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53. 发明专利

JPS5461410A MODULATION CIRCUIT FOR FACSIMILE SIGNAL 失效
公开(公告)号：JPS5461410A
公开(公告)日：1979-05-17
申请号：JP12847277
申请日：1977-10-25
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAGUCHI MASARU , JINBOU YOSHIHIRO , SUZUKI YUTAKA
IPC分类号： H04N1/40
摘要： PURPOSE:To prevent the discontinuity in signal level, by detecting the minimum point of facsimile signal and making the polarity conversion signal inverting the polarity when the minimum value is smaller than the reference value. CONSTITUTION:The facsimile signal A is inputted to the terminal 1. The enphasis circuit 2 judges for the threshold value with the reference value from the signal A, performing weighting of the signal. The wave processing circuit 3 detects the minimum point of the singal B and when it is smaller than the reference value, forming the polarity conversion signal C inverting the polarity. Further, the circuit 3 delivers the facsimile signal D which is in agreement with the signal B for the level other tnan the time near the inversion of the polarity of the signal C and does not cause discontinuity for the level near the time of inversion. The circuits 5 and 6 perform multiolication for the carrier E and the signal D and the 7 is the output terminal. In the modulation circuit as this system, since no level is discontinuous even if the level is inverted every minimum point, no folding for the harmonics can be caused.

54. 发明专利

JPS53136424A CORRELATIVE PROCESSING SYSTEM FOR PICTURE SIGNAL 失效
公开(公告)号：JPS53136424A
公开(公告)日：1978-11-29
申请号：JP5092277
申请日：1977-05-02
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SUZUKI YUTAKA
IPC分类号： H04N1/403 , H04N1/40
摘要： PURPOSE:To regenerate excellent signals, which have no jitter and do not attenuate, by obtaining a threshold control voltage by referring to a binary output value at the sampling point which is one before the fixed sampling point and a binary output value at the corresponding sampling point which is single-scanning before it.

55. 发明专利

JPS53128920A FACSIMILE CONTROL SYSTEM 失效
公开(公告)号：JPS53128920A
公开(公告)日：1978-11-10
申请号：JP4347277
申请日：1977-04-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MATSUMOTO TAKASHI , SUZUKI YUTAKA , KAWAMURA ASAO
IPC分类号： H04N1/32
摘要： PURPOSE:To shorten the time required for control by making the transmitter transmit the i-ordered control signal and also start the detection of the control signal sent from the i-ordered parther's transmitter and then making the receiver cope with the action of the transmitter.

56. 发明专利

JPS5382117A BINARY CIRCUIT 失效
公开(公告)号：JPS5382117A
公开(公告)日：1978-07-20
申请号：JP16001276
申请日：1976-12-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SUZUKI YUTAKA , YUUKI KIYOHIRO , HORIUCHI YOSHIO , NAKAGAWA TOORU , INAGAKI HIRONARI
IPC分类号： H04N1/403 , H04N1/40
摘要： PURPOSE:To correctly binalize the signal such as facsimile signal, by obtaining the binary signal with a plurality of threshold values.

57. 发明专利

JPS52114252A AMPLITUE*PHASE MODULATION SYSTEM 失效
公开(公告)号：JPS52114252A
公开(公告)日：1977-09-24
申请号：JP3111376
申请日：1976-03-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HORIUCHI YOSHIO , SUZUKI YUTAKA
IPC分类号： H03C5/00 , H04L27/04 , H04N1/40
摘要： PURPOSE:To provide a means to reproduce the input signal in good fidelity by keepintg phase change to the ratio of 2/mu against the maximum variation of the single polartity signal, as the phases of the carrier wave is amplitude modulated against the single polarity signal like the facsimile signal which contains a meadium tone.

58. 发明专利

JPS51126023A LINE LOSS EQUALIZER 失效
公开(公告)号：JPS51126023A
公开(公告)日：1976-11-02
申请号：JP5029375
申请日：1975-04-24
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SUZUKI YUTAKA , MATSUMOTO TAKASHI , YUUKI KIYOHIRO
IPC分类号： H03H11/04 , H04B3/14
摘要： PURPOSE:To do as to be able compensate by a comparatively simple construction corresponding to exchange characteristics of the equalizer the smallest limitted parameter to decide the line loss characteristics.

59. 发明专利

JPS51124307A REPEATER POWER SUPPLY CONTROL SYSTEM 失效
公开(公告)号：JPS51124307A
公开(公告)日：1976-10-29
申请号：JP4857875
申请日：1975-04-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SUZUKI YUTAKA , MATSUMOTO TAKASHI , YUUKI KANKOU
IPC分类号： H04B1/16 , H04B3/44
摘要： PURPOSE:To control the power supply of a repeater by constrolling the repeater power supply with the ground potential of the line.

60. 发明专利

JPS5119419A 失效
公开(公告)号：JPS5119419A
公开(公告)日：1976-02-16
申请号：JP9080174
申请日：1974-08-09
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , FUJITSU LTD
发明人： KATO YASUO , SUZUKI SHINICHI , SUZUKI YUTAKA , KURITA TOMIO , KAWAI HIROYUKI
IPC分类号： H04M3/36 , H04M3/24 , H04M3/38 , H04Q3/76

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