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91. 发明专利

JPH07255654A VACUUM CLEANER 失效
公开(公告)号：JPH07255654A
公开(公告)日：1995-10-09
申请号：JP4844894
申请日：1994-03-18
申请人： HITACHI LTD
发明人： OTA GICHU , KOGORI JUNJI , HAKOYAMA AKIYOSHI , HOSOKAWA ATSUSHI
IPC分类号： A47L9/28
摘要： PURPOSE:To provide an inexpensive controller for a vacuum cleaner that produces reference information for controlling an electric fan by applying acoustoelectric transducer for use in transmitting information signals. CONSTITUTION:An electret condenser microphone 10 having high sensitivity and wide frequency response characteristics as an acoustoelectric transducer is mounted on a control board 9. An opening 1a is formed over the top of the microphone 10, on the body case 1 to enclose the board 9. Further, a handy operation part 4 comprises a remote control board 12 on which an operation button 11 interlocking to the switch transmitting command signals of standard, weak, strong, and stop is mounted, and a battery 13. And, an ultrasonic element 14, an transducer, is attached at the grip end of a hose 3. The electric signals transmitted from the element 14 are discriminated by a processor mounted on the control board 9, and decoded into control information signals.

92. 发明专利

JPH0719576A COMMUNICATION EQUIPMENT OF AIR CONDITIONER 失效
公开(公告)号：JPH0719576A
公开(公告)日：1995-01-20
申请号：JP16534493
申请日：1993-07-05
申请人： HITACHI LTD
发明人： KATO KOJI , IIZUKA SHINICHI , INOUE TORU , OTA GICHU
IPC分类号： F24F11/02
摘要： PURPOSE:To enable reduction of the cost, simplification of wiring work and effective suppression of radiant noise by a method wherein a high-potential-side wiring is made to have a high-frequency impedance and coupling capacitors transferring signals between wirings and a control part are connected in the preceding stage ending with a coil. CONSTITUTION:In an air conditioner, a DC power source for supplying a power to an indoor machine 1 is prepared in an outdoor machine 2 by converting an AC input into a direct current and by dropping it to a DC voltage of 1/n (n>1) by a DC-DC converter 13, and communication signals for control of a compressor 12 and others are transmitted to and received from DC power output wirings connected between the indoor machine 1 and the outdoor machine 2, in high-frequency superposition. The opposite ends of the wiring on the high potential side are connected to the DC power source or a capacitor C1 through a coil L1 so that the wiring be made to have a high-frequency impedance, and coupling capacitors C2 and C3 transferring the signals between the wirings and a control part are connected in the preceding stage ending with the coil L1, thus the high frequency of the signals to be a noise source being suppressed.

93. 发明专利

JPH06337154A INFRARED RAYS SOURCE DETECTOR AND DWELLING ENVIRONMENT CONTROL DEVICE USING THE DETECTOR 失效
公开(公告)号：JPH06337154A
公开(公告)日：1994-12-06
申请号：JP12586793
申请日：1993-05-27
申请人： HITACHI LTD
发明人： FURUYA TETSUO , OTA GICHU , KAWAGUCHI YUJI
IPC分类号： F24F11/02 , G01B11/00 , G01V8/12 , G01V9/04
摘要： PURPOSE:To perform detection of the presence position of an IR rays source in a space, i.e., the direction angle and the distance, through a simple mechanism by providing a computing means to control a driving means which rotates an incident direction limiting means and compute the position of the IR rays source based on the output signal from a IR rays detecting means. CONSTITUTION:An IR rays source detector comprises an IR rays detecting means 1 to output a signal through input of IR rays; and a light collecting means 2 arranged in front of the IR rays detecting means 1 and collecting the IR rays from a specific angle range to the incident surface of the IR rays detecting means 1. At least one or two opening parts 4a and 4b in this case are formed in the vicinity of the front of the light collecting means 2 and the incident direction of IR rays to the IR rays detecting means 1 is limited by a rotatable incident direction limiting means 3. The incident direction limiting means 3 is rotated by a driving means, rotation of a driving means is controlled by a computing means, and the position of the IR rays source is computed based on the output signal from the IR rays detecting means 1.

94. 发明专利

JPH0451299A VOICE RECOGNITION CONTROLLER 失效
公开(公告)号：JPH0451299A
公开(公告)日：1992-02-19
申请号：JP15979390
申请日：1990-06-20
申请人： HITACHI LTD
发明人： FURUYA TETSUO , OTA GICHU
IPC分类号： F24F11/02 , G10L11/00 , G10L15/22
摘要： PURPOSE:To inform a user of a word or phrase to be recognized by a main body device in standard voice at the time of the recognition when the user makes a request at an optional point of time by providing a voice input means, a voice recognizing means, a control means which controls the operation of the main body device, a voice reproducing means, and a manual operation means. CONSTITUTION:The user operates a help key 5 and then an interruption signal is inputted to the interruption terminal 46 of a control part 4 through a 1st encoder 6. The control part 4 when detecting the interruption signal sends a standard voice reproduction command to a voice recognition part 3. The voice recognition part 3 when receiving the reproduction command detects the address where data on the standard voice of a word of a number on a 2nd memory 33 is recorded according to the number of the current word to be recognized. Then the data is read out in order and decoded in real time when necessary to output an analog voice signal to an amplifier 8 by the D/A conversion part of an input/output part 34, thereby outputting a voice from a speaker 9.

95. 发明专利

JPH03122442A CONTROLLER FOR AIR CONDITIONER 失效
公开(公告)号：JPH03122442A
公开(公告)日：1991-05-24
申请号：JP25696189
申请日：1989-10-03
申请人： HITACHI LTD
发明人： FURUYA TETSUO , OTA GICHU , KOBAYASHI MINORU , KATO KOJI
IPC分类号： F24F11/02
摘要： PURPOSE:To make a change-over switch select either manual control or voice- input control by itself in controlling the operation of an air conditioner so as to prevent unintended control of the operation by having the selection between manual control and voice input switched over according as a cover for control switches is open or closed. CONSTITUTION:There are provided a microphone 1 for inputting a user's voices giving operation instructions, a voice-recognizing part 3 which recognizes operation instructions inputted by means of voices and outputs the results of the recognition, a set of manual operation keys 6 for manually controlling the operation of an air conditioner, and a control part 25 which produces manual control signals. As an input for the control either the result of the recognition of voices or manual control signal is selected by using a key cover 41 for covering the manual operation keys 6 and a microswitch 9 which produces a signal indicating whether the key cover 41 is covering the manual operation keys 6 or not so that, on the basis of the controlling input, a control part 8 controls the operation of the air conditioner.

96. 发明专利

JPH02238731A ECHO CANCELLER AND COMMUNICATION EQUIPMENT PROVIDED THEREWITH 失效
公开(公告)号：JPH02238731A
公开(公告)日：1990-09-21
申请号：JP6009189
申请日：1989-03-13
申请人： HITACHI LTD
发明人： EZAKI TOMOHIRO , OTA GICHU
IPC分类号： H04B3/23 , H04M9/08
摘要： PURPOSE:To stably reproduce sound other than received voice during talking in a way of not being listened to a talking opposite party by inputting a signal other than a received sound to the reception signal input terminal of an echo canceller together with the reception signal and regenerating them from a speaker simultaneously. CONSTITUTION:A signal mixer 20 mixes a reception signal and other voice signal and inputs the resulting signal to the reception signal input terminal 1 of an echo canceller 3, then the mixed signal is sent to a speaker 2 from a speaker output terminal 15 via an amplifier 17 without any further modification and regenerated as a sound. Then the signal is inputted to a microphone 5 via an echo path and the mixing signal being again an electric signal is amplified by an amplifier 18 and inputted to the microphone input terminal 16 of the echo canceller 3. Since the echo canceller 3 cancels the mixing signal, no mixed signal is outputted from a transmission output terminal 14. Thus, a specific sound in hand-free talking is listened to and the sound is not listened to by the opposite talking party.

97. 发明专利

JPH02238730A TWO-WAY CALL DETECTION SYSTEM AND ECHO CANCELLER AND LOUDSPEAKING TELEPHONE SET USING THE SYSTEM 失效
公开(公告)号：JPH02238730A
公开(公告)日：1990-09-21
申请号：JP6009089
申请日：1989-03-13
申请人： HITACHI LTD
发明人： OTA GICHU , EZAKI TOMOHIRO
IPC分类号： H04B3/23 , G10L15/02 , G10L15/10
摘要： PURPOSE:To evade mis-detection and malfunction of an echo canceller by detecting the presence of 2-way call not by level comparison of signals but by difference from input and output signal patterns of an echo path. CONSTITUTION:A signal pattern extraction circuit 7 extracts a characteristic time series signal pattern of input and output signals of an echo path 1, a pattern matching circuit 8 calculates the distance of patterns, that is, the difference and outputs the result to a judging circuit 9. The judging circuit 9 compares a threshold level with the output signal and discriminates it to be the state of mixture of a signal other than an echo signal to an output of the echo path 1, that is, 2-way talking when the difference is over the threshold level, and outputs a 2-way talking detection signal to a terminal 3-4 of the echo canceller 3. Thus, the production of mis-detection depending on the echo level is not caused and malfunction of the echo canceller is evaded.

98. 发明专利

JPH01135160A MSK SYNCHRONIZING DEMODULATION CIRCUIT 失效
公开(公告)号：JPH01135160A
公开(公告)日：1989-05-26
申请号：JP29203187
申请日：1987-11-20
申请人： HITACHI LTD
发明人： SUDO SHIGEYUKI , OTA GICHU , TAKAHARA YASUAKI , EZAKI TOMOHIRO
IPC分类号： H04L27/14
摘要： PURPOSE:To obtain a stable reference recovery carrier phase jitter is suppressed after phase error convergence by giving a signal proportional to (-sin2thetae) as a phase error signal of a carrier synchronizing loop with respect to a voltage controlled oscillator without including an undesired component caused by modulation in the case of extracting a phase error signal. CONSTITUTION:An output of a multiplier 6 is connected to a low pass filter 23 of an inverted phase jitter generating circuit 20 and one input of an adder 29 and an output of an inverting circuit 28 of the inverted phase jitter generating circuit 20 is given to the other input of the adder 29, and an output of the adder 29 is given to a VCO 8. Moreover, a data recovery circuit 19 is provided to receive a timing signal in the relation of the result of a clock signal from a clock extraction circuit 10 by-pi/2 with respect to the output of low pass filters 3, 4 and a demodulated base band signal output terminal OB is provided to the output of the said circuit 19. Thus, the carrier phase jitter after the establishment of synchronization is suppressed.

99. 发明专利

JP2002143597A AUTOMATIC DETERGENT THROWING-IN DEVICE 失效
公开(公告)号：JP2002143597A
公开(公告)日：2002-05-21
申请号：JP2000338544
申请日：2000-11-07
申请人： HITACHI LTD
发明人： MATSUI YASUHIRO , KOIKE TOSHIFUMI , OTA GICHU , KAMANO TOSHIYASU , HIYAMA ISAO
IPC分类号： D06F39/02
摘要： PROBLEM TO BE SOLVED: To provide an automatic detergent throwing-in device wherein the constitution is simple, the reliability is high, and which is excellent in usability. SOLUTION: A throwing-in container 22 receives a powder detergent 19 from a detergent storage container 20, and throws in the powder detergent 19 from a detergent discharging port 23. Such a throwing-in container 22 is rotate-driven by one motor 25. Thus, the powder detergent is measured and thrown in.

100. 发明专利

JP2001058095A ION REMOVING MEANS AND ION REMOVING METHOD 失效
公开(公告)号：JP2001058095A
公开(公告)日：2001-03-06
申请号：JP2000217207
申请日：2000-07-13
申请人： HITACHI LTD
发明人： KOIKE TOSHIFUMI , OTA GICHU , NAGANO YOSUKE , SHIKAMORI TAMOTSU , OSUGI HIROSHI , KOYAMA TAKAMI , MIYAO AKIRA , HIYAMA ISAO
IPC分类号： D06F33/02 , D06F23/04 , D06F39/02 , D06F39/08 , D06F39/10
摘要： PROBLEM TO BE SOLVED: To provide an ion exchange means having high practicability by easily regenerating treatment of an ion exchange means. SOLUTION: This ion exchange means has a first chamber which houses an ion exchange function material 31, chambers 60a and 60c which are respectively formed on the upper side and lower side of the first chamber, a second chamber 60a which is disposed on the upper side of the chamber 60b and houses a regenerating agent 62 for the ion exchange function material 31, a feed water path stop valve which opens and closes a water feed path to feed water to the second chamber 60a, a flow passage which connects the chamber 60b on the upper side and the second chamber 60a and a check valve 60f which permits the flow from the second chamber 60a to the chamber 60b on the upper side. The flow passage is so constituted that the water flows from the chamber 60c on the lower side through the first chamber to the chamber 60b on the upper side.

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