TW480865B - Cross-reference to related applications - Google Patents

Description

480865 The Intellectual Property Bureau of the Ministry of Economic Affairs, the Consumer Cooperative Cooperative Print A7 V. Description of the invention (Manmin background invention) The present invention relates generally to telecommunication systems, and more specifically, to an impedance blocking filter used in telecommunication systems. Circuit, which is interconnected between an incoming telephone line of the telephone company (s central office (CO ·)) and a user or customer telephone equipment such as a telephone set at the subscriber's premises, To absolutely block the impedance of the telephone above 20Khz. The best example of the previous technology is the following US patent documents (us. Letters Patent), which is developed by searching the subject of the following applications: 4,613,732 4,823,383 4,742,541 5,642,416 4,743,999 5,802,170 issued on April 18, 1989 in U.S. Patent No. 4,823,383 issued by Cardot et al., Discloses a protection device for a terminal device of a telephone user terminal, which includes voltage surge protection Circuits and / or filters to prevent RF signals and interference. This filter In series inductors LI, L2, L3, and L5 connected to two terminal points E1 and S1, and series inductors L, i'l, 2, L4, and L'5 connected to two terminal points E2 and S2. The capacitor C5 is connected between the junctions of the inductors L2 and L3 and the junctions of the inductors L'2 and L4. The surge protection circuit includes thermistors THl, TH2 and the voltage limiter (v〇). hage limiters) Dl -D3 〇 This paper size applies to China National Standard (CNS) A4 specification (210 X 297 public love) 91650-·: -------- ------- line (please read the notes on the back before filling this page) 480865 A7 V. Description of Invention (2) US Patent No. 5'802 issued to Smith et al. On September 1, 1998, 'Revealed in # 170—A customer bridge module ㈣st. Free b Chan μ (please read the notes on the back before filling this page) module) to connect the telephone line of the telephone company and the telephone line of the user's phone to the telephone network Interface device. In one embodiment, the customer bridge module includes an overcurrent protection device (overcurrent protection and RF interference filter). The overcurrent protection device is composed of positive temperature coefficient resistors 220 and 222 and an inductor. The RFI filter consists of inductors 224a-224c, 226a-226c and capacitors 23a-236c. Inductors and capacitors are used to form a multi-pole low-pass wave filter. U.S. Patent No. 5,642,416, issued to Hill et al. On June 24, 1997, discloses an electromagnetic interference bypass filter that can suppress the tip and ring conduction of telephone line-powered equipment ) RF noise current of the wire. The filter includes first and second inductors 51 and 53 and first and second capacitors 41 and 43. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. It is generally known that many telephone users or customers have personal computers on their clients. Sometimes, a computer user receives an ADSL (Asynchronous Digital Subscriber Line) signal from the Internet through the same telephone line and through an Internet service provider (ISP). In order to increase the speed of downloading information from the Internet, an ADSL network interface is generally used and installed between the incoming telephone line and the user's computer. However, because one or more telephone user terminal devices such as telephones, fax machines, and / or answering machines are also connected to the same incoming telephone line via the indoor telephone line, the terminal device may cause problems with ADSL interference, severely limiting or Reduce data transfer rate. In a situation that has already been encountered, when the telephone equipment is hung from the microphone (〇 [This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 public love) 2 91650

Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs (00k) to hand-off microphone (off-h00k), and sometimes even the telephone terminal equipment in the" hook up microphone "state can produce Resonance effect, and the frequency of 鬲 to 500khZ will reduce the impedance value to less than lOS (Ohms). Therefore, it is worthwhile to provide an impedance blocking filter circuit to connect a telephone terminal device which causes unstable input impedance. The impedance blocking filter circuit of the present invention belongs to a modular design, which makes it easy to connect in series to a 'telephone terminal device which causes a problem. The impedance blocking filter circuit absolutely blocks any telephone impedance at frequencies above 20khz (for example: open, short, capacitive, inductive, resonant, or any combination of the foregoing). SUMMARY OF THE INVENTION Therefore, the general purpose of the present invention is to provide an impedance blocking filter circuit to effectively eliminate ADSL interference caused by telephone terminal equipment. One of the items of the present invention is to provide an impedance blocking filter circuit for connection to a telephone terminal device causing unstable input impedance. Another object of the present invention is to provide an impedance blocking filter circuit for a telecommunication system, which is connected between an incoming telephone line and a customer's terminal equipment to absolutely block the ADSL network interface device and / or the home network. 201 ^ 2 caused by the customer terminal equipment of the interface device; the impedance above the frequency. Yet another object of the present invention is to provide a modular design of an impedance blocking filter circuit to easily connect in series to a telephone terminal device causing a problem. Yet another object of the present invention is to provide an impedance blocking filter circuit 'which is composed of six inductors, two resistors, and a capacitor. According to a preferred embodiment of the present invention, there is provided a line for use in electricity -------------------- order --------- ( Please read the notes on the back before filling out this page) This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 297 mm) 3 91650 480865 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 V. Invention Description (4 ) The impedance blocking filter circuit of the communication system is connected to the input terminal of the telephone line and the customer. In addition, the impedance of frequencies above 20khz caused by the customer terminal equipment of the ADsl network interface device and / or the home network interface device is absolutely blocked. The wave filter circuit includes first, second, and third inductors connected in series between a first input terminal point ... in common. The first inductor has its-terminal connected to a first input terminal point and its other terminal connected to one of the terminals of the second inductor. 'The other end of the second inductor is connected to one end of the third inductor. The other end of the third inductor is connected to the first common point. The first resistor also has its -terminal connected to the -common point and its other -terminal connected to the first output terminal. The further step of the m circuit includes the fourth, the second, the fifth, and the sixth inductor connected in series between the second input terminal point and the second common point. The fourth inductor has eight terminals connected to the second input terminal point and the other terminal connected to the-terminal of the fifth inductor. The other end of the fifth inductor is connected to the -end of the sixth inductor. The other end of the sixth inductor is connected to the second common point. The second resistor has one terminal connected to a second common point and the other resistor connected to a second output terminal point. A capacitor has one terminal connected to a first common point and the other terminal connected to a second common point. The above application is specifically for the disclosure of the mother case with serial number 09 / 195,522. / The third embodiment of an impedance blocking filter circuit added through this second part of the continuous application is quite similar to the schematic diagram of FIG. 3, except that the filter circuit has been modified to use the first and second resonances The circuit replaces the resistors ㈣ and… with a resemblance and connects to capacitor C1 in series with a reed switch. Therefore, this third embodiment indicates that the China Standard (CNS) A4 specification applies to the 3 'paper size. -------- ^ --------- line (please read the Note for this page, please fill out this page) PC4 91650 A7

480865 V. Description of the invention (5) An improvement of the embodiment of the figure, because it overcomes the problem of parallel increase of capacitance and eliminates the deterioration of reflected wave loss in the handset. In addition, a fourth embodiment of the impedance blocking filter circuit of the present invention is added through this second part of the continuous application, which includes all the components of the third embodiment, and the seventh and eighth inductors have been further added successively. L7, L8; second capacitor and second reed switch K2 connected in series; and ninth and tenth inductors L9, L10. In the fifth embodiment, a blocking filter circuit similar to the circuit diagram of FIG. 3 is provided, except that the filter circuit has been modified to remove the resistors R1 and R2 and the reed switch K1 is connected in series to Capacitor ci. The four inductors L1_L4 and the reed switch K1 are all enclosed in a multi-staged bobbin structure, to effectively reduce interwinding capacitance between coils. In the sixth embodiment, A blocking filter circuit is provided, which includes all the components in the fifth embodiment, and further adds seventh and eighth inductors L7, L8; a second capacitor C2 connected in series to the second reed switch K2; and The ninth and tenth inductors L9, L10. The second reed switch K2 is also wrapped in a multi-stage tubular bobbin structure. After this second part of the continuous application, a seventh embodiment of the impedance-blocking filter circuit of the present invention is added, which is quite similar to the filter circuit of FIG. 9 'wherein the wave circuit has been modified to include Inductor L13 connected between inductor L1 and common point A; Inductor L14 connected between inductor L2 and common point B; and across the inductor --- lr -------- --------- Order --------- line (Please read the notes on the back before filling this page) Printed by the Consumers' Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs This paper is applicable to China Standard (CNS) A4 specifications (210 X 297 mm) 5 91650 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 480865 A7 w --- B7 V. Description of the invention (6) Capacitors C5 of LI and L2. Therefore, this seventh embodiment represents an improvement over the embodiment of FIG. 9 because it suppresses the influence of the switching transient on the line side of the end of the house wiring entering the ADSL modem. . Further, an eighth embodiment of the impedance blocking filter circuit of the present invention is added through this second part of the continuous application. This eighth embodiment is substantially the same as the third-order filter circuit of FIG. 9, where In addition to the filter circuit, it has been modified to replace the reed switches μ and K2 with a pair of transistors Q1 and Q2; resistors R5; capacitors C5 and C6; and varistor D3 and D4; capacitors C1 and C2; and varistor D1, D2. In addition, the inductors L5 and L6 in Figure 9 have been removed. In the ninth embodiment, an impedance blocking filter circuit is provided, which is similar to the circuit diagram of FIG. 12, except that the filter circuit has been modified to include TW and

An inductor Li3 between the common point A; an inductor L14 connected between the inductor coil RW and the common point B; and a capacitor C5 connected between the inductor coil tw and RW. The inductors L5, L6 ° of Figure I] have been removed. A brief description of the union type is provided by the following detailed description. With the accompanying drawings, the purpose and advantages of the present invention will become more clear. The reference number indicates the corresponding part, where: Figure 1 is a complete block diagram of the telecommunications system interconnected between the central office and the user end, which uses the impedance blocking filter circuit of the present invention; --------- ----- Installation -------- Order inn 1 ni ϋ · I (Please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) A4 (210 X 297) (Mm) 6 91650 480865 A7 printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (Figure 2 is an exploded perspective view of a form of modular cover that can cover the impedance blocking filter circuit inside Figure 1 is a schematic circuit diagram of an impedance blocking filter circuit constructed in accordance with the principles of the present invention; Figure 4 is a schematic circuit diagram of a second embodiment of an impedance blocking filter circuit according to the principles of the present invention; Figure 5 is the third Impedance blocking filtering Frequency function diagram of the round-in impedance of the circuit of the receiver under different impedances of the telephone equipment; Figure 6 is a schematic circuit diagram of the current limiting protection circuit using the filter circuit of Figure 3; Figure 7 is a demarcati using a network demarcation filter (demarcati) 〇n fiher) circuit diagram, which uses the filter circuit of Figure 3; Figure 8 is a circuit diagram of a third embodiment of the impedance blocking filter circuit according to the principle of the present invention; Figure 9 is a circuit diagram according to the principle of the present invention A schematic circuit diagram of the fourth embodiment of the impedance blocking filter circuit; FIG. 10 (a) is a plan view of a dual coil inductor element in which one or two reed switches are enclosed, which is used in the eighth The filter circuit of Figure 9 and Figure 9; Figure 10 (b) is a side elevation view of the dual coil inductor element of Figure 10 (a); Figure 11 (a) is a diagram of a single inductor and a A single reed switch is a plan view of a current sensor device covered inside, and is selectively used in the filter circuits of FIGS. 8 and 9; 91650 · ϋ ϋ fai —.1 · Βϋ · ϋ Hal MmmmM vn memMm tmamm 1 ϋ I— an ^ ^ I 1 -mn tmtmm tmmw emmmme «· ϋ IA: port (please read the precautions on the back before filling this page) 480865 A7 V. Description of the invention (8 Figure 11 (b) is the side of the current sensor device in Figure n (a) Front view; (Please read the precautions on the back before filling out this page) Figure 12 is a schematic circuit diagram of the fifth embodiment of the impedance blocking filter circuit using a multi-segment cylindrical bobbin structure; ~ Figure 13 is a multi-segment type A schematic diagram of a sixth embodiment of a cylindrical bobbin impedance blocking wave circuit; Figure 14 (a) is a side view of a multi-segment cylindrical bobbin structure for the filter circuit of Figures 12 and 13; Figure (b) is a schematic diagram of the circuit of the multi-segment cylindrical bobbin structure of Figure 14 (a), and Figure 15 is a schematic circuit diagram of a seventh embodiment of the impedance blocking filter circuit according to the principle of the present invention; 16 (a) is a bottom view of another form of double-coil inductor element in which two reed switches are enclosed; FIG. 16 (b) is a double-coil inductor of FIG. 16 (a) Side elevation view of the component; printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Impedance of blocking transistor switching circuit of an eighth embodiment of a filter circuit schematic embodiment; graph 18 has a switch suppression circuit schematic of a ninth embodiment of the filter circuit impedance of blocking circuit. Description of component symbols 1 〇 Telecommunications system on the client side 12 General Administration 14 The size of this paper applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 8 91650 Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Consumer Cooperative 480865 A7 B7 V. Description of the invention (9) 16 Telephone line 1 8 Modular cover 20 Switch 22 Internet server 24 Low-pass filter 26 Surge protector 28 Modem 30 High-pass filter 32 Network interface device / surge protection Device 34 indoor wire 36 demarcation device 3 8 personal computer 3 8a second personal computer 40 telephone 41 high-pass filter in ADSL device 42 ADSL device 43 modem in ADSL 42a home network interface equipment 44, 46, 48, 50 RJ-11 socket-plug device 52 base 54 box cover 5 6 printed circuit board 58 bolt 59 '59a, 59b' 59c, 59d, 59e '59f, 59g, 59h Impedance barrier. -------: ------ --- # 衣 -------- Order --------- Line · (Please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 9 91650 Example of printing transmission media for consumer cooperatives of employees of the Intellectual Property Bureau of the Ministry of Economic Affairs i Description of the invention (10) Filter circuit 60 RJ-11 Socket 62 cable 64 RJ-11 plug 66 Top input terminal point of the impedance blocking filter circuit 68 Ring input terminal point of the impedance blocking filter circuit 70 Blocking filter Top output terminal point 72 of the filter circuit Impedance blocking filter circuit Ring output terminal point 74 Current limit circuit system 76 Current limit circuit system-Input terminal point 78 Current limit circuit system-Output terminal point 80 Current limit The second input terminal point of the circuit system 82 The current output second point of the circuit system 84 demarcation filter 86 demarcation filter '' The top input terminal point of the leather device 88 demarcation filter ring end terminal 90 point 泸, The top output terminal point of the wave filter 92 The ring output terminal point of the demarcation filter 110, 112 The cylindrical cover 114 The ferrite core 116, 11 8 Reed switch slot 120 Printed circuit board Via a private paper ruler _ _ —— ——-------- ^ --------- ^ (Please read the precautions on the back before filling out this page) 10 91650 A7 A7 Intellectual Property Bureau, Ministry of Economic Affairs Staff consumption Printed by Fei Cooperative ----- --- B7 V. Invention Description (u) " " — ^ ^ The traditional double red line of the telephone line 1 6 (C0) 12 and the user terminal 14 of the telecommunications system i 〇 敕 之 〇 i block diagram. This telecommunication system 10 adopts a Dali impedance blocking filter circuit constructed in accordance with the present invention's shoulder reading ^ β theory, and each of them is enclosed in a modular cover (h0uSlng) 18. Office 12 includes a parent office exchange 20 and an Internet service provider (ISP) 22. The telephone exchange 20 transmits voice signals to the telephone line 16 via the low-pass filter 24 and the surge protector 26. The Internet service provider 22 transmits the ADSL data signal to the modem 28, and then the signal is transmitted to the telephone line 16 via the high-pass filter 30 and the surge protector 26. It should be understood that the voice signal of the telephone exchange 20 and the data signal of the ADSL 22 ADSL can be transmitted to the telephone line 16 at the same time. Further, the voice signal (spee is called in the frequency band between 300 and 3400hz, and the ADSL data signal is in the frequency band between 20khz and 1. lMhz. The client 14 includes a network interface device (Network InterfaCe Device, NID) / surge protector device 32, whose input end is connected to the incoming telephone line 16 and the round-out end is connected to the user's internal wiring or indoor wiring 34 via a demarcation RJ_i socket-plug device 36 As you can see, the client further includes a batch of terminal equipment such as a large number of telephones 40. Sometimes, the computer user will receive the adsl data signal transmitted from the iSp22 to download information from the Internet to the personal computer 38. In order to connect the Internet The download of the information is optimized. The user can purchase and install the ADSL network interface device 42 to connect between the computer 38 and the RJ-11 socket-plug device 44. The ADSL network interface device 42 includes a connection to the RJ-11 device. 44 high-pass filter 41, and connected to a computer 38 j This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)

I .: ----- (Please read the notes on the back before filling this page} Order --------- line; 11 91650 480865 A7 V. Description of the invention (12) Data modem 43. Rj The -u device 44 is connected to the indoor wire 34 to receive the ADS1 signal from the telephone line 16. However, a large number of telephones can be seen (please read the precautions on the back before filling this page) 40 also via the RJ_11 device 46, 48 and 50 and connected to the same indoor wire 40. If the impedance blocking filter circuit 59 of the present invention is not used, the output impedance of each telephone 40 will be connected in parallel with the input impedance of the ADSL device 42. Because the output impedance of the telephone is easily subject to Due to, for example, the transition from hanging the microphone `` to picking up the microphone '' and exhibiting an open circuit, short circuit 'capacitive, inductive, resonant, or any combination thereof at frequencies above 20Khz, The unstable range can severely affect the rate at which the computer 38 receives the ADSL data signal via the ADSL network interface device 42. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economics, therefore, the 'impedance blocking filter of the present invention The main purpose of the device circuit is to isolate the impedance of the terminal equipment (telephone) from the ADSL device 42 and the indoor wire 34 to eliminate the deterioration of the performance of the ADSL device 42. Further, the impedance blocking filter circuit is used to attenuate the ADSL data # to prevent its non-linear conversion to audio signals. In addition, to make it easier for customers to wear women's clothing, this filter circuit is enclosed in a modular housing 18. As can be seen from Figure 2, the modularity One form of the cover 18 includes a base 52 and a detachable box cover 54. The base has a printed circuit board 56 fixed with bolts 58 and the circuit elements of the filter circuit 59 are embedded thereon. Modularization One end of the outer cover 18 has the entire RJ_u socket 60 structured inside to connect to the telephone. The connection is established when the Rj_n plug (not shown) is inserted into the telephone to the socket 60. The other end of the modular cover 18 has a small piece of paper The Zhang scale is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 public love) 12 91650 480865 A7 V. Description of the invention (13) The length of the electrical environment 62 is extended and terminated by the RJ_u plug ^ Connect to The inner conductor. In particular, the same _M can be connected to the indoor conductor 34 through a wall socket connected to the socket. "RJ-n Figure 3 shows a schematic circuit diagram of the impedance blocking wave filter of the present invention, It is connected in series to the H leather circuit 59 of the indoor wire = fine electric (telephone) in Figure 1. It includes two terminal points that can be connected to the input (top and ring) of the indoor wire 34 via RJ, terminal equipment 64. = Plug and two RJ-H plugs 60 can be connected to the telephone 40 and ring) terminal points 70,72. The filter circuit 59 is composed of an inductor ^, a capacitor C1, and resistors ri, r2. ~ L6, an inductor L5, L3, L1, and a resistor R1 are connected in series at the first input terminal point 66 and the first or The top turns out between the terminal points 70. = The ground inductor 'L6, L4, L2 and resistor R2 are connected in series between the first input terminal point 68 and the second or ring-shaped output terminal point 72. L5 and L6 are each preferably made of ferrite rings. Inductor 13 and "have the same inductance value, and inductor 1mL2 has the same inductance value. Inductance! L1 is common with the first resistor R1 Connected to common point A and the terminal of capacitor 01. Inductor [2 and the second resistor R2 are connected to common point B and the other terminal of the capacitor. Resistors R1 and R2 have the same resistance value. It is pointed out that the main purpose of the impedance blocking filter circuit 59 is to block the impedance of the telephone at frequencies above 20Khz from the indoor wire 34 and prevent the negative performance of the ADSL network device 42 (picture!). In particular, it is between 20khz ADSL data in the band between 1. IMhz No. This paper scales applicable Chinese National Standard (CNS) A4 size (210 X 297 mm) 13,916,505

V. Description of the invention (14) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs It is mainly blocked by inductors L1 and L2. However, it has been encountered that some electric receivers have an input capacitance value of 5nf and can cause resonance impedance in the ADSL frequency band. In order to eliminate this undesirable effect, the capacitor cl is used to reduce any resonance to an acceptable static band (/ ead band) near the frequency of 10Khz. Further, the capacitor C1 additionally attenuates the adSL signal to prevent the telephone impedance from entering the non-linear region and converts the high-frequency adSL signal to an audible signal (audiMe, which can be heard by the user, or to another ADSL band) ADSL interference. When the phone may have other secondary resonances in the frequency band between 20khz and 60khz, the resistors R1 and r2 that can produce a de-Q effect can effectively reduce this undesirable effect. Note the inductor L1 and L2 form two separate inductors to avoid longitudinal impedance (10ngitu din ai impedance) problems and to avoid blocking different impedances. Because inductors L1 and L2 each have their frequency limits (for example, natural resonance (self- resonant) frequency), so there is an inductor [3 and L4 to block the telephone impedance in the frequency band between IMhz and 20Mhz. As will be explained later, when the telephone line home network interface device (Figure 1) is used to connect to For ADSL network interface device 42, inductors L3'L4 are required. Inductors L5 and L6 are provided to block the telephone impedance of the frequency band between 20Mhz and 500Mhz, and it will prevent any TV / FM Problems caused by interference. In order to fully reveal the aforementioned waver circuit, but its purpose is not to limit the use, representative values and component characteristics are identified below. These numbers and components are used in the constructed filter circuit And tested to provide ^ South quality performance. --------------------- Order --------- CPlease read the note on the back first Please fill in this page for more details) This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 14 91650

" TOUOOJ A7

480865 A7 V. Description of the invention (16) (Please read the notes on the back before filling this page} Based on the test of the third-order filter circuit implemented in Figure 4, it can be seen that the frequency above 20Khz can reach a higher frequency. Attenuation. However, it was found that the number of such third-order filter circuits that can be connected to the telecommunications system of Figure 1 is limited to three or four. This is because of the L1, L2, L7, # L8 ^ | The value (in the order of 5-10mH) is less than the inductance value of the inductor in Figure 3, and the capacitance value of C1 (in the order of 33_47nf) in Figure 4 is greater than the capacitor value of Figure 3, and each added filter The additive inductive load caused by the circuit will have a negative impact on audio performance. Therefore, it is found that the optimal operation between voice performance and ADSL performance exists when only three or four filter circuits 59a are installed. Based on Further tests, when the filter circuit in Figure 3 is operating normally, the inventor found that when the phone is switched to the "pick up microphone" state with the howling peak at the ringing signal, a transient problem will occur. This " Pick up the microphone, Causes a spike of current higher than 600mA. Therefore, high current will tend to saturate the inductor, thus immediately reducing the input impedance of the filter circuit 'and therefore the data carried by the ADSL signal transmitted to the interface device 42 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. In order to overcome this current transient problem, the inventor has developed a fast current limit circuit system 74 to prevent the "transition of the microphone". Figure 6 'The current limit protection circuit system consisting of depletion mode N_channnel field-effect transistors (FET) Q1, Q2; resistors Rla, R2a; and rheostats RV1, RV2 Circuit diagram of FETQ1. The drain electrode of FETQ1 is connected to the first input terminal point 76, and the source (S0UrCe) of this paper is in accordance with China National Standard (CNS) A4 (210 X 297 mm) 16 91650 480865 A7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs V. Invention Description (17 ★ ctrode) is connected to one end of the resistor Rla, and In the meantime, the pole (eiecuode) is connected to the other terminal of the resistor Rla. The common point c between the transistor qi and the resistor Rla is also connected to the first output terminal point 78. Similarly, the drain of FETQ2 is connected to The second input terminal point 80, whose source is connected to one terminal of the resistor R2a, and whose gate is connected to the other terminal of the resistor R2a. The gate of the transistor 02 and the resistor have a common point D Also: Connect to the first output terminal point 82. One terminal of the varistor rvi is connected to the drain of the transistor Q1, and the other terminal is connected to the common point C. One terminal of the varistor RV2 is connected to the drain of the transistor Q2, and the other terminal thereof is connected to the common point D. In use, the current limit protection circuit system 74 replaces the resistors R1 and R2 in FIG. 3. The first and second input terminal points 76 and 80 of the protection circuit system 74 can be connected to the common points a and b in FIG. 3, and the first and second output terminal points 78 and 82 of the protection circuit system 74 are connected to the top and Circular output terminal points 70, 72. The transistors Qi and Q2 can be similar to the transistors provided by Supertex with the part number DN2 5 3 0N3. The varistor can be similar to the ZNR type varistor manufactured and sold by Panasonic. The resistors Rla and R2a have the same resistance value, and according to the threshold voltages of the transistors qi and Q2, their magnitudes are in the order of 5-20 Ohms. It should be understood that the transistors Q1 and Q2 have a high tolerance to the current limit, and the resistors R1 a and R2a allow adjustment of the required current limit value. Alternatively, the 'resistor Rla' R2a may have a resistance value of 0 Ohms or it may be removed entirely. During normal “hook up microphone” operation, the transistors Qi and Q2 are guided. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 17 91650 (Please read the precautions on the back before filling in this Page) ----- Order ----! Line 1 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 48U865 A7 -------- ~ __BZ _____ V. Description of the invention (ls) is available and has about 10 〇hms on-resistance. When the power is on, pick up the microphone and enter the state of high ringing voltage (ringing v〇ltage). Due to the influence of the resistors Rla and R2a, the gate-source voltage of the forward FET will become higher. Negative value. Therefore, the resistance of the transistors Q1 and Q2 will become very high, and the current spike can be limited to approximately 70-1000 mA. Transistor Q1 is used to limit the current to the _th direction, and mQ2 is used to limit the current to the reverse direction. Further, the function of the variable resistance r RV2 is a function of the transient protection mechanism to limit the transient state and power short circuit caused by the lightning strike, so as to prevent the FETs Q1 and Q2 from being destroyed or destroyed. Given the continuous increase in the use of home computers and the high demand for access to information from the Internet over the past decade or so, many users will become homes with multiple personal computers. As shown in Figure 1, the client or small business will also typically have a second brain 38a connected to the same house wire 34. In order to achieve high-speed data transmission in the environment of multiple computers, a telephone line home network interface device 42a will be required, which uses indoor wires operating in the frequency band above 5Mhz to connect multiple computers 38, 38a or other data as illustrated Devices with a transmission rate exceeding 10MB / S. When the impedance blocking filter circuit of the present invention sufficiently filters and blocks the telephone impedance from the home network signal in the 5-10 MHz band, however, it will be noted that the home network signal from the main office of the telephone company still passes Nm The surge protection device 32 is connected to a house wire. In order to solve this problem, the inventors have developed a conventional network demarcation filter 84 as shown by the dotted line in FIG. 丨, which is connected to the telephone company entry line via a demarcation unit 36! 6 and user house ------------- install -------- order --------- line (Please read the precautions on the back before filling this page ) This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 public love). 18 91650 Printed by a member of the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives 480865 A7 '-------—-— —_ —_ 5 Explanation of the invention (19) One point of the boundary device (NID / surge protector device 32) between the inner conductors 34. Fig. 7 depicts a circuit diagram of a home network boundary network. The demarcation filter 84 includes two inputs that can be connected to the incoming telephone line via the socket end of the demarcation device 36 of the NID / surge protector device 32 (the top and the magic terminal points 86, 88, 卩 and two via The boundary is equipped with a plug terminal of i% and can be connected to the output point (top and ring) of the indoor wire. The terminal point is 90%. The boundary filter oil consists of six inductors L9_L14 and two capacitors C2 and c3. When used, the demarcation filter is transparent for ADSL data signals with a frequency band between "2" and 2Mhz, but it will produce a greater than side attenuation for signals above 5Mhz. The demarcation filter is also more than 5Mhz The signal in the frequency band provides an inductive input impedance to prevent the home network signal from being downloaded into the telephone line, and to increase data security. From the foregoing detailed description, it can be seen that the present invention is provided with an impedance blocking wave filter circuit for Telecommunication system, which is interconnected between the incoming telephone line and the customer terminal equipment to absolutely block the 20K caused by the customer terminal equipment from 80 network interface equipment and / or home network equipment Impedance at frequencies above hz. The impedance blocker circuit consists of six inductors, two resistors, and a capacitor. When the second-order impedance blocker circuit in Figure 3 and the third-order impedance in Figure 4 The blocking filter and the waver circuit 59a work together normally with absolute blocking-when the phone impedance is above 20Khz, based on additional tests, the inventors found that the disadvantages they encountered include (1) the problem of parallel multiplication capacitors and ⑺When the number of the filter circuits connected in parallel to the “U” telecommunications system increases, the reflected wave loss of the telephone deteriorates. ^ ^ --------- ^ (Please read the precautions on the back before filling this page ) This paper size is in accordance with Chinese National Standard (CNS) A4 specification (21 × χ297 mm) 19 91650 A7 A7 Printed by B7 of the Consumers ’Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (2) All connected to the microphone In the state of the filter circuit of the telephone, the power generation problem will cause a parallel capacitor problem. The reflection loss problem is due to the impedance blocking filtering of the telephone connected to the hand-held microphone. The series inductance of electricity will cause resonance occurring in the 2-5Khz frequency band with the visible capacitance equivalent to the total of the line capacitance and the capacitance of the filter circuit. Further, when the valley increases, this will also cause a lower resonance frequency and Generate phase and cause unbalance of telephonon hybrid. Therefore, the side tone level of the telephone in the state will increase when you pick up the microphone. To overcome this problem, Fig. 8 is provided with a third embodiment of the second-order impedance blocking filter and waver circuit 59b of the present invention. The third embodiment includes all circuit elements for the 3rd to 11th lines except the resistor and μ, and further It includes a reed switch κι and a reflected wave loss correction circuit composed of a first resonance circuit D01 and a second resonance circuit TC2. Specifically, the reed switch K1 and the capacitor Cl are connected in series between the common points A and B. Further, the first-resonance circuit buckle is composed of a first coil inductor W1, a capacitor C3, and a resistor R3 all connected in parallel between the common point A and the top output terminal point 70. Similarly, the first vibration circuit TC2 is composed of a second coil inductor W2, a capacitor C4, and resistors TO and R4, all of which are commonly connected in parallel between the common point B and the ring-shaped output terminal point 72. In addition, a metal oxide (random-㈣ rheostat D1) is optionally provided which is connected to the capacitor q kiosk and connected in parallel with the reed switch K1. The rheostat D1 is used to protect the capacitor to prevent the phone from being hung up by the telephone. The scale of the private paper damaged by the transient state is applicable to China's national i? T5i) A4 size (Q x 297). II ----- I-^ -------- I (Please read the notes on the back first (Fill in this page again) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 480865 A7 B7 --------- V. Description of Invention (21) When in use, when the telephone enters the "pick up microphone" state, the DC loop current will be Flowing, and a DC magnetic field is generated in the first and second coil inductors W1 and W2. This will result in that only the reed switch 1 ^ 1 of the filter circuit 59b of the electric machine connected to the "pick up microphone" state can be turned on or off by the influence of a DC magnetic field. Therefore 'will eliminate the connection to the microphone, the state of all filter circuits in parallel to increase the capacitance. In addition, the first coil inductor W1 and capacitor C3 of the first resonant circuit TC1 will cause the frequency of about 2Khz Resonance. The impedance of the first oscillating circuit TC 1 above the resonance frequency will present a capacitive reactance, which will effectively eliminate the inductive reactance of the filter circuit 59b. The resistor R3 sets the Q value or the slope of the resonance to be good. Matching the effect of the inductive impedance with the filter circuit. In this way, the reflected wave loss of the telephone set in the state of π picked up by the microphone will be effectively reduced, thereby improving the side tone level of the telephone set. Similarly, the second coil inductor W2, the capacitor C4 ', and the resistor R4 of the first resonance circuit TC2 operate in the same manner as the first coil inductor W1, the capacitor C3, and the resistor R3 of the first resonance circuit TC1. Fig. 9 shows a fourth embodiment of the impedance blocking filter circuit 59c of the present invention. The fourth embodiment includes all the circuit elements of the filter circuit 59c of Fig. 8, and the inductors L7 and L8 have been added. The inductor L7 is mutually connected between the common point a and the first oscillation circuit TC1, and the inductor L8 is mutually connected between the common point b and the second resonance circuit TC2. So far, the filter circuit 59c is essentially a third-order chirped waver circuit, which provides better stop band performance than the second-order filter circuit 59b of FIG. .--- · ---------------- I a Ding * II * (Please read the precautions on the back before filling out this page} This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 mm) 21 91650 A7 V. Description of the invention (22). Still referring to Figure 9 'the second dry cyanide capacitor Mκ2 and capacitor 2 C2' have been added successively and the third-order chirped, waver circuit It is converted into an optimized fourth-order waver electricity, so that the full-rate (fUllrate) ADSL modem can work better. In particular, the reed switch K2 is connected in series with the capacitor C2 and connected between the common points C and D. In addition, a metal oxide varistor D2 connected in series with the capacitor Q and connected in parallel with the reed switch K2 is optionally provided. Similarly, the varistor D2 is used to protect the capacitor C2 from being subjected to the state of being on the phone. The transient damage of the telephone. Further, the inductor L9 and the inductor £ 10 are successively added to generate a fifth-order filter circuit. In particular, the inductor L9 is connected to the inductor U at a common point c and the first resonance circuit TC1. Inductor L10 is mutually connected to inductor L8 at common point D and second resonance In addition, the thermal fuse F1 is selectively connected in series with the inductors L5, L3, L1, L7 'L9 and the resonant circuit TC1, and all of them are arranged between the input top terminal point 66 and the output top terminal point 70 For example, the thermal fuse F1 may be electrically connected between the input top terminal point 68 and the inductor [5. Typically, the thermal fuse F1 is physically placed adjacent to the inductor or resistor 'to sense the filter circuit. The maximum temperature of the fuse. F1 provides safety features and will open when the sensed temperature of the filter circuit exceeds a specific trip temperature. The function of the fuse is a safety protection mechanism to prevent the filter circuit from overheating and traversing the phone due to power. Fig. 10 (a) shows a top plan view of a dual winding inductor device T1 used in the filter circuits of Figs. 8 and 9. Fig. 10 (b) This is a side elevational view of the dual coil inductor device. For example, -------------- installation-- (Please read the precautions on the back before filling out this page) Order: 丨 Line · Ministry of Economic Affairs Printed copy of the Intellectual Property Bureau employee consumer cooperative Paper size applies Chinese National Standard (CNS) A4 (210 X 297 mm) 22 91650 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper size applies Chinese National Standard (CNS) A4 (210 X 297 mm 23 A7) V. Description of the Invention (23 kg sees the inductive fasting device T1 including a cylindrical outer cover, which connects the first coil inductor wi of the first vibration circuit tC1, the first coil inductor W2 of the second vibration circuit tc2, and the dry cage. The Dooming η switch K1 and the reed switch K2 are enclosed inside. Fig. 11 (a) depicts a plan view of a current sensor device C S + LTT YZ-IS used in the filter circuit of Figs. 8 and 9. Figure u (b) is a side elevation view of the current sensor device with CS placed on the side. The current sensor device CS has the form of a cylindrical cover 112 and encloses a # 一 电 [and a single dry switch K in it. Obviously, with this technology, two such current sensors can be used. The detector device cs replaces the dual coil inductor device T1 and achieves the same operation function. Because the coils W1, W2, or inductor L are used for dry η switches KI, K2 (K), the reed switch is selected to be able to open at a loop current threshold of approximately 4-20 mA. If the loop current threshold is lower than 14, when the 1 REN phone rings, the reed switch will vibrate, which will shorten the life of the reed switch. On the other hand, if the loop current threshold is higher than 20 mA, in the worst case (for example, the longest cable), the amount of loop current may not be sufficient to turn on. FIG. 12 illustrates the fifth embodiment of the impedance blocking filter circuit 59 (1 of the present invention. The fifth embodiment is substantially the same as the first embodiment of the second-order filter of FIG. 3, except that the resistor has been removed And r2, and a reed switch ruler 1 connected in series with the capacitor C1 between the common points a and B is added. Further, the four single inductors 1 ^, 1 ^, 1 ^ 3, and L4 of Fig. 3 are added. It has been replaced by a multilayer bobbin structure T2. Note that the cylindrical bobbin structure T2 includes a top coil 91650 connected between the inductor L5 and the common point A. ----------------- --- Order --------- line (please read the precautions on the back before filling this page) 480865

V. Description of the invention (24 Dw (corresponds to the inductor Ll 'L2), and a toroidal coil TW (corresponds to the inductors L3, L4) connected between the inductor L6 and the common point B. Further, the tube shape The bobbin structure T2 covers the reed switch KI ′ K2. The top (ring) coil TW (RW) will be used for the inductor L1 (L2) of the ADSL band (30Khz to 2Mhz) and for the medium band (1Mhz to 2〇Mhz) 2 inductor L3 (L4) is combined in a single coil. It has been found that this filter circuit 59d is more economical to manufacture and assemble, but still eliminates the filter connected to the telephone with a microphone-like sadness The problem of increasing the capacitance of the circuit in parallel. Choose a ground, and the reflected wave loss correction circuit including the first resonance circuit TC1 and the second resonance circuit D can be connected to each other between the common points A and B and the output terminal points 70 and 72. The figure shows a sixth embodiment of the impedance filter circuit of the present invention. The sixth embodiment includes all the circuit components of the filter circuit 59d of FIG. 12 and the inductor L7 and the inductor L8 have been added. The inductor L7 is connected to each other Between the common point A and the output terminal point 70 The inductor L8 is connected between the common point B and the output ring terminal point u. The wave filter circuit described so far is essentially the one that produces a better stop band: the first-order filter circuit. Go to Figure 13 'This adds a second reed switch, M disk, and second capacitor C2 to convert the third-order oscillating wave circuit into an optimized waver circuit, so that the full-rate gamma L modem can operate better. Special: Ground, the first reed switch κ2 Μ 第-雷 交 哭 You /, the first electric valley device C2 is connected in series between nodes c and D. Note that the first first reed switch κ2 is also incorporated in the cylindrical spool structure. Τ2. Further, Huakou; _9 plus inductor L9 to inductor L7 and a paper size of the node applies the Chinese national standard busy secretary ^ 1 ^^; _297 public works Ding 91 650 --------- ----- Equipment -------- Order --------- line ---- (Please read the notes on the back before filling this page) Α7 Α7 Intellectual Property Bureau Staff, Ministry of Economic Affairs Printed by the Consumer Cooperative 5. Inventory (25) and also add inductor L10 between inductor L8 and node F. 乂 Transform the four 1¾ filter circuit into a fifth-order filter. Circuit. Figure 1zKa) shows a side view of the coiled bobbin structure T2, which has multiple sections from S1 to S4, and is used in the circuits of Figures 12 and 13. Figure i4 (b) is shown in Figure 14 (a) Schematic diagram of the cylindrical bobbin structure 12. The cylindrical bobbin structure includes a first narrow section S1 where the inductor L3 is wound on, a first wide section S2 where the inductor L1 is wound on, and an inductor l4 The second narrow section S3 wound on it, and the second comparison section S4 wound on the inductor L2. The inductors li and L3 are combined on the same coil, and are represented by the top coil TW of Fig. 14 (b). Similarly, the inductors L2 and μ are combined on one coil, which is also represented by a loop coil RW. The cylindrical bobbin structure T2 specially designed by the present inventor includes a narrow section S1 (S3) of a higher frequency portion (for example, inductors L3, L4) on which a coil is wound. Because this will have a lower winding capacitance to get the maximum usable frequency range. The cylindrical bobbin structure is further decomposed into multiple sections, and the starting end of the top (ring) coil TW (RW) on pin 丨 (pin 5) will be farther away from the top on pin 4 (pin 8) ( Loop) The end of the coil. Therefore, the mutual capacitance between the coils will be reduced, thereby increasing the usable frequency range of the coils. The first reed switch κ and pins 2 and 7 are arranged at the center of the cylindrical bobbin structure T2 so that they can be opened by the coils TW and RW. Further, the second reed switch and the pins 3 and 6 can also be arranged at the center of the gas bobbin structure, and can be turned on by the same coils TW and RW. -11 n I— nn «ϋ n 11 ί ϋ an— ann > ϋ ϋ _1 1 ·· — · ϋ ^ I an nm I 11 I n I (Please read the notes on the back before filling this page) The impedance blocking filter circuit 59c in Fig. 9 operates effectively to prevent

A7

Pairs of telephones that block more than 20khz γ 480 865 V. Description of the invention (26) When the electrical impedance is found, the inventor found that in some cases transient or voltage spikes will be generated and fed back to the end of the telephone device Point to the line, so that the ADSL signal of the data counting machine 43 in Figure 1 is temporarily interrupted. It is used to individually switch the capacitor Γ ^ ^ ^, the opening action of the reed switches K1 and K2 of the electric valley IS Cl, C2 ′ will cause this transient state to occur. In order to solve this switching transient problem, the seventh embodiment of the impedance blocking filter circuit 59f of the present invention is provided in Figs. The seventh embodiment includes all circuit elements for the waver circuit of FIG. 9 and further includes a switching suppression circuit core composed of inductors L13, L14 and capacitor C5. In particular, the 'inductor L13 is connected in series to the inductor between u and common point eight. The inductor HL14 is connected in series between the inductor L2 and the common point 5. Capacitor C5 is connected across the junction of inductors L1, L13 and the junction of inductors ... L14. Note that the inductors υ and μ can be selectively used. In use, when the phone enters the state of “pick up the microphone,” the DC loop current will flow, and a DC magnetic field will be generated in the first and second inductors W1, w2. This will cause the connection to the “full wish” Afc The reed switch κΐ, K2 of filter circuit 59f of the same-like evil phone is changed from Kishi # cut, and 疋 is turned on or off by the DC magnetic field. Therefore, transient spikes will be generated. Instant switch suppression The capacitor C5 of the circuit M will attenuate the generated voltage spikes. Further, the inductors L13 and L14 are used to limit the maximum current that can flow through the reed switches κι and κ2. In this way, voltage spikes will be prevented from entering Telephone terminal

Connect the line to eliminate any possible interruption in the ADSL modem. XX Figure 16 (a) shows another form of dual coil inductor device τ ^ Zhang scale applicable to the Zhongguanjia Standard (CNS) A4 specification ( 21Q x 297 public director) installed -------- order --------- line (please read the precautions on the back before filling this page) Printed by the Employee Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 480865 Printed by A7 B7, Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 5. Rear view of invention description (27), which can be used to replace the inductor device T1 of Fig. 10 (a). Fig. 16 (b) is a side elevation view of the dual coil inductor device of Fig. 16 (a). As noted, the 'inductor device Tla includes a ferrite core 114 formed by a first coil wia, and a second coil W2a having a pair of reed switch slots 116, 118. The reed switches Kla, K2 are initially placed on the printed circuit board 120. Furthermore, the ferrite core 114 is placed on the reed switch, so that its wires can be inserted into the iron grooves 116, 118. Then, the coil wire is soldered to the reed switch to firmly hold the inductor device Tla on the printed circuit board 120. Fig. 17 shows an eighth embodiment of the impedance blocking filter circuit 59g of the present invention. The eighth embodiment is substantially the same as the third-order filter circuit of FIG. 9 except that a pair of transistors Q1 and Q2; a resistor R5; a capacitor C1, C5'C6; and a metal oxide or stone varistor D3, D4 Replace the dry switch KI ′ K2; capacitors C1, C2; rheostats D1, D2. In addition, inductors L5 and L6 in Figure 9 have been removed. In particular, the collector of 'transistor Q1 is connected to common point F, its base is connected to common point F via varistor D3, and its emitter is connected to common point e. The collector of transistor Q2 is also connected to common point F, its base is also connected to common point E, and its emitter is connected to common point b. The resistor ruler 5 and the capacitor C6 are connected in parallel and are mutually connected between the common points B and E. The varistor D4 is connected between the junctions of the base and emitter of Q1 and Q2. Capacitor 匸 6 is connected between common point A and common point B. Capacitor C1 is connected between common points A and F. When in use, 'When the phone enters the state of' pick up the microphone ', 2〇πA -------------------- Order ----------- --- line (please read the notes on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 27 91650 A7 B7 V. Description of invention (28) (Please read first Note on the back, please fill out this page again) = The loop current will cause the transistor ⑴ or the H current direction 隹 to conduct. Due to the AC bell and the audio band signal, the transistor ^ or ⑴ = can: the outflow or inflow Current. The actual, intrinsic silver σ point of the reverse collector current capacitor. It should be understood that when the varistor D4 is represented as a component, it can be configured by two positive directions: It is formed by a biased diode to protect the base and emitter m of the transistor Q ^ Q2. The varistor D3 is also used to protect the transistors Ql and Q2, and its voltage can be as low as 6-8 volts' To prevent clamping of audio signals, or up to 200 volts to prevent ringing signals. Capacitor C5 is used to attenuate any voltage spikes that may occur. The resistor R5 is used to set the threshold power of the transistors Qi and Q2, "L. Electric Valley benefit C6 is used to pass the transistor to produce a good vertical balance and prevent ringing and pulses during dialing. Intellectual Property of the Ministry of Economic Affairs The ninth embodiment of the economical impedance filter circuit 59h of the present invention is shown in FIG. 18, which is printed by the bureau ’s consumer cooperative. The ninth embodiment is similar to the fifth embodiment in FIG. 12, except that the The double-coil ferrite core inductor device Tla of Fig. 16 (a) replaces the double-coil inductor T2. Further, the switch suppression circuit 7 of Fig. 15 has also been added. It will be noted that the inductor l 1 3 Interconnected between the inductor coil TWA and common point A of the ferrite inductor device Tla; inductor L14 is interconnected between the inductor coil RWA and common point B; the capacitor C5 is connected across the inductor coils TWA and RWA Between. The inductors L5 and L6 in Figure 12 have been removed. In this simplified filter circuit 59h, there is no reflection wave loss correction circuit. It has been found that the filter circuit 59h is economical to manufacture and assemble , But the phone is "hang up" Capacitor C 1 is still turned off in the normal state, resulting in acceptable reflected wave loss and side. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 28 91650

^ 0U〇OJ Λ7 V. Description of the invention (29) Choose 14 also, add inductor L7 between common point A and output terminal point 70, and increase inductor L8 between common u and output terminal point 72. The filter and wave circuit are converted into a third-order filter circuit. The figures and descriptions are currently regarded as the preferred embodiments of the present invention, but those skilled in the art will understand that different changes and modifications can be made and 70 of the two can be replaced equally without departing from the present invention. The true nature of the invention: Many modifications can be made to apply to special situations or the content of the present invention, but not to remove miscellaneous Gan Shi ^ from /, the center of the fence. Therefore, the present invention is not limited to the specific embodiments disclosed in the best mode for carrying out the present invention, but the present invention includes all embodiments falling within the scope of the appended claims. -· ---------------- I ^. • Line · (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 29 91650

Claims (1)

Six A8 B8 C8 D8 patent application scope An impedance blocking filter circuit for telecommunication systems is connected between the incoming telephone line and the customer's terminal equipment to absolutely block the network equipment due to asynchronous digital subscriber line (ADSL) and / Or customer terminal equipment of home network interface equipment, the impedance of frequencies above 20khz, and the filter circuit includes: the first and the first connected in series between the first input terminal point and the first #same point 2. A third inductor; one end of the first inductor is connected to the first output terminal, and the other end of the first inductor is connected to one end of the second inductor. The other end of the inductor is connected to the first common point; the third and fourth inductors connected in series between the second input terminal point and the second common point; the second inductor described One end point is connected to the second input terminal point, and the other end point is connected to the fourth terminal of the fourth inductor. The other end point is connected to the fourth inductor, and the other end point is connected to the first input terminal point. Two things in common The switching mechanism has a first terminal and a second terminal, and is responsive to being used to electrically connect the office; + junction. Sending a DC loop current of the first terminal and the second terminal, The valley device has a first end point connected to the first common point, a second end point connected to the first end of the switching mechanism, and a second end point of the switching mechanism. Connect to said second common point; ------ 1 ----- I -------- ^ --------- C Please read the lacquer on the back first Fill in the tribute for the event, printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Mange x 297 mm) 30 91650 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, patent application scope points, 1 inductor, the first end of which is connected to the first common terminal, the potential end of which is connected to the first output terminal point, and the first Six inductive connections: the terminal is connected to the second common point, the second terminal is connected to the second output terminal point, and the second switching mechanism has a first terminal and a second terminal, and is connected to A direct loop current between the first terminal and the second terminal; a second capacitor whose first terminal is connected to the sixth inductor: 'i.e. 1 ^ i and whose second terminal is connected to The first terminal of the second switching machine *, and the second terminal of the second switching mechanism is connected to the fifth inductor connected to the second node; the switch suppression circuit mechanism Connected to the first and second 'between the same points' to prevent the transient feedback caused when the first and second switching mechanisms are turned on from entering the telephone line; and the correction circuit mechanism Connected to the first node, the second node, and the output terminal. In order to effectively reduce the reflected wave loss caused by the inductive impedance when the customer terminal equipment enters the "pick up microphone" state. 2. Ruo Shenqing's patent scope! The impedance blocking filter circuit of the item, wherein the correction circuit mechanism is composed of a first resonance circuit and a second resonance circuit, and the first ringing circuit is composed of all the first-coil inductors connected in parallel. A resonance capacitor and a first resonance resistor are connected between the first node and the first output terminal point. The second resonance circuit is connected in parallel by all Paper size applies Chinese National Standard (CNS) A4 regulations x 297 mm) 31 91650 (Please read the precautions on the back before filling this page) --------- Order -------- -Line II -I 1.nnn480480865 Sixth, the scope of the patent application: The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed 91650 together with the second coil inductor, the second resonance capacitor, and the second vibration resistance resistor, and the second resonance circuit is connected to the Between the second point and the second output terminal. 3 · If the impedance blocking filter circuit of item 2 of the patent claim is cleared, further including a seventh inductor, the first terminal of the seventh inductor is connected to the fifth inductor at the first Node, and its second terminal is connected to the first resonant circuit and the eighth inductor, this eighth inductor is crying _ W one terminal is connected to the sixth inductor in the first "The first terminal is connected to said second resonant circuit. 4. The impedance blocking filter circuit according to claim 3, wherein the first switching mechanism includes a first reed switch, and the second switching mechanism includes a second reed switch. The impedance blocking filter circuit according to claim 4 of the patent scope, wherein said first coil in said first resonance circuit, said second coil in said second resonance circuit, said The first reed switch and the second reed switch are arranged in a double-coil inductor structure. For example, it is stated that the impedance blocking filter circuit of the fifth target range of the patent, wherein the first coil and the first reed switch in the first resonance circuit are arranged in the first current sensing device, The second coil and the second reed switch in the second vibration circuits are all arranged in a second current sensing device. 7. If the impedance-blocking slave circuit of item 1 of the scope of the patent application, the step-by-step has been included in the connection with the mentioned —inductance @ _ 联 and the nth paper standard of Xiaosuo a. CNS) A4 specifications n In n ϋ nnn I n ϋ nn I nnn It nnn, I MM · * IIIM ·· Zu (please read the precautions on the back before filling this page) C8 ---- ~~ — ^ ___ 6. The first metal oxide or silicon varistor connected in parallel with the patent application scope and the second ferrite core or stone varistor connected in series with the second inductor and in parallel with the second switching mechanism. 8. The impedance blocking filter circuit according to item 7 of the patent application scope, wherein the switch suppression circuit mechanism includes a ninth inductor, a tenth inductor, and a third capacitor. 9. The impedance blocking filter circuit according to item 8 of the scope of patent application, wherein a first terminal of the ninth inductor is connected to the second inductor and a second terminal of the ninth inductor is connected to the second inductor. A ninth inductor, and the tenth inductor has a first terminal connected to the fourth inductor and a second terminal connected to the sixth inductor, and the third capacitor Its first terminal is connected to the junction of the second inductor and the fifth inductor and its second terminal is connected to the junction of the third inductor and the sixth inductor. 1 〇 · —An impedance blocking filter circuit for telecommunication systems is connected between the incoming telephone line and the terminal equipment of each household to absolutely block the equipment due to asynchronous digital private line (ADSL) and / or home network The impedance of the frequency above 20khz caused by the customer terminal equipment of the interface equipment, and the filter circuit includes: first, second, and third inductors connected in series between the first input terminal point and the first common point; One end of the second inductor is connected to the first input terminal point, the other end of the second inductor is connected to one end of the second inductor, and the other end of the second inductor is Click the link to the said paper size to apply the Chinese National Standard "CNS" A4 Regulation (210 X 297 Public Love) " ~ --- 33 91650 (Please read the precautions on the back before filling this page) Φ Order --------- Line II Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs nnnn I 48〇 ^ 65 A8 B8 C8 D8 The scope of patent application is a common point Φ Φ, economy 邡 wisdom and wealth are connected in series At the end of the second input The third and fourth inductors between the point and the second common point; the third inductance m point is connected to the second input terminal point: the other end is connected to one end of the fourth inductor Point, and the fourth Lei Xian crying and injustice causes its other end point to be connected to the second common point; a transistor switching mechanism is connected between the first and second common points, And responding to the DC loop current to eliminate the parallel capacitance caused by the ripple n circuit of the telephone connected to the "hung microphone" state; the fifth inductor, the first terminal of which is connected to said first common point and Its second terminal is connected to the first output terminal point; and the sixth inductor I is: the first terminal is connected to the second common point and its second terminal is connected to the first round-out terminal point; and the correction circuit The mechanism is interconnected between the fifth and sixth inductors and the wheel-out terminal point, so as to effectively reduce the inductive impedance caused when the customer's terminal-ready to enter and pick up the microphone. Reflected wave attenuation. U · If applying for patent _ 10 items Impedance blocking filter circuit, wherein said transistor switching means comprises a pair of transistors, a resistor, a first - and second capacitors, and first and second varistors Pui 34 9165 (------------ I ---- I --- Order --------- (Please read the precautions on the back before filling this page) 480865 A8 B8 C8 D8 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 6. The scope of the patent application for the first resonance circuit described above is all connected in parallel between the fifth inductor and the first output terminal point. The coil inductor, the first resonant inductor, and the first spectrum vibration resistor; the second vibration circuit is composed of all the second coils connected in parallel to the sixth inductor and the second output terminal point It consists of an inductor, a second resonant capacitor, and a second resonant resistor. ^ 13.-Kind: The impedance blocking filter μ circuit for telecommunication systems is connected between the incoming telephone line and the customer's terminal equipment for absolute blocking due to The impedance of the frequency above 2 caused by the customer's final preparation of the asynchronous digital private line (ADSL) network equipment and / or network interface equipment, the wave filter circuit includes: "connected in series with the first input terminal point and The first and second inductors between the points; To the first input terminal point, its other-end point is connected to one end point of the second inductor, and the second inductor 'its other-end point is connected to the first common point Points; third and fourth inductors connected in series between a second input terminal point and a second common point; said third inductor, one end of which is connected to said second input terminal point 'its other- The terminal is connected to one of the fourth inductors, and the other end of the fourth inductor is connected to the second common point; the first switching mechanism has a first terminal With the second endpoint, and inverse 1 paper size applies to the Chinese country ¥ ^ standard (ci ^ x4 specifications (210 \ 297 mm) Φ -------- ^ ------- 1- ^ 10-1 — Γ! I (Please read the notes on the back before filling this page) -nnnn flu nnn «35 91650 480865 VI 、 The scope of the patent application should be the DC loop current to electrically connect the first terminal to the second terminal, " the device's first terminal is connected to the first common point, and the first terminal The point is connected to the endpoint of the switching mechanism. The second end point of the switching mechanism is connected to the same point a; and < < Leyi, the switch suppressing circuit mechanism is connected to each other between the common points in order to prevent Cen Di / 1. The first transient return to the entry; the first switch 14 ·: = in the range of the impedance range of the impedance blocker circuit, into a fifth electrical device, the first terminal is connected To the first-to-the-th: the first terminal of the sand is connected to the first output terminal point, and the sixth inductor, the first terminal of which is connected to the first-to-second point is connected to the second output terminal point. " ~, At the same point, the second terminal κ is the impedance blocking filter circuit of the scope of application for patent No. 14; the first switching mechanism includes one, the range ... one or two electrical ... The inductor and the reed switch are arranged in a dual-coil ferrite core inductor element. Π. If the impedance blocking wave circuit of item 13 of the scope of the patent application is applied, a step = a metal oxide varistor connected in series with the first capacitor and connected in parallel with the first switching mechanism. L scale applies: National Standard (CNS) A4 specification (210 X 297) ^ -11 (Please read the notes on the back before filling out this page).-Line.