- Patent Title: Universal automatic frequency control for multi-channel receivers
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Application No.: US16655890Application Date: 2019-10-17
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Publication No.: US10693442B1Publication Date: 2020-06-23
- Inventor: Carl Scarpa , Robert Joseph Topper
- Applicant: Sirius XM Radio Inc.
- Applicant Address: US NY New York
- Assignee: Sirius XM Radio Inc.
- Current Assignee: Sirius XM Radio Inc.
- Current Assignee Address: US NY New York
- Agency: Kramer Levin Naftalis & Frankel LLP
- Main IPC: H04B1/12
- IPC: H04B1/12 ; H03J7/04 ; H03J1/00

Abstract:
Systems and methods for performing automatic frequency control are provided. Instead of relying on individual frequency tuners for each channel of a multi-channel receiver system, the present subject matter uses a single frequency tuner for receiving each channel of the multi-channel receiver system. A locked demodulator may be designated as a reference demodulator and frequency offset values associated with the reference demodulator may be applied to other demodulators of the multi-channel receiver. These frequency offset values may be used by individual demodulators of each channel for correcting corresponding frequency offsets.
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