US 10,834,693 B2Granted

Synchronization system and method based on wireless or limited cable interconnection and MR system

AssigneeGE Precision Healthcare LLC

InventorsXin Jiang, Tingting Song, Desmond Teck Beng Yeo, Thomas Kwok-Fah Foo, Jing Li

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Abstract

A synchronization system based on wireless or limited cable interconnection is disclosed, which includes a central unit comprising a delay compensation module, and RF transmission channels. At least one channel comprises a clock controller and a synchronization controller. The central unit transmits a controlled clock signal and a controlled synchronization signal to the at least one channel, and receives a clock echo signal and a synchronization echo signal. The delay compensation module estimates a clock phase compensation based on the controlled clock signal transmitted and the clock echo signal received, and a synchronization delay compensation based on the controlled synchronization signal transmitted and the synchronization echo signal received. The clock controller and the synchronization controller adjusts respectively a clock signal and a synchronization signal received from the at least one channel based on the clock phase compensation and the synchronization delay compensation. MR systems and a synchronization method are also disclosed.

Claims21

Dependent claims

A synchronization system based on wireless or limited cable interconnection, comprising:

a central unit comprising a delay compensation module;
and
a plurality of RF transmission channels each in communication with the central unit, at least one of which comprises a clock controller and a synchronization controller,
wherein the central unit is configured to transmit a controlled clock signal and a controlled synchronization signal to the at least one RF transmission channel respectively, and receive a clock echo signal and a synchronization echo signal from the at least one RF transmission channel respectively;
the delay compensation module of the central unit is configured to estimate a clock phase compensation of the at least one RF transmission channel based on the controlled clock signal transmitted and the clock echo signal received from the at least one RF transmission channel, and estimate a synchronization delay compensation of the at least one RF transmission channel based on the controlled synchronization signal transmitted and the synchronization echo signal received from the at least one RF transmission channel;
and
the clock controller and the synchronization controller of the at least one RF transmission channel are respectively configured to adjust a clock signal received from the at least one RF transmission channel based on the clock phase compensation of the at least one RF transmission channel, and adjust a synchronization signal received from the at least one RF transmission channel based on the synchronization delay compensation of the at least one RF transmission channel.

4 more elements

A MR system, comprising:

a RF transmission system comprising a plurality of RF transmission channels;
a RF receiving system;
a gradient system;
a sequencer in communication with the RF transmission system, the RF receiving system and the gradient system respectively, and configured to generate a sequence to the RF transmission system, the RF receiving system and the gradient system;
and
a clock source configured to generate a clock signal and send the clock signal to the sequencer, the RF transmission system, the RF receiving system, and the gradient system, respectively;
and
a synchronization system configured to generate a synchronization signal and send the synchronization signal to the sequencer, the RF transmission system, the RF receiving system, and the gradient system, the synchronization system further comprising:
a central unit in wireless communication with the plurality of RF transmission channels, the central unit configured to estimate a clock phase compensation of at least one RF transmission channel and a synchronization delay compensation of at least one RF transmission channel,
wherein the plurality of RF transmission channels are configured to adjust the clock signal based on the clock phase compensation of the at least one of the RF transmission channels and configured to adjust the synchronization signal based on the synchronization delay compensation of the at least one RF transmission channel, and
wherein in response to the adjusted clock signal and the adjusted synchronization signal of the at least one RF transmission channel, the at least one RF transmission channel starts to transmit a transmission data command in the sequence.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/172,394Filed 26 Oct 2018
Priority: CN 2017 1 101766326 Oct 2017
Published: US 2019/0132813 A12 May 2019
Granted: 10 Nov 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04W 56/0045
Compensating for timing error of reception due to propagation delay: compensating for timing error by altering transmission time
G01R 33/32
Details of apparatus provided for in groups G01R33/44 - G01R33/64: excitation or detection systems, e.g. using radio frequency signals
G01R 33/3692
Electrical details, e.g. matching or coupling of the coil to the receiver: involving signal transmission without using electrically conductive…
G01R 33/422
Screening: of the radio frequency field