Abstract: The optical scanning device includes: a movable portion having a reflecting mirror; an intermediate frame; a support portion enclosing the intermediate frame; a first torsion bar connecting the movable portion and the intermediate frame to each other; a second torsion bar connecting the intermediate frame and the support portion to each other; a first wire formed on the movable portion; a second wire formed on the intermediate frame; a magnet; a first drive waveform generation unit configured to supply a first drive signal to the first wire; a second drive waveform generation unit configured to supply a second drive signal to the second wire; and a correction signal generation unit configured to generate a correction signal by shifting a phase of the branch-off first drive signal and multiplying an amplitude of the branch-off first drive signal by a gain, and superimpose the correction signal on the second drive signal.

Abstract: A MUSE-NTSC converter of a relatively simple and small scale circuit design. An oscillation signal from a 28.63636 MHz oscillator (20) is eight times as large as a subcarrier frequency fsc. A Y image processing circuit (17) and a chroma encoder (18) can perform various kinds of processing, such as dividing a frequency of the oscillation signal from the 28.63636 MHz oscillator (20) and the like, to produce a subcarrier frequency. A signal separating circuit (3') receives the oscillation signal from the 28.63636 MHz oscillator (20) as a single system clock and performs some kinds of signal processing which vary from a full wide mode to a zoom mode. Thus, in performing PLL on system clocks in the MUSE mode and the NTSC mode, there may be only one PLL circuit (21) for synchronizing an oscillation signal from a 32.4 MHz oscillator (19) and the oscillation signal from the 28.63636 MHz oscillator (20) in phase.