×

Method for controlling flash apparatus, wherein preliminary flashing is performed one time

  • US 20040119879A1
  • Filed: 12/09/2003
  • Published: 06/24/2004
  • Est. Priority Date: 12/14/2002
  • Status: Active Grant
First Claim
Patent Images

1. A method of performing preliminary flashing for a camera, the method comprising:

  • generating a first readout signal pulse;

    performing preliminary flashing at a time t1 after the rising edge of the first readout signal;

    generating the rising edge of a second readout signal pulse at a time t2 that is after time t1;

    measuring a first average brightness at time t2;

    ending preliminary flashing at a time t3 after time t2;

    generating the rising edge of a third readout signal pulse at a time t4; and

    measuring a second average brightness at time t4.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×