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1. 发明专利

JPS5612171A SETTING SYSTEM FOR DECISION LEVEL OF FACSIMILE PICTURE SIGNAL 失效
公开(公告)号：JPS5612171A
公开(公告)日：1981-02-06
申请号：JP8745679
申请日：1979-07-12
申请人： NIPPON TELEGRAPH & TELEPHONE , TAMURA ELECTRIC WORKS LTD , OKI ELECTRIC IND CO LTD
发明人： KISHI YUUICHI , KATAOKA NORIO , TAGUCHI AKIO , SHIMIZU HARUMITSU , IZUMI GOROU
IPC分类号： H04N1/00 , H04N1/403
摘要： PURPOSE:To allow the best decision level to be held at any time by eliminating variation in decision ratio due to fluctuations of temperature, variation of the quantity of reflected light from an original surface, etc., by making it possible to fix the decision level in accordance with a picture signal component all the time. CONSTITUTION:The output of image sensor IS is amplified by amplifier A and then supplied to comparator CP, but also supplied to the 1st and 2nd holding circuits HD1 and HD2, in which its peak level is held by capacitors C1 and C2 through resistances R1 and R2 and the peak detecting circuit consisting of diodes D1 and D2 and capacitors C1 and C2 and sent out from buffer ammplifiers A3 and A4 as holding outputs LHP and LHB.

2. 发明专利

JPS55119640A AUTOMATIC PAPER FEEDER 失效
公开(公告)号：JPS55119640A
公开(公告)日：1980-09-13
申请号：JP2442179
申请日：1979-03-05
申请人： NIPPON TELEGRAPH & TELEPHONE , TAMURA ELECTRIC WORKS LTD , OKI ELECTRIC IND CO LTD
发明人： TAKAHASHI SHIYUUICHI , TANAKA YOSHIHARU , SHIMIZU HARUMITSU , IZUMI GOROU
IPC分类号： G03B27/00 , B65H3/52 , B65H7/20 , G03G15/00
摘要： PURPOSE:To feed paper securely by a method wherein the first and the second rollers are rotated in paper feed sense when a paper detector does not detect the presence of paper near the paper delivery side of the rollers, and the second roller is rotated in the opposite sense when the presence of paper is detected. CONSTITUTION:A predetermined number of sheets of paper out of paper sheet stack 4 are guided by a guide member 15 and inserted between a main roller 7 and an auxiliary roller 11. When paper detection result is negative, the roller 11 is rotated in sense b, so that the paper sheets are inserted smoothly between the rollers 7 and 11. When the tip end of the paper sheets reaches a detection position Q, the paper detection result turns positive, and the roller 11 is rotated reversely. As a result, the uppermost sheet in contact with the roller 11 is urged backward, while the lowermost sheet in contact with the roller 7 is fed forward. The sheets in the middle layer are fed backward sequentially, those nearer to the roller 11 being fed earlier. Thus, the paper sheets are delivered one by one, starting from the lowermost one in contact with the roller 7.

3. 发明专利

JPS5465418A KEYED AGC CIRCUIT 失效
公开(公告)号：JPS5465418A
公开(公告)日：1979-05-26
申请号：JP13223377
申请日：1977-11-04
申请人： NIPPON TELEGRAPH & TELEPHONE , TAMURA ELECTRIC WORKS LTD , OKI ELECTRIC IND CO LTD
发明人： FURUYA SHIYOUGO , MOCHIZUKI NAOHISA , SHIMIZU HARUMITSU , FUDANOTSUJI TAKUO , IZUMI GOROU
IPC分类号： H04B1/16 , H03G3/00 , H03G3/20 , H04N1/407
摘要： PURPOSE:To prevent the deterioration the received picture quality caused by the noise piled on the phase signal by generating the pulse synchronized with the guard signal in the facsimile receiver or the like and then setting the AGC control voltage with every frame. CONSTITUTION:Pulse signal generator circuit 6 which delivers synchronized pulse signal Gd is provided at the front edge of guard signal G which is produced in synchronization with phase signal f. Then the smoothing capacitor, which is holding the AGC control voltage within AGC control part 3, is discharged by signal Gd. After this, the phase signal is charged to the smoothing capacitor only while the guard signal is being generated. As a result, the AGC control voltage can be set with every frame.

4. 发明专利

JPS5447509A SIGNAL EXTRACTING SYSTEM 失效
公开(公告)号：JPS5447509A
公开(公告)日：1979-04-14
申请号：JP11333277
申请日：1977-09-22
申请人： OKI ELECTRIC IND CO LTD , TAMURA ELECTRIC WORKS LTD
发明人： TANAKA TOSHIHIRO , OKUTSU KAZUHIKO , WATANABE MAKIO , IZUMI GOROU
IPC分类号： H04N1/32 , H04B1/06 , H04L27/00 , H04N1/40
摘要： PURPOSE:To prevent the malfunction caused by the detouring signal, by inhibiting the output of the analog filter for the facsimile or the like for the period during which from transmission start of the transmission signal to the transient answer end of the analog filter after completion. CONSTITUTION:Phase signal (a) sent from transmission part 2 of transmission system T is transmitted to the telephone circuit from control part 10 via hybrid 1. Phase matching end signal (b) sent from the partner side is piled on signal (a) through circuit 1 and supplied to analog filter 3 of reception system R to extract signal (b). In this case, signal (d) is deliverd due to the effect of signal (a) and sliced via comparator 8 to be turned to signal (e) which is suppled to counter 9. In this instant, signal (f) is supplied to counter 9. In this instant, signal (f) is supplied to counter 9 from circuit 10 to inhibit the counting action then. Counter 9 delivers overflow signal (g) when the counting reaches the prescribed value.

5. 发明专利

JPS55134574A PICTURE SIGNAL PROCESSING CIRCUIT 失效
公开(公告)号：JPS55134574A
公开(公告)日：1980-10-20
申请号：JP4099879
申请日：1979-04-06
申请人： OKI ELECTRIC IND CO LTD
发明人： IZUMI GOROU , YANAGISAWA YOSHIKAZU
IPC分类号： H04N1/403
摘要： PURPOSE:To obtain a picture signal with fidelity to an original by simple constitution by converting the picture signals into two levels, black and white by logical treatment, after quantizing the signal by comparing with adequate voltage-dividing levels. CONSTITUTION:Picture signal Vi inputted to terminal 10 is compared by comparators 16 and 15 with reference voltages VPH and VPL obtained by dividing peak equivalent voltage Vp of the picture signal by resistances 12-14; when picture signal Vi is equal to or greater than the reference voltage, logic ''1'' is outputted and when less, logic ''0'' is sent out. The output of comparator 16 is stored in FF20 and, at the same time, AND-ed with the output of comparator 15 by AND circuit 18 via inverter 17 to store the result in FF19. Then, the outputs of comparator 16, circuit 18, FF19 and FF20 are logically processed by the logic circuit consisting of AND circuits 21 and 22, and OR circuit 23 to obtain a two-level state according to the level shift in the one-sample period of the picture signal. The output of circuit 23 is stored in FF24 in the one-sample period according to sample signal 26 and the Q output of FF24 is outputted from terminal 25 in the form of a black-and-white two-level signal.

6. 发明专利

JPS5571352A PICTURE SIGNAL PROCESSING CIRCUIT 失效
公开(公告)号：JPS5571352A
公开(公告)日：1980-05-29
申请号：JP14428778
申请日：1978-11-24
申请人： OKI ELECTRIC IND CO LTD
发明人： IZUMI GOROU , YANAGISAWA YOSHIKAZU
IPC分类号： H04N1/403 , H04N1/40
摘要： PURPOSE:To process picture signals with a high precision even in case of fluctuation of white and black levels by detecting change quantities of black and white levels of picture signals outputted from a photoelectric converter circuit and converting small-contrast picture signals to high-precision black-and-white binary signals. CONSTITUTION:The peak voltage of picture signals from a photoelectric converter circuit which are supplied to terminal 11 is detected by peak hold circuit 14, and the output is applied to reference voltage generating circuits 15 and 16 dependent upon voltage dividing resistances. Meanwhile, the change quantity in the amplitude direction corresponding to difference components between inputted picture signals and signals obtained by delaying them by delay circuit 12 is detected by operational amplifier 13. The change quantity from amplifier 13 is compared with the reference voltage and the polarity-inverted voltage of the reference voltage, which are generated by voltage generating circuits 15 and 16, by white-and-black binary set signal generating circuits 17-19. Further, the change quantity from amplifier 13 is integrated by integrator circuit 20 and is compared by white-and-black binary set signal generating circuits 21-22, and outputs of circuits 17-22 are applied to bistable multivibrator 25 to output high-precision black-and-white binary signals.

7. 发明专利

JPS5465404A IDENTIFYING CIRCUIT FOR DIALLIN PULSE SIGNAL AND CALLING SIGNAL OF TELEPHONE SET 失效
公开(公告)号：JPS5465404A
公开(公告)日：1979-05-26
申请号：JP13223277
申请日：1977-11-04
申请人： NIPPON TELEGRAPH & TELEPHONE , TAMURA ELECTRIC WORKS LTD , OKI ELECTRIC IND CO LTD
发明人： OKUTSU KAZUHIKO , KATAOKA NORIO , SHIMIZU HARUMITSU , INAGAKI HIRONARI , IZUMI GOROU
IPC分类号： H04M1/00 , H04M1/64 , H04M11/00 , H04M11/06
摘要： PURPOSE:To prevent the malfunction of the facsimile device or the like through identification between the calling signal and the dial-in pulse by monitoring the frequency and the time of the input signal via the timer circuit. CONSTITUTION:The input signals of the dial-in pulse and calling signal are supplied to pulse formation circuit 2 via half-wave rectifier circuit 1. The pulse is delivered with every period of the input signal. With his pulse, the frequency of the input signal is monitored through timer circuit 3, and the continuous transmission time of the input signal is monitored through timer circuit 4 based on the monitor output. As a result, an identification becomes possible between the supplied dial-in pulse of a high or low frequency and the calling signal.

8. 发明专利

JPS5858416A ULTRASONIC MEASURING DEVICE FOR VELOCITY OF FLOW 失效
公开(公告)号：JPS5858416A
公开(公告)日：1983-04-07
申请号：JP15787081
申请日：1981-10-03
申请人： OKI ELECTRIC IND CO LTD
发明人： IZUMI GOROU , HAYAKAWA HISAMI
IPC分类号： G01P5/00 , G01F1/66
摘要： PURPOSE:To eliminate errors in measurement with respect to the change in velocity of flow with time and to measure always the accurate velocity of flow continuously by making common use of one set of wave transmitter and receivers in plural sing-around systems and transmitting and receiving the ultrasonic wave pulses in the flow direction of fluid and in the direction opposite therefrom simultaneously. CONSTITUTION:The pulse signals of frequencies f1 and f2 are transmitted through respective hybrid transformers HYB to wave transmitters and receivers 41a and 41b. After the dignal f1 is converted to ultrasonic wave pulses with the transmitter and receiver 41a, the pulses are transmitted to the transmitter and receiver 41b. Similarly the signal f2 is transmitted to the transmitter and receiver 41a after conversion. The pulses received in the transmitter and receivers 41b and 41a are converted to electric signals which are transmitted through the respective HYBs to sing-around systems 20 and 30. The signal f1 is transmitted through a BPF22, an amplifier 23, a detector 24 and a waveform shaping circuit 25 to a signal transmitter 21 and a counter circuit 44 to count up the circuit 44 by one. The signal f2 counts up the circuit 45 similarly. The respective count values are subtracted by repetition of such operations for a prescribed time, whereby the velocity of flow of fluid 10 is determined.

9. 发明专利

JPS5612240A AUTOMATIC PAPER FEEDER 失效
公开(公告)号：JPS5612240A
公开(公告)日：1981-02-06
申请号：JP8745579
申请日：1979-07-12
申请人： NIPPON TELEGRAPH & TELEPHONE , TAMURA ELECTRIC WORKS LTD , OKI ELECTRIC IND CO LTD
发明人： TAKAHASHI SHIYUUICHI , TANAKA YOSHIHARU , SHIMIZU HARUMITSU , IZUMI GOROU
IPC分类号： B65H3/52
摘要： PURPOSE:To surely perform a paper feed operation, by providing the first and second rollers and rotating the second roller only in the reverse direction when a fed paper is detected by a paper detecting means. CONSTITUTION:An automatic paper feeder for the facsimile equipment comprises a paper detecting means that detects a paper fed out from between the first and second rollers 24, 25, and said means is performed at a detection position Q at the side of paper feed near the compression part of the rollers 24 and 25. When the end of a fed paper group reaches the position Q, an ON-state of paper detection is obtained to rotate the roller 25 in the reverse direction. Though said roller 25 keeps a state of reverse rotation as far as the ON-state of paper detection is continued, because the roller 24 is always rotated in the forward direction, the paper group inserted into between the rollers in applied a return force, and only the lowermost paper 40a is surely fed against a reversely directional turning effect of the roller 25 to forcibly press return the other papers.

10. 发明专利

JPS55127766A CONTROL SIGNAL DETECTION SYSTEM 失效
公开(公告)号：JPS55127766A
公开(公告)日：1980-10-02
申请号：JP3463779
申请日：1979-03-24
申请人： NIPPON TELEGRAPH & TELEPHONE , TAMURA ELECTRIC WORKS LTD , OKI ELECTRIC IND CO LTD
发明人： TANAKA TOSHIHIRO , OKUTSU KAZUHIKO , TAKIZAWA YOSHIHARU , IZUMI GOROU
IPC分类号： H04N1/32
摘要： PURPOSE:To detect a control signal by the time-up output of a time control means, by detecting change of a transmission signal to generate a pulse signal and by starting the time control means by this pulse signal. CONSTITUTION:Picture signal Sv is transmitted as transmission signal St from hybrid circuit HTB to transmission line L. Meanwhile, control signal Sc from the other party side is converted to pulses, which repeat H and L levels, through HYB by a BPF and waveform shaping circuit WF. Reset pulse generating circuit RPG detects change of the transmission signal to generate a reset pulse. The reset pulse resets FF1, and exclusive OR gate G3 becomes H only during the reset pulse period, and counter CT as a time control means is reset and is simultaneously started. Sc is detected by FF1 reset and FF3 set from the count start of CT. As a result, Sc is not detected during the transient response period of the BPF, and Sc is detected stably only when the transmission signal is not changed.

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