Claims
- 1. An in-vehicle terminal employed in a communication system for downloading programs from a center to in-vehicle terminals, comprising:
a communicating unit communicating with said center; a storage unit in which a program downloaded from said center via said communicating means is stored; a detecting unit detecting whether an ACC power supply has been turned off; and a display unit, when a program is downloaded from said center to said in-vehicle terminal, if said detecting unit detects that the ACC power supply has been turned off, using a +B power supply that is a backup power supply to indicate that downloading is in progress.
- 2. An in-vehicle terminal employed in a communication system for downloading programs from a center to in-vehicle terminals, comprising:
a detecting unit detecting whether an ACC power supply has been turned off; and a suspension unit, when a program is downloaded from said center to said in-vehicle terminal, if said detecting unit detects that the ACC power supply has been turned off, automatically suspending downloading.
- 3. An in-vehicle terminal employed in a communication system for downloading programs from a center to in-vehicle terminals, comprising:
a communicating unit communicating with said center; a storage unit in which a program downloaded from said center via said communicating unit is stored; a detecting unit detecting whether an ACC power supply has been turned off; a backup unit, when a program is downloaded from said center to said in-vehicle terminal, if said detecting unit detects that the ACC power supply has been turned off, using a +B power supply to continue downloading.
- 4. An in-vehicle terminal employed in a communication system for downloading programs from a center to in-vehicle terminals, comprising:
a communicating unit communicating with said center; a storage unit in which a program downloaded from said center via said communicating unit is stored; a detecting unit detecting whether an ACC power supply has been turned off; a storing unit, when a program is downloaded from said center to said in-vehicle terminal, if said detecting unit detects that the ACC power supply has been turned off, storing information indicating a state of downloading attained at that time; and a transmitting unit, when the ACC power supply is restored, transmitting the stored information indicating the state of downloading to said center.
- 5. An in-vehicle terminal employed in a communication system for downloading programs from a center to in-vehicle terminals, comprising:
a communicating unit communicating with said center; a storage unit in which a program downloaded from said center via said communicating unit is stored; a selecting unit selecting suspension of downloading or continuation thereof; a suspension unit, when said selecting unit selects suspension, if it is detected that an ACC power supply has been turned off, automatically suspending downloading; and a backup unit, when said selecting unit selects continuation, if it is detected that the ACC power supply has been turned off, using a +B power supply to continue downloading.
- 6. An in-vehicle terminal employed in a communication system for downloading programs from a center to in-vehicle terminals, comprising:
a communicating unit communicating with said center; a storage unit in which a program downloaded from said center via said communicating unit is stored; a selecting unit selecting suspension of downloading or continuation thereof; a suspension unit, when said selecting unit selects suspension, if it is detected that an ACC power supply has been turned off, autonomously suspending downloading; a storing unit, when said selecting unit selects continuation, if it is detected that the ACC power supply has been turned off, storing information indicating a state of downloading attained at that time; and a transmitting unit, when communication is restarted, transmitting the stored information indicating the state of downloading to said center.
Priority Claims (1)
Number |
Date |
Country |
Kind |
11-009649(PAT.) |
Jan 1999 |
JP |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a Divisional of application No. 09/461,423, filed Dec. 16, 1999, now pending.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09461423 |
Dec 1999 |
US |
Child |
10105359 |
Mar 2002 |
US |