US 10129627

As a senior US patent analyst, here is a concise summary of US Patent 10,129,627.

Patent Information:

• Title: Wireless digital audio music system
• Assignee: ONE-E-WAY Inc
• Inventor: C. Earl Woolfork
• Filing Date: January 21, 2016
• Issue Date: November 13, 2018
• Abstract: A wireless digital audio system includes a portable audio source with a digital audio transmitter operatively coupled thereto and an audio receiver operatively coupled to a headphone set. The audio receiver is configured for digital wireless communication with the audio transmitter. The digital audio receiver utilizes fuzzy logic to optimize digital signal processing. Each of the digital audio transmitter and receiver is configured for code division multiple access (CDMA) communication. The wireless digital audio system allows private audio enjoyment without interference from other users of independent wireless digital transmitters and receivers sharing the same space.

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Plain-Language Overview of Independent Claims:

This patent has three independent claims: Claim 1, Claim 3, and Claim 5.

Claim 1: A wireless digital audio spread spectrum receiver.
This claim describes a mobile wireless receiver (like one in a pair of headphones) designed to receive a high-quality audio signal (in the 20 Hz to 20 kHz frequency range) and a unique user code from a transmitter. This receiver uses a "direct conversion module" to handle incoming spread spectrum signals. A key feature is its ability to demodulate signals using different methods, specifically including Differential Phase Shift Keying (DPSK) and at least one other non-DPSK method. It uses the unique user code to communicate only with its paired transmitter, employing Code Division Multiple Access (CDMA) to avoid interference from other nearby wireless audio devices. The receiver then converts the digital signal back to an analog audio output for a speaker.

Claim 3: A portable spread spectrum audio receiver.
Similar to the first claim, this claim details a portable audio receiver that receives and stores a unique user code to pair with a specific transmitter. It is designed to handle high-quality audio signals (20 Hz to 20 kHz) that have been encoded to reduce "intersymbol interference," a type of signal distortion. The receiver decodes this special encoding and can perform multiple types of demodulation, including both DPSK and a non-DPSK method. It utilizes CDMA and the unique user code to ensure it only plays audio from its designated transmitter, ignoring other signals. Finally, a digital-to-analog converter and a speaker reproduce the audio for the listener.

Claim 5: A wireless digital coded audio spread spectrum transmitter.
This claim focuses on the other half of the system: a portable transmitter that connects to an audio player. This transmitter takes an audio signal, encodes it to reduce intersymbol interference, and then modulates it for wireless transmission. The modulation process is flexible, capable of using either DPSK or a non-DPSK method. The transmitter sends out the audio signal along with a unique user code using CDMA. This unique code is what allows the corresponding receiver to pick out this specific signal from a crowd of other wireless transmissions in the same frequency band.

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Litigation Status:

A search of the CAFC (Court of Appeals for the Federal Circuit) dockets for 2026 did not yield any specific results for litigation involving patent number 10,129,627 as of the current date. However, the provided patent information indicates a history of litigation in various district courts and post-grant proceedings (IPR) before the Patent Trial and Appeal Board (PTAB).