CN1219304A - 红外接收器和接着的电子电路之间的电隔离 - Google Patents
红外接收器和接着的电子电路之间的电隔离 Download PDFInfo
- Publication number
- CN1219304A CN1219304A CN96180025A CN96180025A CN1219304A CN 1219304 A CN1219304 A CN 1219304A CN 96180025 A CN96180025 A CN 96180025A CN 96180025 A CN96180025 A CN 96180025A CN 1219304 A CN1219304 A CN 1219304A
- Authority
- CN
- China
- Prior art keywords
- device connector
- electronic system
- outer device
- spacer assembly
- electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
- G06K7/0021—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers for reading/sensing record carriers having surface contacts
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
- G06K7/0086—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers the connector comprising a circuit for steering the operations of the card connector
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J9/00—Remote-control of tuned circuits; Combined remote-control of tuning and other functions, e.g. brightness, amplification
- H03J9/06—Remote-control of tuned circuits; Combined remote-control of tuning and other functions, e.g. brightness, amplification using electromagnetic waves other than radio waves, e.g. light
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
- H03K17/795—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors
- H03K17/7955—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors using phototransistors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/7385—Programmable or microprocessor-controlled
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
- H04M1/745—Protection devices or circuits for voltages surges on the line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/82—Line monitoring circuits for call progress or status discrimination
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Artificial Intelligence (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
- Telephonic Communication Services (AREA)
- Interface Circuits In Exchanges (AREA)
- Power Sources (AREA)
- Emergency Protection Circuit Devices (AREA)
- Devices For Supply Of Signal Current (AREA)
- Telephone Function (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Optical Communication System (AREA)
- Noise Elimination (AREA)
- Selective Calling Equipment (AREA)
- Communication Control (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Air Bags (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Filters And Equalizers (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
包含供诸如红外接收器(12)的外部装置用的连接器(J1)的电子系统包括响应于红外接收器的信号处理器(20),以及连接在连接器(J1)和信号处理器(20)之间的例如光耦合器(18)的电隔离装置。这种系统还可以包括连接在连接器(J1)和光耦合器(18)之间的电磁干扰抑制电路,例如铁氧体磁环(14),与地电位连接的电容(C1,C2)。这种系统也还可以包括连接在连接器(J1)和光耦合器(18)之间的静电放电抑制电路电阻(R1,R2)。应用:红外遥控装置。
Description
本发明涉及用于将可拆卸外部装置与包含该外部装置的信号处理电路的电子电路隔离的电路。
当前消费者电子设备往往可由用户扩展。例如,直接卫星电视系统(DSS)的现行接收器包括可以把红外(IR)遥控接收机和发射机插入其中的插头。外部IR遥控接收机连接容许用户将电视机放在一个房间、将卫星接收机放在另一房间,而用户仍能使用IR遥控单元控制卫星接收机。外部IR遥控发射机容许卫星接收机以已知的方式控制对IR遥控信号敏感的外部装置,例如盒式录象机。
然而,每当外部装置通过导线与电子设备连接时,可能形成接地回路,造成畸变和设备功能不正常。还有可能在外部装置插入时存在于外部装置的静电电荷通过电子设备放电、从而损害电子设备。也有可能将外部装置与电子设备连接的导线发射可能影响外部设备的电磁干扰(EMI)。此外,在消费者电子设备中插入插头的外部装置可能是有毛病的装置,或构形不对的装置。因为所有这些原因,希望在电子设备中有这样的电路,该电路包括用于外部装置的插头,以便将外部装置与电子设备电隔离,将潜在的静电放电(ESD)损害与电子设备隔离,并且将EMI发射减至最小。
根据本发明的原理,包含外部装置连接器的电子系统包括对外部装置起反应的信号处理器以及连接在外部装置连接器和信号处理器之间的电隔离装置。这种系统还可以包括连接在外部装置连接器和电隔离装置之间的电磁干扰抑制电路。这种系统也还可包括连接在外部装置连接器和电隔离装置之间的静电放电抑制电路。
附图中:
图1是根据本发明原理的隔离电路示意图。
图1中用方框10表示整个设备。这电子设备是可以响应用户指令而受控制的,用户指令或者来自内装电子设备10的机壳上的控制板,或者经由通过导线连接到电子设备10的遥控器,或者经由可以通插头连接到电子设备的红外(IR)遥控器。在图示实施例中,电子设备10还包括通过IR链路控制外部设备的信道,尽管这不是必须的,不是本发明的一部分。
图1中IR接收器12具有这样的构造形式,以便以已知的方式接收从IR遥控器(未图示)发出的IR信号(用闪电形的符号表示)。IR接收器12的第一和第二输出端与第一插头P1连接。第一插头P1是可以与电子设备10的第一插孔J1连接的。第一插孔J1的第一端子与第一电容C1的第一电极连接、并且通过公共铁氧体磁环14中的第一通道与第一电阻R1的第一电极连接。第一电容C1的第二电极与基准电压源(地)连接。第一电阻R1的第二电极与第一发光二极管LED1的阳极连接。第一发光二极管LED1的阴极与第二电阻R2第一电极连接。第二电阻R2的第二电极通过公共铁氧体磁环14中的第二通道与第二电容C2的第一电极以及第一插孔J1的第二端子连接。第二电容C2的第二电极与地连接。
第一发光二极管LED1向光电晶体管PT发出光信号。第一发光二极管LED1和光电晶体管PT组合构成光隔离器18。光电晶体管PT的发射极接地。光电晶体管PT的集电极连接到第三电阻R3、第三电容C3和第四电容C4的各自的第一电极、并且连接到处理器20的IR接收遥控输入端。第三电阻R3和第三电容C3的第二电极与工作电压源Vcc相连。第四电容C4的第二电极接地。遥控单元22通过导线连接到处理器20的有线遥控输入端。
处理器20还包括与第四电阻R4的第一电极连接的IR发射(IRXMIT)遥控输出端。第四电阻R4的第二电极与第一NPN晶体管T1的栅极连接。第一晶体管T1的发射极与地相连。第一NPN晶体管T1的集电极与第五电阻R5的第一电极连接。第五电阻R5的第二电极通过第二公共铁氧体磁环26中的第一通道与第五电容C5的第一电极以及第二插孔J2的第一端相连。第二插孔J2可以连接到第二插头P2。第二插头P2插入时其第一端与第二插孔J2的第一端相连。第二插头P2第一端与第二发光二极管LED2的阴极相连。第二发光二极管LED2发射IR光信号(用闪电形符号表示),该IR光信号可以用于控制外部的可红外(IR)遥控电子设备(未示出),例如录象机和/或电视机。第二发光二极管LED2阳极与第二插头P2的第二端相连。第二插头的第二端与第二插孔J2的第二端相连。第二插孔J2的第二端连接到第六电容C6的第一输入端、并且通过第二公共铁氧体磁环26第二通道连接到第六电阻6的第一电极。第六电阻R6的第二电极与工作电压源Vcc相连。尽管第一和第二公共铁氧体磁环14和26在最佳实施例中是分开的,但是,它们可以如图1中虚线所示以具有四个相应的通道的单个铁氧体磁环的形式构成。
工作时,IR接收器12产生代表从外部IR发射装置(未图示)接收到的IR信号的电信号。来自IR接收器12的IR表示信号加在第一发光二极管LED1上,产生与接收的IR光信号对应的信号。第一和第二电阻R1和R2起第一发光二极管LED1的限流器的作用。它们也提供一些抵抗静电放电的保护作用。公共铁氧体磁环14使公共模式EMI(电磁干扰)辐射减至最小,并且,公共铁氧体磁环14分别与第一和第二电容C1和C2组合、用以把电磁干扰信号减至最小,避免对外部电子设备和内部电子设备10运行的有害影响。光隔离器18提供插入第一插孔J1的外部电路(例如IR接收器12)和电子设备10之间的电隔离。这防止当电子设备各个部分连在一起时由接地回路引起的寄生信号对电子设备10运行的有害影响,也防止电子设备10受静电放电的损害。光隔离器18也提供抵抗外部电路中可能的短路的保护作用,防止用户在第一插孔J1中插入有毛病的装置而产生对电子设备10的损害。
在最佳实施例中从遥控装置(未图示)发出的信号以一串代码脉冲的形式表示指令。代码脉冲是调制在约56KHZ载波信号上的脉冲。第一发光二极管LED1产生与IR接收器12接收的IR载波光脉冲对应的光脉冲。就是说,在代码脉冲持续期间产生一串56KHZ光脉冲,在代码脉冲之间没有光脉冲。光电晶体管PT响应这些光脉冲而导通和截止。第三电阻R3作为光电晶体管PT的负载。第三和第四电容C3和C4分别滤去56KHZ载波分量,只留下代码脉冲包络。这代码脉冲包络加在处理器20的IR接收输入端。处理器20处理IR接收输入端信号,将代码脉冲解码,确定IR遥控单元(未图示)已经发出了哪一种指令。然后处理器20以已知方式控制电子设备10其他部件(未图示),执行接收的指令。
处理器20也可以控制外部设备。在最佳实施例中,例如外部设备是可以通过IR链路控制的。处理器20在其IR发射(IRXMIT)输出端产生给外部设备的指令。第二发光二极管LED2是IR发光二极管,连接在第一NPN晶体管T1集电极通路中。第一NPN晶体管T1的负载与工作电压源Vcc连接,所述负载由第六电阻R6、第二发光二极管LED2和第五电阻R5串联构成。处理器20的IR发射输出端的信号以向外部设备发送指令的适当的方式控制第一NPN晶体管T1导通和截止。当第一NPN晶体管T1导通时,第二发光二极管LED2发光,而当第一NPN晶体管T1截止时,第二发光二极管LED2不发光。
在最佳实施例中,如上所述,处理器20以外部装置将能适当地响应的方式在其IR发射输出端产生信号,该信号代表一串调制在载波上的指令代码脉冲。特定需要的指令代码和载波频率随着受控的外部装置类型和该装置的制造商而有很大不同。一般说来,发向这种外部装置的指令的载波频率可以从30KHZ变化至60KHZ。这串调制指令脉冲经第二发光二极管LED2变换为IR光脉冲。外部装置对接收到这指令作出恰当的反应。以如上所述相同的方式,第二公共铁氧体磁环26、第五和第六电容C5和C6的组合,用来将电磁干扰对外部电子设备和内部电子设备10的有害影响减至最小。
尽管本发明所述实施例是包含插入插孔的外部控制源的电子设备,但本领域的技术人员应明白,本发明的隔离电路适用于具有用户可以把外部装置插入其中的外部插孔的任何电子设备。在这种系统中,本发明将避免EMI,ESD和接地回路对电子设备的有害影响,并且将对外部装置中短路的可能性,或用户在外部插孔中插入有毛病的装置或不正确地插入装置的可能性提供保护。
以下表Ⅰ公开了图1所示元件的最佳值。
表Ⅰ
元件值
元件 | 值(Ω) |
R1 | 390 |
R2 | 390 |
R3 | 10k |
R4 | 1k |
R5 | 10 |
R6 | 36 |
元件 | 值(f) |
C1 | 100p |
C2 | 47p |
C3 | 330p |
C4 | .01μ |
C5 | 100p |
C6 | 47p |
Claims (17)
1.一种电子系统,其特征在于包括:
供外部装置用的连接器;
响应于外部装置的信号处理器;
连接在外部装置连接器和信号处理器之间的电隔离装置。
2.权利要求1的电子系统,其特征在于:所述电隔离装置包含光隔离器。
3.权利要求2的电子系统,其特征在于:
所述外部装置连接器包含第一端和第二端;以及
所述光隔离器包含发光二极管,其阳极连接到所述外部装置连接器的第一端,而阴极连接到所述外部装置连接器的第二端。
4.权利要求1的电子系统,其特征在于:
还包括连接在外部装置连接器和电隔离装置之间的静电放电抑制电路。
5.权利要求4的电子系统,其特征在于:
所述放电抑制电路包含连接在外部装置连接器和电隔离装置之间的电阻。
6.权利要求5的电子系统,其特征在于:
所述外部装置连接器包括第一端和第二端;
所述电隔离装置包括第一输入端和第二输入端;
所述静电放电抑制电路包括连接在外部装置连接器的第一端和电隔离装置的第一输入端之间的第一电阻,以及连接在外部装置连接器的第二端和电隔离装置第二输入端之间的第二电阻。
7.权利要求1的电子系统,其特征在于:
还包括连接在所述外部装置连接器和所述电隔离装置之间的电磁干扰抑制电路。
8.权利要求7的电子系统,其特征在于:
所述电磁干扰抑制电路包含连接在所述外部装置连接器和基准电压源之间的电容。
9.权利要求8的电子系统,其特征在于:
所述外部装置连接器有第一和第二端;
所述电隔离装置有与外部装置连接器第一端连接的第一输入端和与外部装置连接器第二端连接的第二输入;以及
所述电磁干扰抑制电路包括连接在所述外部装置连接器第一端和所述基准电压源之间的第一电容,以及连接在所述外部装置连接器第二端和所述基准电压源之间的第二电容。
10.权利要求7的电子系统,其特征在于:
所述电磁干扰抑制电路包括连接在所述外部装置连接器和所述电隔离装置之间的感抗元件。
11.权利要求10的电子系统,其特征在于:
所述感抗元件是铁氧体磁环。
12.权利要求11的电子系统,其特征在于:
所述外部装置连接器有第一端和第二端;
所述电隔离装置有第一输入端和第二输入端;
所述电磁干扰抑制电路包括通过连接在所述外部装置连接器的所述第一端与所述电隔离装置的所述第一输入端之间的所述铁氧体磁环的第一通路以及通过连接在所述外部装置连接器的所述第二端与所述电隔离装置的所述第二输入端之间的铁氧体磁环的第二通路。
13.权利要求7的电子系统,其特征在于:
还包括连接在所述外部装置连接器和所述电隔离装置之间的静电放电抑制电路。
14.权利要求1的电子系统,其特征在于:
所述外部装置是与外部装置连接器连接的IR接收器;
所述电子系统还包括IR信号处理器;以及
所述电隔离装置连接在IR接收器和IR信号处理器之间。
15.权利要求1的电子系统,其特征在于:
所述电子系统是直接卫星系统接收器;
所述信号处理器是遥控处理器;
所述外部装置是遥控信号接收机;以及
所述电隔离装置是光隔离器。
16.权利要求15的电子系统,其特征在于:
所述遥控信号接收器包括适合于接收调制在IR光载波信号上的编码控制信号的电路;
所述光隔离器含有经过外部装置连接器连接至遥控信号接收器的发光二极管和对发光二极管发出的光信号敏感的光电晶体管,用于产生代表调制编码控制信号的信号;以及
所述电子系统还包括将光电晶体管发出的调制编码控制表示信号解调和产生表示编码控制信号的信号的电路。
17.权利要求16的电子系统,其特征在于:
所述电隔离装置包括连接在工作电压源和基准电压源之间的负载电阻和光电晶体管主导电通路的串联连接;以及
所述解调电路包括连接在负载电阻和光电晶体管主导电通路的结点和工作电压源之间的第一电容,以及连接在负载电阻和光电晶体管主导电通路的结点和基准电压源之间的第二电容。
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US917895P | 1995-12-22 | 1995-12-22 | |
US60/009,178 | 1995-12-22 | ||
GB9600002.1 | 1996-01-02 | ||
GBGB9600002.1A GB9600002D0 (en) | 1996-01-02 | 1996-01-02 | Receiver for compressed television information |
GBGB9613608.0A GB9613608D0 (en) | 1996-06-28 | 1996-06-28 | 40mhz VCXO and loop filter for digital symbol lock timing for high speed modems |
GB9613608.0 | 1996-06-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1219304A true CN1219304A (zh) | 1999-06-09 |
CN1097878C CN1097878C (zh) | 2003-01-01 |
Family
ID=27268058
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96180026A Expired - Lifetime CN1126056C (zh) | 1995-12-22 | 1996-12-17 | 故障检测和修正电路 |
CN96180025A Expired - Lifetime CN1097878C (zh) | 1995-12-22 | 1996-12-17 | 红外接收器和接着的电子电路之间的电隔离 |
CNB961999780A Expired - Fee Related CN1166158C (zh) | 1995-12-22 | 1996-12-17 | 电话设备的保护电路 |
CNB961999799A Expired - Lifetime CN1166162C (zh) | 1995-12-22 | 1996-12-17 | 自动用户回叫系统 |
CN96199239A Expired - Lifetime CN1095269C (zh) | 1995-12-22 | 1996-12-18 | 用于检测电话分机摘机情况的调制解调器环路电流监测系统 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96180026A Expired - Lifetime CN1126056C (zh) | 1995-12-22 | 1996-12-17 | 故障检测和修正电路 |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB961999780A Expired - Fee Related CN1166158C (zh) | 1995-12-22 | 1996-12-17 | 电话设备的保护电路 |
CNB961999799A Expired - Lifetime CN1166162C (zh) | 1995-12-22 | 1996-12-17 | 自动用户回叫系统 |
CN96199239A Expired - Lifetime CN1095269C (zh) | 1995-12-22 | 1996-12-18 | 用于检测电话分机摘机情况的调制解调器环路电流监测系统 |
Country Status (12)
Country | Link |
---|---|
US (1) | US6442255B1 (zh) |
EP (5) | EP0868810B1 (zh) |
JP (5) | JP4077877B2 (zh) |
KR (5) | KR100408983B1 (zh) |
CN (5) | CN1126056C (zh) |
AU (5) | AU1151997A (zh) |
BR (3) | BR9612176A (zh) |
CA (1) | CA2240287C (zh) |
DE (3) | DE69636523T2 (zh) |
HK (1) | HK1018651A1 (zh) |
MX (5) | MX9805008A (zh) |
WO (5) | WO1997023954A1 (zh) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2777727B1 (fr) * | 1998-04-17 | 2000-06-30 | Thomson Multimedia Sa | Modem comportant un dispositif de detection de l'occupation d'une ligne telephonique |
US6104791A (en) * | 1998-06-11 | 2000-08-15 | Conexant Systems, Inc. | System and method for performing telephone line-in-use detection, extension pick-up detection, and remote hang-up detection in a modem |
SE0003517L (sv) * | 2000-09-29 | 2001-11-26 | Transmode Systems Ab | Sändarkrets innefattande en ljuskälla, och ett kommunikationssystem |
US20020112241A1 (en) * | 2001-02-14 | 2002-08-15 | Cocchi Ronald P. | Internet service provider callback for satellite systems |
KR20030005822A (ko) * | 2001-07-10 | 2003-01-23 | 삼성전자 주식회사 | 스마트카드 보호용 리세트 장치 |
KR100459212B1 (ko) * | 2001-11-06 | 2004-12-03 | 엘지.필립스 엘시디 주식회사 | 액정표시소자 제조용 스퍼터 |
US7269254B2 (en) * | 2002-05-21 | 2007-09-11 | Silicon Laboratories, Inc. | Integrated driver circuitry |
EP1391840A1 (en) | 2002-08-21 | 2004-02-25 | Thomson Licensing S.A. | Appliance with an IC card reader and overload protection |
KR20040072881A (ko) * | 2003-02-11 | 2004-08-19 | 엘지산전 주식회사 | 적외선 시리얼 변환 장치 |
US7239693B2 (en) * | 2003-06-30 | 2007-07-03 | Bellsouth Intellectual Property Corporation | Network-based timed ring suppression |
US7443967B1 (en) | 2003-09-29 | 2008-10-28 | At&T Intellectual Property I, L.P. | Second communication during ring suppression |
CA2490974C (en) * | 2004-12-23 | 2016-05-17 | Bce Inc | Method, system and apparatus for establishing a packet-based connection with a dial up modem |
EP1925149B1 (en) * | 2005-09-15 | 2013-04-17 | Tyco Safety Products Canada Ltd. | Telephone line communication interface |
US7835516B2 (en) * | 2005-12-29 | 2010-11-16 | Tyco Safety Products Canada Ltd. | Direct access arrangement device |
CN101472010B (zh) * | 2007-12-27 | 2011-05-18 | 华为技术有限公司 | 一种实现电话台灯管理的方法、系统及装置 |
CN101295349B (zh) * | 2008-05-30 | 2011-07-06 | 北京飞天诚信科技有限公司 | 一种智能卡数据截取系统及控制方法 |
US8280070B2 (en) * | 2008-08-20 | 2012-10-02 | Siemens Industry, Inc. | Arrangement and method for communicating audio and DC signals |
CN101615152B (zh) * | 2009-07-13 | 2013-07-03 | 中兴通讯股份有限公司 | 存储卡热插拔故障的检测方法和装置 |
CN102025412B (zh) * | 2009-09-16 | 2014-11-05 | 海洋王照明科技股份有限公司 | 一种红外接收电路 |
CN103873610A (zh) * | 2012-12-13 | 2014-06-18 | 上海共联通信信息发展有限公司 | 一种使用寿命长的公用电话终端设备 |
CN109561194B (zh) * | 2018-12-27 | 2021-08-06 | 深圳市新国都支付技术有限公司 | 一种pos机拨号方法和装置 |
CN112054482B (zh) * | 2020-08-06 | 2022-05-06 | 三峡大学 | 基于dtw算法的换流变压器零序差动保护防误动方法 |
Family Cites Families (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7614118A (nl) * | 1976-12-20 | 1978-06-22 | Philips Nv | Schakeling voor het beschermen van telefoon- lijnen. |
US4132864A (en) * | 1977-04-28 | 1979-01-02 | International Business Machines Corporation | Digital measurement of the DC value in an AC signal adapted to telephone off-hook detection |
US4203006A (en) * | 1978-04-20 | 1980-05-13 | Prentice Corporation | Direct access coupler |
US4431867A (en) * | 1981-06-15 | 1984-02-14 | Hayes Microcomputer Products, Inc. | Modem with low part count and improved demodulator |
CH661397A5 (en) * | 1984-05-16 | 1987-07-15 | Autophon Ag | Telephone subscriber station with an electronic switch which opens and closes the subscriber loop |
JPS61289480A (ja) * | 1985-06-17 | 1986-12-19 | Sankyo Seiki Mfg Co Ltd | Icカ−ドリ−ダ |
US4760355A (en) * | 1985-11-04 | 1988-07-26 | Glen Dash | Electromagnetic emission control system |
JPS62282389A (ja) * | 1986-05-31 | 1987-12-08 | Toshiba Corp | 携帯可能記録媒体の読取・書込装置 |
FR2604555B1 (fr) * | 1986-09-30 | 1988-11-10 | Eurotechnique Sa | Circuit integre du type circuit logique comportant une memoire non volatile programmable electriquement |
IT1197977B (it) * | 1986-11-13 | 1988-12-21 | Sgs Microelettronica Spa | Circuito telefonico, integrabile monoliticamente, per l'invio di segnali di suoneria in una linea telefonica d'utente ed il riconoscimento dello sgancio in fase di suoneria |
US4807278A (en) * | 1987-05-11 | 1989-02-21 | Ross David W | Telecommunication controller having a telephone line sharing function |
US4958371A (en) * | 1988-04-19 | 1990-09-18 | Control Data Corporation | Method and apparatus for determining when a telephone handset is off-hook |
JP2563475B2 (ja) * | 1988-05-13 | 1996-12-11 | 沖電気工業株式会社 | マイクロコンピュータ及びマイクロコンピュータを内蔵したicカード |
JPH0255355U (zh) * | 1988-10-11 | 1990-04-20 | ||
JPH02135589A (ja) * | 1988-11-15 | 1990-05-24 | Omron Tateisi Electron Co | Icカードシステム |
JPH03163938A (ja) * | 1989-11-22 | 1991-07-15 | Hitachi Ltd | 信号伝送回路 |
DE4008939A1 (de) * | 1990-03-20 | 1991-09-26 | Elero Antrieb Sonnenschutz | Elektronische rolladensteuerung mit steckbarem steuerteil |
SE466726B (sv) * | 1990-08-20 | 1992-03-23 | Kent Lennartsson | Anordning vid distribuerat datorsystem |
GB9021222D0 (en) * | 1990-09-28 | 1990-11-14 | Raychem Ltd | Circuit protection device |
US5291545A (en) * | 1990-10-02 | 1994-03-01 | Intertex Data Ab | Apparatus and method for determining the state of a telephone line |
US5493469A (en) * | 1991-01-18 | 1996-02-20 | Mildred A. Lace | Surge protection for data lines |
US5241565A (en) * | 1991-06-25 | 1993-08-31 | Microcom Systems, Inc. | Method and apparatus for effecting efficient transmission of data |
US5239575A (en) * | 1991-07-09 | 1993-08-24 | Schlumberger Industries, Inc. | Telephone dial-inbound data acquisition system with demand reading capability |
EP0603436B1 (en) * | 1992-12-21 | 1999-03-03 | STMicroelectronics Pte Ltd. | Parallel phone detection circuit |
JP3426293B2 (ja) * | 1993-07-26 | 2003-07-14 | 株式会社リコー | 通信制御装置 |
US5422939A (en) * | 1993-08-05 | 1995-06-06 | Schlumberger Industries, Inc. | Parallel off-hook detection for both line-available and phone pick-up detection |
US5488654A (en) * | 1993-09-29 | 1996-01-30 | Telegenics, Inc. | Telemetry device including a dynamic off-hook detector capable of operationg in a pulse-dialing environment |
US5535265A (en) * | 1993-11-15 | 1996-07-09 | Ast Research, Inc. | Method and circuitry for controlling voice mail, call logging and call blocking functions using a modem |
US5494573A (en) * | 1994-02-14 | 1996-02-27 | Aquatec Water Systems, Inc. | Reverse osmosis water purification diagnostic system |
BR9510128A (pt) * | 1994-12-30 | 1997-12-30 | Thomson Consumer Electronics | Modem com provisões de chamada de retorno automática |
US6134321A (en) * | 1995-12-22 | 2000-10-17 | Thomas Licensing S.A. | Modem loop current detect system to detect an off-hook condition in an extension telephone |
-
1996
- 1996-12-17 EP EP96945262A patent/EP0868810B1/en not_active Expired - Lifetime
- 1996-12-17 AU AU11519/97A patent/AU1151997A/en not_active Abandoned
- 1996-12-17 CN CN96180026A patent/CN1126056C/zh not_active Expired - Lifetime
- 1996-12-17 JP JP52373197A patent/JP4077877B2/ja not_active Expired - Fee Related
- 1996-12-17 AU AU12908/97A patent/AU715450B2/en not_active Expired
- 1996-12-17 DE DE69636523T patent/DE69636523T2/de not_active Expired - Lifetime
- 1996-12-17 BR BR9612176A patent/BR9612176A/pt not_active Application Discontinuation
- 1996-12-17 JP JP52372997A patent/JP3573350B2/ja not_active Expired - Fee Related
- 1996-12-17 WO PCT/US1996/019929 patent/WO1997023954A1/en active IP Right Grant
- 1996-12-17 KR KR10-1998-0704617A patent/KR100408983B1/ko not_active IP Right Cessation
- 1996-12-17 BR BR9612168A patent/BR9612168A/pt not_active IP Right Cessation
- 1996-12-17 KR KR10-1998-0704618A patent/KR100454013B1/ko not_active IP Right Cessation
- 1996-12-17 JP JP52384297A patent/JP4452330B2/ja not_active Expired - Lifetime
- 1996-12-17 CN CN96180025A patent/CN1097878C/zh not_active Expired - Lifetime
- 1996-12-17 AU AU14199/97A patent/AU1419997A/en not_active Abandoned
- 1996-12-17 DE DE69604596T patent/DE69604596T2/de not_active Expired - Lifetime
- 1996-12-17 WO PCT/US1996/019928 patent/WO1997023840A1/en active IP Right Grant
- 1996-12-17 EP EP96942968A patent/EP0868807A1/en not_active Ceased
- 1996-12-17 CN CNB961999780A patent/CN1166158C/zh not_active Expired - Fee Related
- 1996-12-17 KR KR10-1998-0704619A patent/KR100490016B1/ko not_active IP Right Cessation
- 1996-12-17 KR KR10-1998-0704622A patent/KR100422229B1/ko not_active IP Right Cessation
- 1996-12-17 AU AU14673/97A patent/AU1467397A/en not_active Abandoned
- 1996-12-17 JP JP09523730A patent/JP2000516358A/ja active Pending
- 1996-12-17 EP EP96944374A patent/EP0868781B1/en not_active Expired - Lifetime
- 1996-12-17 WO PCT/US1996/019932 patent/WO1997023987A1/en not_active Application Discontinuation
- 1996-12-17 EP EP96943749A patent/EP0868704B1/en not_active Expired - Lifetime
- 1996-12-17 CN CNB961999799A patent/CN1166162C/zh not_active Expired - Lifetime
- 1996-12-17 US US09/091,335 patent/US6442255B1/en not_active Expired - Lifetime
- 1996-12-17 WO PCT/US1996/020514 patent/WO1997023989A1/en active IP Right Grant
- 1996-12-18 CN CN96199239A patent/CN1095269C/zh not_active Expired - Lifetime
- 1996-12-18 BR BRPI9612170-0A patent/BR9612170B1/pt not_active IP Right Cessation
- 1996-12-18 DE DE69620023T patent/DE69620023T2/de not_active Expired - Lifetime
- 1996-12-18 KR KR10-1998-0704623A patent/KR100419331B1/ko not_active IP Right Cessation
- 1996-12-18 JP JP52377097A patent/JP4044962B2/ja not_active Expired - Fee Related
- 1996-12-18 EP EP96944437A patent/EP0868805B1/en not_active Expired - Lifetime
- 1996-12-18 WO PCT/US1996/020117 patent/WO1997023985A1/en active IP Right Grant
- 1996-12-18 CA CA002240287A patent/CA2240287C/en not_active Expired - Fee Related
- 1996-12-18 AU AU14244/97A patent/AU1424497A/en not_active Abandoned
-
1998
- 1998-06-19 MX MX9805008A patent/MX9805008A/es unknown
- 1998-06-19 MX MX9805004A patent/MX9805004A/es unknown
- 1998-06-19 MX MX9805001A patent/MX9805001A/es unknown
- 1998-06-19 MX MX9805005A patent/MX9805005A/es unknown
- 1998-06-19 MX MX9805007A patent/MX9805007A/es unknown
-
1999
- 1999-08-24 HK HK99103643A patent/HK1018651A1/xx not_active IP Right Cessation
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1097878C (zh) | 红外接收器和接着的电子电路之间的电隔离 | |
US6384946B1 (en) | Electrical isolation between IR receiver and further electronic circuits | |
EP0748067B1 (en) | Infrared repeater | |
CN101640956B (zh) | 通用型铁路信号灯智能电源电子变换器的设计方法 | |
EP0331959A3 (en) | Bipolar filtered feedthrough terminal | |
KR20010021687A (ko) | 전자 기기를 위한 웨이크업 회로 | |
EP0008238B1 (en) | A multiplex information handling system | |
CN202014236U (zh) | 一种输入/输出隔离模块 | |
JP2600480B2 (ja) | 受光回路 | |
CN107071962B (zh) | 一种能够防止高压损坏的电源及通信电路 | |
CN110344814A (zh) | 一种测井仪用前端电路 | |
CN219459086U (zh) | Can通信电路 | |
CN115395770B (zh) | 高压集成电路和接地方法 | |
CN217087766U (zh) | 一种用于电气机柜的抗干扰电路 | |
CN116184306B (zh) | 抗脉冲群的can通讯隔离装置及去干扰方法 | |
CN218850406U (zh) | 一种能够监测异常高压信号的防雷模块 | |
CN208691269U (zh) | 一种适用于监控设备的两总线通讯模块电路 | |
JP3164139B2 (ja) | バスインターフェイス装置 | |
CN117200892A (zh) | 一种lin光耦隔离装置 | |
CN105785834A (zh) | 模拟量输出板卡和模拟量输出方法 | |
JPH0736451Y2 (ja) | 機器のケーブル接続回路 | |
JPH025274B2 (zh) | ||
CN1251242A (zh) | 电源检测电路 | |
CN115986703A (zh) | 一种防护组件 | |
JPH04219077A (ja) | 陰極線管接続回路 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20030101 |
|
EXPY | Termination of patent right or utility model |