KR100198415B1 - 카드착탈상태에 따라 임피던스값이 조정되는 버스종단회로 - Google Patents
카드착탈상태에 따라 임피던스값이 조정되는 버스종단회로 Download PDFInfo
- Publication number
- KR100198415B1 KR100198415B1 KR1019960067646A KR19960067646A KR100198415B1 KR 100198415 B1 KR100198415 B1 KR 100198415B1 KR 1019960067646 A KR1019960067646 A KR 1019960067646A KR 19960067646 A KR19960067646 A KR 19960067646A KR 100198415 B1 KR100198415 B1 KR 100198415B1
- Authority
- KR
- South Korea
- Prior art keywords
- termination circuit
- bus
- card
- termination
- control unit
- 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.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/1204—Distributed RC filters
Landscapes
- Dc Digital Transmission (AREA)
Abstract
Description
Claims (2)
- 시스템의 동작에 관계되는 카드의 착탈상태를 검출하는 카드검출부(31)와; 상기 카드검출부(31)에 접속하여 카드검출부(31)에서 검출된 정보로부터 탈장된 시스템의 동작에 관계되는 카드의 수량과 위치를 판단하여 종단회로선택신호를 생성하여 출력하는 종단회로 선택제어부(22)와; 각각 임피던스값을 달리하는 N개의 종단회로를 포함하는 2개의 종단회로 블록(24)과; 상기 종단회로 선택제어부(22), 종단회로 블록(24) 및 버스(41)양단에 접속하여 종단회로 선택제어부(22)로부터 출력되는 종단회로선택신호에 따라 종단회로를 버스(41)에 연결하는 2개의 종단회로 선택부(23)로 구성되는 것을 특징으로 하는 버스종단회로.
- 제1항에 있어서, 상기 카드검출부(31)는 종단회로 선택제어부(22)에 각각 접속되고 시스템의 동작에 관계되는 카드가 실장될 때 전기적으로 시스템의 동작에 관계되는 카드의 접지선에 접촉되는 종단회로 슬롯접촉부(34)와; 상기 슬롯접촉부(34)에 접속되고 타단은 공급전원(Vcc)에 접속된 저항 R(32)와; 상기 저항 R(32) 및 슬롯접촉부(34)에 접속되고 타단은 접지된 커패시터 C(33)으로 구성되는 것을 특징으로 하는 버스종단회로.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960067646A KR100198415B1 (ko) | 1996-12-19 | 1996-12-19 | 카드착탈상태에 따라 임피던스값이 조정되는 버스종단회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960067646A KR100198415B1 (ko) | 1996-12-19 | 1996-12-19 | 카드착탈상태에 따라 임피던스값이 조정되는 버스종단회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19980048985A KR19980048985A (ko) | 1998-09-15 |
KR100198415B1 true KR100198415B1 (ko) | 1999-06-15 |
Family
ID=19488998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960067646A Expired - Fee Related KR100198415B1 (ko) | 1996-12-19 | 1996-12-19 | 카드착탈상태에 따라 임피던스값이 조정되는 버스종단회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100198415B1 (ko) |
-
1996
- 1996-12-19 KR KR1019960067646A patent/KR100198415B1/ko not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR19980048985A (ko) | 1998-09-15 |
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Legal Events
Date | Code | Title | Description |
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A201 | Request for examination | ||
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19961219 |
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PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19961219 Comment text: Request for Examination of Application |
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PG1501 | Laying open of application | ||
E701 | Decision to grant or registration of patent right | ||
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Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 19990223 |
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Comment text: Registration of Establishment Patent event date: 19990227 Patent event code: PR07011E01D |
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