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Method and apparatus for identifying a data sequence related to a given data sequence
| Details |
Inventors: Chu, Winson;
Assignee: Oracle International Corporation (Redwood Shores, CA)
Primary Examiner: Metjahic; Safet
Assistant Examiner: Al-Hashemi; Sano
Attorney, Agent or Firm: Park, Vaughan & Fleming LLP
A method and apparatus for identifying a target data sequence related to a given data sequence, if a related target data sequence exists. Either sequence may be of variable length. Target data sequences are stored in a virtual tree comprising a root, one or more virtual blocks and one or more leaves. Each leaf contains a target data sequence. A cell in the root corresponding to (e.g., having an index matching the value of) the first datum (e.g., a byte, word, character) identifies a virtual block, of variable size, which contains a node corresponding to (e.g., at a position matching the value of) the next datum of the sequence. Each node contains a home block identifier identifying its home virtual block and a next block identifier identifying either another virtual block or a leaf. Virtual blocks may have no empty nodes, and nodes of multiple virtual blocks may be interleaved. |
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DETAILED DESCRIPTION The following description is presented to enable any person skilled in the art to make and use the invention, and is provided in the context of particular applications of the invention and their requirements.
Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art and the general principles defined herein may be applied to other embodiments and applications without departing from the scope of the present invention.
Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The program environment in which a present embodiment of the invention is executed illustratively incorporates a general-purpose computer or a special purpose device such as a hand-held computer.
Details of such devices (e.
g.
, processor, memory, data storage, display) may be omitted for the sake of clarity.
It should also be understood that the techniques of the present invention might be implemented using a variety of technologies.
For example, the methods described herein may be implemented in software executing on a computer system, or implemented in hardware utilizing either a combination of microprocessors or other specially designed application specific integrated circuits, programmable logic devices, or various combinations thereof.
In particular, the methods described herein may be implemented by a series of computer-executable instructions residing on a suitable computer-readable medium.
Suitable computer-readable media may include volatile (e.
g.
, RAM) and/or non-volatile (e.
g.
, ROM, disk) memory, carrier waves and transmission media (e.
g.
, copper wire, coaxial cable, fiber optic media).
Exemplary carrier waves may take the form of electrical, electromagnetic or optical signals conveying digital data streams along a local network or a publicly accessible network such as the Internet.
In one embodiment of the invention, an apparatus and methods are provided for retrieving a target sequence of data related to a given, or key, sequence of data
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Image Analysis 
