Abstract: An image processing device includes an edge-enhancing image enlarger that converts an input image to a high-resolution image with edge enhancement. A difference calculator determines differences between the high-resolution image and the input image. A high-resolution image corrector corrects the high-resolution image by diffusing the differences to pixels of the high-resolution image, thereby generating a corrected image in which edges are enhanced without image degradation in textured areas.

Abstract: Problem: It is to automatically recognize CM-broadcast periods, while video-recording television broadcast, without interfering with simultaneous access action to the medium for video-recording the television broadcast. Means to Solve the Problem: By detecting transition points in an audio video signal of a television broadcast, recognizing a CM broadcast period when the points occur at intervals specific to CM-broadcast periods, and controlling to record into a recording medium at a predetermined timing, time information of plural CM-broadcast periods determined to be continuous, the frequency to access the recording medium can be reduced, which results in simultaneously recording inputted video images and time information of CM-broadcast periods into the recording medium.

Abstract: To obtain a high resolution image from two or more low resolution images, positional offsets among the low resolution images are determined and the low resolution images are mapped onto a common plane according to the positional offsets. Pixel values in the high resolution image are calculated by weighted interpolation from the pixel values of the low resolution images, using interpolation coefficients that increases with increasing correlation with the pixel of interest. Correlation is determined by taking horizontal and vertical first and second derivatives of the pixel values in one low resolution image to find a direction of strong correlation. Appropriate interpolation is thereby obtained even near edges and other abrupt changes in the image.

Abstract: A broadcast receiver includes a first video signal selector which outputs a video signal of a main-picture; a second video signal selector which outputs a video signal of a sub-picture; a first audio signal selector which outputs an audio signal of the main-picture; a second audio signal selector which outputs an audio signal of the sub-picture; a first video processor which generates a third video signal from the video signals of the main-picture and/or sub-picture; a feature quantity generator which generates a feature quantity of the audio signal of the sub-picture in accordance with a result of comparison between data corresponding to the audio signal of the sub-picture and sound class model data created beforehand; a determination processor which determines a scene as a specified scene; and a controller which controls the whole components in accordance with the specified scene.

Abstract: [Problem] The present invention provides a method of detecting a music scene with a high accuracy from a television broadcast. [Means for Solution] The music-segment detection method provided with a data input step of inputting data including an audio signal and a video signal; a plurality of candidate-music-segment detection steps of detecting, from the audio signal, respective candidate music-segments in the input data, based on criteria different from each other; a change-point detection step of detecting a change point in the input data, based on a distinctive change in the audio signal and/or on a distinctive change in a video signal; and a music-segment detection step of detecting a music segment, based on the plurality of detected candidate-music-segments and on the detected change point.

Abstract: Problem: It is to automatically recognize CM-broadcast periods, while video-recording television broadcast, without interfering with simultaneous access action to the medium for video-recording the television broadcast. Means to Solve the Problem: By detecting transition points in an audio video signal of a television broadcast, recognizing a CM broadcast period when the points occur at intervals specific to CM-broadcast periods, and controlling to record into a recording medium at a predetermined timing, time information of plural CM-broadcast periods determined to be continuous, the frequency to access the recording medium can be reduced, which results in simultaneously recording inputted video images and time information of CM-broadcast periods into the recording medium.

Abstract: The present invention is to provide a method of efficiently detecting music scenes from television broadcasts. A music-segment detection method according to the present invention includes a data input step of inputting data including an audio and video signals; a plurality of candidate-music-segment detection steps of detecting candidate music-segments from the audio signal based on criteria different from each other; and a music-segment detection step of detecting a music segment based on the plurality of detected candidate music-segments. Thereby, high detection accuracy can be ensured for a wide variety of music with various tones, such as rock, popular ballad, and classic.

Abstract: A broadcast receiver includes a first video signal selector which outputs a video signal of a main-picture; a second video signal selector which outputs a video signal of a sub-picture; a first audio signal selector which outputs an audio signal of the main-picture; a second audio signal selector which outputs an audio signal of the sub-picture; a first video processor which generates a third video signal from the video signals of the main-picture and/or sub-picture; a feature quantity generator which generates a feature quantity of the audio signal of the sub-picture in accordance with a result of comparison between data corresponding to the audio signal of the sub-picture and sound class model data created beforehand; a determination processor which determines a scene as a specified scene; and a controller which controls the whole components in accordance with the specified scene.