Invention Grant
US09590643B2 Phase error detection in phase lock loop and delay lock loop devices
有权
锁相环和延迟锁环设备中的相位误差检测
- Patent Title: Phase error detection in phase lock loop and delay lock loop devices
- Patent Title (中): 锁相环和延迟锁环设备中的相位误差检测
-
Application No.: US14940644Application Date: 2015-11-13
-
Publication No.: US09590643B2Publication Date: 2017-03-07
- Inventor: John W. Stanton , Pradeep Thiagarajan
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Roberts Mlotkowski Safran Cole & Calderon, P.C.
- Agent Steven Meyers; Andrew M. Calderon
- Main IPC: G01R25/00
- IPC: G01R25/00 ; H03L7/095 ; H03K5/24
Abstract:
A device includes a lock detect circuit that is structured and arranged to: convert a reference clock to a reference triangle wave; convert a feedback clock to a feedback triangle wave; determine whether the feedback triangle wave is within a tolerance margin that is defined relative to the reference triangle wave; and generate a determiner output that is a first value when the feedback triangle wave is not within the tolerance margin, and a second value when the feedback triangle wave is within the tolerance margin.
Public/Granted literature
- US20160079990A1 PHASE ERROR DETECTION IN PHASE LOCK LOOP AND DELAY LOCK LOOP DEVICES Public/Granted day:2016-03-17
Information query
