Abstract: A method and apparatus is described herein for pulse shift modulation of output waveforms for reducing crosstalk on interconnects. Based on input pulses/bits, an output waveform is selectively delayed by a shift value to ensure transitions in a first direction occur in a first half of a period and transitions in a second direction occur in a second half of the period. When the same pulse shift modulation is implemented on surrounding traces, certain worst-case crosstalk scenarios are reduced; thus reducing crosstalk and increasing performance in power consumption and speed of data transfer.

Abstract: According to an embodiment of the invention, a method and apparatus for signal modulation are described. According to an embodiment of the invention, a method comprises producing and transferring a modulated signal. The modulation of the signal is over a plurality of amplitude levels, including at least a first amplitude level, a second amplitude level and a third amplitude level, and over a plurality of time slots, including at least a first time slot, a second time slot, and a third time slot. The modulated signal transitions from the first amplitude level to the second amplitude level in the first phase slot, remains at the second amplitude level in the second time slot, and transitions from the second amplitude level to the third amplitude level in a third time slot.

Abstract: A method and apparatus is described herein for pulse shift modulation of output waveforms for reducing crosstalk on interconnects. Based on input pulses/bits, an output waveform is selectively delayed by a shift value to ensure transitions in a first direction occur in a first half of a period and transitions in a second direction occur in a second half of the period. When the same pulse shift modulation is implemented on surrounding traces, certain worst-case crosstalk scenarios are reduced; thus reducing crosstalk and increasing performance in power consumption and speed of data transfer.

Abstract: A connector is configured for insertion and removal of a digital device. The connector has contacts arranged to make electrical connection to conductors on the digital device while the digital device is inserted in the connector. A first electromagnetic coupler is connected to at least one of the contacts of the connector. The electromagnetic coupler is configured for electromagnetic coupling at an interface to a second electromagnetic coupler that is connected to a communication bus.

Abstract: According to an embodiment of the invention, a method and apparatus for signal modulation are described. According to an embodiment of the invention, a method comprises producing and transferring a modulated signal. The modulation of the signal is over a plurality of amplitude levels, including at least a first amplitude level, a second amplitude level and a third amplitude level, and over a plurality of time slots, including at least a first time slot, a second time slot, and a third time slot. The modulated signal transitions from the first amplitude level to the second amplitude level in the first phase slot, remains at the second amplitude level in the second time slot, and transitions from the second amplitude level to the third amplitude level in a third time slot.

Abstract: A connector is configured for insertion and removal of a digital device. The connector has contacts arranged to make electrical connection to conductors on the digital device while the digital device is inserted in the connector. A first electromagnetic coupler is connected to at least one of the contacts of the connector. The electromagnetic coupler is configured for electromagnetic coupling at an interface to a second electromagnetic coupler that is connected to a communication bus.

Abstract: Systems and methods for streaming of multimedia files over a network are described. A streaming delivery accelerator (SDA) caches content from a content provider and streams the cached content to a user. Cached content is streamed when a quality metric exceeds a predetermined value that can depend on the transmission bandwidth to the user. The caching process can be iterative, with only content not previously retained in the cache requested from the content provider. Systems and methods for effective cache management are also described.

Abstract: Systems and methods for streaming of multimedia files over a network are described. A streaming delivery accelerator (SDA) receives content from a content provider and streams the receives content to a user when a quality metric exceeds a predetermined value. A similar quality metric applies to caching and storing the received content in the SDA' cache. The caching process can be iterative, with only content not previously retained in the SDA's cache being requested from and retransmitted by the content provider.

Abstract: Systems and methods for streaming of multimedia files over a network are described. A streaming delivery accelerator (SDA) caches content from a content provider and streams the cached content to a user. Cached content is incrementally added to the cache memory, and the SDA is disconnected from the content provider when sufficient content for a predetermined time of play has been received. The caching process can be iterative, with only content not previously retained in the cache requested from the content provider. A method for cache eviction of content no longer of interest to users is also described.

Abstract: The present invention provides a low cost, efficient vertical cavity surface emitting laser package (300) and manufacturing method, the package having a head assembly having at least three leads, a vertical cavity surface emitting laser die bonded to a top surface of the head assembly, for generating a beam of light, and a photodiode, die bonded to the top surface of the head assembly proximate to the vertical cavity surface emitting laser for receiving at least a portion of the beam of light, and generating feedback for adjusting an electrical input current to the vertical cavity surface emitting laser based on a received optical power of the portion of the beam of light received. The vertical cavity surface emitting laser and the photodiode are injection molded in a predetermined shape with a recessed area for placement of a partially reflective holographic optical element/reflector.

Abstract: The present invention provides a method (600) and device (200,500) for providing temperature-stable optical feedback for optical packages. The device includes an optical emitter (202,502), a first partially reflective optical element (204, 504), a second partially reflective optical element (206,506), a first optical sensing unit (208,508), a second optical sensing unit (210,510), and a feedback unit (212). The optical emitter (202,502) is responsive to an electrical input current and generates a beam of light (214). The first optical sensing unit (208,508) and the second optical sensing unit (210,510) receive diffracted portions of the beam of light (214) from the first partially reflective optical element (204, 504) and the second partially reflective optical element (206,506) respectively and generate a first feedback signal E1 and a second feedback signal E2.

Abstract: Board delamination during the singulation from a board panel and board sagging during front-end assembly are two biggest problems encountered in cellular manufacturing lines. The method (700) and circuit board panel (600) of the present invention substantially eliminate assembly-line delamination and sagging for circuit board manufacturing. A number of slots are punched to fit into a circuit board profile. V-grooves are cut along each of the circuit board profiles through the slots and directly opposite on a top and bottom of the circuit board. Thus, optimization of the cut-outs and v-groove configurations eliminate tearing/delamination and substantially reduce sagging.