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61. 发明专利

JPH05340779A 失效
公开(公告)号：JPH05340779A
公开(公告)日：1993-12-21
申请号：JP15197792
申请日：1992-06-11
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： HIRAYAMA HIROSHI , IGARASHI SHINYA
IPC分类号： F02D35/00 , F02D41/18 , F02D45/00 , G01F1/68 , G01F1/684
摘要： PURPOSE:To obtain a highly accurate heating-resistance type air flow rate measuring instrument for measuring the quantity of intake air of automobile engines by reducing a measurement error caused by a change in shape of an air cleaner and duct provided on the upstream side of the instrument. CONSTITUTION:A main and auxiliary flow passages 2 and 1 are integrally formed in the body 3 of the title instrument and a heating resistance element 4 for detecting flow rate is provided in the auxiliary flow passage 1. The entrance opening 1a of the passage 1 has a plurality of grooves formed on the surface perpendicular to the flow direction of the main flow passage 2 and the groove sections have inclined bottoms and join together on the upstream side of the part 1b of the passage 1 where the heating resistor 4 is installed. Or a plurality of entrances 1a is formed by covering part of the groove-like entrances 1a. Therefore, the measurement error which occurs when the shape of the upstream-side line is changed can be reduced to 1/3 as compared with the conventional example.

62. 发明专利

JP2003097440A HERMETIC ELECTRIC COMPRESSOR 审中-公开
公开(公告)号：JP2003097440A
公开(公告)日：2003-04-03
申请号：JP2001295347
申请日：2001-09-27
申请人： HITACHI LTD
发明人： KONDO TATSUYA , SESHIMO KOJI , HIRAYAMA HIROSHI , TAGAWA SHIGETARO
IPC分类号： F04B39/00 , H02K1/14 , H02K3/38
摘要： PROBLEM TO BE SOLVED: To solve the problem that a coil crossover line, provided along the outer periphery of an insulator, for connecting respective coils directly wound in respective slots of a stator core of an electric motor via the insulator approaches a non-insulated metal part by loosening or expanding in the direction of the outer periphery of the insulator or approaches the stator core by falling perpendicularly to the direction of the outer periphery of the insulator, whereby an insulation distance cannot be maintained. SOLUTION: A part or a plurality of parts of the outer periphery of the insulator where the insulation distance is short or cannot be maintained or the entire outer periphery of the insulator is formed with a shelf or a wall and a groove along the outer periphery of the insulator.

63. 发明专利

JP2003097439A HERMETIC ELECTRIC COMPRESSOR 审中-公开
公开(公告)号：JP2003097439A
公开(公告)日：2003-04-03
申请号：JP2001295348
申请日：2001-09-27
申请人： HITACHI LTD
发明人： HIRAYAMA HIROSHI , SESHIMO KOJI , KONDO TATSUYA , TAGAWA SHIGETARO
IPC分类号： F04B39/00 , H02K1/14 , H02K3/38
摘要： PROBLEM TO BE SOLVED: To solve the problem that a lead wire typically drawn clockwise or counterclockwise when viewed from a lead wire fixing part becomes long, thus causing an increase in material cost. SOLUTION: The lead wire is drawn in two directions, that is, clockwise and counterclockwise when viewed from the lead wire fixing part, and a terminal fixing part is disposed so that the lead wire drawn becomes short.

64. 发明专利

JP2002325410A PERMANENT MAGNET TYPE DYNAMO-ELECTRIC MACHINE AND COMPRESSOR USING THE SAME 失效
公开(公告)号：JP2002325410A
公开(公告)日：2002-11-08
申请号：JP2001130573
申请日：2001-04-27
申请人： HITACHI LTD
发明人： WAKUI SHINICHI , OHARAGI HARUO , TAKAHATA RYOICHI , KIKUCHI SATOSHI , TAKAHASHI MIYOSHI , HIRAYAMA HIROSHI , SESHIMO KOJI , KAWAMINAMI SHIGEYA , SENOO MASAHARU , NOMA KEIJI
IPC分类号： F04B39/00 , F04C18/02 , F04C29/00 , H02K1/12 , H02K1/14 , H02K1/16 , H02K1/27 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet type dynamo-electric machine which is low in noises and a compressor using it. SOLUTION: The permanent magnet type dynamo-electric machine has a stator 5, on which an armature winding in a concentrated winding is executed so as to surround a plurality of teeth 8 formed to a stator core, and a rotor 1, in which permanent magnets 2 are housed in a plurality of permanent-magnet inserting holes formed to the rotor core 3. Arcuate sections and linear sections are formed to the teeth inner circumferential surfaces of the stator core, with 3.7

65. 发明专利

JP2002140868A METHOD FOR GENERATING DIGITAL SIGNAL AND DISK RECORDING MEDIUM 失效
公开(公告)号：JP2002140868A
公开(公告)日：2002-05-17
申请号：JP2000334822
申请日：2000-11-01
申请人： HITACHI LTD
发明人： HIRAYAMA HIROSHI
IPC分类号： G11B20/12 , G11B7/0045 , G11B7/007 , G11B20/10 , G11B20/18 , G11C29/00 , H03M13/00
摘要： PROBLEM TO BE SOLVED: To generated a digital signal which has improved error correction ability without requiring encoding of an error-correcting code(ECC) or changing in the number of codes, and to record the digital signal on a disk recording medium with high density. SOLUTION: In respect of series of recording information, a plurality of sector data are constituted by adding address information showing a position on the recording medium to a fixed recording information quantity at least, and continuous (k1×2) (k1 is a positive integer) sector data are divided into ((i) bytes×2 columns)×(j) rows ((i) and (j) are positive integers). In respect of each of two arrays of (i) bytes×(j×k1) rows, k2 bytes of a first correcting code are generated in respect of the sequence of a code length for (j×k1) bytes and next, (q) bytes ((q) is a positive integer) of a second correcting code are generated in respect of the sequence of a code length for (i) bytes including the first correcting code so that the first and second correction arrays for (i+q) bytes×(j×k1+k2) rows can be constituted.

66. 发明专利

JP2002061526A HEATING RESISTANCE TYPE AIR FLOW RATE MEASURING DEVICE 审中-公开
公开(公告)号：JP2002061526A
公开(公告)日：2002-02-28
申请号：JP2001200288
申请日：2001-07-02
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： IGARASHI SHINYA , KOBAYASHI CHIHIRO , HIRAYAMA HIROSHI , SAITO TAKAYUKI , ARAI NOBUKATSU
IPC分类号： G01F1/68 , F02D35/00 , F02M69/48 , G01F1/684
摘要： PROBLEM TO BE SOLVED: To provide a heating resistance type air flow rate measuring device which is reduced in a cost of an internal combustion engine and excellent in mountable property. SOLUTION: An auxiliary air passage is integrally formed at a part of a module and all functions necessary to the heating resistance type air flow rate measuring device are all given to a module alone. Thus, the module of one kind of a heat generation resistance type air flow rate measuring device can be mounted on an engine, and when a cost containing the system cost of the internal combustion engine exceeds, reduction can be effected. Further, the device can be also mounted on, for example, the air cleaner of a suction system and the heating resistance type air flow meter being excellent in mounting ability can be provided.

67. 发明专利

JP2002044608A INFORMATION RECORDING/REPRODUCING APPARATUS, METHOD FOR RECORDING AND METHOD FOR REPRODUCING 失效
公开(公告)号：JP2002044608A
公开(公告)日：2002-02-08
申请号：JP2000231387
申请日：2000-07-27
申请人： HITACHI LTD
发明人： HIRAYAMA HIROSHI
IPC分类号： H04N5/765 , G11B7/0045 , G11B20/10 , G11B20/12 , H04N5/781 , H04N5/92
摘要： PROBLEM TO BE SOLVED: To display picture quality of picture information before reproducing information including the picture information recorded in a recording medium. SOLUTION: An information recording/reproducing apparatus comprises a receiving means for processing to demodulate at least a reception signal and extracting program information for an object packet, a recording/ reproducing means for recording and reproducing information for the recording means, a decoding means for processing to decode picture and voice information multiplexed by the program information, and a control means for controlling the above means. In this recording reproducing apparatus, the control means detects an effectively demodulating process at least in the receiving means, specifies the picture quality of the program information, in response to the detection of its switching or detects its change and records information indicating it in the medium.

68. 发明专利

JP2001236743A INFORMATION RECORDING/REPRODUCING DEVICE AND, RECORDING METHOD, REPRODUCING METHOD, INFORMATION RECORDING MEDIUM 失效
公开(公告)号：JP2001236743A
公开(公告)日：2001-08-31
申请号：JP2000050451
申请日：2000-02-22
申请人： HITACHI LTD
发明人： HIRAYAMA HIROSHI
IPC分类号： G11B20/10 , G11B7/004 , G11B20/12 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To record, reproduce information for which a transfer rate is considered important and information for which reproducing reliability is considered important on the same disk recording medium. SOLUTION: An information recording and reproducing device is constituted for selectively performing respectively first recording processing for recording the information while skipping for at least a primary fault area for first information and second recording processing for skipping for at least the primary fault area for second information and for deciding a secondary fault area by reproducing just after the information is recorded, and for recording the information by re-recording the information incorporated in the secondary fault area to an alternate area, when the first information requesting recording and reproducing of the information of a certain data amount for a fixed period and the second information requesting the reproducing reliability of recording information for the recording medium are recorded on the disk recording medium.

69. 发明专利

JP2001067818A METHOD FOR RECORDING DIGITAL SIGNAL, AND APPARATUS THEREFOR, RECORDING MEDIUM 失效
公开(公告)号：JP2001067818A
公开(公告)日：2001-03-16
申请号：JP24693199
申请日：1999-09-01
申请人： HITACHI LTD
发明人： HIRAYAMA HIROSHI
IPC分类号： G11B20/14 , H03M13/29
摘要： PROBLEM TO BE SOLVED: To realize a recording method whereby digital signals with an error- correcting efficiency improved are recorded to recording media by a high density, and a high compatibility is provided to process digital signals when the signals are reproduced. SOLUTION: A first array of (i) bytes ×(j) rows is collected by k×n2 (n2 is an integer of 2i and (i)=0, 1, 2, 3,...). A first correcting code of k×n2 bytes is generated for a sequence of a code length of j×k×n2 bytes. A second array of (i) bytes × (j×k×n2+k×2n) rows is formed. A second correcting code of (q) bytes is generated for a sequence of a code length of (i) bytes in the second array. At least a third array of (i+q) bytes × (j×k×n2+k×n2) rows is formed. Modulation and adding a synchronous signal are sequentially carried out from a leading row of the array. Digital signals thus generated are reduced to 1/n1 and recorded as record marks on tracks of a recording medium.

70. 发明专利

JP2001006298A DIGITAL SIGNAL PROCESSING CIRCUIT AND DISK REPRODUCING DEVICE 失效
公开(公告)号：JP2001006298A
公开(公告)日：2001-01-12
申请号：JP17628399
申请日：1999-06-23
申请人： HITACHI LTD
发明人： HIRAYAMA HIROSHI
IPC分类号： G11B20/14 , G11B20/10 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To make block data for the decoded data coincide with block data on a memory by providing a protective window therefor when a block top decode for the decode data is performed erroneously. SOLUTION: The protective window performing a generation and protection of block top timing of an erroneously generated block top decode result is generated by a protective window generation circuit 10. The protective window is set in an open state before generating a transfer control signal to be in a search state for the block top decode result. A block top decision circuit 11 decides the timing as block top timing when the block top decode result is obtained in a protective window open state. The window generation circuit 10 closes the protective window according to the block top timing, and opens the window when a prescribed count value becomes an open sector setting value or above to search again the block top decode result.

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