Software distribution system and software receiving terminal apparatus

Abstract

A terminal apparatus has a reception unit for receiving a data group or a program group distributed from a satellite or a ground distribution system, and an update sequence management unit. The update sequence management unit searches data or a program of the terminal apparatus to be updated and data or a program necessary for updating the data or the program of the terminal apparatus, from the data group or the program group, determines an update sequence of the searched program or data, and updates the program or data of the terminal apparatus in accordance with the determined update sequence.

1 . A software update system comprising: 
 a station for distributing a distribution software list in advance of distributing a data group or a program group for a terminal apparatus by using a broadcasting system or a distribution system; and    the terminal apparatus for automatically updating a data group or a program group of the terminal apparatus by using the data group or program group distributed from the station and the distribution software list,    wherein said distribution software list describes therein a name of the program group or data group to be distributed, a distribution time of the program group or data group to be distributed, a name of compatible software necessary for operation of a program or data of the program group or data group, a name of a program or data of the program group or data group before update, and a name of a program or data of the program group or data group after update.    
   
   
       2 . A software update system according to  claim 1 , wherein said station includes a reception unit for receiving update contents of software for said terminal apparatus transmitted therefrom, and an update contents management unit for managing the update contents of the software for said terminal apparatus.  
   
   
       3 . A software update system according to  claim 1 , wherein said station further includes a distribution unit for distributing software to said terminal apparatus along a zenith direction.  
   
   
       4 . A software update system according to  claim 1 , wherein map information, navigation software, or system software of a vehicle information terminal is updated.