US 7593428

Patent Analysis: U.S. Patent 7,593,428

Washington, D.C. - April 26, 2026 - An analysis of United States Patent 7,593,428 reveals a method for enhancing data integrity in packet-based communications. The patent, assigned to IOT Innovations LLC, details a system for applying multiple, dynamically selected checksums to different parts of a single data packet.

There is no record of U.S. Patent 7,593,428 in the 2026 dockets of the U.S. Court of Appeals for the Federal Circuit.

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Summary of U.S. Patent 7,593,428

Feature	Details
Title	Apparatus, and associated method, for forming, and operating upon, multiple-checksum-protected data packet
Assignee	IOT Innovations LLC
Inventors	Keith Miller, Marta Karzewicz
Filing Date	January 9, 2007
Issue Date	September 22, 2009
Abstract	Apparatus, and an associated method, for forming a UDP-Lite, or other, data packet with multiple, dynamically-selected, checksum-protected parts. Digitized data is provided to a formatter, and the formatter forms the data packet to include header fields identifying parts of the payload portion of the data packet that are checksum-protected with different checksums. Additional indicia is contained in the header part of the data packet to identify the checksum-type and the checksum-values associated with the separate parts of the data packet. Multiple, contiguous parts of the data packet are checksum-protected with selectable checksum-types, selected by a selector that operates to control operation of the formatter.

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Plain-Language Overview of Independent Claims

U.S. Patent 7,593,428 contains four independent claims: 1, 12, 14, and 18. Below is a plain-language explanation of each.

Independent Claim 1: This claim describes a physical apparatus designed to create a specially formatted data packet. The key components are a "formatter" that assembles the data packet and a "selector" that decides which parts of the packet get special error-checking protection (a checksum). A crucial aspect of this invention is that the selector's decisions are influenced by the current conditions of the communication channel, such as how noisy or clear the connection is. In simple terms, it's a device that can adjust the level of error protection for different pieces of data within a single packet based on the quality of the network connection.

Independent Claim 12: This claim focuses on the receiving end of the communication. It outlines an apparatus that takes in a specific type of data packet, known as a User Datagram Protocol lite (UDP-lite) packet. This device has a "checksum extractor" that reads information from the packet's header to understand how different parts of the data were protected against errors. It then uses a "checksum calculator" to perform its own calculations to see if any of the data was corrupted during transmission. Essentially, this is a device that can understand and verify the complex, multi-part error-checking scheme set up by the sending apparatus described in claim 1.

Independent Claim 14: This claim shifts from a physical device to a method or a process. It describes the steps for creating the multi-checksum data packet. The process involves:

1. Receiving data at a transceiver station.
2. Using a processor with programmed instructions to select different portions of the data that need to be protected by different checksums.
3. Performing the necessary checksum calculations for each selected portion.
4. Formatting the data into a packet that includes the data portions and the corresponding checksum information.

This claim essentially covers the software or firmware instructions that would make the apparatus in claim 1 function.

Independent Claim 18: This claim details the method used by the receiving device. The steps are:

1. Receiving a UDP-lite data packet at a transceiver.
2. Using a processor with programmed instructions to extract the different checksum values from the packet's header, each associated with a different data portion.
3. Performing checksum calculations on each data portion based on the extracted information.
4. Verifying the integrity of each data portion by comparing the calculated checksum with the one sent in the packet.

Similar to claim 14, this claim represents the operational method for the apparatus described in claim 12.