Sony Corporation

Seiko Imai

Toshio Sarugaku

Takaya Hoshino

Naoki Kaneko

Masaharu Tokuhara

Shinichiro Miyazaki

Muzaffar Husain Bin Fakhruddin

An image signal processing unit includes a frame rate conversion circuit performing double frame rate conversion on an input image signal from a first frame frequency to a second frame frequency. When performing frame rate conversion with the motion correction process, a motion vector is determined between a first frame image and a third frame image, and three interpolation frame images are formed through the motion correction process to the first frame image based on the motion vector, and are inserted between the first and third frame images so as to establish the second frame frequency. When performing frame rate conversion without the motion correction process, an interpolation frame image same as the first frame image is inserted between the first and second frame images, and an interpolation frame image same as the second frame image is inserted between the second and third frame images.

Method and unit to process an image signal involving frame rate conversion to improve image quality

There is provided a video signal processing apparatus that makes it possible to realize a favorable display of pictures by increasing the detection accuracy of the video source of an input video signal and by using an appropriate scanning method for an output video signal in accordance with the determined type of video source. The video signal processing apparatus includes video source determining means for determining whether the video source of a video signal is a film source, calculating means for calculating a degree of difference between a picture of a field of the video signal and a picture of a field of a delayed video signal, threshold setting means, comparison means for comparing the degree of difference and a threshold and determining whether the pictures of each field match, and a signal pattern detecting means for detecting a signal pattern of a signal outputted by the comparison means and determining whether the video source is a film source, with the threshold setting means outputting respectively different thresholds in a state where the video source is determined to be a film source and a state where the video source is not determined to be a film source.

Video signal processing apparatus, video signal processing method and video source determining method

To enable a satisfactory suppression of overemphasized component after converting the number of scanning lines of video signal, when the video signal is converted in the number of scanning lines and a high-frequency component at least in a vertical direction of the converted video signal is emphasized, signals delayed by a plurality of stages of time equal to or more than a time required for converting the number of scanning lines are obtained by a delay circuit, and an appropriate delay signal is selected from among the plurality of delay signals by a selection circuit. The selected delay signal is compared with the emphasized video signal in emphasized-component detector circuitsand the overemphasized component is detected. Processing to suppress the emphasis is performed by suppressor circuitswith respect to a portion where the overemphasized signal component is detected.

Video signal processing method and device

A line doubling processing system has an input signal switching output section for receiving sequential input fields and for outputting, based on the sequential input fields, a plurality of fields obtained from the same image, and a line doubling device for generating one line-doubled field using the plurality of fields that are output from the input signal switching output section.

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Chiba, Japan

Seiko Imai