US 7,538,455 B2
Electronic device, power source control method, ROF system and its power supplying method and remote unit
Masayuki Takami, Hino (Japan); and Yoshiki Namba, Fuchu (Japan)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan)
Filed on Jun. 06, 2006, as Appl. No. 11/446,959.
Claims priority of application No. 2005-167279 (JP), filed on Jun. 07, 2005.
Prior Publication US 2006/0281434 A1, Dec. 14, 2006
Int. Cl. H01H 43/04 (2006.01); H02J 3/14 (2006.01)
U.S. Cl. 307—141  [307/140; 323/351; 323/908] 15 Claims
OG exemplary drawing
 
1. An electronic device to which power can be supplied from a power supply connected with other electronic devices, the electronic device comprising:
a switch unit having an input terminal, an output terminal and a control terminal which is adapted to receive a control signal to connect a circuit between the input terminal and the output terminal;
a number input unit to which unique identification information can be input to set a corresponding delay time; and
a timing unit connected to the power supply and arranged to apply the control signal to the control terminal after the set delay time has lapsed after the power supply has been switched on.