Resources Contact Us Home
Block interleaver and de-interleaver with buffer to reduce power consumption

Image Number 4 for United States Patent #6625763.

A block interleaver is provided using a relatively small register file and a larger random access memory (RAM). In one embodiment, the size of the RAM is larger than the size of the register file by at least one order of magnitude. As a result, the register file consumes significantly less power than the RAM for similar operations. The register file receives a stream of sequential data values and stores the data values in a column order. The data values are then read from the register file in a row order. The data values read from the register file in a row order are then written to the RAM in a row order. The data values are then read from the RAM in a row order, thereby creating an interleaved data stream. In a particular embodiment, the data values are written to the RAM in a staggered row order and read from the RAM in a sequential row order. All accesses to the RAM are performed using the full width of the RAM, such that no unnecessary power is used to access the RAM. The register file consumes significantly less power than the RAM, thereby providing an overall power savings for the interleaving process. In different embodiments, the register file can be a single-port device or a dual-port device. A similar block de-interleaver is provided in another embodiment.

  Recently Added Patents
Substantially aligned boron nitride nano-element arrays and methods for their use and preparation
Electronic time stamping apparatus for use with an inground transmitter
Apparatus and method for exerting force on a subject tissue
PC secure video path
Multi-channel memory system including error correction decoder architecture with efficient area utilization
Adaptive take-off strips for smoothing ink consumption
  Randomly Featured Patents
Method and apparatus for performing eye diagram measurements
Recording and/or reproducing Apparatus Having a Station Transmission Coil for Contactless Communication with a Cassette Transponder
Electronic package having a sealing structure on predetermined area, and the method thereof
Mixed-mode process
Light-emitting semiconductor device using gallium nitride group compound
Cements from .beta.dicarbonyl polymers
Top of a rocker switch and lens
Process for the manufacture of a catalyst
Low-loss bloch wave guiding in open structures and highly compact efficient waveguide-crossing arrays
Hair cleansing composition