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1. 发明专利

JPH02183300A SPEECH RECOGNITION DEVICE 失效
公开(公告)号：JPH02183300A
公开(公告)日：1990-07-17
申请号：JP338689
申请日：1989-01-10
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： HATAOKA NOBUO , NAKASHIGE AKIRA , ARITSUKA TOSHIYUKI , AMANO AKIO , ICHIKAWA HIROSHI
IPC分类号： G06F15/18 , G06N3/00 , G06N99/00 , G10L15/02 , G10L15/08 , G10L15/16
摘要： PURPOSE:To speedily and accurately estimate the contents of a word and a phrase by inputting a phoneme or syllable string and correcting its recognition error, and estimating the contents of the word or phrase of an input speech. CONSTITUTION:This device is provided with a 1st-stage neural network which inputs the phoneme or syllable string obtained by a recognition processing means 3 and corrects the influence of acoustic coupling and a recognition error depending upon the recognition processing means and a 2nd-stage neural network 63 which estimates the contents of the word, phrase, etc., of the input speech. Then the recognition error is corrected and a phoneme string or syllable string which is corrected to a certain extent is inputted to estimate the contents of the word, phrase, etc. Consequently, the contents of the word or phrase of the input speech are accurately estimated fast from the phoneme or syllable string.

2. 发明专利

JP2005031697A MICROCOMPUTER DEVICE FOR SPEECH RECOGNITION AND COMPUTER-READABLE RECORDING MEDIUM 审中-公开
公开(公告)号：JP2005031697A
公开(公告)日：2005-02-03
申请号：JP2004277234
申请日：2004-09-24
申请人： HITACHI LTD
发明人： AMANO AKIO , ODAKA TOSHIYUKI , OBUCHI YASUNARI
IPC分类号： G10L15/28 , G10L15/00 , G10L15/14
摘要： PROBLEM TO BE SOLVED: To realize speech recognition of a large vocabulary which does not need a large quantity of processing and free from a deterioration in recognition accuracy. SOLUTION: A speech analyzing means 2 analyzes a speech inputted from a speech input means 1 to output a time series of feature vectors, and a speech detecting means 3 decides a speech section. A sound collating means 4 collates the time series of feature vectors with a standard pattern for a speech basic unit stored in a standard pattern storage means 5, and a word evaluating means 6 evaluates a recognition object on the basis of the collation result. The sound collating means 4 collates respective standard patterns throughout the entire section of the feature vector time series of the input speech to find collation result for each standard pattern as a time series. The word evaluating means 6 evaluates each word on the basis of the collation result for each standard pattern obtained as the time series and information of a word dictionary 7 in which words to be recognized are described as an array of speech basic units to find a recognition result according to the evaluation result. COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JP2002318132A VOICE DIALOGUE TYPE NAVIGATION SYSTEM, MOBILE TERMINAL DEVICE AND VOICE DIALOGUE SERVER 失效
公开(公告)号：JP2002318132A
公开(公告)日：2002-10-31
申请号：JP2001123759
申请日：2001-04-23
申请人： HITACHI LTD
发明人： OTSUJI SHINYA , KUZUNUKI SOSHIRO , OKUDE MARIKO , KAMIWAKI TADASHI , MORIOKA MICHIO , AMANO AKIO , KUJIRAI TOSHIHIRO , SHIOTANI MAKOTO , NIIE MANABU
IPC分类号： G01C21/00 , B60R16/02 , G01C21/36 , G06F3/16 , G08G1/0968 , G08G1/137 , G10L13/00 , G10L15/00 , G10L15/22 , G10L15/28
摘要： PROBLEM TO BE SOLVED: To solve a problem that, when accessing information on the Internet via voice using a car-mounted terminal machine, handling is inconvenient since it depended on the contents of information providing service providers or there are various methods for voice dialogue. SOLUTION: According to the present invention, in a car navigation system, when map information, traffic information or any other requested information is needed onboard, an inquiry is made of an information providing service provider providing such information, and the system is constituted of a mobile terminal device which can input/output voice for manipulation, a communication device, an voice dialogue server which can input/output voice and data and is connected to an external device and the Internet so as to give/receive information for execution based on voice dialogue through voice recognition processing and voice synthetic processing, and one or a plurality of information providing service providers connected to the Internet for providing information such as map information or traffic information.

4. 发明专利

JP2002258882A VOICE RECOGNITION SYSTEM AND INFORMATION RECORDING MEDIUM 失效
公开(公告)号：JP2002258882A
公开(公告)日：2002-09-11
申请号：JP2001059813
申请日：2001-03-05
申请人： HITACHI LTD
发明人： WAKIZAKA SHINJI , MIYAZAKI SEIJI , AMANO AKIO
IPC分类号： G10L11/02 , G10L15/04 , G10L21/04
摘要： PROBLEM TO BE SOLVED: To provide a system capable of performing voice recognition by improving voice section detection accuracy, even in an environment in which noise level fluctuates rapidly. SOLUTION: This system has a first filtering means (2) for reducing noise component, with attention given thereto from an input signal (1), a second filtering means (3) for extracting the noise component with attention given thereto from the input signal, and a voice section detecting means (7) for detecting the voice section of the input signal, on the basis of outputs of the both filtering means. The voice section detecting means detects the voice section by comparing first signal information obtained, on the basis of the output of the first filtering means with a threshold, and a recognizing means (15) performs voice recognition in the voice section. The voice section detecting means can change a threshold for voice section detection by making the threshold follow change of a noise environment because the voice section detecting means changes the threshold according to the fluctuation of second signal information obtained, on the basis of the output of the second filtering means.

5. 发明专利

JPH09214599A SPECIFIC PARTY CALL RECEPTION METHOD AND TELEPHONE SET WITH FUNCTION OF SPECIFIC PARTY CALL RECEPTION 失效
公开(公告)号：JPH09214599A
公开(公告)日：1997-08-15
申请号：JP1965996
申请日：1996-02-06
申请人： HITACHI LTD
发明人： IZAWA MARIKO , AMANO AKIO
IPC分类号： G10L15/10 , G10L15/00 , G10L17/00 , H04M1/66 , H04M1/663 , G10L3/00
摘要： PROBLEM TO BE SOLVED: To connect a phone call from a person designated by the user and to record messages for other persons by providing a means specifying a caller and a means revising the operation depending on information relating to specified callers. SOLUTION: A specific caller call reception means 3 outputs a voice message to a caller X that a recipient Y is absent and a name of the caller X is to be informed. On the other hand, after the end of the message output, the means 3 starts voice recognition, the name informed by the caller is voice-recognized and checks whether or not the name is registered in a caller name list. When the means 3 detects hook-off of the recipient Y, the means 3 provides an output of a message to the recipient Y, telling the phone call is from the caller X, and then the recipient Y receives the call. Then the means 3 changes over switches so as to form a speech channel between the caller X and the recipient Y and the caller X and the recipient Y make transmission reception, that is, a conversation.

6. 发明专利

JPH07212478A INFORMATION ACQUISITION SUPPORTING SYSTEM 失效
公开(公告)号：JPH07212478A
公开(公告)日：1995-08-11
申请号：JP191094
申请日：1994-01-13
申请人： HITACHI LTD
发明人： AMANO AKIO
IPC分类号： H04M3/42
摘要： PURPOSE:To provide an information acquisition supporting system capable of effiently searching information suited to the request of a user from the various kinds of information services and acuqiring it at a low cost and to support the control of the various kinds of household equipments whose control becomes difficult for the user himself. CONSTITUTION:This information acquisition supporting system is constituted of a control terminal 1, a network interface 2, a household network 4, the household equipments 51-54, a DB 61 for an individual, a general purpose DB 62, a microphone 7 and a speaker 8. An information service system on a public network is efficiently accessed by utilizing the DB 61 for the individual and the general purpose DB 62 and the household equipments are controlled by using the acquired information.

7. 发明专利

JPH0756595A VOICE RECOGNITION DEVICE 失效
公开(公告)号：JPH0756595A
公开(公告)日：1995-03-03
申请号：JP20491593
申请日：1993-08-19
申请人： HITACHI LTD
发明人： ODAKA TOSHIYUKI , AMANO AKIO
IPC分类号： G10L15/10 , G10L15/28 , G10L3/00
摘要： PURPOSE:To recognize voice while coping with the varying conditions of a user's uttering and the changes in the user by controlling a collating means or a discriminating means based on the detection results of the changes in the uttering conditions and the changes in the user. CONSTITUTION:Voices, that are inputted and digitized through an input means 1, are acoustically analyzed for every constant time interval by a first analysis means 2 and the result of the analysis is outputted in a form which is suitable to a collating means 4. The means 4 performs collation between time sequential patterns and a standard pattern and outputs the score against each standard pattern. The score outputted from the means 4 is inputted to a discrimination means 5 and a candidate corresponding to a best scored standard pattern or plural higher ranking candidates are outputted as recognition results. A second analysis means 3 analyzes voices inputted through the means 1, extracts the changes in uttering conditions and the changes in uttering speeds, outputs these information and controls the means 4 and 5 based on the outputs.

8. 发明专利

JPH0713591A DEVICE AND METHOD FOR SPEECH RECOGNITION 失效
公开(公告)号：JPH0713591A
公开(公告)日：1995-01-17
申请号：JP15071293
申请日：1993-06-22
申请人： HITACHI LTD
发明人： KOKUBO HIROAKI , AMANO AKIO
IPC分类号： G10L15/06 , G10L15/10 , G10L15/20 , G10L15/22 , G10L3/00
摘要： PURPOSE:To improve the recognition performance in noisy environment even when a large vocabulary are registered by using all recognized object vocabulary which are previously recognized as objects of recognition in less noisy environment, and excluding some of the recognized vocabulary which are previously registered from objects of recognition and performing recognition in the noisy environment. CONSTITUTION:This device and method are equipped with a speech input part 101, an A/D conversion part 102 which quantizes an input speech obtained by the speech input part 101, an analysis part 103 which obtains feature components of the input speech, a standard pattern storage part 104 for feature vectors of the previously registered recognized object vocabulary a collation part 105 which recognizes the input speech by obtaining the similarity degree between the feature vectors and the feature vectors obtained by the analysis part 103, a noise state detection part 106, and a recognized object vocabulary limiting part 107 which makes the number of the recognized object vocabulary to be collated by the collation part 105 less than the number of the previously registered recognized object vocabulary. The recognized vocabulary limiting part 107 limits the recognized object vocabulary corresponding to the noise state detected by the noise detection part 106.

9. 发明专利

JPH06250902A FILE BACKUP METHOD FOR DISTRIBUTED SYSTEM 失效
公开(公告)号：JPH06250902A
公开(公告)日：1994-09-09
申请号：JP3521393
申请日：1993-02-24
申请人： HITACHI LTD
发明人： TANAKA NATSUO , AMANO AKIO
IPC分类号： G06F12/00
摘要： PURPOSE:To set frequency that backup is executed in accordance with the significance of files, to set a backup processing to be efficient and to reduce a load. CONSTITUTION:A client 10, a server 20 and a file server for backup 30 are connected through a communication network 40. A file management table 200 exists on the memory 21 of the server 20. Update counters recording the number of the update times of the files and the prescribed number of update times for executing backup in accordance with the significance of the files are set for the respective files in the file management table 200. The server 20 once stores input data from the client 10 in the management table 200 as latest information and stores in an external storage device 50. At that time, the update counter is updated, and the server 20 transmits the backup of the file to the server 30 when the number of update times coincides with the prescribed number of update times.

10. 发明专利

JPH05165487A METHOD AND DEVICE FOR OUTPUTTING VOICE 失效
公开(公告)号：JPH05165487A
公开(公告)日：1993-07-02
申请号：JP33219591
申请日：1991-12-16
申请人： HITACHI LTD
发明人： YAJIMA SHUNICHI , SUBE TADASHI , UMEZAWA KOICHI , KOKUBO HIROAKI , AMANO AKIO
IPC分类号： G10L13/00
摘要： PURPOSE:To listen to an important voice such as an alarm or the like clearly without missing it. CONSTITUTION:The voice output device to output voices in an environment equipped with a noise generating mechanism is provided with a means 100 to receive character information, voice generating means 101, 106 to generate voices corresponding to the character information received by the means 100, and noise generating mechanism control means 102, 105 to suppress noise generation due to the noise generating mechanism by controlling the noise generating mechanism while the voices are generated by the voice generating means 101, 106. When the voices are generated based on the character information, the level of noise from the noise generating mechanism is automatically lowered, and an S/N can be improved.

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