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11. 发明专利

JPH11177421A HIGH FREQUENCY SIGNAL GENERATING DEVICE 失效
公开(公告)号：JPH11177421A
公开(公告)日：1999-07-02
申请号：JP35639797
申请日：1997-12-10
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAGUCHI AKIRA , YAMAGISHI AKIHIRO
IPC分类号： H03L7/18 , H03L7/08 , H04B1/04
摘要： PROBLEM TO BE SOLVED: To sufficiently suppress an unrequited signal and to output only the desired carrier wave to a wide band by providing two PLL loops and locking the loops in reference signals which are branched into two by means of phase difference π/2. SOLUTION: A signal source 1-1 generates a signal with a frequency Fr and it is branched by phase difference π/2 through the use of a signal distributor 2 and supplied to phase comparators 3-1 and 3-2. The signal source 1-2 generates the signal with a frequency FL0 and is branched into two by phase difference αthrough the use of a signal distributing means 8 and supplied to multipliers 7-1 and 7-2. The signal with the frequency Fr and the signal with the frequency FL0 are respectively multiplied in multipliers 7-1 and 7-2 to be synthesized by phase difference β through the use of a signal synthesizing means 9. Ns in frequency dividers 6-1 and 6-2 are made to be 2n-1 and also (α, β)=(π/2+mπ, kπ) or (mπ, π/2+kπ), where (k) and (m) are each integer and (n) is a natural number. Thus, image wave at mixing-up is suppressed, and only the desired wave is obtained.

12. 发明专利

JPH11167592A INTRA-BUILDING OBJECT POSITION INFORMATION MANAGEMENT DEVICE AND METHOD 失效
公开(公告)号：JPH11167592A
公开(公告)日：1999-06-22
申请号：JP33412397
申请日：1997-12-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAGUCHI AKIRA , TAGA TOKIO
IPC分类号： G06K19/07 , G06K17/00 , G06Q10/00 , G06Q50/00 , G06Q50/16 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To automatically obtain detailed position information on individuals and commodities. SOLUTION: Object information (ID) is inputted (21) to a transmission part 20. The ID is sent by radio (22) and received by a data carrier 10. Then the ID is stored in a storage means 12 and adhered to an object (13). A reception part 30 where the position information is inputted (31) and stored is prepared in a building with a space of several meters, for example. The ID is always transmitted as a radio signal by a transmission means 14 which is operated by a battery contained in the carrier 10. The ID received by the part 30 is sent to a management part 50 via a communication circuit 40 together with position information. The ID, the position information and the receiving time are stored in a storage means 33 as a set. Then the information on a desired object to be known is inputted via an input means 54 and retrieved from a storage means 53 to be displayed (55).

13. 发明专利

JPH114122A FREQUENCY CONVERTER 失效
公开(公告)号：JPH114122A
公开(公告)日：1999-01-06
申请号：JP15673397
申请日：1997-06-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAGUCHI AKIRA , NAKATSUGAWA SEIJI , OKAZAKI KOJI
IPC分类号： H03D7/00 , H03D7/18
摘要： PROBLEM TO BE SOLVED: To highly enhance the efficiency of an amplifier for amplifying an LO signal which restricting the second higher harmonic components of the LO signal to be inputted to a mixer. SOLUTION: The LO signal outputted from an LO signal supply means 1 is bi-branched by a first power distributor 2 in common-mode and the same amplitude so as to be respectively inputted to the two input ports of a second higher harmonic restricting means 3. In the meand 3, the LO frequency components of the LO signals are outputted in the same phase so as to restrict the second higher harmonic components of the LO signals. The common-mode LO signals outputted from the second higher harmonic restricting means 3 are inputted to mixers 4 so as to be respectively multiplied by first and second input signals.

14. 发明专利

JPH0918247A HIGH FREQUENCY AMPLIFIER DEVICE 失效
公开(公告)号：JPH0918247A
公开(公告)日：1997-01-17
申请号：JP18222795
申请日：1995-06-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAGUCHI AKIRA , NAKAGAWA TADAO , MURAGUCHI MASAHIRO
IPC分类号： H03F3/189
摘要： PURPOSE: To linearly amplify a digital signal with high efficiency for adjustment of a limited-band phase, etc., by controlling the output level of an amplifier circuit by means of an envelope signal. CONSTITUTION: The modulated wave inputted from an input terminal 9 is inputted to an amplifier means 5 and amplified there after undergoing the adjustment of its phase via a phase adjustment means 3. At the same time, the input modulated wave is also supplied to an envelope signal detection means 2 via the means 1 which detects an envelope signal out of the modulated wave and inputs it to a control voltage generation means 6. The envelope signal inputted to the means 6 is converted into a digital signal by an A/D conversion means 6a, and the output control voltage is generated by a D/A conversion means 6c via a storage means 6b and inputted to the means 5. The output control voltage is applied to a gate G of a gate-grounded FET 5c. Then the distribution of drain bias given from a DC power supply 4 of a grounded-source FET 5b and the FET 5c is changed, and the output of the means 5 is controlled according to the envelope signal. Thus the digital signal can be linearly amplified with high efficiency.

15. 发明专利

JPH08186449A FREQUENCY CONVERTER 失效
公开(公告)号：JPH08186449A
公开(公告)日：1996-07-16
申请号：JP33702194
申请日：1994-12-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAGUCHI AKIRA , NAKAGAWA TADAO , TSUKAHARA TSUNEO
IPC分类号： H03D7/00 , H03D7/18
摘要： PURPOSE: To reduce the number of circuit elements consisting of the frequency converter for simultaneously providing the suppression of local power leak and the suppression of an image frequency signal. CONSTITUTION: This device is provided with a first distributing means 112 for distributing a high frequency signal as the object of frequency conversion with the phase difference of almost γ, power distributor 100 for distributing a local signal with a prescribed phase, amplitude and phase adjusting means 102 for adjusting the amplitude and phase of one of distributed local signals, second distributing means 106 for branching the other one of distributed local signals with the phase difference of almost β, and first and second non-linear elements 108 and 110 for multiplying the respective local signals outputted from the second distributing means 106 and the respective high frequency signals outputted from the first distributing means 112. Then, a power synthesizer 104 is provided to synthesize two outputs from two non-linear elements 108 and 110 with the phase difference of almost δ and to further perform in-phase synthesization to the result with the output of the amplitude and phase adjusting means 102. Among β, γ and δ, specified relation is established according to whether converting the intermediate frequency to a radio frequency or converting the radio frequency to the intermediate frequency.

16. 发明专利

JPS62178049A GATHERING SYSTEM FOR INFORMATION ON PASSING ROUTE OF CALL 失效
公开(公告)号：JPS62178049A
公开(公告)日：1987-08-05
申请号：JP1935686
申请日：1986-01-31
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TOKUNAGA YASUSHI , YAMAGUCHI AKIRA , HONMA KATSUTOSHI , OOTA ICHIRO
IPC分类号： H04M3/42 , H04M3/22
摘要： PURPOSE:To gather automatically passing route information of a call by adding the number of each exchange and out-going and incoming line number information to an address signal set to the call to transmit the signal to succeeding stations and transferring them collectively to a passing route information storage device by a terminating exchange. CONSTITUTION:At the time of a preliminarily determined passing route information gathering object call is originated in an originating exchange 1, the originating exchange 1 adds information which indicates gathering of passing route information, the number of the originating exchange,an outgoing line number, and originating and terminating subscriber telephone numbers to the address signal and transmits information 201 to a repeating exchange 2. The repeating exchange 2 generates an address signal to a terminating exchange 2 on a basis of the received address signal and adds the number of the repeating exchange it-self and outgoing and incoming line numbers to the number of the originating exchange and outgoing line number information added to the received address signal and transmits information 202. The terminating exchange 3 adds the number of the terminating exchange itself and an incoming line number to passing route information included in the received address signal and transfers information 203 to a passing route information storage device 203 and stores it there.

17. 发明专利

JPS5399802A SPECIFIC SUBSCRIBER CALLING EQUIPMENT OF AUTOMATIC ANSWERING TELEPHONE SET 失效
公开(公告)号：JPS5399802A
公开(公告)日：1978-08-31
申请号：JP1514977
申请日：1977-02-14
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MURAO MASANORI , TANAKA TOSHIO , YAMAGUCHI AKIRA
IPC分类号： H04M1/65 , H04M1/665
摘要： PURPOSE:To make it possible to answer only specific calls by selecting many and unspecified incoming calls in addition to the normal automatic answering function, by providing an additional unit.

18. 发明专利

JPS51134892A TERMINATING METHOD OF COMMUNICATION CABLE 失效
公开(公告)号：JPS51134892A
公开(公告)日：1976-11-22
申请号：JP5856775
申请日：1975-05-19
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAGUCHI AKIRA
IPC分类号： H02G1/14
摘要： PURPOSE:Easily establishing in a short time the terminating of communication cable even by an unskilled person.

19. 发明专利

JP2002279506A AUTOMATIC VENDING MACHINE 失效
公开(公告)号：JP2002279506A
公开(公告)日：2002-09-27
申请号：JP2001083638
申请日：2001-03-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAMOTO HIDEAKI , OSUMI YOSHIKATSU , YAMAGUCHI AKIRA , SONEHARA TOSHINORI , YOKOBORI KAZUHIRO , NISHIMURA SHINJI
IPC分类号： G07F9/02 , G07F5/18 , G07F9/00
摘要： PROBLEM TO BE SOLVED: To provide an automatic vending machine capable of exhibiting an expiration date (available period) of a commodity to a purchaser. SOLUTION: A commodity selecting button 25 is provided with a depression detecting mechanism 11 and a display device 23. A storing device 3 stores the expiration date and the price of each commodity. When a user throws in predetermined money or more, the expiration date of the commodity is read out by a control part 4 from the storing device 3 and outputted to the display device 23, thereby displaying the expiration date of the commodity on the commodity selecting button 25. The control part 4 sends the expiration date of the commodity to an external management device through a communication interface 6. If the external management device detects the expiration date which is imminent from the sent data, it sends a discount command to the control part 4. The control part 4 discounts the commodity by receiving the command.

20. 发明专利

JP2001308646A DIRECT DIGITAL SYNTHESIZER 失效
公开(公告)号：JP2001308646A
公开(公告)日：2001-11-02
申请号：JP2000124077
申请日：2000-04-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： FUKUYAMA HIROYUKI , NOSAKA HIDEYUKI , YAMAGUCHI AKIRA , MURAGUCHI MASAHIRO
IPC分类号： H03H17/06 , H03B28/00
摘要： PROBLEM TO BE SOLVED: To realize a direct digital synthesizer(DDS) that outputs high frequency signals. SOLUTION: The DDS has an N bit accumulator 31 for which incrementally accumulates frequency setting data K, synchronizing with the clock fck and has a digital filter 32 which filters signals from the accumulator. Thus, high frequency sine wave signal can be output from the accumulator.

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