Canon Kabushiki Kaisha

Taizou Hori

Hiroyuki Fukuoka

Kenichi Nagasawa

Takashi Kobayashi

Hiroyuki Takimoto

Jun Makino

Shinichi Koyama

Yoshihiro Nakatani

Koji Takahashi

Shinichi Hatae

Yasuyuki Tanaka

Susumu Kozuki

Isao Harigaya

Toshiyuki Masui

Tsutomu Fukatsu

Tetsuya Wakui

Takayuki Kikuchi

Nobutoshi Takayama

Mitsuo Niida

Akiyoshi Hamanaka

Hirokazu Mogi

Kazuhiko Haruma

Yasumasa Ono

Hideaki Fujimoto

A reproduction apparatus reproduces information signals recorded in a plurality of recording modes having different information sizes of an information signal to be recorded per unit time, discriminates the recording mode of the reproduced information signal, and controls tracking between a recording medium and head in accordance with the discrimination result.

Variable-mode information signal reproduction apparatus with tracking control

In an audio signal processing apparatus for recording a plurality of kinds or systems of audio signals on a recording medium and for reproducing a plurality of kinds or systems of audio signals recorded on the recording medium, in a state where a mixing output mode of mixing the plurality of kinds or systems of audio signals and outputting the mixed audio signals is designated, (i) when a recording operation mode of recording the plurality of kinds or systems of audio signals on the recording medium is designated, the plurality of kinds or systems of audio signals are mixed and outputted while making levels of the plurality of kinds or systems of audio signals equal to each other, and (ii) when a reproducing operation mode of reproducing a plurality of kinds or systems of audio signals recorded on the recording medium is designated, the plurality of kinds or systems of audio signals reproduced from the recording medium are mixed and outputted according to an arbitrarily variable mixing ratio. Thus, the audio signal processing apparatus can record the plurality of kinds or systems of audio signals, effectively utilizing the dynamic range of the recording medium, and can mix and reproduce the plurality of kinds or systems of audio signals in a good reproduction state where S/N is good.

Audio signal processing apparatus

Apparatus and method for cross-fading moving image signals include structure and steps for temporarily storing moving image signals in a memory for a predetermined period of time. Moving image signals read out from the memory and newly-input moving image signals are continuously combined for an operation time equal to or greater than the predetermined period of time. Thus, it is possible to obtain combined signals such that the moving image signals overlap each other in a relatively simple arrangement without using a special magnetic head.

Image signal processing apparatus and method for cross-fading moving image signals

An apparatus is disclosed which is arranged to record a video signal in first areas respectively provided in a multiplicity of tracks on a recording medium and also a digital still-image signal in second areas which are respectively separated from the first areas. In the apparatus, while the digital still-image signal is being recorded in the second areas, the video signal is always recorded in the first areas, whereby it is possible to prevent occurrence of an uncomfortable phenomenon, such as formation of a scene devoid of a substantial image, during reproduction from the first areas. In addition, an analog still-image signal, representative of an image identical to an image represented by the digital still-image signal recorded in the second areas, is repeatedly recorded in the first areas during a predetermined time duration, whereby it is possible to facilitate search of a still-image signal recorded in the second areas. In addition, the digital still-image signal is recorded in the second areas at intervals of a predetermined period during recording of an analog moving-image signal in the first areas, whereby it is possible to record as many still images as possible.

Apparatus for recording digital still image signal and analog video

An apparatus and method for inputting one or more video signals, synthesizing the video signals and outputting the synthesized video signals with aspect information. The aspect information represents an aspect ratio of the synthesized video signal. The aspect information may be superposed within the vertical blanking period.

Apparatus and method for processing video signals with different aspect

An image processing apparatus divides an image signal corresponding to one frame into a plurality of blocks, and performs compression encoding for each block. The apparatus includes a display unit for displaying the image signal, a designation unit for designating a position desired by a user on the display unit, and a compression encoding therefor in accordance with the desired position designated by the designation unit. An image processing apparatus divides an image signal corresponding to one frame into a plurality of blocks, the image signal being output from a camera unit having focus adjustment unit for performing focus adjustment, and performs compression encoding for each block. The apparatus includes a display unit for displaying the image signal, a designation unit for designating a position desired by a user on the display unit, a compression encoding unit for weighting the blocks and performing compression encoding therefor in accordance with an output from the designation unit, and a control unit for controlling the focus adjustment unit in accordance with the desired position designated by the designation unit.

Image processing apparatus

A reproducing apparatus is arranged to reproduce data, which are recorded in the form of predetermined blocks on a track formed on a recording medium, by causing a reproducing head to trace the track while moving the recording medium, write the reproduced data into a memory circuit, and rearrange the written data on the basis of an address assigned to each of the blocks and contained in the written data, thereby restoring the written data to the original recorded data. The memory circuit has memory capacities respectively assigned to a plurality of blocks obtained by a trace of the reproducing head. The reproducing apparatus is provided with an adjustment circuit for adjusting the remaining memory capacity of each of the plurality of blocks in accordance with the state of storage of the data stored in the memory circuit.

Reproducing apparatus varying reproduction speed according to memory

A video signal processing apparatus including an input unit for inputting a video signal, a detecting unit for detecting an aspect ratio of the video signal inputted to the input unit, a holding unit for holding aspect information representing the aspect ratio detected by the detecting unit, an abnormal state detecting unit for detecting an abnormal state of the video signal inputted to the input unit, and an output unit for selectively outputting aspect information outputted from the aspect ratio detecting unit and the aspect information held by the holding unit, in accordance with an output of the abnormal state detecting unit.

Video signal processing apparatus for processing video signals with

An apparatus is arranged to record a video signal in first areas respectively provided in a multiplicity of tracks on a recording medium and also a digital still-image signal in second areas which are respectively separated from the first areas. In the apparatus, while the digital still-image signal is being recorded in the second areas, the video signal is always recorded in the first areas, whereby it is possible to prevent occurrence of an uncomfortable phenomenon, such as formation of a scene devoid of a substantial image, during reproduction from the first areas. In addition, an analog still-image signal, representative of an image identical to an image represented by the digital still-image signal recorded in the second areas, is repeatedly recorded in the first areas during a predetermined time duration, whereby it is possible to facilitate search of a still-image signal recorded in the second areas. In addition, the digital still-image signal is recorded in the second areas at intervals of a predetermined period during recording of an analog moving-image signal in the first areas, whereby it is possible to record as many still images as possible.

Apparatus for recording digital still image signals and analog still

A sound processing device for processing sound is arranged to control an attenuation characteristic for attenuating the low-frequency signal of an input audio signal according to the level thereof, whereby it is possible to suppress a noise component contained in sound without substantial impairment in auditory sound quality.

Sound processing device

An apparatus for reproducing from a recording medium a frequency-modulated audio signal which has its carrier level in a specific period determined according to the kind of information and for producing the audio signal after processing the reproduced audio signal is arranged to control the signal processing action according to the output of a detecting circuit which detects the level of a difference between the carrier level of the frequency-modulated audio signal obtained in the specific period and the carrier level obtained in a period other than the specific period or detects changes taking place in the carrier level. This arrangement enables the apparatus to process the audio signal appositely to the kind of the frequency-modulated signal thereof without recourse to any additional reproducing circuit solely for this purpose. Further, the apparatus is arranged to prevent any faulty signal processing action by nullifying as necessary the output of the detecting circuit.

Audio signal reproducing apparatus

There is provided an image processing apparatus having an input unit for inputting a video signal, a detection unit for detecting the aspect ratio of the video signal input by the input unit, an image output unit for outputting an image having an aspect ratio corresponding to the aspect ratio detected by the detection unit, and a synthesizing unit for synthesizing the output from the image output unit with the video signal.

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Yokohama, Japan

Taizou Hori