Back to results
US 5,859,948 AGranted
Images processing apparatus for controlling binarized multi-value image data to convert pulse widths differently in at least two modes
AssigneeCanon Kabushiki Kaisha
InventorsMichio Ito, Masaharu Ohkubo, Hiroshi Sasame, Hiromichi Yamada, Masaki Ojima, Kaoru Seto, Hiroshi Mano, Atsushi Kashihara, Takashi Kawana
Life of this patent
Estimating the term…
Abstract
An image recording apparatus for recording image data from an external apparatus receives the image data as an image signal from the external apparatus, records the received image signal, and outputs a characteristic signal regarding a recording characteristic of the recording apparatus to the external apparatus.
Claims12
An image processing apparatus, comprising:
- means for inputting multi-valued image data, values of the multi-valued image data representing respective gradation levels;
- means for binarizing the multi-valued image data to generate a first binary image signal;
- receiving means for receiving, from a separate external recording apparatus, a characteristic signal representing a recording characteristic of the external recording apparatus;
- control means for controlling processing of the first binary image signal to output a second binary image signal in accordance with the characteristic signal received by said receiving means, each pulse width of the first binary image signal being converted to a respective pulse width of the second binary image signal;
- and
- transmitting means for transmitting the second binary image signal to the external recording apparatus.
3 more elements
An image recording apparatus comprising:
- receiving means for receiving, from an external apparatus including means for binarizing multi-valued image data to generate a first binary image signal and means for converting the first binary image signal into a second binary image signal in accordance with a conversion characteristic such that each pulse width of the first binary image signal is converted to a respective pulse width of the second binary image signal, the second binary image signal;
- recording means for recording the second binary image signal received by said receiving means;
- and
- transmitting means for transmitting a characteristic signal, representing a recording characteristic of said recording means, to the external apparatus, the characteristic signal being necessary to set the conversion characteristic of the converting means of the external apparatus.
1 more element
An image processing method, comprising the steps of:
- inputting multi-valued image data, values of the multi-valued image data representing respective gradation levels;
- binarizing the multi-valued image data to generate a first binary image signal;
- receiving, from a separate external recording apparatus, a characteristic signal representing a recording characteristic of the external recording apparatus;
- controlling processing of the first binary image signal to output a second binary image signal in accordance with the characteristic signal received at said receiving step, each pulse width of the first binary image signal being converted to a respective pulse width of the second binary image signal;
- and
- transmitting the second binary image signal to the external recording apparatus.
3 more elements
An image recording method, comprising the steps of:
- receiving, from an external apparatus including means for binarizing multi-valued image data to generate a first binary image signal and means for converting the first binary image signal into a second binary image signal in accordance with a conversion characteristic such that each pulse width of the first binary image signal is converted to a respective pulse width of the second binary image signal, the second binary image signal;
- recording the second binary image signal received at said receiving step using a recording unit;
- and
- transmitting a characteristic signal, representing a recording characteristic of the recording unit, to the external apparatus, the characteristic signal being necessary to set the conversion characteristic of the converting means of the external apparatus.
1 more element
Dependencies are inferred from the claim text.