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1. WO2020140206 - FREQUENCY LOCKED LOOP, ELECTRONIC DEVICE, AND FREQUENCY GENERATING METHOD

Publication Number WO/2020/140206
Publication Date 09.07.2020
International Application No. PCT/CN2019/070131
International Filing Date 02.01.2019
IPC
H03L 7/099 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
08Details of the phase-locked loop
099concerning mainly the controlled oscillator of the loop
CPC
H03L 7/085
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
08Details of the phase-locked loop
085concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
H03L 7/087
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
08Details of the phase-locked loop
085concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
087using at least two phase detectors or a frequency and phase detector in the loop
H03L 7/091
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
08Details of the phase-locked loop
085concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
091the phase or frequency detector using a sampling device
H03L 7/093
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
08Details of the phase-locked loop
085concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
093using special filtering or amplification characteristics in the loop
H03L 7/0991
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
08Details of the phase-locked loop
099concerning mainly the controlled oscillator of the loop
0991the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider
H03L 7/0992
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
08Details of the phase-locked loop
099concerning mainly the controlled oscillator of the loop
0991the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider
0992comprising a counter or a frequency divider
Applicants
  • 京东方科技集团股份有限公司 BOE TECHNOLOGY GROUP CO., LTD. [CN]/[CN]
  • 北京京东方技术开发有限公司 BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD. [CN]/[CN]
Inventors
  • 魏祥野 WEI, Xiangye
  • 修黎明 XIU, Liming
Agents
  • 北京市柳沈律师事务所 LIU, SHEN & ASSOCIATES
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) FREQUENCY LOCKED LOOP, ELECTRONIC DEVICE, AND FREQUENCY GENERATING METHOD
(FR) BOUCLE À VERROUILLAGE DE FRÉQUENCE, DISPOSITIF ÉLECTRONIQUE ET PROCÉDÉ DE GÉNÉRATION DE FRÉQUENCE
(ZH) 锁频环、电子设备和频率生成方法
Abstract
(EN)
A frequency locked loop, an electronic device, and a frequency generating method. The frequency locked loop (10) comprises: a control circuit (11) configured to determine the magnitude relationship between an input frequency (fi) and a feedback frequency (fb) to obtain a control signal, and determine a frequency control word (F) according to a control signal, wherein the control signal comprises a first sub-control signal (Cf) and a second sub-control signal (Cs), when the input frequency (fi) is greater than the feedback frequency (fb), the control circuit (11) is configured to generate the first sub-control signal (Cf), and when the input frequency (fi) is less than the feedback frequency (fb), the control circuit (11) is configured to generate the second sub-control signal (Cs) different from the first sub-control signal (Cf); and a digital control oscillation circuit (12) configured to generate and output an output signal (Sout) having a target frequency (fdco) according to the frequency control word (F).
(FR)
L'invention concerne une boucle à verrouillage de fréquence, un dispositif électronique et un procédé de génération de fréquence. La boucle à verrouillage de fréquence (10) comprend : un circuit de commande (11) configuré pour déterminer la relation d'amplitude entre une fréquence d'entrée (f i) et une fréquence de rétroaction (f b) pour obtenir un signal de commande et déterminer un mot de commande de fréquence (F) en fonction d'un signal de commande, le signal de commande comprenant un premier signal de sous-commande (Cf) et un second signal de sous-commande (Cs), lorsque la fréquence d'entrée (f i) est supérieure à la fréquence de rétroaction (f b), le circuit de commande (11) est configuré pour générer le premier signal de sous-commande (Cf) et lorsque la fréquence d'entrée (f i) est inférieure à la fréquence de rétroaction (f b), le circuit de commande (11) est configuré pour générer le second signal de sous-commande (Cs) différent du premier signal de sous-commande (Cf); et un circuit d'oscillation de commande numérique (12) configuré pour générer et délivrer en sortie un signal de sortie (S out) ayant une fréquence cible (f dco) en fonction du mot de commande de fréquence (F).
(ZH)
一种锁频环、电子设备和频率生成方法。该锁频环(10)包括:控制电路(11),被配置为判断输入频率(fi)和反馈频率(fb)的大小关系以得到控制信号,并根据控制信号确定频率控制字(F),其中,控制信号包括第一子控制信号(Cf)和第二子控制信号(Cs),当输入频率(fi)大于反馈频率(fb)时,控制电路(11)被配置为生成第一子控制信号(Cf),当输入频率(fi)小于反馈频率(fb)时,控制电路(11)被配置为生成不同于第一子控制信号(Cf)的第二子控制信号(Cs);数字控制振荡电路(12),被配置为根据频率控制字(F),生成并输出具有目标频率(fdco)的输出信号(Sout)。
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