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US 8,412,020 B2Granted
Data processing apparatus and its control method, program, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorIsao Abe
Life of this patent
Estimating the term…
Abstract
This invention provides a disk playback apparatus which can shorten a time from when a power switch is turned on until a startup operation is completed. Even when the power switch of the main body is OFF, if exchange of a disk-like recording medium is detected, management data of the disk is read out and is stored in a buffer memory. When the power switch is turned on for the next time, the management data is read out from the buffer memory without accessing the disk-like recording medium.
Claims10
A recording apparatus comprising:
- a power switch configured to output a power-off instruction to put the recording apparatus in a power-off state and a power-on instruction to put the recording apparatus in a power-on state;
- a writing and reading unit configured to write data to a disk recording medium and to read data from the disk recording medium;
- a detection unit configured to detect attachment of a new disk recording medium to which data cannot be written, the new disk recording medium being detectable by the detection unit when the recording apparatus is in the power-off state;
- a warning unit configured to perform a warning operation;
- and
- a control unit, configured to, in response to an output from the detection unit during the power-off state, control the warning unit to perform the warning operation,
- wherein the control unit automatically controls a power supply unit to supply power to the warning unit to perform the warning operation when the recording apparatus is in the power-off state, and controls the power supply unit to stop supplying power to the warning unit when the warning operation is completed.
4 more elements
A recording apparatus comprising:
- a power switch configured to output a power-off instruction to put the recording apparatus in a power-off state and a power-on instruction to put the recording apparatus in a power-on state;
- a writing and reading unit configured to write data to a recording medium and to read the data from the recording medium;
- a detection unit configured to detect attachment of a new recording medium to which data cannot be written, the new recording medium being detectable by the detection unit when the recording apparatus is in the power-off state;
- and
- a control unit configured to, in response to an output from the detection unit during the power-off state, control the warning unit to perform a warning operation.
2 more elements
A recording apparatus comprising:
- a power switch configured to output a power-off instruction to put the recording apparatus in a power-off state and a power-on instruction to put the recording apparatus in a power-on state;
- a writing and reading unit configured to write data to a recording medium and to read the data from the recording medium;
- a detection unit configured to detect attachment of a new recording medium from which data cannot be read, the new recording medium being detectable by the detection unit when the recording apparatus is in the power-off state;
- and
- a control unit configured to, in response to an output from the detection unit during the power-off state, control the warning unit to perform a warning operation.
2 more elements
A recording apparatus comprising:
- a power switch configured to output a power-off instruction to put the recording apparatus in a power-off state and a power-on instruction to put the recording apparatus in a power-on state;
- an optical beam unit configured to output an optical beam onto an attached disk recording medium;
- a power adjusting unit configured to perform a power adjusting operation on the optical beam output from the optical beam unit;
- and
- a control unit configured to control the power adjusting unit,
- wherein the control unit controls the power adjusting unit to perform the power adjusting operation if a new disk recording medium is attached when the recording apparatus is in the power-on state, and
- wherein the control unit inhibits the power adjusting unit from performing the power adjusting operation if a new disk recording medium is attached when the recording apparatus is in the power-off state.
4 more elements
A recording apparatus comprising:
- a power switch configured to output a power-off instruction to put the recording apparatus in a power-off state and a power-on instruction to put the recording apparatus in a power-on state;
- a writing and reading unit configured to write data to a recording medium and to read the data from the recording medium;
- and
- a control unit configured to control the writing and reading unit,
- wherein the control unit controls the writing and reading unit, if a new recording medium is attached when the recording apparatus is in the power-off state, to read the management information from the new recording medium and, if the power-on instruction is output from the power switch during reading of the management information from the new recording medium, to continue reading the management information from the new recording medium without stopping the reading of the management information from the new recording medium.
2 more elements
Dependencies are inferred from the claim text.