专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US3536157A Underwater sound sources 失效
标题翻译：水下声源
公开(公告)号：US3536157A
公开(公告)日：1970-10-27
申请号：US3536157D
申请日：1969-01-03
申请人： SEISMOGRAPH SERVICE CORP
发明人： ANSTEY NIGEL ALLISTER
IPC分类号： B63B45/08 , G01V1/133 , G10K10/00
CPC分类号： G01V1/133 , B63B45/08 , Y02A90/36
摘要： 1,258,562. Marine sound source. SEISMOGRAPH SERVICE (ENGLAND) Ltd. 3 Jan., 1969 [3 Jan., 1968], No. 388/68. Heading H4D. A sound source 3 for generating underwater acoustic pulses comprises an open-ended pipe which is moved through the water and which is provided at at least its leading end with a velocity transformer 7 so that water entering the velocity transformer flows along the pipe at a speed, relative to the pipe, which is greater than the speed of the source through the water, and further comprises cut-off means 5 for suddenly interrupting the flow of water along the pipe to produce an acoustic pulse by the " water-hammer " effect. One or more sources may be attached to a depressor 2 or to a pontoon for towing behind survey vessel 1, or the sources may be built into or fixed to the survey vessel. Velocity transformers 7, 8 are conical or exponentially tapered funnels. The cut-off means 5 is remotely controlled electrically, hydraulically or pneumatically from vessel 1 and may take the form of (a) a pair of apertured plates, one of which is moved to cover the apertures in the other, (b) a valve of the flapper or butterfly type, whose closure may be assisted by the water flow, or (c) a device for injecting high pressure air into the pipe against the water flow. If the pipe is rigid, closure of the cut-off means 5 results in a pressure pulse travelling back along pipe section 4 and a rarefaction pulse travelling along pipe section 6. Funnel 7 then acts as an acoustic horn for radiating the pressure pulse without unwanted reflection in the funnel. The rarefaction pulse may be broadened and attenuated by using a pipe section 6 and funnel 8 of appropriate dimensions and design, or it may be allowed to interfere with the pressure pulse from funnel 7 to give the sound source a directional characteristic. If the pipe is made compliant the acoustic radiation will be mainly from the pipe instead of from the funnels 7, 8. To this end the pipe may be constructed as (a) a perforated steel tube with an elastomeric outer sheath (e.g. of synthetic rubber), or (b) a tube of rubber reinforced by, e.g., a helical wire. The pipe compliance may be varied along the pipe (being lowest at the leading end) by varying the sizes and spacings of the perforations in construction (a) or by varying the pitch of the helix in construction (b). In a modified source for reducing inertial mechanical stress in the source and towing system when the water flow is stopped by the cut-off means 5, the pipe is provided with two opposed inlet branches such that the water flow directions in the two branches are respectively in and against the direction of travel of the source.

2. 发明授权

US3519925A Methods of and apparatus for the correlation of time variables and for the filtering,analysis and synthesis of waveforms 失效
标题翻译：方法与装置关联时间变量和滤波，分析和合成波形
公开(公告)号：US3519925A
公开(公告)日：1970-07-07
申请号：US3519925D
申请日：1962-11-06
申请人： SEISMOGRAPH SERVICE CORP
发明人： ANSTEY NIGEL ALLISTER , LERWILL WILLIAM EDWARD
IPC分类号： G01V1/36 , G06G7/19 , G10L19/02 , G01R23/16 , G06F15/34
CPC分类号： G06G7/1914 , G01V1/364 , G01V1/366 , G01V2210/32 , G10L19/02
摘要： 1,054,242. Correlation techniques. SEISMOGRAPH SERVICE (ENGLAND) Ltd. Nov.8, 1962, No.35266/66. Divided out of 1, 054, 241. Heading G1U. An apparatus for the filtering or transmission of a waveform comprises a first correlator for effecting cross correlation of the waveform against a reference waveform and a second correlator for cross correlating the output of the first correlator with a time inverted version of the same reference waveform. The correlators described in Specification 1, 054, 241 may be used for carrying out the required correlations. The present double correlating arrangement may be employed to improve the filtering technique described therein. To ensure that the output derived by the filtering correlator explained therein from a non periodic filter is directly significant it is fed to a recording head in a second correlator with a correlating head of the same form as that used in the first correlator, but reversed in time. This second head may also have shorting links and resistors so that two frequency selective actions are cascaded, the entire filtering action being achieved with zero phase distortion. Two such correlating heads may be incorporated in a single disc arrangement. Fig. 7 (not shown). The double correlating arrangement may also be used for the transmission and resynthesis of speech by coded phonemes, the derivation of which is discussed in Specification 1, 054, 241. The coded phonemes can be transmitted by signals of narrow bandwidth over submarine cables or satellite communication links and can be restored to normal speech by means of a correlator including reference heads which are the time inverse of the heads which produce the coded phonemes. These heads are used as recording heads to which the coded pulses corresponding to phonemes are applied. The recording heads lay down on the recording drum or disc a pattern which develops in a conventional play back head a voltage whose time variation duplicates the original speech.

3. 发明授权

US3459929A Methods of and apparatus for the correlation of variables 失效
标题翻译：用于变量相关的方法和装置
公开(公告)号：US3459929A
公开(公告)日：1969-08-05
申请号：US3459929D
申请日：1965-04-21
申请人： SEISMOGRAPH SERVICE CORP
发明人： LERWILL WILLIAM EDWARD , ANSTEY NIGEL ALLISTER
IPC分类号： G01V1/36 , G06G7/19 , G06F15/34
CPC分类号： G06G7/1914 , G01V1/366

4. 发明授权

US3496529A Methods and apparatus for identifying or attenuating undesired multiple reflections in a seismic wave record 失效
标题翻译：用于识别或降低地震波记录中未完成多次反射的方法和装置
公开(公告)号：US3496529A
公开(公告)日：1970-02-17
申请号：US3496529D
申请日：1967-06-14
申请人： SEISMOGRAPH SERVICE CORP
发明人： ANSTEY NIGEL ALLISTER , NEWMAN PAUL
IPC分类号： G01V1/36 , G01V1/00 , G06F15/34 , G06G7/19
CPC分类号： G01V1/366 , G01V2210/56

5. 发明授权

US3459931A Methods of and apparatus for the correlation of two variables 失效
标题翻译：用于两个变量相关的方法和装置
公开(公告)号：US3459931A
公开(公告)日：1969-08-05
申请号：US3459931D
申请日：1967-12-27
申请人： SEISMOGRAPH SERVICE CORP
发明人： LERWILL WILLIAM EDWARD , ANSTEY NIGEL ALLISTER
IPC分类号： G01S7/35 , G01V1/36 , G01V1/37 , G06G7/19 , G06F15/34
CPC分类号： G01V1/375 , G01S7/352 , G01V1/366 , G01V2210/30 , G06G7/1914 , G06G7/1928
摘要： 1,054,242. Correlation techniques. SEISMOGRAPH SERVICE (ENGLAND) Ltd. Nov.8, 1962, No.35266/66. Divided out of 1, 054, 241. Heading G1U. An apparatus for the filtering or transmission of a waveform comprises a first correlator for effecting cross correlation of the waveform against a reference waveform and a second correlator for cross correlating the output of the first correlator with a time inverted version of the same reference waveform. The correlators described in Specification 1, 054, 241 may be used for carrying out the required correlations. The present double correlating arrangement may be employed to improve the filtering technique described therein. To ensure that the output derived by the filtering correlator explained therein from a non periodic filter is directly significant it is fed to a recording head in a second correlator with a correlating head of the same form as that used in the first correlator, but reversed in time. This second head may also have shorting links and resistors so that two frequency selective actions are cascaded, the entire filtering action being achieved with zero phase distortion. Two such correlating heads may be incorporated in a single disc arrangement. Fig. 7 (not shown). The double correlating arrangement may also be used for the transmission and resynthesis of speech by coded phonemes, the derivation of which is discussed in Specification 1, 054, 241. The coded phonemes can be transmitted by signals of narrow bandwidth over submarine cables or satellite communication links and can be restored to normal speech by means of a correlator including reference heads which are the time inverse of the heads which produce the coded phonemes. These heads are used as recording heads to which the coded pulses corresponding to phonemes are applied. The recording heads lay down on the recording drum or disc a pattern which develops in a conventional play back head a voltage whose time variation duplicates the original speech.

6. 发明授权

US3459930A Methods and apparatus for the correlation of two variables 失效
标题翻译：两种变量相关的方法和装置
公开(公告)号：US3459930A
公开(公告)日：1969-08-05
申请号：US3459930D
申请日：1966-02-10
申请人： SEISMOGRAPH SERVICE CORP
发明人： LERWILL WILLIAM E , ANSTEY NIGEL ALLISTER
IPC分类号： G01S7/35 , G01V1/36 , G01V1/37 , G06G7/19 , G06F15/34
CPC分类号： G01V1/375 , G01S7/352 , G01V1/366 , G01V2210/30 , G06G7/1914 , G06G7/1928
摘要： 1,054,242. Correlation techniques. SEISMOGRAPH SERVICE (ENGLAND) Ltd. Nov.8, 1962, No.35266/66. Divided out of 1, 054, 241. Heading G1U. An apparatus for the filtering or transmission of a waveform comprises a first correlator for effecting cross correlation of the waveform against a reference waveform and a second correlator for cross correlating the output of the first correlator with a time inverted version of the same reference waveform. The correlators described in Specification 1, 054, 241 may be used for carrying out the required correlations. The present double correlating arrangement may be employed to improve the filtering technique described therein. To ensure that the output derived by the filtering correlator explained therein from a non periodic filter is directly significant it is fed to a recording head in a second correlator with a correlating head of the same form as that used in the first correlator, but reversed in time. This second head may also have shorting links and resistors so that two frequency selective actions are cascaded, the entire filtering action being achieved with zero phase distortion. Two such correlating heads may be incorporated in a single disc arrangement. Fig. 7 (not shown). The double correlating arrangement may also be used for the transmission and resynthesis of speech by coded phonemes, the derivation of which is discussed in Specification 1, 054, 241. The coded phonemes can be transmitted by signals of narrow bandwidth over submarine cables or satellite communication links and can be restored to normal speech by means of a correlator including reference heads which are the time inverse of the heads which produce the coded phonemes. These heads are used as recording heads to which the coded pulses corresponding to phonemes are applied. The recording heads lay down on the recording drum or disc a pattern which develops in a conventional play back head a voltage whose time variation duplicates the original speech.

7. 发明授权

US3459928A Correlation of variables not previously known 失效
标题翻译：相对于以前没有知道的变量的相关性
公开(公告)号：US3459928A
公开(公告)日：1969-08-05
申请号：US3459928D
申请日：1964-09-15
申请人： SEISMOGRAPH SERVICE CORP
发明人： LERWILL WILLIAM EDWARD , ANSTEY NIGEL ALLISTER
IPC分类号： G06G7/19 , G06F15/34
CPC分类号： G06G7/1914

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式