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21. 发明专利

JP3220895B2 失效
公开(公告)号：JP3220895B2
公开(公告)日：2001-10-22
申请号：JP34510395
申请日：1995-12-08
IPC分类号： H03L7/24

22. 发明专利

JP2000201057A PULSE GENERATING CIRCUIT 失效
公开(公告)号：JP2000201057A
公开(公告)日：2000-07-18
申请号：JP213099
申请日：1999-01-07
申请人： NIPPON ELECTRIC IC MICROCOMPUT
发明人： MARUYAMA SHIGERU
IPC分类号： H03K3/033 , H03K3/355 , H03K5/14 , H03L7/24
摘要： PROBLEM TO BE SOLVED: To provide a pulse generating circuit for generating a stable pulse. SOLUTION: This pulse generating circuit is constituted of an OS(oscillator) circuit 1 for inputting a clock signal, a P channel MOS transistor 2 for receiving the output of the OS circuit at the gate, a delay circuit 4 connected with an output line 10, an OS circuit 5 for inputting the output of the delay circuit, an N channel MOS transistor 3 for receiving the output of the OS circuit at the gate, an inverter 6 for outputting the anti-phase of the output of the OS circuit, a delay circuit 7 connected with the output line 10, an AND circuit 8 for inputting the outputs of the inverter 6 and the delay circuit 7, and an N channel MOS transistor 9 for receiving the output of the AND circuit at the gate. When a clock signal is changed from a low level to a high level in a period in which an output is a high level in an initial state, the output level of the delay circuit 7 connected with the output line 10 is turned into a high level, and the output of the inverter 6 is also turned into a high level. Then, the N channel MOS transistor 9 is turned on by the AND circuit 8, and the output level is changed to a low level.

23. 发明专利

JP2000091909A SYNCHRONIZED SIGNAL OSCILLATING CIRCUIT 失效
公开(公告)号：JP2000091909A
公开(公告)日：2000-03-31
申请号：JP25722998
申请日：1998-09-10
申请人： SHARP KK
发明人： MORI HARUYA
IPC分类号： H03K4/06 , H03K3/0231 , H03K4/502 , H03L7/00 , H03L7/06 , H03L7/24
摘要： PROBLEM TO BE SOLVED: To provide the synchronized signal oscillating circuit where a period and an amplitude of its oscillated output are made constant during a self-running oscillation and a synchronized oscillation so that the oscillated output is quickly synchronized with a synchronizing pulse in the case of shifting from the self- running oscillation state to the synchronized oscillation state, the oscillated output is not lowered than a specified lower limit, fluctuation in the oscillated amplitude is suppressed, and the self-running oscillation state is smoothly shifted from the synchronized oscillation state after missing the synchronizing pulse so as to realize the stable oscillation period and the stable oscillation amplitude. SOLUTION: An invalidating means 17 inhibits the output as of either of a 1st comparison means 14 or a 2nd comparison means 15 from being transmitted to a state maintenance means 16 when a synchronizing pulse is in an active state permits the transmission of the output to the means 16 when the synchronizing pulse is an inactive state on the other hand. Furthermore, when the synchronizing pulse shifts to the inactive state, an edge trigger means 18 switches over the output signal of the state maintenance means 16 between a lowering signal and an ascending signal.

24. 发明专利

JPH09162733A INJECTION SYNCHRONIZED OSCILLATOR 失效
公开(公告)号：JPH09162733A
公开(公告)日：1997-06-20
申请号：JP34510395
申请日：1995-12-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KAMOGAWA KENJI , TOKUMITSU TSUNEO
IPC分类号： H03L7/24
摘要： PROBLEM TO BE SOLVED: To expand the upper frequency limit of oscillator by increasing feedback quantity by interposing an impedance transformer in the connection of feedback circuit through an irreversible distributing/synthesizing circuit. SOLUTION: An irreversible distributing/synthesizing circuit 10 distributes both the input signals of terminals 11 and 12 to terminals 13 and 14 but there is no signal transmission between the terminals 11 and 12 and between the terminals 13 and 14. An amplifier 20 connects its output terminal 22 and input terminal 21 to a loop while using the path from the terminal 11 of irreversible distributing/synthesizing circuit 10 to the terminal 13 as the feedback circuit and free oscillation is generated within the prescribed range of loop gain and phase turn. In this case, an impedance transformer 40 composed of the low impedance line of 20, for example, is inserted between the terminal 13 and the terminal 21. Thus, impedance matching at a terminal 13a is attained, the characteristics of distribution from the terminal 12 to the terminal 21 are improved, and the gain reduction of amplifier 20 at high frequency is compensated.

25. 发明专利

JPH08298460A INJECTION SYNCHRONIZATION OSCILLATOR 失效
公开(公告)号：JPH08298460A
公开(公告)日：1996-11-12
申请号：JP34998595
申请日：1995-12-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KAMOGAWA KENJI , TOKUMITSU TSUNEO
IPC分类号： H03L7/24 , H03B19/00
摘要： PURPOSE: To realize a wide frequency lock range by using a variable phase shifter so as to change a free oscillating frequency. CONSTITUTION: A signal received from a terminal 11 of a 3-terminal circulator 10 is delivered only to a terminal 12 and the signal received from the terminal 12 is delivered only to a terminal 13, and the delivery of the signal from the terminal 12 to the terminal 11 and from the terminal 13 to the terminals 11, 12 is not allowed. An oscillator 18 comprising an oscillating element 15 an a resonator 17 acts like an oscillator whose free oscillating frequency is decided by a signal of a terminal 14 reflected from the oscillator 17. An injection signal is given to the terminal 11 of the circulator 10 and the oscillator 18 is oscillated by the injection signal to change a phase amount of a variable phase shifter 16, then the free oscillation frequency is changed and a wide frequency lock range is realized even in the case of a small infection signal level.

26. 发明专利

JPH07508386A 失效
公开(公告)号：JPH07508386A
公开(公告)日：1995-09-14
申请号：JP50264194
申请日：1993-06-29
IPC分类号： H03B5/12 , H03D1/22 , H03D11/04 , H03L7/24 , H04B1/24 , H04B1/30

27. 发明专利

JPH0774737A CLOCK EXTRACT CIRCUIT AND OSCILLATION CIRCUIT 失效
公开(公告)号：JPH0774737A
公开(公告)日：1995-03-17
申请号：JP21971493
申请日：1993-09-03
申请人： OKI ELECTRIC IND CO LTD
发明人： YOSHIDA SATOSHI , TAYA TAKASHI , YAMAOKA SHINSUKE
IPC分类号： H03B5/12 , H03K3/282 , H03L7/24 , H04L7/027
摘要： PURPOSE:To obtain the oscillation circuit from which an oscillation output synchronously with a phase of a phase control signal stably and to obtain the clock extract circuit extracting stably a clock signal synchronously with the input signal. CONSTITUTION:When a phase control signal PI is fed to an input terminal 1 and a base potential of a transistor(TR) Q6 gets higher than a threshold voltage Vref, the TRQ6 is closed, a current is drawn from a point X via its collector to decrease the potential at the point X. Then the potential change in the point X decreases a potential at the point A through TRs Q1, Q4. In this case, the effect of the potential change at the point A given onto an emitter coupled multivibrator 11 depends on the oscillating phase at a point of time of potential change and the oscillation phase synchronously with the phase control signal PI is obtained by utilizing it.

28. 发明专利

JPH056361B2 失效
公开(公告)号：JPH056361B2
公开(公告)日：1993-01-26
申请号：JP27290787
申请日：1987-10-28
申请人： AARU SHII EE TOMUSON RAISENSHINGU CORP
发明人： JEEMUZU HARISON DOTEI ZA SEKANDO , UORUTAA GOORUDO GIBUSON
IPC分类号： H03B5/06 , H03B5/12 , H03K3/80 , H03L7/24

29. 发明专利

JPH0378013A ELECTROMAGNETIC FIELD COUPLED SYNCHRONIZING OSCILLATION CIRCUIT 失效
公开(公告)号：JPH0378013A
公开(公告)日：1991-04-03
申请号：JP21411989
申请日：1989-08-22
申请人： SAWADA HIROTAKE
发明人： SAWADA HIROTAKE
IPC分类号： G06F1/12 , H03L7/24
摘要： PURPOSE:To make coupling smooth when clock circuits which oscillate individually are coupled in synchronism with oscillation circuits with an induced electromagnetic field by constituting the oscillation circuits which easily synchronizes with other signals. CONSTITUTION:A master oscillator 1 and a master module 2 are coupled with a slave oscillator 3 by an electromagnetic wave. Further, slave modules 1 and 4 are coupled with a bus. Modules 2 and 6 are coupled with the master module by a bus. The slave oscillators 2 and 5 are affected the more by an electromagnetic wave generated by the master oscillator as they are the closer to the master oscillator, and then phase-synchronized wit the master oscillator.

30. 发明专利

JPH0319722B2 失效
公开(公告)号：JPH0319722B2
公开(公告)日：1991-03-15
申请号：JP19951985
申请日：1985-09-11
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： HIRAI KENJI , KIMURA TAKANORI
IPC分类号： H03B1/00 , G01S7/28 , H01P5/12 , H03B9/14 , H03L7/24

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