Image signal processing device, three-dimensional image display device, three-dimensional image transmission/display system, and image signal processing method

A three-dimensional image display device comprising:

• a determination section performing determination, for each of fields, on a first input image signal as an interlaced signal or a second input image signal as an interlaced signal having horizontal parallax to the first input image signal or both thereof, the determination being concerned with whether an input image signal is an interlaced signal derived from video signal or from pull down-converted film signal;
• deinterlace sections performing deinterlace, for each of fields, on each of the first and second input image signals, through use of interpolation for a video signal or pull down reverse conversion for a film signal, thereby generating a first output image signal as a progressive signal and a second output image signal as a progressive signal having horizontal parallax to the first output image signal;
• and
• a synchronous control section performing synchronous control to the deinterlace sections, based on a determination result of the determination section, such that deinterlace applied to the first input image signal and deinterlace applied to the second input image signal, synchronized with each other for each of fields, are of same type;
• and
• a display section alternately displaying, in time division, left-eye image based on the first output image signal and right-eye image based on the second output image signal.

A three-dimensional image transmission/display system comprising:

• a transmission device transmitting a first input image signal as an interlaced signal or a second input image signal as an interlaced signal having horizontal parallax to the first input image signal;
• and
• a three-dimensional image display device receiving the first and second input image signals transmitted from the transmission device, and performing three-dimensional image display based on the first and second input image signals;
• wherein the transmission device has a parallel-serial conversion section transmitting the first and second input image signals to the three-dimensional image display device in time division, and
• the three-dimensional image display has
• a serial-parallel conversion section separating an input image signal received from the transmission device into the first input image signal and the second input image signal,
• a determination section performing determination, for each of fields, on the first or second input image signal supplied from the serial-parallel conversion section or both thereof, the determination being concerned with whether an input image signal is an interlaced signal derived from video signal or from pull down-converted film signal;
• deinterlace sections performing deinterlace, for each of fields, on each of the first and second input image signals supplied from the serial-parallel conversion section, through use of interpolation for a video signal or pull down reverse conversion for a film signal, thereby generating a first output image signal as a progressive signal and a second output image signal as a progressive signal having horizontal parallax to the first output image signal;
• and
• a synchronous control section performing synchronous control to the deinterlace sections, based on a determination result of the determination section, such that deinterlace applied to the first input image signal and deinterlace applied to the second input image signal, synchronized with each other for each of fields, are of same type, and
• a display section alternately displaying, in time division, left-eye image based on the first output image signal and right-eye image based on the second output image signal.

An image signal processing method comprising steps of:

• performing determination, for each of fields, on a first input image signal as an interlaced signal or a second input image signal as an interlaced signal having horizontal parallax to the first input image signal or both thereof, the determination being concerned with whether an input image signal is an interlaced signal derived from video signal or from pull down-converted film signal;
• performing deinterlace, for each of fields, on each of the first and second input image signals, through use of interpolation for a video signal or pull down reverse conversion for a film signal, thereby generating a first output image signal as a progressive signal and a second output image signal as a progressive signal having horizontal parallax to the first output image signal;
• and
• performing synchronous control in the step of performing deinterlace, based on a determination result in the step of performing determination, such that deinterlace applied to the first input image signal and deinterlace applied to the second input image signal, synchronized with each other for each of fields, are of same type.