Upon outputting halftone image data to an output device, density transformation is prevalently performed to improve image quality. Density transformation corresponds to linear gamma correction, and cannot correct for color fog and the like that may occur in a photo image. Hence, lightness and color-difference information of halftone image data is acquired on the basis of low-frequency components of frequency data obtained by transforming halftone image data into spatial frequency components, and a lightness and color-difference transform amount of the halftone image data is set on the basis of the acquired lightness and color-difference information.

Image processing method and apparatus

A print apparatus which receives image data from a digital camera, PC card, or PC to print an image on a storage medium outputs print data based on image data from the PC to a printer engine via a USB hub, and prints an image. The apparatus has a DSP which receives compressed image data from the digital camera or PC card, decodes the received data, and parallelly executes, for the decoded image data, at least color space conversion processing, size change processing, and color conversion processing. The apparatus generates print data on the basis of the image data processed by the DSP, outputs the generated print data to the printer engine, and prints an image.

Printing apparatus, control method therefor, and storage medium

This invention provides a technique which allows the user to select whether or not to make print settings without any special operation such as key operations or button operations upon printing information held by a mobile terminal using a printer. To this end, in a case where it is detected that a mobile terminal is located with an NFC communication range, an NFC communication is established to exchange information so as to prepare for transition to a BT communication, information to be printed is received via the BT communication, thus printing the information. At this time, only in a case where an established state of the NFC communication is continued for a predetermined period of time since the NFC communication is established, a detailed print setting menu is displayed.

Print control apparatus and control method thereof

In a print system for causing a printer to print an image on the basis of image data supplied from a portable communication apparatus by direct communication between the portable communication apparatus and the printer, the print function of the printer is obtained. When print conditions input by using the UI of the portable communication apparatus cannot be implemented by the print function of the printer, the portable communication apparatus requests a server to execute corresponding processing. A result processed by the server is received, and the printer is caused to print the image.

Portable Communication Apparatus, Print System, and Control Method Thereof

This invention generates efficient encoded data to restore original image data from reduced image data. An input unit inputs block data of 2×2 pixels from original image data. A converter generates reduced image data having a size smaller than the original image data by sampling one pixel data at a preset position in the input block data. A generator generates encoded data to restore three non-sampling target pixel data in each block data so as to restore the original image data from the reduced image data generated by the resolution converter. To do this, the generator determines whether all non-sampling target pixels in a block of interest are restorable from a sampling target pixel in the block of interest or from sampling target pixels in three blocks adjacent to the block of interest, and generates and outputs three kinds of additional information based on the determination result.

Image encoding apparatus and method of controlling the same

An image printing apparatus and its control method for printing an image based on image data from an image data source. In a case where a correction condition is set for the image data, if the image data is a new format file image data including predetermined information, correction processing is performed in accordance with the set correction condition. If the image data is not a new format file image data, the correction processing in accordance with the correction condition is not performed.

Image printing apparatus, image printing system and control method

A print-direct printer for receiving and printing JPEG data from a DSC divides the area of a memory into a plurality of blocks, stores the received JPEG data in the memory on a block-by-block basis and decompresses the compressed JPEG data that has been stored in the memory, thereby expanding the JPEG data into image data. If it is determined that JPEG data to be expanded next has not been stored in the memory, then the DSC is requested for JPEG data corresponding to at least one block, in an amount that is less than the maximum amount of data transferable from the DSC, in addition to the JPEG data to be expanded.

Image printing apparatus and image printing control method

An information processing apparatus comprising a power unit, a first control unit and a second control unit in which power supply is controlled based on a control signal from the first control unit, wherein when electric power supply from the power supply unit has been stopped and then the electric power supply from the power supply unit has been started, if update of a memory of the first control unit has been instructed, the first control unit transfers the content of a flash ROM in the first control unit into the memory thus updates the content of the memory. At this time, the second control unit is kept in a power-off status by a control signal line until the update of the memory is completed. After the completion of the update, power-on is notified by the control signal line, and the reset status of the second control unit is released.

Information processing apparatus and memory update method in the apparatus

Printing apparatus and printhead characteristic data selection method, which can appropriately handle printhead characteristic data under various environments. Judgment is made as to whether or not characteristic data of a printhead mounted to a printing apparatus is stored in an EEPROM of the printhead, an EEPROM of the printing apparatus, or a host computer. Based on the judgment result, the printhead characteristic data is inputted from the memory or host in accordance with a predetermined priority order. Validity of the characteristic data is determined each time the printhead characteristic data is inputted in accordance with the predetermined priority order. Based on the judgment result or determination result, the printhead characteristic data or average printhead characteristic data stored in another storage medium provided in the printing apparatus is selected.

Printing apparatus and printhead characteristic data selection method

PROBLEM TO BE SOLVED: To solve a problem that an image not intended by the user of a printer is printed or the important information part of that image is cut off. SOLUTION: In the image recorder for recording an image on a recording sheet based on image data from an image data source, recording conditions for recording the image data on a recording medium are set, and a decision is made whether that image can be recorded on the recording sheet without missing any part or not (S3) based on the aspect ratio of the image based on the image data and the aspect ratio of the recording sheet, and if a decision is made the image cannot be recorded without missing any part, a frame corresponding to the aspect ratio of the recording sheet for the image represented by the image data is displayed on the screen along with that image (S4). Consequently, the recording area in that image can be set. COPYRIGHT: (C)2003,JPO

Masato Oshima

Papers

Image printing apparatus, image printing system and control method

Image printing apparatus and image printing control method

Information processing apparatus and memory update method in the apparatus

Printing apparatus and printhead characteristic data selection method

Image recorder and its controlling method