Abstract: A conventional facsimile machine re-dials by using another telephone line after an elapse of a predetermined period of time since when a communication error after a line connection has occurred, so that it takes a predetermined period of time to re-dial by using the other telephone line, and hence a receiving end may receive data transmitted from another facsimile machine during this period. In order to prevent that, a facsimile machine of the present invention comprises: a plurality of line connecting means, each of which has a telephone line for transmitting/receiving data; a line selecting section for selecting a telephone line to be used when a plurality of telephone lines are connected; and an auto-dial sending section for changing over the telephone line currently selected by the line selecting section to another telephone line so as to make a call immediately, when the receiving end is busy.

Abstract: The image data are transmitted to an external device connected to the network in conjunction with a paper jam, predetermined paper supply condition such as a paper empty condition, or other abnormal condition. In this way jobs are not erased unbeknownst to an operator when power is automatically shut OFF due to lack of operation for a predetermined time following a print operation stoppage, or when power is shut OFF in conjunction with the correction of a paper jam or other abnormal condition. When the cause of the image data transmission has been corrected or when power is restored to the digital copier, the image data previously transmitted to an external device on the network are returned to the digital copier. In this way printing can be easily restarted by executing a restart continuous operation process without requiring an operator to again input image data in order to restart printing.

Abstract: In an ink amount limiting section 4, there are obtained ink amount limiting coefficients which are used to limit the ink amounts of the respective colors in such a manner that, where the maximum number of times of repeated printing with respect to a unit pixel that can prevent the ink from being blurred and from soaking up to the back surface of the record medium is set for a given value, the maximum number of times of ordinarily repeated printing within the unit pixel can provide a limited repeated printing conversion number equal to or less than the above-set given value. And, based on the thus obtained ink amount limiting coefficients and the image signals of the respective colors output from the &ggr; correcting section 3, print signals are generated and output.

Abstract: A color correction apparatus and method thereof in an image system are capable of automatically processing color correction by storing reference colorimetric data regarding a predetermined test pattern for estimating the color correction in a storage medium, and then scanning the estimating test pattern so that the color correction can be performed by minimizing an error between the reference data and the scanning data obtained by scanning the test pattern. As a result, color correction can be performed without using an optical densitometer or a colorimeter, and the operation for correcting the color can be performed without knowledge of the color coordinate system or the color signal.

Abstract: An object of the invention is to prevent a communication error, which may occur as a JM signal or a CM signal is kept transmitted, thereby ensuring transmission and reception of desired data. When a communication apparatus, which has transmitted the JM signal, does not receive a CJ signal when a JM signal transmission time t3 elapses, the communication apparatus interrupts transmission of the JM signal and transmits a DIS with bit 6 set, and receives a CI, CJ, DCS or NSS to execute the protocol of Recommendation V.34 or T.30. When the communication apparatus, which has transmitted the CM signal, does not receive the JM signal when a CM signal transmission time t4 elapses, the communication apparatus interrupts transmission of the CM signal and transmits the CI signal, and receives an ANSam signal or a signal of a V.21 channel 2 to execute the protocol of Recommendation V.34 or T.30. When detecting the signal of the V.

Abstract: A color image forming apparatus includes a scanner, an image processor, and an print engine. The color image forming apparatus further includes an operation panel through which an operator can selectively set two different mode, i.e., speed mode and quality mode. In the speed mode, the scanner is set in a first scanning speed and the image processor executes a color masking process by using a first conversion matrix dedicated for the speed mode. On the other hand, in the quality mode, the scanner is set in a second scanning speed which is lower than the first scanning speed and the image processor executes a color masking process by using a second conversion matrix dedicated for the quality mode. By selectively using the first and second conversion matrices in response to the scanning speed, an appropriate color masking can be executed regardless change in the scanning speed.

Abstract: A pixel color in an image can be represented by a dot color in a dot pattern as follows. A subset of a limited set of display colors is selected. The subset has N display colors that can render a solid color patch of the pixel color. The colors of the subset correspond to vertices of a simplex in the color space. The simplex has (N−1) dimensions. A point operation is then performed to select one of the vertices of the simplex and thereby select the dot color of the subset color corresponding to the selected vertex. Consequently, a solid patch of the pixel color can be rendered by a dot pattern having no more than N different colors. The dot pattern can be displayed by an imaging device such as an inkjet printer, which has a limited set of display colors.

Abstract: A unique combination of four colorants (C′M′Y′K′) of a given printer that is equivalent to an externally defined four colorant combination (CMYK) by having the same color values (e.g., L*a*b* values). A fourth colorant, e.g., black, (K) of the externally defined four colorant combination is mapped to an equivalent fourth colorant (K′) of the printer by matching optical density, reflectance, L* or similar color value. The L* value is found for various percentages of the fourth colorant of the printer by printing varying percentages of the fourth component and measuring its L*a*b* values and, assuming a* and b* are near zero, using the L* value. These values are inputted into an interpolation program. Then, patches of varying percentages of each one of the three color components of the printer (CMY) are printed out at varying percentages.

Abstract: In the form of print ordering wherein photograph image data are recorded in a recording medium and brought in to a photographic service provider, a customer can specify on a personal computer a variety of printing conditions for a photographic printer installed in the photographic service provider. A printer driver for the photographic printer of the photographic service provider is installed in a personal computer of a customer. The printer driver receives an input specifying the variety of printing conditions by displaying a printing condition setting screen on a monitor of the personal computer via image processing application software. The image processing application software converts resolution upon necessity in response to the printing conditions, transfers the image data after the conversion and an image of a print paper, both of which are then displayed on a finish confirmation screen by the printer driver.

Abstract: Provided with driver operating under a Microsoft Windows operating system which senses the replacement of the ink cartridge in an automatic manner and generates a print data adapted to the type of ink cartridge in case the user replaces the ink cartridge with a pressing of an ink replacement button disposed in an inkjet printer for the user's more efficient use, the driver software performing a process including the steps of: when a new ink cartridge replaces an old ink cartridge by means of an ink replacement button, performing a first bidirectional communication for sensing the type of the ink cartridge; checking whether the ink cartridge sensed is a black one; if the ink cartridge is a black one, generating black print data according to the black ink cartridge; and if the ink cartridge is not a black one, generating color print data according to the color ink cartridge.

Abstract: Density calibration for a printer is achieved using a standard grey scale vignette master and a stored gray scale vignette image that the printer operator can invoke from the operator panel of a printer. The vignette image provides a pre-calibrated scale that is used in conjunction with the □standard□ image to determine the proper optical density. The density is then set by the printer control panel based upon the value obtained by visually matching the two grey scale vignettes.

Abstract: A sample image (142) is recognized by normalizing (404) the size of a sample image (142) to the size of a referent images (146); and determining (406) a set of candidate images (147) from a set of referent images (146), wherein each of the candidate images (147) is within an acceptable distance from a different binarization (145) of the sample image (142). A system (120) for image recognition includes a scanning device (126), a normalization unit (134), a distance calculation unit (136), a classification unit (138), a disambiguation unit (140), and a display device (128).

Abstract: A system and method for receiving damage data in a bitstream of encoded data is disclosed. A plurality of candidate decodings for a plurality of blocks are generated. A measure is generated for each block based upon at least an image portion of the candidate decodings. Compatibility is determined between adjacent blocks of the plurality of blocks. A candidate decoding is selected based upon the measure and the compatibility of adjacent blocks. In one embodiment, this is used in the transmission of video signals over a potentially lossy communications channel.

Abstract: An image filter circuit generates unsharp image signals to subject image signals to a dodging treatment which adjusts areas of exposure over an entire image within an image processing apparatus for image processing the image signals. The circuit includes an IIR type filter for carrying out a filtering treatment to generate the unsharp image signals. It further includes a FIFO type field memory for delaying image signals which are not subjected to the filtering treatment at the IIR filter for a time corresponding to the delay time of image signals which have been subjected to the filtering treatment at the IIR type filter. The image filter circuit, which obtains the unsharp image signals corresponding to an unsharp mask for obtaining a dodging effect, can be made small in size with a simplified circuit arrangement.

Abstract: A cathode ray tube having a face plate including a fluorescent screen formed on the inner surface of the face plate. A conventional metal backing layer backs up the fluorescent screen. The improvements of the present invention are involved with the composition of the fluorescent material composition which includes fluorescent particles and not less than 0.6 parts by weight of SiO.sub.2 per 100 parts by weight of fluorescent particles in that portion of the material which contacts the face plate, the amount of SiO.sub.2 being insufficient to cause the brightness of the fluorescent particles to deteriorate, and not more than 0.3 parts by weight of SiO.sub.2 per 100 parts by weight of fluorescent particles in that portion of the fluorescent material which faces the metal backing layer.

Abstract: A novel electrode structure for a fluorescent lamp, particularly one employing a low discharge gas pressure, comprises a directly heated hollow cathode interiorly coated with an emissive mixture. In accordance with one embodiment of the present invention, a flat metal ribbon is wound to form a helix which is heated resistively. In accordance with another embodiment of the present invention, a flat metal ribbon is wound in a flat spiral configuration and likewise heated resistively. In yet another embodiment of the present invention, a fluorescent lamp electrode comprises a metal cylinder heated directly by a filamentary coil disposed about the circumference of the cylinder and electrically insulated therefrom.