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 Title: |
US4403111:
Apparatus for interconnecting data communication equipment and data terminal equipment
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Kelly, Bruce; Weimar, CA
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| Assignee: |
ICOT Corporation, Mountain View, CA
other patents from ICOT CORPORATION (265095) (approx. 1)
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| Published / Filed: |
1983-09-06
/ 1981-07-15
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| Application Number: |
US1981000283415
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| IPC Code: |
Advanced:
G06F 13/38;
H04L 27/00;
H04L 29/00;
H04L 29/06;
H04L 29/10;
H04L 29/08;
Core:
more...
IPC-7:
H04L 25/02;
H04M 1/74;
H04M 3/06;
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| ECLA Code: |
G06F13/38A2; H04L29/06; T04L29/08A1;
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| U.S. Class: |
Current:
178/069.R;
178/002.B;
178/063.R;
375/219;
379/093.05;
Original:
178/069.R;
178/063.R;
179/001.PC;
179/002.DP;
339/156.R;
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| Field of Search: |
178/69 R,69 C,63 R
179/1 PC,2 C,2 DP
375/036
339/154,156,28,29
307/147,148
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| Priority Number: |
| 1981-07-15 |
US1981000283415 |
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| Abstract: |
An interface for connecting data terminal equipment (DTE) to data communication equipment (DCE) is provided which requires no modification to an existing and widely accepted DCE connector and yet which permits data communication according to more recently adopted functional interface standards through the same DCE connector. Specifically, in a single 25-position interconnection configuration for DTE, an interface is provided which supports (1) the EIA Standard RS-232C interface with unbalanced generators and receivers at generally established RS-232C pin assignments at a DCE terminal junction; (2) an RS-449-type interface with balanced generators and receivers with pin assignments at locations incapable of being confused with RS-232C interface connections at a DCE terminal junction; and (3) an RS-449-like interface with balanced generators and receivers in a variety of multiple-point applications. The DTE portion of the interconnection according to the invention includes only an external cable and connector which is provided to the DCE terminal junction. In an RS-232C interconnection, the external cable includes connections jumpering to ground one input of each balanced receiver to allow use of the receiver as an unbalanced RS-232C-type receiver. In both balanced and unbalanced configurations, the cabling to the DCE includes the minimum number of electrical conduits necessary for DTE communication.
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| Attorney, Agent or Firm: |
Townsend & Townsend ;
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| Primary / Asst. Examiners: |
Schreyer, Stafford D.;
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| Maintenance Status: |
E3 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
AU EP JP DE FR GB SE
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| Family: |
Show 10 known family members
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First Claim:
Show all 13 claims |
What is claimed is:
1. An apparatus for interconnecting data terminal equipment (DTE) to data communication equipment (DCE), wherein a multiple terminal electrical connector is mounted to said DCE (herein designated second mounted connector) and wherein means (designated second coupling means) are incorporated in said DCE for coupling specified digital input and output signals between a selected terminal set (herein designated second terminal set) of said second mounted connector and said DCE as standardized transmission and reception signals (herein designated second signals), said apparatus comprising:
- a first multiple terminal electrical connector mounted to said DTE;
- first means incorporated in said DTE for coupling specified digital input and output signals through a first terminal set of said first mounted connector as first standardized transmission and reception signals, said first coupling means being configured to support signals through at least three different signal standards, including said second signals, without switches; and
- a multiple conductor cable having a first termination for connecting to said first mounted connector and a second termination for connecting to said second mounted connector, said first termination having conduit position assignments to said first terminal set which match said first terminal set to one of at least three different configurations of said second terminal set of standardized transmission and reception signals.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 15 U.S. patent(s) that reference this one
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