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1. 发明专利

JPH08304525A RADIO TELEPHONE DEVICE 失效
公开(公告)号：JPH08304525A
公开(公告)日：1996-11-22
申请号：JP11083295
申请日：1995-05-09
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOBAYASHI HIDEYUKI , MIZUDORI YASUO , TATE KAZUYUKI , TANDA TAKESHI
IPC分类号： G01S5/14 , H04W64/00 , H04Q7/34
摘要： PURPOSE: To provide a radio telephone device for accurately detecting the position where it is located as a point within a radio zone not as a radio zone unit. CONSTITUTION: A radio reception part 16b receives a radio wave from each radio base station(BS) and at the same time measures the level of the reception voltage of the radio wave for each BS. A storage part 16c keeps a radio base station name, an area name which the BS is responsible for, and the station information of BS (X and Y coordinates) for each BS. A comparison part 16d is provided with a propagation distance calculation means and obtains a distance to PS.16 from BS based on a specific numeric expression according to the received voltage of the radio wave which the radio reception part 16b received and the transmission output of BS receiving the radio wave. Further, a comparison part 16d obtains a circle where a calculated distance is a radius for at least three BS's and sets the cross point of the arc of a circle as the current position of PS.16.

2. 发明专利

JPH08274866A TELEPHONE SYSTEM 失效
公开(公告)号：JPH08274866A
公开(公告)日：1996-10-18
申请号：JP7486895
申请日：1995-03-31
申请人： TOSHIBA CORP , NIPPON TELEGRAPH & TELEPHONE
发明人： MATSUZAKI NOBUO , TATE KAZUYUKI
IPC分类号： H04M1/24 , H04B3/23 , H04M1/58
摘要： PURPOSE: To optimally execute the training of an echo canceller. CONSTITUTION: This telephone system is provided with a conversion means 8 for performing two-wire/four-wire conversion and the echo canceller (EC) 6 for obtaining pseudo echo signals (Sc) for eliminating echo signals (Se) sneaking from a transmission side line (Ls) on a four-wire side i-jato a reception side line (Lr) from signals from the Ls, supplying them to the Lr and eliminating them. The EC 6 obtains training signals (St) from a training signal generation means 3 through the Ls at the time of the training (TR), uses them and the Se from the Lr and performs control for setting the level of the Sc. Then, it is constituted of a detection means 10 for detecting the presence/absence of audible signals (S) supplied from an exchange and a control means 12 for acquiring a connection line with the exchange at the time of executing the TR, originating one of the plural kinds of dial numbers (Nn) set beforehand, executing the TR at the time of detecting the absence of the S, originating the different one of the plural kinds of the Dn after acquiring the line after controlling the cut-off of the line when the S is present and performing the control for executing the TR at the time of the absence of the S until the end of the TR.

3. 发明专利

JPH08274689A VOICE COMMUNICATION EQUIPMENT PROVIDED WITH ACOUSTIC ECHO CANCELLER 失效
公开(公告)号：JPH08274689A
公开(公告)日：1996-10-18
申请号：JP7486995
申请日：1995-03-31
申请人： TOSHIBA CORP , NIPPON TELEGRAPH & TELEPHONE
发明人： MATSUZAKI NOBUO , ANDO MASAYUKI , TATE KAZUYUKI
IPC分类号： H04M1/60 , H04B3/23
摘要： PURPOSE: To effectively absorb the time difference between the input timing of a reception signal to an acoustic echo canceller and the input timing of the acoustic echo without complicated signal processing neither a large-scale constitution. CONSTITUTION: A delay circuit 443 is provided in the reception signal input line to an adaptive filter 441 in an acoustic echo canceller 44. The reception signal is inputted to the adaptive filter 441 after being delayed by the time corresponding to the total value D1+D2 where D1 is a first transmission delay extent generated in the reception signal path passing a radio channel from an adaptive difference PCM transcoder 41 of a master machine BS to a speaker SP of a slave machine PS and D2 is a second transmission delay extent generated in the transmission signal path passing a radio channel from a microphone MIC of the slave machine PS to an acoustic echo canceller 44 of the master machine BS.

4. 发明专利

JPH08116570A RADIO COMMUNICATION EQUIPMENT AND RADIO COMMUNICATION SYSTEM 失效
公开(公告)号：JPH08116570A
公开(公告)日：1996-05-07
申请号：JP25329094
申请日：1994-10-19
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE , NEC CORP , OKI ELECTRIC IND CO LTD
发明人： MURATA ICHIRO , TATE KAZUYUKI , SHIMURA YUKIHIRO , NAKAZATO REIKO
IPC分类号： H04B1/38 , H04B7/24 , H04W8/22 , H04Q7/38
摘要： PURPOSE: To omit an undesired operation and to improve the convenience of use in the case of communication between slave sets by informing the operating state of one slave set among plural slave sets to other slave sets through a base station and allowing the slave set receiving the notice to display it to its display section. CONSTITUTION: A reception section 201 of a base station 101 receives data from an antenna 112, a data analysis section 202 decodes the data and stores the received state as each slave set information to a storage section 203. Then the information is sent to each slave set from a transmission section 204. A reception section 302 of a slave set 104 receives the information by an antenna 112, an analysis section 303 analyzes it to discriminate a number of the slave set, a state of the slave set and whether or not the slave set is available. Each slave set informs a state change to a control section 309 and a transmission section 301 sends it to the base station through a control channel. When the user desires to observe the information, the user operates a key 305 to make a display request, then the key information is decoded by an operation section 306 and each slave set information is read from the storage section 304 and a display control section 307 displays slave set information to a display section 308.

5. 发明专利

JPH06326779A DIGITAL CORDLESS TELEPHONE DEVICE 失效
公开(公告)号：JPH06326779A
公开(公告)日：1994-11-25
申请号：JP11071093
申请日：1993-05-12
申请人： TOSHIBA CORP , NIPPON TELEGRAPH & TELEPHONE
发明人： FUSE SHOJI , MONMA KOJI , TATE KAZUYUKI
IPC分类号： H04W76/02 , H04B7/26 , H04M3/56 , H04W72/04 , H04W84/10
摘要： PURPOSE:To obtain the digital cordless telephone set which is so improved as to increase the number of mobile stations that can participate in a conference communication although the number of time slots in one frame is same. CONSTITUTION:A base station and a mobile station set one time slot as a transmission slot respectively and also set other plural time slots as reception slots. The base station and mobile station temporarily store speech data of the reception slots in a memory 105 during communication and an adding circuit 104 adds the speech data stored in the memory 105 and outputs them to the speaker of the mobile station or a public telephone line 101 connected to the base station. Consequently, the number of the mobile stations which can participate in the conference communication can be increased up to (n-1) provided that the number of time slots in one frame is (n).

6. 发明专利

JPH06268567A CLOCK INFORMATION NOTICE SYSTEM 失效
公开(公告)号：JPH06268567A
公开(公告)日：1994-09-22
申请号：JP5172493
申请日：1993-03-12
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE , NEC CORP , HITACHI LTD
发明人： SAWADA AKIHIRO , FURUYA NORIYASU , TATE KAZUYUKI , NAGASHIMA NORIAKI , KOJIMA JUNICHI
IPC分类号： H04B7/26 , H04W4/06 , H04W28/00 , H04W88/02
摘要： PURPOSE:To eliminate the need for the use to make setting and adjustment of clock information by keeping accuracy of clock information unified at each mobile terminal equipment in response to the small sized and light weight of a mobile terminal equipment. CONSTITUTION:An equipment at a base station side incorporates a clock circuit generating clock information and each mobile terminal equipment does not incorporate any clock circuit. Then the equipment at the V' base station side sends simultaneously the clock information counted by a built-in clock circuit to each mobile terminal equipment at a predetermined period through a predetermined control channel (100-102). Each mobile terminal equipment monitors the arrival of a signal from a base station side equipment and adjusts the clock information managed by itself when the clock information inserted in a control channel is received to be received clock information (112-115). The clock information is subject to, e.g. display processing at the mobile terminal equipment.

7. 发明专利

JPH0388553A CONFERENCE DEVICE 失效
公开(公告)号：JPH0388553A
公开(公告)日：1991-04-12
申请号：JP22311289
申请日：1989-08-31
申请人： NIPPON TELEGRAPH & TELEPHONE , TOMEI TSUSHIN KOGYO KK
发明人： TAKAGI YUKIMASA , IHI NORIOMI , TATE KAZUYUKI , UESHIMA NOBUHIRO , INAGAKI TETSUHIRO
IPC分类号： H04M3/56
摘要： PURPOSE:To execute the three-person communication service by establishing a communication circuit between a telephone set and a terminal irrespective of an outgoing and an incoming, and switching this communication circuit to a circuit of the other telephone set and the terminal. CONSTITUTION:After confirming a dial tone by a telephone set TEL1, an outgoing and an incoming are connected to a terminal EP1. Subsequently, an incoming is called through an electric communication equipment EE2 from a terminal EP2, and when a telephone circuit between the telephone set TEL1 and the terminal EP1 is connected, when a telephone circuit between switches is connected so that the terminal EP1 is connected to a telephone set TEL2, a switch SW1 is operated so that the terminal EP1 is connected to the telephone set TEL2. When an incoming display is executed by an incoming detection display part RING, a switch SWA is operated so that the telephone set TEL1 is connected to the electric communication equipment EE2 side. By said operation, telephone circuits between the telephone set TEL2 and the terminals EP1, EP2 are connected, and a three-person conference is executed.

8. 发明专利

JPS6238037A MOBILE RADIO EQUIPMENT 失效
公开(公告)号：JPS6238037A
公开(公告)日：1987-02-19
申请号：JP17729685
申请日：1985-08-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： OOTA YUJI , MURATA YOSHITOSHI , TATE KAZUYUKI
IPC分类号： H04B7/26 , H04M1/00
摘要： PURPOSE:To evade the same channel interference to be generated while plural stations sends signals at the same time by allowing a radio equipment sending a connection control signal to opposed radio equipment to detect a signal of a transmission control channel so as to control the use of the control channel. CONSTITUTION:A reception section 20 is provided with a receiver 21 receiving a signal sent from a station of different kind from the own station and a receiver 23 receiving a signal sent from a station of the same kind as the own station. The communication from connection devices A, B to radiotelephone set C, D is executed by using a control channel having a frequency f1 and plural talking channels having near the frequency f1 and the communication from the radio telephone sets C, D to the connection devices A, B is executed through the control channel having a frequency f2 and plural talking channels having near the frequency f2. When a detection circuit 25 of the radiotelephone set C detects a signal from the other station, a control section 30 sends a busy tone to inhibit a call signal of the radiotelephone set C thereby avoiding collision with the other station.

9. 发明专利

JPH08336181A DIGITAL CORDLESS TELEPHONE SYSTEM 失效
公开(公告)号：JPH08336181A
公开(公告)日：1996-12-17
申请号：JP13977495
申请日：1995-06-07
申请人： NEC CORP , NIPPON TELEGRAPH & TELEPHONE , HITACHI LTD , OKI ELECTRIC IND CO LTD
发明人： GOTOU MASATAKA , TATE KAZUYUKI , OGAWA YOICHI , KATO TETSUYA
IPC分类号： H04M1/00 , H04M1/247 , H04M1/56 , H04M1/57 , H04M1/725 , H04Q7/38
摘要： PURPOSE: To display the function contents that a slave machine responding to an incoming call has to a calling side before a speech. CONSTITUTION: The master machine control part 11 of a master machine 1 controls the radio communication between plural slave machines 2-1 to 2-3 via a radio part 12 and an antenna 13, collects the function contents that each slave machine 2-1 to 2-3 has at the time of installation, and registers and preserves the contents in a slave machine function registration part 14. When the master machine control part 11 receives an incoming call from a calling side slave machine 4 through a line 100 and a calling side master machine 3, the function contents of the slave machines 2-1 to 2-3 for which off-hook is performed is read from the slave machine function registration part 14 and transmits the contents to the slave machine of the calling side slave machine 4 through the line 100 and the calling side master machine 3. The calling side control part 41 of the calling side slave machine 4 displays the function contents of the slave machines 2-1 to 2-3 transmitted from the master machine control part 11 on a display part 44.

10. 发明专利

JPH08256373A RADIO CONTROL SIGNAL TRANSMISSION SYSTEM, BASE STATION AND MOBILE STATION 失效
公开(公告)号：JPH08256373A
公开(公告)日：1996-10-01
申请号：JP5887595
申请日：1995-03-17
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE , NEC CORP , OKI ELECTRIC IND CO LTD
发明人： KUROKI YOSHINORI , TATE KAZUYUKI , NAGASHIMA NORIAKI , SAWADA AKIHIRO
IPC分类号： H04M1/725 , H04W72/04 , H04Q7/36 , H04Q7/38
摘要： PURPOSE: To prevent the interference of a control radio wave between base stations automatically with respect to base stations in a private digital radio communication system wired-connected to an electric communication line installation. CONSTITUTION: Base stations BS1-3 monitor an available control frequency and a radio wave state of a slot in advance when the control radio wave is sent to mobile stations PS1-3. In the monitor of the base stations BS, a request of monitor command publication is made to a control radio wave state monitor command section 2 when a power supply ON detection section 4 detects power ON and an incoming call disable state detection section A1 detects the unarrival of an incoming call or at each prescribed time set by a routine timer A2 or by their combinations to start a radio wave state monitor section 1. Then the radio wave state monitor section 1 selects a radio wave not in use among monitor radio waves and starts transmission and uses the set control radio wave till a succeeding radio wave state is monitored.

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