Patent ID: 8238009
Filing Date: 2012-08-07
Classification: G02B,G09G,H04N

Abstract:
1. A drive signal generator for generating a drive signal which is used for forcibly driving a reflection mirror of an optical scanning element in a non-resonance mode, and is generated by subjecting a saw-tooth signal to low-pass filter processing and notch filter processing, the drive signal generator comprising: a first storage unit which is configured to store data related to a primary processing signal acquired by subjecting the saw-tooth signal to the low-pass filter processing; a parameter decision unit which is configured to decide a parameter for the notch filter processing; a filter unit which is configured to read the primary processing signal from the first storage unit and to generate a secondary processing signal by subjecting the primary processing signal to the notch filter processing using the decided parameter; a second storage unit which is configured to store data related to the secondary processing signal generated by the filter unit; and a drive signal generation unit which is configured to read the data related to the secondary processing signal from the second storage unit by a clock having a predetermined frequency and to generate the drive signal by subjecting the data related to the secondary processing signal to analog conversion.