专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2005191762A Wireless communication apparatus 审中-公开
标题翻译：无线通信设备
公开(公告)号：JP2005191762A
公开(公告)日：2005-07-14
申请号：JP2003428608
申请日：2003-12-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ADACHI SATOSHI , NODA MASAKI , TAMARU KENJI
IPC分类号： H04B1/40 , H04B1/04
摘要： PROBLEM TO BE SOLVED: To provide a wireless communication apparatus the power consumption of which is reduced while maintaining a suitable state without receiving an affect on the reception characteristic depending on a radio wave environment in a wireless communication system. SOLUTION: In the wireless communication system wherein first and second wireless communication apparatuses carry out wireless communication, a first discrimination circuit 15 which discriminates reception power received by a reception circuit 12 in the first wireless communication apparatus 10, and a second discrimination circuit 141 provided to a signal processing section 14 in the first wireless communication apparatus 10 discriminate the quality of the received signal, a transmission power control request generating circuit 143 generates a transmission power control request for controlling the transmission power of the second wireless communication apparatus on the basis of results of the discrimination, and the first wireless communication apparatus 10 superimposes the transmission power control request on a signal to be transmitted to the second wireless communication apparatus and transmits the superimposed signal to the second wireless communication apparatus. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种无线通信设备，其功率消耗在保持适当状态的同时被减少，而不会根据无线通信系统中的无线电波环境接收对接收特性的影响。解决方案：在第一和第二无线通信装置进行无线通信的无线通信系统中，判别由第一无线通信装置10中的接收电路12接收的接收功率的第一判别电路15以及第二判定电路提供给第一无线通信装置10中的信号处理部分14的判别装置10鉴别接收信号的质量，发送功率控制请求生成电路143生成用于控制第二无线通信装置的发送功率的发送功率控制请求判断结果的基础，第一无线通信装置10将发送功率控制请求叠加到要发送的信号到第二无线通信装置，并将叠加信号发送到第二无线通信装置。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2001103405A DIGITAL BROADCAST RECEIVER, DISPLAY DEVICE WITH BUILT-IN RECEIVER, DEMULTIPLEXER AND RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JP2001103405A
公开(公告)日：2001-04-13
申请号：JP27336299
申请日：1999-09-27
申请人： HITACHI LTD
发明人： SUGIYAMA YOSHIICHI , NODA MASAKI , AKIYAMA MORIYOSHI , ADACHI SATOSHI , WADA KENJI
IPC分类号： H04N5/44 , H04N5/76 , H04N7/08 , H04N7/081 , H04N7/20 , H04N19/00 , H04N19/423 , H04N19/44 , H04N19/65 , H04N19/70 , H04N19/89 , H04N21/435 , H04N21/4385 , H04N21/647
摘要： PROBLEM TO BE SOLVED: To select a program, whose viewing is requested and to reproduce the program by recording a plurality of TSs that are time division multiplexed by a TMCC to a recording and reproducing device. SOLUTION: The presence of TMCC is discriminated from signals consisting of a plurality of TSs and when the TMCC is included, a program to be outputted is specified through the appropriate processing.

3. 发明专利

JPH10304276A RECEIVER FOR DIGITAL SATELLITE BROADCAST 失效
公开(公告)号：JPH10304276A
公开(公告)日：1998-11-13
申请号：JP10855897
申请日：1997-04-25
申请人： HITACHI LTD
发明人： NODA MASAKI , ADACHI SATOSHI , YOKOUCHI KATSUMASA
IPC分类号： H04N5/455 , H04H20/00 , H04H20/74 , H04L27/22 , H04N7/20 , H04H1/00
摘要： PROBLEM TO BE SOLVED: To make a front end compact by selecting either a demodulation and error correcting means corresponding to QPSK modulation or a demodulation and error correction means corresponding to 8PSK modulation, and outputting a demodulated signal and a clock regeneration signal. SOLUTION: An I signal and a Q signal which are outputs of an orthogonal detection means 12 are converted by an A/D converter 26, and carrier reproduction is performed by a digital demodulator 27 in common use for QPSK/8PSK and clock reproduction is performed by a clock regeneration means 29. Error correction or de-interleaving of the demodulated output is performed by an FEC means 28 in common use for QPSK/8PSK, and an error-corrected demodulated output 118 and a clock signal 119 are outputted. An AGC voltage is inputted to the control terminal of a detection means 12 for controlling the amplitude of the I signal and the Q signal being the output of the orthogonal detection means 12. The QPSK and 8PSK demodulation or error correction is selected and processed by the demodulating means 27 and the FEC means 28 according to the result of a modulation system decision means 33 or the information of a modulation system included in the demodulated output.

4. 发明专利

JPH09307600A 90× PHASE SHIFTER, ORTHOGONAL DETECTOR AND RECEIVER 失效
公开(公告)号：JPH09307600A
公开(公告)日：1997-11-28
申请号：JP11599396
申请日：1996-05-10
申请人： HITACHI LTD
发明人： NODA MASAKI , YAMAMOTO AKIO , ADACHI SATOSHI
IPC分类号： H03D3/06 , H03H7/18 , H04L27/227
摘要： PROBLEM TO BE SOLVED: To make the orthogonal detector suitable for circuit integration with immunity to a parasitic component of components even at a high frequency by giving each output signal from two phase shifters to each amplifier whose output amplitude is identical to each other and using a vector synthesis means to synthesize the outputs of the amplifiers. SOLUTION: A phase shifter 11 is a 45 deg. lead phase shifter and a phase shifter 12 is a 45 deg. lag phase shifter, but actually the 45 deg. phase lead/lag is an approximate value close to 45 deg. because of the effect of a parasitic component of shifter components. An output of an oscillator 10 whose output frequency is equal to a carrier frequency of a digital modulation wave is given to the phase shifters 11, 12, where the output receives nearly 45 deg. phase lead/lag, then the signals are given to amplifiers 33, 34, in which they are amplified so as to have the identical amplitude to each other as the outputs. The amplifiers 13, 14 are, e.g. limiter amplifiers whose output amplitude is limited. The outputs from the amplifiers 13, 14 are given respectively to vector synthesizers 15, 16, in which they are synthesized in terms of vectors. Outputs 100, 101 of the synthesizers 15, 16 have a phase difference of 90 deg. (e.g. a phase of the terminal 101 is led relatively by 90 deg. than the phase of the terminal 101, that is taken as a reference phase (0 deg.)).

5. 发明专利

JPH09178407A ELECTROSTATIC CAPACITY TYPE DISPLACEMENT DETECTOR 失效
公开(公告)号：JPH09178407A
公开(公告)日：1997-07-11
申请号：JP35020495
申请日：1995-12-22
申请人： MITUTOYO CORP , HITACHI LTD
发明人： ADACHI SATOSHI , YAKU TORU , HAGINO MAKI
IPC分类号： G01B7/00 , G01B7/02 , G01D5/24
摘要： PROBLEM TO BE SOLVED: To perform stable sampling with low consumption power and greatly improve noise resistance performance. SOLUTION: A sampling control circuit 3 used for sampling a sensor output signal output from an electrostatic capacity type sensor 1 with a demodulation circuit 2 is provided with a delay lock loop(DLL) circuit 41. The DLL circuit 41 delays a system clock signal CK with n-stage variable delay circuits 421-42n and phase-synchronizes a delay clock signal CK' with the system clock signal CK. A one-stage variable delay circuit 46 to which delay control identical with that of the variable delay circuits 421-42n is applied is provided outside a loop for the DLL circuit 41. By giving a short delay time at the variable delay circuit 46 as a sampling time for the demodulation circuit 2, sampling is completed before affected by sampling noise due to outside noise.

6. 发明专利

JPH07135615A DIGITAL SIGNAL DEMODULATOR 失效
公开(公告)号：JPH07135615A
公开(公告)日：1995-05-23
申请号：JP27943193
申请日：1993-11-09
申请人： HITACHI LTD
发明人： ADACHI SATOSHI , YAMAMOTO AKIO , NODA MASAKI
IPC分类号： H04N5/455
摘要： PURPOSE:To allow the demodulator to track sufficiently carrier frequency fluctuation and to avoid a pseudo synchronization state. CONSTITUTION:A synchronization detection circuit 10 applies synchronization detection to an intermediate frequency signal based on a carrier signal. An error correction circuit 15 in a data recovery circuit 14 outputs a pseudo synchronization detection signal representing whether or not the state is the pseudo synchronization state. An error detection circuit 20 outputs an AFC signal used to control the oscillated frequency of a local oscillation circuit 8 and outputs a synchronization detection signal representing whether or not the state is the synchronization state. An adder 21 superimposes a sweep signal on the AFC signal. A switch circuit 25 controls the pseudo synchronization detection signal based on the synchronization detection signal delayed by a delay circuit 26. A switch circuit 24 stops superimposition only when the synchronization detection signal indicates the synchronization state and the pseudo synchronization detection signal indicates the state not in the pseudo synchronization state.

7. 发明专利

JPH06291787A DIGITAL SIGNAL DEMODULATOR 失效
公开(公告)号：JPH06291787A
公开(公告)日：1994-10-18
申请号：JP7928393
申请日：1993-04-06
申请人： HITACHI LTD
发明人： ADACHI SATOSHI , YAMAMOTO AKIO , NODA MASAKI
IPC分类号： H04L27/14 , H04L27/22
摘要： PURPOSE:To prevent deterioration in an error ratio of a reproduced signal by providing the digital signal demodulator enabling stable demodulation to be executed when a signal subjected to digital modulation by the modulation system such as MSK modulation is received. CONSTITUTION:A received RF signal is frequency-converted by mixer circuits 2, 7 and the result passes through an IF filter 9, synchronization detection circuits 11, 12 applies synchronization detection to the resulting signal, it is amplified and reproduced by a data reproduction circuit 17. An error detection circuit 20 detects a deviation between a frequency of a synchronization detection use oscillation circuit 13 and a center frequency of the IF filter 9 to apply AFC to a local oscillator 8 and PLL is applied to the synchronization detection oscillation circuit 13 via a phase inversion circuit 23.

8. 发明专利

JP2012034379A Radio unit and radio device 审中-公开
标题翻译：无线电设备和无线电设备
公开(公告)号：JP2012034379A
公开(公告)日：2012-02-16
申请号：JP2011191289
申请日：2011-09-02
申请人： Hitachi Cable Ltd , Hitachi Ltd , Hitachi Media Electoronics Co Ltd , 日立電線株式会社 , 株式会社日立メディアエレクトロニクス , 株式会社日立製作所
发明人： ADACHI SATOSHI , KATAGISHI MAKOTO , MURATA IKUO , IWAMURA MASUMI , TAKEI TAKESHI , SUGIYAMA TAKEHIRO , SHIRAKAWA YOHEI
IPC分类号： H04B1/18 , H01Q1/24 , H01Q9/14
摘要： PROBLEM TO BE SOLVED: To provide a radio unit and a radio device which allow an antenna and a transmitter circuit or/and a receiver circuit to be positioned with a distance therebetween.SOLUTION: In the radio unit, an antenna 103A and a transmitter circuit or/and a receiver circuit 104A are connected to each other through a coaxial cable 20. The antenna includes a transmission line 11 and a variable capacitance diode 13B. One end of the variable capacitance diode is electrically earthed to ground, and the other end of the variable capacitance diode is connected to one end of the coaxial cable through the transmission line. The transmitter circuit or/and the receiver circuit include a circuit that supplies a direct reverse voltage to the other end of the coaxial cable. The antenna is subjected to resonance frequency control according to a capacitance value of the variable capacitance diode controlled by the direct reverse voltage.
摘要翻译：要解决的问题：提供一种无线电单元和无线电设备，其允许天线和发射机电路或/和接收机电路定位在它们之间的距离。解决方案：在无线电单元中，天线103A和发射机电路或/和接收机电路104A通过同轴电缆20彼此连接。天线包括传输线11和可变电容二极管13B。可变电容二极管的一端电接地，而可变电容二极管的另一端通过传输线连接到同轴电缆的一端。发射机电路或/和接收机电路包括向同轴电缆的另一端提供直接反向电压的电路。根据由直接反向电压控制的可变电容二极管的电容值对天线进行谐振频率控制。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2005202713A Visitor management system and method 审中-公开
标题翻译：访客管理系统与方法
公开(公告)号：JP2005202713A
公开(公告)日：2005-07-28
申请号：JP2004008706
申请日：2004-01-16
申请人： Hitachi High-Technologies Corp , Hitachi Ltd , 株式会社日立ハイテクノロジーズ , 株式会社日立製作所
发明人： ADACHI SATOSHI , NAKANO NORIHIKO , ONO SAERO , MUKAI KOJIRO , IKUI HIROSHI
IPC分类号： G07G1/00 , G06K17/00 , G06Q10/00 , G06Q30/02 , G06Q30/06 , G06Q50/00 , G06Q50/10 , G07G1/01 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To determine customers' preferences and provide services matching the customers' preferences by recording the customers' behavioral histories in a store and purchases. SOLUTION: A radio tag is attached to a point card 1 issued by a store to a customer to provide means of customer identification, and a plurality of readers 21 to 23 for detecting the position of the radio tag are installed in the store. A cash register 3 detects the customer's purchases. The readers 21 to 23, the cash register 3 and a storage device 4 are connected so that every customer's movement information and purchase information are automatically accumulated in the storage device 4. A control apparatus 5 with a display monitor can be connected to the storage device 4 to read out every customer's in-store movement history and purchase information by a store side operation. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过将客户的行为历史记录在商店和购买中来确定客户的偏好并提供符合客户偏好的服务。解决方案：将无线电标签附加到由商店发给客户的点卡1以提供客户识别的方式，并且用于检测无线电标签的位置的多个读取器21至23安装在商店中。收银机3检测客户的购买。读取器21至23，收银机3和存储装置4被连接，使得每个客户的运动信息和购买信息被自动地积累在存储装置4中。具有显示监视器的控制装置5可以连接到存储装置 4读取每个客户的店内运动历史，并通过店面操作购买信息。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2004356921A Radio communication equipment 审中-公开
标题翻译：无线电通信设备
公开(公告)号：JP2004356921A
公开(公告)日：2004-12-16
申请号：JP2003151788
申请日：2003-05-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ADACHI SATOSHI , NODA MASAKI , TAMIZU KAZUHIDE
IPC分类号： H04B1/04 , H04B1/16 , H04B1/40 , H04B7/26 , H04J11/00 , H04W4/00 , H04W52/04 , H04W52/08 , H04W84/12
CPC分类号： Y02D70/00 , Y02D70/40 , Y02D70/449
摘要： PROBLEM TO BE SOLVED: To solve a problem that when a reception power value deviates from an appropriate value, degradation in reception characteristics arises both in the cases that the reception power value is too high and that it is too low in radio communication equipment.
SOLUTION: The control of the gain of a reception circuit on the basis of the result of the determination of the quality of a reception signal in a signal processing circuit, and the control of the transmission power of a transmission circuit and of the gain of the reception circuit by using a transmission power control signal included in the reception signal are performed collectively. By performing the controls, the optimum operation of the transmission power of a radio communication system and reception characteristics in demodulating the reception signal is obtained. Furthermore, as the result of the optimum operation, the power consumption of the entire radio communication equipment is reduced by avoiding the excessive consumption of power consumed in the reception circuit, power consumed in the signal processing circuit, and power consumed in the transmission circuit.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题为了解决当接收功率值偏离适当值时，在接收功率值太高而在无线电通信中太低的情况下，接收特性的降低设备。解决方案：根据确定信号处理电路中的接收信号的质量的结果以及发送电路的发送功率的控制和对发送电路的发送功率的控制，控制接收电路的增益集体地进行使用包含在接收信号中的发送功率控制信号的接收电路的增益。通过执行控制，获得无线电通信系统的发送功率的最佳操作和解调接收信号的接收特性。此外，作为最佳操作的结果，通过避免在接收电路中消耗的功率的过度消耗，信号处理电路中消耗的功率和发送电路中消耗的功率来减少整个无线电通信设备的功耗。版权所有（C）2005，JPO＆NCIPI

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式