Power-supply controller circuit and image forming apparatus including the same
AssigneeOki Data Corporation
InventorHideki Shinyama
Life of this patent
Estimating the term…
Abstract
A power-supply controller circuit includes: a power-supply switch unit configured to output an ON-signal when manually operated; a switching unit configured to switch ON and OFF an output voltage to a controller unit in response to the ON-signal of the power-supply switch unit; a latching unit configured to latch an ON-state of the switching unit, when the power-supply switch unit outputs an ON-signal under a condition where the switching unit is in an OFF-state; and the controller unit configured to control an unlatching signal to unlatch the ON-state latched by the latching unit when the latching unit is in the ON-state and detects the ON-signal sent from the power-supply switch unit.
Claims11
A power-supply controller circuit comprising:
- a power-supply switch unit configured to output an ON-signal when operated manually;
- a switching unit configured to switch ON and OFF an output voltage to a controller unit in response to the ON-signal of the power-supply switch unit;
- a latching unit configured to latch the ON-state of the switching unit, when the power-supply switch unit outputs an ON-signal under a condition where the switching unit is in the OFF-state;
- and
- a controller unit configured to control an unlatching signal to unlatch the ON-state latched by the latching unit when the latching unit is in the ON-state and detects the ON-signal sent from the power-supply switch unit,
- wherein the latching unit includes:
- a first latch configured to continue to latch the ON-state, while the ON-state is being latched, irrespective of whether or not there is an ON-signal sent from the power-supply switch unit;
- and
- a second latch configured to unlatch the ON-state latched by the first latch.
A power-supply controller circuit comprising:
- a power-supply switch unit configured to output an ON-signal when operated manually;
- a switching unit configured to switch ON and OFF an output voltage to a controller unit in response to the ON-signal of the power-supply switch unit;
- a latching unit configured to latch the ON-state of the switching unit, when the power-supply switch unit outputs an ON-signal under a condition where the switching unit is in the OFF-state;
- and
- a controller unit configured to control an unlatching signal to unlatch the ON-state latched by the latching unit when the latching unit is in the ON-state and detects the ON-signal sent from the power-supply switch unit,
- wherein the latching unit includes:
- a first latch configured to latch the ON-state, the first latch configured to unlatch the on-state in response to the unlatching signal from the controller unit;
- and
- a second latch configured to work in conjunction with the power-supply switch unit in such a way as to transition to the ON state when the power-supply switch unit starts to output an ON-signal and to transition to the OFF-state when the power-supply switch unit finishes outputting the ON-signal.
A power-supply controller circuit comprising:
- a power-supply switch unit configured to output an ON-signal when operated manually;
- a switching unit configured to switch ON and OFF an output voltage to a controller unit in response to the ON-signal of the power-supply switch unit;
- a latching unit configured to latch the ON-state of the switching unit, when the power-supply switch unit outputs an ON-signal under a condition where the switching unit is in the OFF-state;
- and
- a controller unit configured to control an unlatching signal to unlatch the ON-state latched by the latching unit when the latching unit is in the ON-state and detects the ON-signal sent from the power-supply switch unit,
- wherein the latching unit includes:
- a first latch configured to latch the ON-state in response to the unlatching signal from the controller unit;
- a second latch connected to the power-supply switching unit and configured to receive a latching signal output from the first latch;
- and
- a third latch connected to the power-supply switching unit and configured to receive a latching signal output from the first latch.
Dependencies are inferred from the claim text.