Controlling energizing range of mobile electronic device
AssigneeLenovo (Singapore) Pte.Ltd.
InventorsYoshihiro Takase, Yasumichi Tsukamoto, Shinji Ohishi, Yuichiro Seto
Life of this patent
Estimating the term…
Abstract
An energization range of a laptop PC is controlled for safety component replacement. An EC can communicate with a battery unit to control a FET of the battery unit. In a power-off state, a PWC receives electricity from the battery unit or an AC/DC adapter. In the power-off state, a system of the EC stops. When a housing cover of the laptop PC is opened, a cover switch turns ON. When a logic circuit detects the operation of the cover switch, the PWC controls a DC/DC converter group to activate the system. The EC receiving electricity turns the FET OFF. Then the PWC turns the FET OFF.
Claims20
An electronic device, comprising:
- a housing;
- a detachable housing cover;
- a first control circuit;
- the first control circuit connectable to a DC-side switch of a battery, wherein the DC-side switch controls the electricity supplied to the device via the battery;
- a cover switch that detects the opening of the detachable housing cover with respect to the housing;
- and
- a startup power supply that supplies electricity from the battery to the first control circuit, wherein the first control circuit shifts the DC-side switch to an OFF position when electricity is received from the startup power supply in response to the operation of the cover switch.
A method, comprising:
- detecting a DC-side switch of a battery unit is mounted to a housing of an electronic device;
- the battery unit supplying power that operates a first control circuit of the electronic device;
- and
- operating, in response to operation of a cover switch of the electronic device, the first control circuit to shift the DC-side switch to an OFF position when startup power is received from the battery unit.
An electronic device, comprising:
- a housing;
- a detachable housing cover;
- a battery unit connected to the housing;
- a first control circuit;
- the first control circuit connectable to a DC-side switch of the battery unit, wherein the DC-side switch controls the electricity supplied to the device via the battery unit;
- a cover switch that detects the opening of the detachable housing cover with respect to the housing;
- and
- a startup power supply that supplies electricity from the battery unit to the first control circuit, wherein the first control circuit shifts the DC-side switch to an OFF position when electricity is received from the startup power supply in response to the operation of the cover switch.
Dependencies are inferred from the claim text.