Charging and communication cable system for a mobile computer apparatus

Abstract

A charging and communication cable system for a handheld computer system is disclosed. The charging and communication cable system includes a first interface for connecting to the handheld computer system, a second interface for connecting to another computer system, and a third interface for coupling to a charger system. In one embodiment, the third interface used to coupled to a charger system is the same as the interface on the handheld computer system such that the charger may be coupled to the charging and communication cable system or directly to the handheld computer system.

1 . A charging circuit for a handheld computer system, said charging circuit comprising: 
 a battery;    a first transistor for charging said battery;    a charging control circuit for controlling said first transistor; and    an indicator circuit, said indicator circuit powered by said battery using leakage current passing through said first transistor when said transistor is turned off.    
     
     
         2 . The charging circuit of claim  15  wherein said indicator circuit comprises a light emitting diode.  
     
     
         3 . The charging circuit of claim  15  wherein said first transistor comprises a field effect transistor.  
     
     
         4 . The charging circuit for a handheld computer system of claim  15 , said charging circuit further comprising: 
 a second transistor for controlling said indicator circuit.    
     
     
         5 . The charging circuit for a handheld computer system of claim  15 , said charging circuit further comprising: 
 a processor for controlling said charging control circuit.    
     
     
         6 . The charging circuit for a handheld computer system of claim  18 , said charging circuit further comprising: 
 a processor for controlling said second transistor.