether continuity of processing of second data by the signal processing unit is limited based on a ratio of a transmission amount of the first data and a transmission amount of the second data transmitted and received between the interface unit and the security processing module, and performs subsequent processing according to the identification.

A system for inferring features in a digital image includes a vision sensor for capturing and optically encrypting an image of a visual scene so as to shroud any human-perceivable features contained therein. An image interpreter in communication with the vision sensor is programmed to recognize and classify features in the encrypted image without prior decryption, thereby ensuring the privacy of any subjects depicted therein. The vision sensor is encoded with a calibration key that applies a unique transformation function to optically encrypt the captured image. The image interpreter is permitted access to the calibration key and applies a convolutional network constructed using the calibration key, a source convolutional network, and a set of private layer keys in order to infer features in the encrypted image without prior decryption. For applications requiring enhanced privacy protection, the inference output produced by the image interpreter remains encrypted but available for further feature detection.

Methods and systems for providing content. A selection of a single virtual channel may be received from the user. Virtual programming data for the single virtual channel may be accessed. The virtual programming data may define content to be provided over the single virtual channel. The content may be provided over the single virtual channel in accordance with the virtual programming data.

An encrypting and decrypting method applied to a system including at least one camera device and a hard disk video decoder includes: transmitting a handshake signal to the camera device which supports an encryption function and has selected the encryption function, wherein the handshake signal includes first identifier information uniquely corresponding to a chip of the hard disk video recorder; receiving the handshake signal; generating a key according to the first identifier information of the hard disk video recorder in the handshake signal and second identifier information uniquely corresponding to a chip of the camera device; encrypting an audio/video file recorded by the camera device according to the key to generate an encrypted audio/video file bitstream; and receiving and decrypting the encrypted audio/video file bitstream.

The present disclosure discloses a video encryption method comprising: acquiring image frames continuously by using an image acquisition component, and storing the image frames into a frame buffer; acquiring a time encryption sequence, and using the time encryption sequence to obtain an address encryption sequence; and reading each of the image frames in the frame buffer according to the address encryption sequence to obtain an encrypted video when the frame buffer is full. The method continuously acquires the image frames and uses the time encryption sequence to obtain the address encryption sequence, and when the frame buffer is full, each of the image frames in the frame buffer is read according to the address encryption sequence to obtain an encrypted video. In addition, the present disclosure also provides a video encryption apparatus, an image capture device, and a computer readable storage medium, which also have the above-mentioned beneficial effects.

Methods and apparatus for dynamically adjusting capacity allocation; e.g., to a group of services in a multimedia distribution network. In one embodiment, bandwidth allocation is adjusted by predicting bandwidth utilization of the group of services based on historical bandwidth utilization information. Behavioral templates and statistical models may also be employed for the predictions. The invention provides more efficient use of available bandwidth compared to conventional bandwidth allocation schemes where the overall bandwidth for a group of services is set to a constant value that is not changed frequently. The present invention further provides a bandwidth allocation method in a switched distribution network. The bandwidth allocation method allocates bandwidth such that the bandwidth required by the number of services does not exceed the allocation, i.e., the total usage falls within the allocation.

A method, performed by an image processing device, of encrypting image data includes: selecting an encryption target unit from among a plurality units constituting an image; generating a table including identification information about the encryption target unit; generating a first encryption unit including data obtained by encrypting the encryption target unit; generating a second encryption unit including data obtained by encrypting the table; and generating a bitstream including the first encryption unit, the second encryption unit, and units other than the encryption target unit among the plurality of units constituting the image.