Train communication network
First Claim
1. An access point for a communication network, comprising:
- a communications processor configured to receive signals from a different access point of the communication network;
a cable connected to the communications processor;
at least one attenuator connected to the cable upstream of the communications processor and configured to selectively attenuate incoming signals received via the cable before the incoming signals are received by the communications processor; and
a transmission amplifier connected to the cable downstream of the communications processor and configured to amplify outgoing signals generated by the communications processor by a factor of 3, wherein the transmission amplifier is further configured to attenuate incoming signals by a factor of ⅓
.
6 Assignments
0 Petitions
Accused Products
Abstract
An access point for a communication network is disclosed. The access point may have a communications processor configured to receive signals from a different access point of the communication network, a cable connected to the communications processor, and at least one attenuator connected to the cable upstream of the communications processor. The at least one attenuator may be configured to selectively attenuate incoming signals received via the cable before the incoming signals are received by the communications process. The access point may also have a transmission amplifier connected to the cable downstream of the communications processor and configured to amplify outgoing signals generated by the communications processor by about 3:1.
-
Citations
18 Claims
-
1. An access point for a communication network, comprising:
-
a communications processor configured to receive signals from a different access point of the communication network; a cable connected to the communications processor; at least one attenuator connected to the cable upstream of the communications processor and configured to selectively attenuate incoming signals received via the cable before the incoming signals are received by the communications processor; and a transmission amplifier connected to the cable downstream of the communications processor and configured to amplify outgoing signals generated by the communications processor by a factor of 3, wherein the transmission amplifier is further configured to attenuate incoming signals by a factor of ⅓
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A communication network, comprising:
-
a first access point having a first communications processor, at least a first attenuator, and a first transmission amplifier; a second access point having a second communications processor, at least a second attenuator, and a second transmission amplifier; and a cable connecting the first and second access points, wherein; the first and second transmission amplifiers are connected to the cable between the first and second communications processors and configured to amplify outgoing signals generated by the communications processors a factor of 3; and the first and second communications processors are configured to scale the outgoing signals before amplification by the first and second transmission amplifiers. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
-
18. A train consist, comprising:
-
a first locomotive; a second locomotive; a tender car; a first access point located on the first locomotive and being configured to control operations of the first locomotive; a second access point located on one of the second locomotive and the tender car and being configured to control operations of the one of the second locomotive and the tender car; and a cable connecting the first and second access points to communicate signals associated with coordinated control over operations of the first locomotive, the tender car, and/or the second locomotive, wherein each of the first and second access points includes; a communications processor configured to receive signals; at least one amplifier located to receive and selectively attenuate the signals by a factor in the range of ½
to ⅓
to approximately 3V before the signals are received by the communications processor;a voltage clamp configured to selectively limit a strength of the signals to 5V; and a transmission amplifier configured to amplify outgoing signals generated by the communications processor by a factor of 3 up to 12V.
-
Specification