US 8643513

Here's a concise summary of US Patent 8643513:

Title: Data compression systems and methods

Assignee: Realtime Data LLC

Inventor: James J. Fallon

Filing Date: June 6, 2011

Issue Date: February 4, 2014

Abstract: The patent describes systems and methods for achieving fast and efficient data compression by combining content-independent and content-dependent data compression techniques. The approach involves analyzing an input data block to identify its data type. If the data type is identified, content-dependent compression is applied. If the data type cannot be identified, content-independent data compression is performed.

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Plain-Language Overview of Independent Claims:

• Claim 1 (Method for compressing data): This claim outlines a method for compressing data that involves:

  1. Analyzing: Examining a block of incoming data from a stream that contains various data types to determine its specific data type.
  2. Content-Dependent Compression: If the data type is successfully identified, applying compression methods specifically tailored to that identified data type.
  3. Content-Independent Compression: If the data type cannot be identified, applying general compression methods that do not rely on the data's specific content.

• Claim 9 (System for compressing data): This claim describes a physical system designed to perform the data compression method of Claim 1. It includes:

  1. A data recognition module configured to analyze and identify the data type of an input data block.
  2. A content dependent encoder module containing multiple encoders (compression algorithms) that are associated with and optimized for specific identified data types.
  3. A content independent encoder module containing multiple encoders suitable for compressing data when a specific data type is not identified. The system routes the data block to either the content-dependent or content-independent encoder module based on the data type recognition result.

• Claim 17 (Method for compressing data): This claim presents an enhanced method for data compression, which incorporates a compression ratio evaluation:

  1. Analyzing: Examining a data block to identify its data type.
  2. Content-Dependent Compression: If the data type is identified, performing compression using content-dependent algorithms.
  3. Ratio Determination & Comparison: After content-dependent compression, calculating the achieved compression ratio and comparing it against a predetermined "first compression threshold."
  4. Conditional Content-Independent Compression: If the data type was not initially identified, or if the content-dependent compression failed to meet the specified "first compression threshold," then the data block is subjected to content-independent data compression.

• Claim 25 (System for compressing data): This claim details a system that carries out the method described in Claim 17. It comprises:

  1. A content dependent data recognition module for identifying data types.
  2. A content dependent encoder module with encoders corresponding to recognized data types.
  3. A content independent encoder module with encoders for data that is either unrecognized or poorly compressed by content-dependent methods.
  4. A compression ratio module to determine and compare compression ratios against a threshold, enabling the system to decide whether to proceed with content-independent compression if the content-dependent attempt is insufficient or if no data type was recognized.

• Claim 33 (Method for decompressing data): This claim outlines a method for decompressing data that was previously compressed using the patent's techniques:

  1. Receiving Data: Taking in a compressed data block.
  2. Descriptor Extraction: Extracting a "data compression type descriptor" embedded within the data block. This descriptor indicates the specific compression technique(s) used (e.g., no compression, a single method, or a sequence of methods).
  3. Conditional Decoding: If the descriptor indicates no compression ("null"), the original, undecoded data block is simply output. Otherwise, the method selects the appropriate decoder or sequence of decoders corresponding to the descriptor to decompress and reconstruct the original data.

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USPTO Database and CAFC 2026 Dockets:

A search of the USPTO database confirms that US Patent 8643513B2, titled "Data compression systems and methods," was issued on February 4, 2014, from an application filed on June 6, 2011. The patent's current assignee is Realtime Data LLC, and the inventor is James J. Fallon. The legal status of the patent is "Expired - Fee Related," with an adjusted expiration date of November 2, 2019.

A search for US patent 8643513 in the CAFC 2026 dockets did not return any direct case filings or opinions related to this specific patent number in the year 2026. The patent's litigation history, as provided, indicates prior CAFC cases (21-2251, 21-2291) filed in 2021.