发明名称 |
Power supply control device, image forming apparatus, and method of controlling power supply |
摘要 |
A power supply control device includes an electrical power generating unit that generates electrical power and supplies the generated electrical power to an electronic device having a nonvolatile memory and a control unit; a switching unit that monitors a voltage of electrical power supplied to the electronic device, and switches such that, when the voltage is less than a predetermined threshold value, the electrical power is supplied to the control unit and is not supplied to the nonvolatile memory; and a capacitor that maintains, when the electrical power is switched to be supplied to the control unit, a voltage applied to the nonvolatile memory for a period of time during which writing of data to the nonvolatile memory can be completed. |
申请公布号 |
US8874278(B2) |
申请公布日期 |
2014.10.28 |
申请号 |
US201012890030 |
申请日期 |
2010.09.24 |
申请人 |
Ricoh Company, Limited |
发明人 |
Kitakawa Takehisa |
分类号 |
G05D5/00;G06F1/30;G06F11/14;G06F13/00;G06F1/00;G06F11/20 |
主分类号 |
G05D5/00 |
代理机构 |
Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A power supply control device comprising:
an electrical power generating unit that generates electrical power and supplies the generated electrical power to an electronic device having a nonvolatile memory and a control unit; a switching unit that monitors a voltage of electrical power supplied to the electronic device, and switches such that, when the voltage is less than a predetermined threshold value, the electrical power is supplied to the control unit and is not supplied to the nonvolatile memory; and a capacitor that maintains, when the electrical power is switched to be supplied to the control unit and not to be supplied to the nonvolatile memory, a voltage applied to the nonvolatile memory for a period of time during which writing of data to the nonvolatile memory can be completed. |
地址 |
Tokyo JP |