Back to results
US 6,721,006 B1Granted
Digital camera and control method for the same
AssigneeRicoh Company, Ltd.
InventorDaisuke Hata
Life of this patent
Estimating the term…
Abstract
A CPU measures a cycle of a vertical synchronization signal inputted from an IPP based on an oscillation frequency of an internal ceramic oscillator. The CPU corrects the timing of starting the control of an object to be controlled based on the measured cycle of the vertical synchronization signal when the timing of starting the control of the object to be controlled is to be decided based on the vertical synchronization signal as a reference.
Claims15
A digital camera comprising:
- a digital processing means having a first frequency error and for outputting a vertical synchronization signal;
- and
- a control means which controls the operations of the internal components of said digital camera, said control means having
- an oscillating means having a second frequency error greater than the first frequency error and for generating an oscillation frequency;
- a vertical synchronization signal measuring means for measuring a cycle of the inputted vertical synchronization signal based on the oscillation frequency generated by said oscillating means;
- and
- a correcting means for correcting a start time for controlling an object to be controlled based on the measured cycle of the vertical synchronization signal when the timing for start of controls over the object to be controlled is to be decided based on the vertical synchronization signal.
4 more elements
A digital camera comprising:
- a digital processing unit having a first frequency error and for outputting a vertical synchronization signal;
- and
- a control unit which controls the operations of the internal components of said digital camera, said control unit having
- an oscillating element having a second frequency error greater than the first frequency error and which generates an oscillation frequency;
- a vertical synchronization signal measuring unit which measures a cycle of the inputted vertical synchronization signal based on the oscillation frequency generated by said oscillating element;
- and
- a correcting unit which corrects a start time for controlling an object to be controlled based on the measured cycle of the vertical synchronization signal when the timing for start of controls over the object to be controlled is to be decided based on the vertical synchronization signal.
4 more elements
A control method for a digital camera, comprising the steps of:
- outputting a vertical synchronization signal having a first frequency error;
- generating an oscillation frequency having a second frequency error greater than the first frequency error;
- measuring a cycle of the inputted vertical synchronization signal based on said oscillation frequency;
- and
- correcting a start time for controlling an object to be controlled based on said measured cycle of said vertical synchronization signal, when the timing for start of controls over the object to be controlled is to be decided based on said vertical synchronization signal.
2 more elements
Dependencies are inferred from the claim text.