Canon Kabushiki Kaisha

Tokyo Shibaura Denki Kabushiki Kaisha

Tokyo Shibaura Electric Co., Ltd.

Yoshitake Nagashima

Hisashi Ishikawa

Koji Takahashi

Tadayoshi Nakayama

Takashi Saito

Nobutaka Miyake

Mitsuru Owada

Katsuji Yoshimura

Yuji Konno

Hiroyuki Kimura

Ryo Fujimoto

Hideo Homma

Takeo Kimura

Kenichi Nagasawa

Susumu Kozuki

Masahiro Takei

Teruo Hieda

Hideo Honma

Kazumasa Noyori

Hiromi Fukuda

Yuji Imamura

Mizuho Tajima

Hideki Moriyama

Seiji Hashimoto

Shinji Sakai

Takao Kinoshita

Akira Suga

Joji Oki

Motoi Kato

Kazuhide Hasegawa

An image processing apparatus in which the amount of data bits for each of plural block units is controlled to be the same for all block units, so as to facilitate location of each block unit in coded image data without necessarily decoding the entire image. Pixel image data which is formable into plural block units is input for each block unit, and the input image data is orthogonally transformed. The orthogonally-transformed image data is quantized, and variable-length coding is performed on the quantized image data so as to generate variable-length code. The amount of variable length code in each block unit is controlled to be no more than a predetermined amount of data bits, with the predetermined amount being the same for each block unit.

Image processing apparatus and method

The subject matter of the invention is to add information to image data of multicolor image and monochromatic image. An image processing apparatus capable of adding information on raw data performs a dispersion conversion on the spectrum of the additional information by multiplying a code sequence of the PN sequence generatorby the additional data which is inputted from the input terminaland converted into serial data in P/S converter. At this time, the data sequence transmitted from the image signal processorto the printer engineis converted by the scan converterto correspond to the spatial axis for desperation. The converted data sequence is added to the output from the adderby the adder, and reconverted to the original scan by the scan inverter

Image processing apparatus and method thereof

In an image processing method, image information described by a page descriptor language is developed by the page descriptor language into a form not pasted with to-be-pasted image information, without reading out, for image development, the to-be-pasted image information from a unit for storing the to-be-pasted image information. The image information in the form not pasted with the to-be-pasted image information and the to-be-pasted image information are separately transmitted to a printer. The image information in the form not pasted with the to-be-pasted image information is compressed by reversible coding. The to-be-pasted information is compressed by irreversible coding.

Image processing apparatus for transmitting compressed area information to be used in editing

This invention relates to an image encoding method and apparatus, and particularly has as its object to satisfactorily control the amount of encoded image data. In order to achieve this object, according to this invention, there is disclosed a technique for sequentially controlling the code amounts in accordance with accumulated code amount information and accumulated encoded area information, so that variable-length codes of an image fall within a predetermined memory capacity in a single pass. More specifically, in an image processing apparatus having a compression processor ( ) for compressing input image information, and a memory ( ) for storing encoded data by the compression processor ( ), a code amount controller ( ) calculates a reference code amount on the basis of the input image information, and controls the encoding condition of the compression processor ( ) on the basis of the calculated reference code amount.

Image encoding method and apparatus

A data transmission system discriminates, for each one of a plurality of pieces of data representing an image provided in a frame, whether the one piece of data is a first type of data, which is to be developed into bit map data in a bit map area corresponding to the frame, or a second type of data, which is not to be developed into bit map data. The first type of data is developed into bit map data in the bit map area in response to the discrimination. Layout information of the second type of data in the frame is generated such that variation or rotation of the developed bit map data can be directed in the layout information. The developed bit map data, the generated layout information, and the second type of data are transmitted separately to an external apparatus.

Data transmission method and apparatus that discriminates whether data is to be developed into bitmap data

The subject matter of the invention is to add information to image data of multicolor image and monochromatic image. An image processing apparatus capable of adding information on raw data performs a dispersion conversion on the spectrum of the additional information by multiplying a code sequence of the PN sequence generator by the additional data which is inputted from the input terminal and converted into serial data in P/S converter . At this time, the data sequence transmitted from the image signal processor to the printer engine is converted by the scan converter to correspond to the spatial axis for desperation. The converted data sequence is added to the output from the adder by the adder , and reconverted to the original scan by the scan inverter

Image processing apparatus and method for extracting predetermined additional information from digital image data representing an original

Method and apparatus for compressing and storing data indicative of a full-color image

An image processing apparatus has a memory device for storing pixel image data including both halftone image data such as data of image of a photograph having a gradation and line image data such as data of text containing characters. The storage is conducted on the basis of blocks each having a predetermined number of pixels. The mean information quantity of the halftone image data per pixel stored in the memory means is not greater than the information quantity of the line image data per pixel stored in the memory means. The halftone image data being compressed on the basis of the block. Therefore, both the halftone image data and line image data can be stored in a small memory by using common addresses, without causing any degradation of the image quality.

Image processing apparatus

A video signal recording apparatus which records a video signal on a recording medium after separating a fixed time portion of an input video signal and extending the time axis of the separated video signal.

Video signal recording apparatus

An apparatus and method for adding information to image data of a multicolor image and a monochromatic image includes the performing of a dispersion conversion on the spectrum of additional information to be added to the image data by multiplying a code sequence of a PN sequence generator by the additional data which is inputted from an input terminal and converted into serial data in a P/S converter. At this time, the data sequence transmitted from an image signal processor to a printer engine 107 is converted by a scan converter to correspond to the spatial axis for dispersion. The converted data sequence is added to the output from an adder by another adder 110, and reconverted to the original scan by a scan inverter.

Image processing apparatus and method for synthesizing first and second

A reproducing apparatus for reproducing an information signal from a recording medium in which a recording medium has a modulated information signal recorded thereon by one of different recording systems, includes an optical head for irradiating the recording medium with a light beam, a photoelectric detecting portion for receiving a light beam reflexed from the recording medium and for generating an electric signal as the modulated information signal in response to the received light beam, and a convertor for converting the information signal from the electric signal. The photoelectric detecting portion is arranged to generate the electric signal by different processes in the case where the modulated information signal is recorded on the recording medium by a first system and in the case where the modulated information signal is recorded on the recording medium by a second system different from the first system. The convertor includes a demodulation circuit which is commonly utilized for demodulating both modulated information signals recorded by the first and second systems.

Reproducing apparatus having an optical head system

A sheet-shaped record bearing medium having a first recording area for recording a fixed amount of information and a second recording area for recording a variable amount of information, a still video signal being recorded in the first recording area and a time-serial signal being recorded in the second recording area.

Record bearing medium for still video signal

Binary data are obtained on data of reference pixels included in the upper and below lines of an interpolated pixel through binarizing circuits by comparing with the threshold value determined based on the reference pixel data. Binary interpolation data of the interpolated pixel are obtained from the plurality of binary data. Maximum threshold data is determined as multivalued interpolation data of the interpolated pixel, when the binary interpolation data is '1'.

Adapting image data resolution to match resolution of an output device

A video camera comprises an image pickup device for converting an optical image applied thereto into an electric signal, a shutter operable for opening a path for applying the optical image to the image pickup device and for closing the path and processing circuitry arranged to receive the electric signal for producing a video signal for recordation, the processing means including compensator circuitry for selectively compensating for the received electric signal responsively to operation of the shutter in producing the video signal for recordation.

Growing community of inventors

Chigasaki, Japan

Yoshitake Nagashima