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1. 发明专利

JPH01132982A CORRELATIVE PROCESSING 失效
公开(公告)号：JPH01132982A
公开(公告)日：1989-05-25
申请号：JP28934287
申请日：1987-11-18
申请人： HITACHI LTD , HITACHI CONTROL SYST
发明人： KATO KATSUYASU , YAMADA TOSHIAKI
IPC分类号： G01S13/66 , G01S13/93
摘要： PURPOSE:To enable accurate correlation without increasing processing time and CPU load by a method wherein all objects are not correlatively identified, but only object data within a specific zone are correlatively identified. CONSTITUTION:Tracking processors 2A-2C carry out tracking processing using observation data by sensors 1A-1C, and output tracking data is correlated in a data processing system 3. An area to be observed in which objects are expected is pre-divided into a plural number of zones, and object data in a zone are chained by a pointer. An object data in a specific zone is accessed via an index installed corresponding to each zone, and a range for identifying proximity or correlation between the objects is determined. For example, when there are 100 areas to be observed, the range to be correlated can be limited to 9/100 (approx. 0.1%).

2. 发明专利

JPS6432600A ACOUSTIC SIMULATOR 失效
公开(公告)号：JPS6432600A
公开(公告)日：1989-02-02
申请号：JP18789787
申请日：1987-07-28
申请人： HITACHI LTD , HITACHI CONTROL SYST
发明人： YAMADA TOSHIAKI , NISHIKAWA SATOSHI , SAKAI KUNIZO , KODAIRA TAKATOSHI
IPC分类号： H04R3/00 , H04R29/00
摘要： PURPOSE:To reproduce a simulated sound at plural listener positions with simple constitution and higher fidelity by correcting a simulated sound by one simulated sound generating means by an arrival delay time with the relative position from the sound source and a propagation attenuation data. CONSTITUTION:A sound generation simulating section 1 generates a sound from one sound source and stores it in a propagation delay memory 2 as a digital waveform. In this case, the sound pressure level written at first and the sound pressure level written in the next address are stored at a time difference by the sampling period. The simulated sound at the listener position is corrected by calculating a distance by a relative position calculation section 31 at first, calculating the delay time from the sound velocity and calculating the extraction address from the sampling period. The sound pressure level is read out of the relevant address of the memory 2, the attenuation level obtained from a propagation loss calculation section 5 is multiplied and an analog signal is reproduced from the data conversion section 61.

3. 发明专利

JPH07210650A METHOD FOR SETTING TOPOGRAPHIC ELEMENT CORRESPONDING TO DISPLAY REDUCTION RATE 失效
公开(公告)号：JPH07210650A
公开(公告)日：1995-08-11
申请号：JP670294
申请日：1994-01-26
申请人： HITACHI LTD , HITACHI INF & CONTROL SYST
发明人： ONO HIDE , YAMADA TOSHIAKI , MATSUMOTO AKIHIRO
IPC分类号： G06T11/60 , G06T1/00
摘要： PURPOSE:To provide the method for setting topographic elements corresponding to the display reduction rate which considerably reduces the memory capacity for graphic data of a building or the like and continuously changes the reduction rate of a display graphic pattern and prevents paint-out of the graphic pattern due to reduction. CONSTITUTION:Plural graphic patterns 2 different by display reduction rates are set for each graphic, and constituting points of the graphic patterns of the display reduction rate before switching are thinned to reduce the display graphic in the case of reduction, and constituting points thinned at the time of reduction are reproduced and are connected to the graphic pattern 2 of the next display reduction rate in the case of expansion of the graphic pattern 2 displayed at present. Paint-out of the display graphic is detected to connect the constituting points to the graphic pattern 2 of the next display reduction rate or the graphic pattern 2 of the closest display reduction rate. When the display reduction rate reaches a prescribed value, the graphic pattern 2 is switched to a symbol or the symbol is erased or both of the graphic pattern 2 and the symbol are displayed.

4. 发明专利

JPH0715441A THROUGHPUT SHAPING DEVICE, EXCHANGE SYSTEM, AND THROUGHPUT SHAPING METHOD 失效
公开(公告)号：JPH0715441A
公开(公告)日：1995-01-17
申请号：JP3155494
申请日：1994-03-01
申请人： HITACHI LTD
发明人： KOTOI YASUHARU , YAMADA TOSHIAKI , OGINUMA YASUO
IPC分类号： H04Q11/04 , H04L12/28 , H04L12/801 , H04L12/815 , H04L12/863 , H04L12/911 , H04L12/56
摘要： PURPOSE:To apply the method to a high speed broad band system by latching packets in the order of input and shifting a packet whose transmission is discriminated to be disable based on an upper limit of a throughput to a tail end of the latched packets. CONSTITUTION:The shaping device is provided with a circulation section 1 to circulate packets to await a packet, a transmission selection section 2 selecting a packet to be sent among input packets and circulated packets, an input order number management section 3, an output order number management section 4 and a number of times management section 5. When a packet is received by the circulation section 1, the input order number management section 3 makes input packet arrival processing latch received packets in the order of the arrival. Furthermore, the transmission selection processing section 2 discriminates whether or not the packet is a packet to be sent based on the upper limit of the throughput and shifts the packet to the tail end of the latched packets to await the transmission of the packet discriminated not to be sent.

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