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41. 发明专利

JPH07122992A BUS DRIVER 失效
公开(公告)号：JPH07122992A
公开(公告)日：1995-05-12
申请号：JP26682193
申请日：1993-10-26
申请人： NEC CORP
发明人： KAMIYA HIROSHI
IPC分类号： G06F3/00 , H03K17/62 , H03K19/0175 , H03K19/018
摘要： PURPOSE:To make it possible to adjust the slew rate of a signal in multistages by using a delay circuit enabling the adjustment of delay time in multistages. CONSTITUTION:A delay circuit 1 is composed of plural delay blocks. The plural blocks are composed of delay elements G 1 to G 8 and selector S 1 to S 3 selecting either one of the output signals of these delay elements G 1 to G 8 and the signals bypassing the delay elements G 1 to G 8. The delay time of each delay block is constituted so as to differ with each other. Therefore, the delay signals of various kinds of delay time can be obtained by the combination of external selection signals. By superposing these delay signals and an input signal in an output circuit 2, a slew rate can be adjusted in multistages.

42. 发明专利

JPH0795027A BI-CMOS REPROGRAM LOGIC DEVICE 失效
公开(公告)号：JPH0795027A
公开(公告)日：1995-04-07
申请号：JP2177594
申请日：1994-01-07
申请人： DAINA LOGIC CORP
发明人： BAANERU JII UESUTO , MADOFUKAA BII BORA
IPC分类号： H01L21/8249 , H01L27/06 , H03K17/00 , H03K17/62 , H03K19/086 , H03K19/173
摘要： PURPOSE: To provide an appropriate high-speed switching technique for completing a field programmable gate array using CMOS steering logic on the outer side of a high-speed data path, by using current mode logic in the high-speed data path so as to enable high-speed switching logic and achieve multiplexer, selector and cross bar switch functions. CONSTITUTION: In order to complete the multiplexer of 1 input and 2 output, the signals of the data path of complimentary signal lines A and A- are directed to one or both of complimentary output signal pairs Y1/Y1- and Y2/Y2-. It is performed by using the enabling signals of EN1 and EN2 or steering signals and CMOS steering transistor pairs N1/P1 and N2/P2 present on the outer side of the data path.

43. 发明专利

JPH0774618A ECL CIRCUIT 失效
公开(公告)号：JPH0774618A
公开(公告)日：1995-03-17
申请号：JP23898593
申请日：1993-08-31
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ICHINO HARUHIKO
IPC分类号： H03K3/286 , H03K17/62 , H03K19/086 , H03K19/21
摘要： PURPOSE:To suppress increase of a wiring area and to improve the fast operability and the noise resistance by using an ECL circuit of a low voltage level and applying a level stabilizing capacity. CONSTITUTION:The transistors TR Q11 and Q12 having the emitters connected in common to each other form a differential pair. The resistance RL7 and RL8 connected between the collectors and grounds IN of both TR Q11 and Q12 function as the load resistances. Then a TR Q13 and a resistance RCS5 connected between the common emitters of both TR Q11 and Q12 and VEE function as the constant current sources. Meanwhile the resistances RL9 and RL10 function as the load resistances, and a TR Q16 and a resistance RCS6 function as the constant current sources respectively. In regard of the relation of logical levels between the signals of types 1 and 2, the low levels of signals of both types are equal to each other and a high level of signal of the type 1 is higher than that of the type 2 by about half of logical amplitude. Furthermore a level stabilizing capacity CSH1 is connected to the circuit that produces a signal of the type 2.

44. 实用新型

JPH071865Y2 失效
公开(公告)号：JPH071865Y2
公开(公告)日：1995-01-18
申请号：JP11911786
申请日：1986-08-02
IPC分类号： H03K17/62

45. 发明专利

JPH06100889B2 失效
公开(公告)号：JPH06100889B2
公开(公告)日：1994-12-12
申请号：JP32156087
申请日：1987-12-21
IPC分类号： G09G3/22 , G09G3/30 , H03K17/567 , H03K17/62 , H03K17/66

46. 发明专利

JPH06338775A SWITCHING CIRCUIT 失效
公开(公告)号：JPH06338775A
公开(公告)日：1994-12-06
申请号：JP15285193
申请日：1993-05-31
申请人： SONY CORP
发明人： CHIBA HIDEKI , YOSHIZAWA YUKIE
IPC分类号： H03K17/62 , H03K17/00
摘要： PURPOSE:To provide a switching circuit applicable to the case to handle large amplitude and a circuit with large difference in a power supply voltage, etc., and capable of surely reducing crosstalk. CONSTITUTION:The crosstalk can be reduced by comprising the switching circuit in two stages, passing input signals IN1-IN3 when they are selected by control signals CTRL1-CTRL3 by a control circuit 30 and setting a mute state by connecting the output to a constant voltage source V when they are not selected an input circuits 11-13 as the switching circuit at the initial stage, and obtaining the final output signal VOUT by selecting the output of the input circuits 11-30 based on the control signals CTRL1-CTRL3 by the control circuit 30 at a selection circuit 20 as the switching circuit at the next stage.

47. 实用新型

JPH0644200Y2 失效
公开(公告)号：JPH0644200Y2
公开(公告)日：1994-11-14
申请号：JP6276186
申请日：1986-04-25
IPC分类号： H03K17/60 , H03K17/62 , H04L5/16 , H04L25/02

48. 发明专利

JPH06314935A POWER SUPPLY CIRCUIT 失效
公开(公告)号：JPH06314935A
公开(公告)日：1994-11-08
申请号：JP10255693
申请日：1993-04-28
申请人： TOYOTA MOTOR CORP
发明人： KAMIYA TAKUMI
IPC分类号： G05F1/56 , H03F1/02 , H03K17/08 , H03K17/62
摘要： PURPOSE:To facilitate the changeover between a 1st power supply and a 2nd power supply whose output voltage is larger than that of the 1st power supply. CONSTITUTION:A 1st circuit connected in parallel with a 1st power supply and supplying a current in opposite direction to an output current by a 1st power supply bypasses a current I1 when a voltage higher than a usual voltage V1 is applied to the output terminal 1 of the 1st power supply. Since a 2nd circuit decreases the input current of 2nd transistors(TRs) Q2, Q3 when the current I, flowing to the 1st circuit increases, a 3rd TR Q13 driven by the 2nd TRs Q2, Q3 decreases the current I1 flowing to the 1st circuit. As a result, the current I1 flowing to the 1st circuit is limited to a desired prescribed value.

49. 发明专利

JPH06252725A POWER SUPPLY CHANGEOVER CIRCUIT 失效
公开(公告)号：JPH06252725A
公开(公告)日：1994-09-09
申请号：JP3693893
申请日：1993-02-25
申请人： NEC CORP
发明人： SUZUKI TOMOHARU
IPC分类号： H02J9/06 , H03K17/62
摘要： PURPOSE:To provide a power supply changeover circuit of a system configured in duplicate having a very small voltage loss and leakage current and switched uninterruptibly. CONSTITUTION:Emiteres of two sets of transistors (TRs) 1,2 being components of a switch circuit of each power supply are respectively connected to input power supplies 12,13 and bases are connected to a bias resistor 5 through TRs 3.4. The other end of the bias resistor 5 is connected to a GND 15. Collectors of the TRs 1,2 are connected together, and the connecting point is used for an output voltage terminal 14. Moreover, diodes 10,11 are connected in a polarity to block a current flowing reversely to an input power supply and resistors 8,9 are connected to control a bias voltage. Thus, the two power supplies are switched uninterruptibly and the power supply changeover circuit is realized, in which a voltage loss and a leakage current are very small.

50. 发明专利

JPH06216732A SWITCHING CIRCUIT 失效
公开(公告)号：JPH06216732A
公开(公告)日：1994-08-05
申请号：JP23145293
申请日：1993-09-17
申请人： SAMSUNG ELECTRONIC
发明人： MINAMI MEIGEN
IPC分类号： H03K17/00 , H03K17/62
摘要： PURPOSE: To miniaturize a switching circuit by reducing the number of terminals and reducing the number of peripheral circuits by inputting/outputting one switching signal through one terminal while preventing an output signal from affecting an input signal. CONSTITUTION: This switching circuit is composed of a switching input/output IC 1000 capable of outputting an input/output signal from the same terminal, six switching elements S1-S6 linked to input/output terminals I/O1 to I/O6, and six display elements LED1 to LED6. In this case, the input/output IC 1000 is composed of input/output signal interface circuits 10i [(i)=0, 1 to 6] and input/output signal separate circuits 20i for controlling the output signals so as not to affect the input signals while being lined to any one of switching elements Si and any one of LEDi. Thus, one switching element Si and one display element LEDi respectively require one circuit 10i and 20i. Thus, a cut-off signal is generated at predetermined time intervals when forming a current path.

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