公开(公告)号：US10693490B1

公开(公告)日：2020-06-23

申请号：US16529765

申请日：2019-08-01

Applicant: Faraday Technology Corp.

Inventor： Chiao-Min Chen ,  Min-Yuan Wu ,  Shih-Yi Shih ,  Po-Liang Chen

IPC: H03M3/00

Abstract: A Sigma-Delta (Σ-Δ) analog-to-digital converter (ADC) and operation method thereof are provided. The Σ-Δ ADC includes a Σ-Δ modulator, a dynamic element matching (DEM) circuit and a control circuit. An input terminal of the Σ-Δ modulator is configured to receive an analog signal. The Σ-Δ modulator is configured to convert the analog signal into a digital signal based on a feedback signal. The DEM circuit is coupled to the Σ-Δ modulator to receive the digital signal. The DEM circuit is configured to perform a DEM algorithm on the digital signal to generate a feedback signal, and provide the feedback signal to the Σ-Δ modulator. The control circuit listens to the digital signal to detect a mute period. The control circuit disables the DEM circuit during the mute period to suspend a progress of the DEM algorithm.

公开(公告)号：US11290309B2

公开(公告)日：2022-03-29

申请号：US17129799

申请日：2020-12-21

Applicant: Faraday Technology Corp.

Inventor： Shih-Yi Shih

IPC: H04L27/14 ,  H04L27/12 ,  H03M13/25 ,  H04L43/50 ,  H04L43/0817

Abstract: The present invention discloses a Trellis-Coded-Modulation (TCM) decoder applied in a receiver, wherein the TCM decoder includes a branch metric unit, a path metric unit, a trace-back length selection circuit and a survival path management circuit. In operations of the TCM decoder, the branch metric unit is configured to receive multiple input codes to generate multiple sets of branch information. The path metric unit is configured to calculate multiple survival paths according to the multiple sets of branch information. The trace-back length selection circuit is configured to select a trace-back length, wherein the trace-back length is determined according to a signal quality of the receiver. The survival path management circuit is configured to return the multiple survival paths for the trace-back length in order to generate an output code.

公开(公告)号：US20210314202A1

公开(公告)日：2021-10-07

申请号：US17129799

申请日：2020-12-21

Applicant: Faraday Technology Corp.

Inventor： Shih-Yi Shih

IPC: H04L27/14 ,  H04L27/12 ,  H04L12/26 ,  H03M13/25

Abstract: The present invention discloses a Trellis-Coded-Modulation (TCM) decoder applied in a receiver, wherein the TCM decoder includes a branch metric unit, a path metric unit, a trace-back length selection circuit and a survival path management circuit. In operations of the TCM decoder, the branch metric unit is configured to receive multiple input codes to generate multiple sets of branch information. The path metric unit is configured to calculate multiple survival paths according to the multiple sets of branch information. The trace-back length selection circuit is configured to select a trace-back length, wherein the trace-back length is determined according to a signal quality of the receiver. The survival path management circuit is configured to return the multiple survival paths for the trace-back length in order to generate an output code.