Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Tetsuya Itani

Satoshi Kondo

Ryoji Suzuki

Satoshi Kato

Ikuoh Nishida

Keiichi Kuroda

Hiroki Takamori

Osamu Hosoi

A playback device judges whether a connected display device is equipped to display only interlaced video or both interlaced and progressive video. If equipped to display both interlaced and progressive video, a mode setting unitsets an operation mode of the playback device to an image quality mode for interlaced signal output or a continuity mode for progressive signal output, according to a user selection received via a GUI. If continuity mode is set, the playback device decodes the video stream and performs progressive signal output.

Playback device, computer program, playback method

The present invention provides a playback apparatus for up-converting a video signal without magnifying film grains. An up-converterperforms up-conversion on a frame image in a video signal. A film grain detection circuitdetects film grains from the video signal. A frequency converterconverts spatial frequencies of the detected film grains on the video signal after the resolution conversion to high frequencies.

Playback apparatus

According to the present invention, the sound quality of an apparatus having HDMI outputs exclusive for both of an audio signal and a video signal can be further improved. According to the present invention, even when the calculated value of CTS obtained using a first video clock signal Vcgenerated by a decoderis other than an integer, a value of a second video clock signal Vcand an N value are set such that the calculated value of CTS obtained using the second video clock signal Vcis an integer. By using the value of second video clock signal Vcand the N value set in this manner, an audio reproducing apparatuscan generate an audio clock signal Ac having reduced jitter.

Reproducing apparatus

An up-converter () performs up-conversion on frame images in a video signal. A pseudo-noise generation circuit () generates a pseudo-noise signal, and an adder () composites the pseudo-noise signal with the up-converted video signal. As a result, noise having the same resolution as the up-converted frame images (1920 vertical pixels by 1080 horizontal lines) is distributed in the composited frame images, and each piece of noise has a characteristic approximating a characteristic (crest value, amount, or frequency) of noise included in the pre-conversion video signal.

Reproduction device

A video decoder is connected with a block distortion detector for specifying the boundary of blocks where block boundary occurs, using decoded image data and information of motion vectors, which are supplied from the video decoder; and a block distortion remover for subjecting pixels in the vicinity of the block boundary of the decoded image to filtering on the basis of the result of detection from the block distortion detector, thereby removing the block distortion. Therefore, block distortion is accurately detected when a compressed and coded image is decoded, and the detected block distortion is removed while minimizing the blurriness of the image.

Block distortion detection method, block distortion detection apparatus, block distortion removal method, and block distortion removal apparatus

A playback apparatus including: a Clip information read circuitthat reads supplementary information from a recording medium, which also includes a video signal, and judges based on the supplementary information whether the video signal is of a first frame frequency or of a second frame frequency; a mode setting unitthat sets either a continuation or non-continuation mode, the continuation mode prohibiting and the non-continuation mode allowing a switch between frame frequencies during a playback; and a 24 Hz-60 Hz conversion circuitand a digital modulation circuitthat, if the continuation mode is set, output the obtained video signal if it is of the first frame frequency, and generate a video signal of the first frame frequency by converting the obtained video signal and output the generated video signal if the obtained video signal is of the second frame frequency.

Playback apparatus, program, and playback method

To provide a playback devicethat outputs video to a display device by converting an output frame rate of source video signals in accordance with a display capability of the display device, the source video signals having 60 Hz frame rate in a first period and 24 Hz frame rate in a second period.

Playback device and method

A playback device judges whether a connected display device is equipped to display only interlaced video or both interlaced and progressive video. It equipped to display both interlaced and progressive video, a mode setting unitsets an operation mode of the playback device to an image quality mode for interlaced signal output or a continuity mode for progressive signal output, according to a user selection received via a GUI. If continuity mode is set, the playback device decodes the video stream and performs progressive signal output.

An image reproducing device includes: an image signal inputting part for receiving input of a first image signal; a sub image signal generating part for generating a sub image signal from information on a sub image extracted from said first image signal; a main image signal decoding part for extracting a main image signal from said first image signal and decoding said main image signal; a brightness detecting part for detecting a brightness of said main image signal and calculating a brightness average value; a brightness adjusting part for adjusting a brightness of said sub image signal based on said brightness average value; an image signal composing part for composing said main image signal and said sub image signal, the brightness of which is adjusted, and generating a second image signal; and an image signal outputting part for outputting said second image signal.

Image reproduction device and image reproduction method employing a brightness adjustment

An image signal reproduction apparatus for reproducing a main image signal including either a first type of image signal obtained by converting a film material image into an electrical signal or a second type of image signal including a video signal as a material thereof, using a transfer information including the main image signal and a determination flag for determining whether the main image signal is the first type of image signal or the second type of image signal. The reproduction apparatus converts the main image signal to an interlaced scanned image signal of 60 fields per second in response to an output of a first timing signal when the main image signal is determined as the first type of image signal and outputs the converted signal or the main image signal as it is when the main image signal is determined as the second type of image signal.

Image signal reproduction apparatus

A video signal output apparatus is provided. Video format information that can be displayed on a video display apparatus is detected by an I/O unit from an input data. A comparing unit compares the detected video formats with video formats that can be converted by a converting unit, and then common video formats are set as selectable video formats and output as menu video. A user sees the menu video and selects a video format. Simultaneously with the converted digital video data, video format information is also inserted into the output data and then outputted. Accordingly, the video display apparatus switches the video format of the screen. The user can select a most suitable video format from the menu screen by only connecting the apparatuses, and then the video format of the video display image apparatus is also switched automatically.

Video signal output apparatus

Using an index indicating the amount of motion and noise in the video image calculated on the basis of the discrepancy pixel numbers of image two fields ago and the present image, the reliability of detection result is obtained and utilized, so as to improve the repeat field detection accuracy and the scene change detection accuracy. Further, adaptive filter accuracy is improved by changing the determination conditions in the determination of the filter to be used. In addition, filter control accuracy is improved by suppressing the filter fluctuation per unit time.

Repeat field detecting apparatus, video progressive conversion reproducing apparatus, repeat field detecting method, program, and recording medium

The image signal reproduction apparatus for reproducing a main image signal including either a first type of image signal obtained by converting a film material image into an electrical signal or a second type of image signal including a video signal as a material thereof, using a transfer information including the main image signal and a determination flag for determining whether the main image signal is the first type of image signal or the second type of image signal.

Growing community of inventors

Nara, Japan

Tetsuya Itani