Abstract: Converting a DS3 transport stream to MPEG-2 packets over an ASI transport stream includes extracting MPEG-2 packets along with PCR values, calculating a new PCR value to compensate for packet time shift, and replacing the extracted PCR value with the new PCR value prior to outputting MPEG-2 packets. An apparatus for processing a DS3 transport stream carrying an MPEG-2 payload includes a DS3 receiver to receive the stream and to output a data signal and clock signal. The DS3 receiver includes a DS3 interface to receive DS3 packets and discard null packets, and includes PCR correction to determine if received DS3 packets include PCR values and to adjust PCR values prior to outputting the MPEG-2 packet. Packets are output without storing each packet in a buffer, but storing the PCR value in the buffer.

Abstract: Application servers are programmed such that when an application server changes a compromised service key, the compromised key is saved by the application server until all tickets that may have been issued under the compromised key expire. Whenever the application server receives a ticket from a client issued under the compromised key, it generates an authenticator for an error message using the session key extracted from the ticket and sends the error message with this authenticator to the client. Clients are programmed to be able to receive error messages from application servers that have changed their service keys. Because the error messages include an authenticator generated by the application server using the session key extracted from the compromised ticket, the client is able to rely on the error message. The client is able to automatically request a new ticket from a key distribution center in response to a successful authentication of the error message.

Abstract: A system and method for efficiently adding a new network resource to a digital video network, without the need to purchase costly ancillary network hardware or extensive manual configuration, is disclosed. The inventive system and method provide for a loop-through for adding new resources to a digital video network. The present invention provides for the resources to be daisy chained from the network switch, where each resource is configured simply as either a loop-through (“LT”) resource or the “last” resource in the daisy chain. Then, only upstream traffic with Media Access Control (“MAC”) addresses of upstream LT resources are transmitted out of the loop-through by the last network resource.

Abstract: Transcoder multiplexers that transport digital packets, such as MPEG2 packets, between boards in a chassis using a serial differential protocol are disclosed. The disclosed multiplexers achieve data transfer rates at least twice as fast as conventional systems. Digital data packets are thereby efficiently communicated to target processing engines on other boards across the backplane. Prior art requirements for custom backplane designs, together with discrete hardware for sending data in parallel form between boards, are obviated. Instead, a backplane architecture designed specifically for IP data traffic from any slot to any slot is utilized. Also, an improved protocol is applied for transmitting data serially between boards to provide an inexpensive, upgradeable and flexible hardware solution. Preferred embodiments use LVDS transmitter/receiver pairs with high link speeds.

Abstract: A system and method for managing content between different client devices in various domains (such as vehicle, home, and person). The system and method include receiving an input from a user on the first client device to pause the content. After receiving the input, the first client device determines whether the first client device is connected to a wireless communication system. If the first client device is connected to the wireless communication system, the first client device sends a data message to the second client device through a host system. In one embodiment, the second client device will then store the content in the second client device after receiving the data message to permit the user to resume playback of the content on the second client device. In another embodiment, the host system will store the content itself or access the content from a content provider and transfer the content directly to the second device with a data message that indicates the paused location of the content.

Abstract: A conditional access subsystem is proved which is to reside with an end-user for receiving, decrypting and decoding all programs distributed by a content provider that the end user is entitled to access so that the decrypted and decoded programs are available for display on one or more display devices without use of a set-top terminal dedicated to each of the display devices. The subsystem includes a receiver for receiving and demodulating a multi-program transport (MPTS) stream distributed by the content provider. The MPTS includes a plurality of packets constituting a plurality of programs using one of N different encryption schemes each associated with one of N service tiers, wherein N is an integer greater than one. Each of the N different encryption schemes has a different encryption/decryption key associated therewith. The packet identifiers for the packets associated with programs in any given one of the service tiers are in a consecutive sequence.

Abstract: A method and system for generating an electronic key used in an electronic transaction can be created by executing a one-way function on a host that derives the electronic key from a key seed saved in a non-volatile storage unit of the host and a unique host identification that is resident on the host. The function is preferably executed each time an electronic transaction requiring the use of the electronic key is made.