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Secondary power supply for telematics terminal

  • US 20060173595A1
  • Filed: 12/12/2005
  • Published: 08/03/2006
  • Est. Priority Date: 12/13/2004
  • Status: Active Grant
First Claim
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1. A secondary power supply for a telematics terminal, comprising:

  • a power control unit for controlling a power supply based on a power control signal of the telematics terminal and/or a start-up key signal coupled from the outside;

    a telematics control unit which is operated by power supplied from a secondary power supply unit under the control of the power control unit and controls each of components inside the telematics terminal;

    the secondary power supply unit for supplying the power to the telematics control unit; and

    a rectifying unit for rectifying power from a main power supply unit one more time and protecting the components from a reverse voltage by opening the connection of the main power supply unit and the secondary power supply unit when a voltage level of the secondary power supply unit is higher than that of the main power supply unit.

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