Resources Contact Us Home
System for spatially and temporally transposing data words arrayed in periodically recurring patterns

Image Number 9 for United States Patent #4602283.

A train of incoming data words, specifically digitized video samples arrayed in frames of Y lines of X pixels each which have already undergone a 2-dimensional spatial transformation, is scrambled by being divided into Z sequences (frames) whose data words are temporarily written in respective cells of Z.sup.2 storage units of a memory of dynamic-RAM Type. The Z.sup.2 storage units, each divided into Z sections, are read out in cyclic-succession--at a rate of one cell per unit--and each cell is reloaded immediately after being vacated. Reading and writing occurs for one set of Z sequences in a first addressing mode, conforming to the order of arrival of the data words in the incoming train, and for the next set in a second addressing mode involving the grouping of homologous data words of respective sequences into successive series of Z data words each. The two addressing modes alternate for consecutive sets and the outgoing train so formed can be subjected to a further transformation before being transmitted to a remote station for unscrambling.

  Recently Added Patents
Soybean cultivar CL0911610
Method and system for providing an intelligent visual scrollbar position indicator
Dye-sensitized solar cell, dye-sensitized solar cell module, and coating liquid for forming electrolyte layer
Apparatus, system, and method for non-interruptively updating firmware on a redundant hardware controller
Cooking device and method of manufacture of the same
Method for detecting directions of regularity in a two-dimensional image
Pickup device and method for manufacturing the same
  Randomly Featured Patents
Outlet assembly for a vacuum cleaning system
Display rack assembly
Porous polyester film
Mobile floor crane
Integrated circuit structure incorporating an inductor, an associated design method and an associated design system
Shift register and liquid crystal display using the same
Support for holding Syrian bread
Hydrophobic treatment method involving delivery of a liquid process agent to a process space
System with microporous reservoir having surface for diffusional delivery of agent
Method and apparatus for setting on-timer channel of digital broadcast receiver