摘要:
Some embodiments provide an integrated circuit that includes several groups of circuits, each group of circuits includes a set of configurable logic circuits. The integrated circuit has at least one direct connection, without any intervening interconnect circuits, that connects an output of a configurable logic circuit in one group of circuits to another circuit in another group of circuits that does not neighbor the first group of circuits and that is not aligned with the first group of circuits. In some embodiments, the direct connection has intervening buffer circuits, but no other intervening circuits.
摘要:
Some embodiments provide a configurable integrated circuit (IC) comprising multiple deskew circuits for delaying data passage. Each of the deskew circuits comprises a stepwise delay circuit with multiple outputs and an input selection circuit with multiple inputs. Multiple outputs connect to multiple inputs. In some embodiments the configurable IC is a subcycle reconfigurable IC. In some such embodiments each of the deskew circuits further includes a space-time load control circuit for commanding the stepwise delay circuit to load during a selected subcycle. In some embodiments the multiple deskew circuits send data to trigger circuit. In some such embodiments the trigger circuit triggers a trace buffer to stop recording a data stream. In some such embodiments the trigger circuit triggers the trace buffer to stop after a programmable delay.
摘要:
A Method And Apparatus For Control of Rate-Distortion Tradeoff by Mode Selection in Video Encoders is Disclosed. The system of the present invention first selects a distortion value D near a desired distortion value. Next, the system determines a quantizer value Q using the selected distortion value D. The system then calculates a Lagrange multiplier lambda using the quantizer value Q. Using the selected Lagrange multiplier lambda and quantizer value Q, the system begins encoding pixelblocks. If the system detects a potential buffer overflow, then the system will increase the Lagrange multiplier lambda. If the Lagrange multiplier lambda exceeds a maximum lambda threshold then the system will increase the quantizer value Q. If the system detects a potential buffer underflow, then the system will decrease the Lagrange multiplier lambda. If the Lagrange multiplier lambda falls below a minimum lambda threshold then the system will decrease the quantizer value Q.
摘要:
Some embodiments provide an architecture for establishing multi-participant video conferences. This architecture has a central distributor that receives video images from two or more participants. From the received images, the central distributor generates composite images that the central distributor transmits back to the participants. Each composite image includes a set of sub images, where each sub image belongs to one participant. In some embodiments, the central distributor saves network bandwidth by removing each particular participant's image from the composite image that the central distributor sends to the particular participant. In some embodiments, images received from each participant are arranged in the composite in a non-interleaved manner. For instance, in some embodiments, the composite image includes at most one sub-image for each participant, and no two sub-images are interleaved.
摘要:
Some embodiments of the invention provide a method of processing audio data while creating a media presentation. The media presentation includes several audio streams. The method processes a section of a first audio stream and stores the processed section of the first audio stream. The method also processes a section of a second audio stream that overlaps with the processes section of the first audio stream. The method then processes the section of the second audio stream independently of the first audio stream. In some embodiments, the method processes the first audio stream section by applying an effect to the first audio stream section. Also, in some embodiments, the processing of the first audio stream section also entails performing a sample rate conversion on the first audio stream section.
摘要:
An event logging and analysis mechanism which creates an event object for event of an application to be logged. The event logging mechanism logs into the event object the start time, end time and other information regarding the event. The analysis of the collected event objects may include hierarchical and contextual grouping as well as aggregation of events considered to be identical. The mechanism operates independent of the application whose events it logs and can be turned on and off independently. A user may define the levels of hierarchy and contexts upon which to analyze the event objects.
摘要:
Method For Implementing A Quantizer In A Multimedia Compression And Encoding System is disclosed. In the Quantizer system of the present invention, several new quantization ideas are disclosed. In one embodiment, adjacent macroblocks are grouped together into macroblock groups. The macroblock groups are then assigned a common quantizer value. The common quantizer value may be selected based upon how the macroblocks are encoded, the type of macroblocks within the macroblock group (intra-blocks or inter-blocks), the history of the motion vectors associated with the macroblocks in the macroblock group, the residuals of the macroblocks in the macroblock group, and the energy of the macroblocks in the macroblock group. The quantizer value may be adjusted in a manner that is dependent on the current quantizer value. Specifically, if the quantizer value is at the low end of the quantizer scale, then only small adjustments are made. If the quantizer value is at the high end then larger adjustments may be made to the quantizer. Finally, in one embodiment, the quantizer is implemented along with an inverse quantizer for efficient operation.
摘要:
Some embodiments of the invention provide a configurable integrated circuit (“IC”). The configurable IC includes a set of configurable logic circuits for configurably performing a set of functions on a set of inputs. The IC also includes several input select interconnect circuits for selecting the input set supplied to each configurable logic circuit. Each input select interconnect circuit is associated with a particular configurable logic circuit. When a configurable logic circuit is used to perform a multiplication operation, at least one of its associated input select interconnect circuits performs a logic operation that implements part of the multiplication operation.
摘要:
Embodiments of the invention provide methods and apparatuses for incorporating fixed terminal devices within an integrated wireless system using a fixed terminal adaptor, and to indicate the capabilities of the fixed terminal adaptor. In accordance with one embodiment, a fixed terminal adaptor is enabled to indicate its capabilities to the network controller of the integrated wireless system. For one such embodiment, the network controller is able to select the appropriate bearer mechanisms to support the expected fixed terminal services.
摘要:
Some embodiments of the invention provide a method for inserting several fills in an integrated circuit (“IC”) layout. The method identifies a set of potential fills in a region of an IC layout, where the set of potential fills has a first fill size, wherein the first fill size is from a set of fill sizes. The method specifies a halo around each potential fill in the set of potential fills. For each potential fill, the method determines whether the specified halo overlaps with a foreign object in the region of the layout. For each potential fill, the method specifies a legal fill in the region of the IC layout if the specified halo does not overlap with a foreign object in the region of the IC layout. The method inserts at least one legal fill in the region of the IC layout. In some embodiments, the halo is a spacing halo.