Abstract: A system and method for identifying a piece of content is disclosed. In one embodiment, an identifier for a piece of digital content can be generated using the title of the piece of digital content, the size of the piece of digital content, and a hash of other attributes of the piece of digital content such as title, album, and artist names.

Abstract: A method and apparatus for improved digital rights management is provided.

Abstract: A mobile device updating method and system for live data.

Abstract: A system and method for secure content delivery is provided. The system and method has a content system that verifies a device with a media player based on one or more properties of the device with the media player wherein the content system delivers content to the device with the media player only when the device with the media player is verified.

Abstract: A method and apparatus for providing audio or video content to a mobile handset is provided.

Abstract: A method and apparatus for improved digital rights management is provided.

Abstract: A system and method using a medium access control (MAC) header for a wireless communication system including an application layer, a MAC layer, and a physical (PHY) layer is disclosed. The MAC header accommodates time-delay insensitive data transfer between devices located in the network. The MAC header finds particular benefits in short range networks that transfer high definition (HD) video between components. One embodiment of the invention comprises a method of transferring data in a wireless communication network for uncompressed video including fragmenting the data into a plurality of data packets; appending a PHY header to at least one of the data packets to form a MAC frame; setting a field in the PHY header to indicate that the packets do not contain audio video (A/V) data; and transmitting the MAC frame to another device in the wireless communication network.

Abstract: A method of efficient scheduling for portable devices communicating with a coordinator over a network is disclosed. The method includes: listening for beacons broadcasted by a coordinator; assigning, by the coordinator, a single contiguous time block (CTB) for portable devices during a superframe defined by consecutive beacons; scheduling a single wake period of one of the portable devices, which overlaps inclusively with consecutive beacons and the single CTB; and minimizing duration of the single wake period of the portable device. The single CTB may be arranged next to one of the consecutive beacons. The method may further comprise assigning, by the coordinator, a single random access time block (RATB) for the one of the portable devices so as to overlap with the single wake period. The RATB may be arranged next to one of consecutive beacons. The CTB may be arranged next to the RATB. The CTB may be arranged next to one of the consecutive beacons.

Abstract: A data structure of a MAC header for a WirelessHD communication system including an application layer, a media access controller (MAC) layer, and a physical (PHY) layer, includes, a payload data packet from the application layer; a MAC header of a fixed length; a MAC header extension of a variable length; a MAC header extension control field which signals if a particular field needs to be included or excluded; a PHY header for synchronizing the behavior of the PHY layer; a first CRC segment for a cyclic redundancy checksum for checking transmission of the MAC header and the PHY header; and a second CRC segment for a cyclic redundancy checksum for checking transmission of the MAC header extension. Either the MAC header or the MAC header extension includes a size indication of the MAC header extension for facilitating checking of the second CRC segment.

Abstract: A home network architecture has an internal digital network interconnecting devices in the home. Entertainment services are introduced into the network through network interface units that are coupled to an external network and to the internal network. The network interface units perform the necessary interfacing between the external and internal networks and perform MPEG clock recovery from an MPEG video data stream. To prevent jitter when the MPEG data stream is transmitted over the internal network to set-top electronics, the recovered MPEG clock is locked by the network interface unit to the internal network clock and then transmitted over the internal network. The set-top electronics then recovers the MPEG clock from the locked MPEG clock transmitted over the internal network. The video data may then be generated using the recovered MPEG clock and displayed on a television, for example.

Abstract: A novel charge transport compound, a novel process using that novel compound and an organophotoreceptor includes:

Abstract: A sinusoidal acceleration trajectory controller is used in positioning a transducer at high speed to minimize vibration and acoustic noise. The controller reduces vibration and acoustic noise without sacrifice of seeking time by using a sinusoidal waveform as the actuator input. This sinusoidal waveform is a function of target track position and the seeking terminal time. When the velocity of the read/write head on the transducer reaches a maximum velocity, the sinusoidal waveform becomes a segment sinusoidal waveform, including a zero value waveform between two half sinusoidal waveforms. The amplitude of the sinusoidal waveforms and the coast period are minimized to obtain the minimum harmonic content in the segment sinusoidal waveform.

Abstract: An error correction arrangement that contains a Viterbi decoder and an RS decoder to provide inner and outer code decoding, respectively. A score keeper is arranged at the output of the Viterbi decoder to form a score for a decoded byte to indicate the number of error bits in the byte. A tie breaker is provided to compare the score with a preset threshold level. If the score is higher than the threshold level, the corresponding error byte is replaced with an erasure supplied to the RS decoder.

Abstract: A graphics data decompression arrangement in a TV set top box that includes a system ROM for storing graphics data broken down into tiles, each of which is identified by a unique index number. The index numbers that identify the tiles of graphics data required to be included in a current picture on a TV set screen are written into a DRAM. An MPEG decoder reads the index numbers to convert them into a graphics address signal supplied via a ROM address bus to the system ROM to indicate the addresses of the required tiles of graphics data. In response, the required tiles are fed to the MPEG decoder for decompression in accordance with an MPEG decompression algorithm. A time-division multiplexing scheme allows the ROM address bus to be used for transmitting to the system ROM an address signal from a CPU that indicates where information required for CPU operations is located in the system ROM. In response to the CPU address signal, the required information is fed to the CPU.

Abstract: A home network architecture has an internal digital network interconnecting devices in the home. Entertainment services are introduced into the network through network interface units that are coupled to an external network and to the internal network. The network interface units perform the necessary interfacing between the external and internal networks, and make the entertainment services available to all terminals connected to the internal network. A plurality of set-top electronics that do not have network interface units connect to the internal network and prepare the information in the digital data stream for display, by a television, for example.

Abstract: A set-top electronics and network interface unit arrangement is connected to an internal digital network interconnecting devices in the home. Entertainment services are introduced into the network through network interface units that are coupled to an external network and to the internal network. The network interface units perform the necessary interfacing between the external and internal networks, and make the entertainment services available to all terminals connected to the internal network. Set-top electronics that are separate from the network interface units connect to the internal network and convert the information in the digital data stream for display, by a television, for example.

Abstract: A handheld control device, such as an air mouse, for remotely operating a controlled device, such as a TV, computer (PC), VCR or digital satellite system is provided with a microprocessor. In order to conserve battery power, the microprocessor may be switched from a high power awake state in which the air mouse functions are performed, and a low power sleep state. Power is conserved through the use of conductive outer surfaces that form a switch that controls the awake/sleep state of the microprocessor. The holding of the remote control device in the hand of a user with a finger on a conductive control button awakens the microprocessor. Conversely, the microprocessor enters the sleep state once the user hand is removed from its operating position on the remote control device.

Abstract: An arrangement and method for decoding an input transport signal, such as an MPEG transport signal, and inserting closed caption data presents an analog video encoder with decompressed video data and closed caption data at a single interface. This avoids polling by a microprocessor and the hardware and software expense.

Abstract: An apparatus and method for testing the installation and functioning of a component of computer system has a test engine which causes the identity of a test to be performed to be stored in a nonvolatile memory before being performed. The test is announced to the installer and then ran. This procedure is performed for a sequence of tests. In the event of a crash during testing, the step-by-step sequencing of the tests and the storage of the test identifies step-by-step in the nonvolatile memory simplifies identification of the test that caused the crash for the installer.

Abstract: Mechanisms for loading and unloading heads on surfaces of disks in a disk drive provide ramps attached to central portions of the disks. The ramps are integral parts of spacers between disks or spacers or disk clamps at the top or bottom of a stack of disks. Each head assembly has a suspension arm that engages a corresponding ramp to lift a read/write head away from a surface of a disk. Heads land (or return to the surfaces of the disks) in landing zones at inner diameters of the disks and do not damage data because the loading zones contain no data storage. Alignment of the ramps with the disks is automatic because ramps directly attach to the disks.