Abstract: A method for sharing at least one annotation between a first user media terminal (102) and a second user media terminal (104) in a communication network (100) is provided. The method includes inputting (404) the at least one annotation on the first user media terminal. Further, the method includes anchoring (406) the at least one annotation to the media stream executed on the first user media terminal at a first start time. The at least one annotation is sent (408) to the second user media terminal. The at least one annotation is received (410) at the second user media terminal. Furthermore, the at least one annotation is synchronized (412) at the second user media terminal based on a relative start time. The at least one synchronized annotation is then rendered (414) to the media stream on the second user media terminal.

Abstract: A method is provided for enhancing security of a communication session between first and second endpoints which employs a key management protocol. The method includes sending a first message to a first end point over a communications network requesting a secure communication session therewith. The message includes an identity of a second end point requesting the authenticated communication session. A digital certificate is received from the first endpoint over the communications network. The digital certificate is issued by a certifying source verifying information contained in the digital certificate. The digital certificate includes a plurality of fields, one or more of which are transformed in accordance with a transformation algorithm. A reverse transform is applied to the one or more transformed fields to obtain the one or more fields. The digital certificate is validated and a second message is sent to the first endpoint indicating that validation is complete.

Abstract: In a method for communicating media content stored on a digital video recorder (DVR) protected by a first DRM system to a portable multimedia device (PMD) using a second DRM system, in which the first DRM system differs from the second DRM system, a request for communication of a media content item stored on the DVR to the PMD is received. In addition, a portable content key is employed to encrypt the media content item to a PMD format suitable content version and the encrypted PMD format suitable content version is communicated to the PMD along with a portable content identifier (ID).

Abstract: A frequency multiplier device including a plurality of multipliers, each of which has a first input port, a second input port and an output port; a first combiner coupled to the plurality of multipliers so as to receive an output signal from at least two of the plurality of multipliers, the first combiner outputting a first output signal; and a second combiner coupled to the plurality of multipliers so as to receive an output signal from at least two of the plurality of multipliers, the second combiner outputting a second output signal.

Abstract: Particular embodiments provide interaction between items in a network. For example, lists of content may be shared between items connected through a network. A user may use a first item to select a second item in which content should be outputted. Instead of sending the content to the second item, the first item may generate and send a list of content to the second item instead of the content. A messaging infrastructure is used to allow the items to communicate the list of content between each other. The second item can then process the list and then determine how to access the item. This allows two different items to share content without the transfer of content between them. In another example, an item may be used to interact with a user interface of a second item. For example, an input device on a first item is used to provide input to a second item.

Abstract: Horizontal and vertical video shape padding (with or without attendant motion compensation) are facilitated through use of a two-dimensional small array of processing elements. Multiple pixel value assignments are determined and made with each clock cycle or iteration, thereby greatly reducing overall cycle time to complete the shape padding. This approach is compatible with MPEG 4.

Abstract: Primary presentation stream is received and presented to user. Alternate presentation stream received according to channel prediction stands ready for presentation if user selects channel processed as alternate stream. Prediction is made according to pre-indication of channel selection or time-selected usage history.

Abstract: A method, device and system for controlling JTAG interface enablement within a communication device. The JTAG interface can be selectively enabled based on the receipt of an encrypted access token generated by an access token server. The access token server generates the access token in response to an end user providing appropriate device-specific information. The access token includes appropriate information that, upon appropriate authentication and decryption, can temporarily device bind the boot code image of the device in a manner that enables the JTAG interface. Alternatively, the access token includes appropriate information that instructs the general purpose processor to choose between JTAG interface enablement information and JTAG interface disablement information for use with the boot code image of the device. The access token can include expiration information that causes an enabled JTAG interface to revert back to its disabled status upon expiration of the access token.

Abstract: A device configured to communicate with a second device may register a second device using one of multiple registration modes including a domain-registration mode, a device-registration mode, and a no-registration mode. The domain-registration mode allows the second device to register with the device and at least one other device registered with the device, the device-registration mode allows the second device to register with the device and with no other devices, and the no-registration mode does not allow any device to register with the device. The device receives a selection of one of the multiple registration modes and places the device in the selected registration mode.

Abstract: The present invention is a system and method for restructuring a group of pictures in such a manner as to provide for random access into the group of pictures without substantially degrading the quality of service for the video content. When encoding a current picture, if the current picture is an I picture, the current picture is encoded utilizing intra coding. If the current picture is not an I picture, and is not referenced by future pictures, the current picture is compressed using an arbitrary number of pictures in the past as a reference. If the current picture is not an I picture, and the current picture is not referenced by future pictures, the picture is compressed and the number of reference pictures in the past are limited so that picture prior to the last I picture are not used as a reference. This process continues until the conclusion of the group of pictures.

Abstract: A system to transmit a set of programs from a transmitter to a receiver is used to accommodate different levels of security used for each program. When a high level of security is necessary for transmitting or receiving a program the transmitter and/or receiver is operable to accommodate that level of security. Thus, both transmitters and receivers are operable to be reconfigured to encrypt or decrypt, respectively, at different levels. Accordingly, differing amounts of programs can be transmitted or received based on the resource requirements needed at any level of security. Consequently, a high level of encryption/decryption requires more resources and allows the processing of fewer services, while a lower level of encryption/decryption allows more services to be transmitted/received.