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121. 发明专利

CA1293032C FULLY DIGITAL PHASE-LOCKED LOOP 未知
公开(公告)号：CA1293032C
公开(公告)日：1991-12-10
申请号：CA550383
申请日：1987-10-27
申请人： MASSON JACQUES L R
发明人： MASSON JACQUES L R , JEANDOT JEAN-LOUIS
IPC分类号： H03L7/091 , H03L7/097
摘要： PHF.86597 1 2 20-10-1987 Fully digital phase-locked loop. A fully digital phase-locked loop comprises a sampler (1), an analog-to-digital converter (2), two quadrature demodulators (3 and 4) and their associated filters (5 and 6), and a decision logic (7) effecting the correction of the sampling phase around the value of the free-running frequency (fe) by the addition or subtraction of machine cycles of a signal processor (9). ¢Fig. 1!.

122. 发明专利

DE2845005A1 Frequency dependent signal derivation - uses two alternating voltages with intermediate direct voltage varying with their frequency ratio 未知
公开(公告)号：DE2845005A1
公开(公告)日：1980-04-17
申请号：DE2845005
申请日：1978-10-16
申请人： LICENTIA GMBH
发明人： MALINOWSKI CHRISTOPH DR ING , RINDERLE HEINZ ING GRAD
IPC分类号： G05B1/03 , G01R23/00 , G01R23/06 , G06G7/02 , H03D13/00 , H03K7/06 , H03L7/06 , H03L7/097 , H03L7/16 , H03L7/18 , H04B1/26 , H03B3/04 , H03J3/16 , H03J3/28 , H03K1/16 , H04Q9/10
摘要： A circuit producing a frequency dependent signal receives two alternating voltage input signals. It forms a basic component of arrangements for simple resolution of problems encountered in signal processing, control, and regulation. A direct component varying with the ration of the frequencies of the input signals is used to produce an output signal whose frequency is a function of the frequency ratio. The direct component V has the value A + B.f1/f2 where A and B are constants and f1 and f2 are the input signal frequencies.

123. 发明专利

GB1406898A FREQUENCY COMPARATOR SYSTEM 未知
公开(公告)号：GB1406898A
公开(公告)日：1975-09-17
申请号：GB5345272
申请日：1972-11-20
申请人： RCA CORP
IPC分类号： H03L7/097 , H03D13/00 , H03B3/04
摘要： 1406898 APC systems RCA CORPORATION 20 Nov 1972 [19 Nov 1971] 53452/72 Heading H3A An arrangement comprises a first comparator for comparing the frequencies of an input signal at 11 and a locally generated signal at 19 and including squarers 13, 21, and monostable multivibrators 15, 26 for producing a given number of respective pulses of fixed duration, an arrangement 17, 29, 35 for combining the two sets of pulses to produce an output signal reflecting the frequency difference, a phase locked loop detector 70 responsive to the input and locally generated signals to provide an output dependent on the relative phase difference, a second comparator 50 for comparing the output signal from the first comparator with a reference signal Vref2 for causing a switch 60 to change state when the frequency difference is zero for selectively coupling the phase detector 70 output in place of the frequency comparator output to a following stage, e.g. the VCO 19. For operation at higher frequencies, frequency dividers may be incorporated in front of the squarers 13, 21. The arrangement may be incorporated in a phase lock loop for synchronizing the local oscillator to an input frequency. In operation, a capacitor 35 is charged up via a current source 17 by the input pulses and discharged via a current sink 29 by the local oscillator pulses and the net charge voltage as integrated by 37, 39 represents the frequency difference.

124. 发明专利

JPWO2011101981A1 半導体集積回路装置有权
公开(公告)号：JPWO2011101981A1
公开(公告)日：2013-06-17
申请号：JP2012500433
申请日：2010-02-19
申请人：ルネサスエレクトロニクス株式会社
发明人：誉中村 , 誉中村 , 浩輔矢山 , 浩輔矢山
IPC分类号： H03L1/02 , H03K7/06 , H03L7/097
CPC分类号： H03L1/022 , H03L7/00
摘要：周波数電圧変換回路13は、スイッチSW1,SW2から構成されるスイッチ部、静電容量素子C,C10〜C13、およびスイッチCSW0〜CSW3から構成されている。静電容量素子C10〜C13は、容量の絶対値が異なるもので構成され、設計者が意図する周波数範囲をカバーするよう設ける。静電容量値は、たとえば、2の重み付けがされている静電容量素子C11〜C13は、たとえば、4ビットの周波数調整制御信号SELC0〜SELC3に基づいて、スイッチCSW0〜CSW3が選択し、周波数の切り替えを行う。

125. 发明专利

JP4298668B2 Frequency difference compensator 有权
公开(公告)号：JP4298668B2
公开(公告)日：2009-07-22
申请号：JP2005052484
申请日：2005-02-28
申请人：日本電信電話株式会社
发明人：誠中村 , 潤遠藤
IPC分类号： H03L7/097

126. 发明专利

JP3278625B2 失效
公开(公告)号：JP3278625B2
公开(公告)日：2002-04-30
申请号：JP1144899
申请日：1999-01-20
IPC分类号： H04N5/12 , H03L7/097 , H04N5/46

127. 发明专利

JPH0314367B2 失效
公开(公告)号：JPH0314367B2
公开(公告)日：1991-02-26
申请号：JP8946384
申请日：1984-05-07
申请人： HITACHI SEISAKUSHO KK , HITACHI DENSHI KK
发明人： MURATA NORIO , SATO KAZUHIRO , SATO KAZUO , NAGAHARA SHUSAKU
IPC分类号： H04N3/15 , G09G3/00 , H03L7/06 , H03L7/08 , H03L7/083 , H03L7/097 , H03L7/24 , H04N3/14

128. 发明专利

JPS5562365A CIRCUIT DEVICE FOR OBTAINING SIGNAL DEPENDENT ON FREQUENCY 失效
公开(公告)号：JPS5562365A
公开(公告)日：1980-05-10
申请号：JP13253079
申请日：1979-10-16
申请人： LICENTIA GMBH
发明人： KURISUTOFU BUEE MARINOFUSUKII , HAINTSU RINDERURE
IPC分类号： G05B1/03 , G01R23/00 , G01R23/06 , G06G7/02 , H03D13/00 , H03K7/06 , H03L7/06 , H03L7/097 , H03L7/16 , H03L7/18 , H04B1/26

129. 发明专利

JPS5320168B2 失效
公开(公告)号：JPS5320168B2
公开(公告)日：1978-06-24
申请号：JP9613672
申请日：1972-09-27
IPC分类号： H03L7/06 , H02M7/21 , H03D1/00 , H03D1/22 , H03J7/02 , H03L7/08 , H03L7/097 , H04N5/455 , H04N5/50 , H03B3/04

130. 发明专利

JPS5320167B2 失效
公开(公告)号：JPS5320167B2
公开(公告)日：1978-06-24
申请号：JP9613572
申请日：1972-09-27
IPC分类号： H04N5/50 , H03J7/02 , H03L7/06 , H03L7/08 , H03L7/097 , H03B3/04

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