Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7444032 | Demodulation and phase estimation of two-dimensional patterns A method (100) of demodulating a real two-dimensional pattern (110) is disclosed. The method (100) estimates (120, 130) a quadrature two-dimensional pattern from the real two-dimensional pattern (110) using a smooth phase only tran... | 10/28/2008 |
| 7385732 | Image reading apparatus, image forming apparatus and image reading method An image reading apparatus that reads out an original document image synchronously with a frequency dispersion clock gained by modulating the frequency of a reference clock so as to be changed cyclically at a predetermined modulation period, comprising: | 06/10/2008 |
| 7089420 | Authentication method and system The present invention provides a method and apparatus for the production and labeling of objects in a manner suitable for the prevention and detection of counterfeiting. Thus, the system incorporates a variety of features that make unauthorized reproduction difficul... | 08/08/2006 |
| 5991734 | Method of measuring the creative value in communications This invention relates to a method for measuring the creative value added to a communication, such as an advertisement in the media of print, television or radio. In a preferred embodiment, the invention provides a quantitative measure of the creative val... | 11/23/1999 |
| 5444711 | HDTV signal transmssion apparatus An HDTV signal transmission system for sending a 10-bit-parallel YPbPr-format HDTV signal converted to ten C4 containers, and further to the SDH (a new synchronous digital network) STM-16 frame for transmission based on CCITT recommendations. The system i... | 08/22/1995 |
| 5331432 | Image forming apparatus An apparatus for forming an image with modulated image lights which are obtained by modulating an image light in accordance with image signals, including a reference pattern signal generation circuit, a comparator to compare image signals with a reference... | 07/19/1994 |
| 5196949 | Vestigial sideband scophony imaging modulator A swept frequency modulator for use in a "Scophony" raster output scanner is disclosed. Input video [136] is mixed with a fixed RF frequency [137] provided by a fixed frequency oscillator [138], in a first mixer [139]. The resulting amplitude modulated RF... | 03/23/1993 |
| 5187593 | Image processing apparatus for texture processing An image processing apparatus performs texture processing, wherein second image data is modulated in accordance with first image data, and a density of the output image is adjusted appropriately by adjusting a D.C. level or a A.C. level of the modulated s... | 02/16/1993 |
| 5016115 | Point to multi point fax transmission method and system A method of simultaneously transmitting information to a plurality of standard facsimile (fax) receivers in which each receiver may have timing and response characteristics which vary from other receivers, including the steps of transmitting by a selectiv... | 05/14/1991 |
| 4959868 | Image processing system There is an image processing system comprising: a storage device to store the binarized image; a dividing circuit to divide the storage space in the storage device into rectangular meshes of a predetermined size in which at least one character is included... | 09/25/1990 |
| 4945404 | Video communication system and phase or frequency modulator included therein A video communication system for transmitting still pictures of a scene during periodic intervals comprises a T.V. camera producing video analog signals of the scene to be transmitted, an analog-to-digital converter converting the video analog signals to ... | 07/31/1990 |
| 4918718 | Quadrature amplitude modulation with line synchronization pulse for video telephone The present invention assigns amplitudes of sine wave cycles in a data packet on I and Q channels of a QAM signal to color, gray or luminance values. Overlapping sine wave cycles on the I and Q channels in the data packet are assigned to the same or neigh... | 04/17/1990 |
| 4868852 | Facsimile machine having an output level adjusting function A facsimile machine includes a MODEM, an attenuator, an NCU and a controller. A signal from the MODEM is adjusted in level by the attenuator under the control of the controller and then output to a transmission line through the NCU. In this case, the adju... | 09/19/1989 |
| 4843478 | Tunable filter circuit for facsimile recorders An electronic system for processing graphic teletype coded signals or graphic facsimile signals in different modes of frequency modulation comprises two filter channels passing different frequency modulated or keyed bands, two filter channels respectively... | 06/27/1989 |
| 4777605 | Method and apparatus for identifying the components of a signal Fast Fourier Transform methods of analyzing signal frequencies spectra yield results from zero frequencies upwards. Thus, when the frequency band of interest is not at very low frequencies a lot of wasted calculations may be performed, and resolution and ... | 10/11/1988 |
| 4771335 | Method and apparatus for sending data A communication system which includes two digital terminal stations connected to each other by a digital communication line. The communication system includes data terminals adapted for operation on an analog communication line which transmits main data a... | 09/13/1988 |
| 4769717 | Apparatus for producing images This disclosure relates to an image reproduction apparatus for reproducing images through laser beam scanning using galvano mirrors. The apparatus includes a memory device which stores an image signal in an image signal memory in accordance with a grid cl... | 09/06/1988 |
| 4763199 | Image processing apparatus and method of adjusting same An image processing apparatus includes; an image data inputting unit; a unit, including a reference conversion characteristic for use in changing the characteristic of the image data, for producing conversion data for the image data based on the reference... | 08/09/1988 |
| 4746986 | Manifold analog/digital facsimile apparatus A manifold facsmile apparatus capable of selectively communication with a G3 analog facsimile apparatus and a G4 digital facsimile apparatus. The manifold apparatus includes an analog interface adapted for connection with an analog communication network a... | 05/24/1988 |
| 4739413 | Video-optimized modulator-demodulator with adjacent modulating amplitudes matched to adjacent pixel gray values A video optimized, low cost modulator-demodulator is provided. Each modulating symbol has a one-to-one correspondence with a particular pixel value of brightness. A multiple amplitude two-phase modulation method is used. The black and white values are ass... | 04/19/1988 |
| 4691343 | Noise elimination system for pictures and the like In an amplitude-modulated or frequency modulated audio signal transmission system, a system for eliminating breakup of transmissions of photographs, negatives or any rapidly changing audio signal transmitted from one remote location to another over standa... | 09/01/1987 |
| 4686578 | GII/GIII transmission system A document is moved across a scanner unit and successive PEL lines are scanned. Reflected light from the document with the high PEL density produces binary signal 1 or 0 in accordance with the amount of the reflected light received by the scanner. The PEL... | 08/11/1987 |
| 4652933 | Image information processing system A combination of a facsimile apparatus and a personal computer. The personal computer is connected to the facsimile apparatus through 8 parallel data lines, a pair of unidirectional control signal lines and 3 bidirectional control signal lines. The combin... | 03/24/1987 |
| 4623934 | AGC update apparatus and method of using same A modem having automatic gain control update circuitry for use with CCITT Group II facsimile machines. The update circuitry receives incoming facsimile data samples, averages the samples for predetermined periods, compares the averages to find the maximum... | 11/18/1986 |
| 4607290 | Image information filing apparatus An image information filing apparatus includes a data compressing circuit for compressing line image information corresponding to each scanning line to decrease the redundancy of the image information and a circuit section for adding line sync code and EO... | 08/19/1986 |
| 4562483 | Transmission interruption signal detection system In a transmission interruption signal detection system of a facsimile system transmitting image information from transmission apparatus to reception apparatus and producing a transmission interruption signal of a predetermined frequency and sending the sa... | 12/31/1985 |
| 4517531 | Carrier wave reproducing circuit in synchronized detection system of medium speed facsimile A modulated signal level detecting circuit comprising a synchronized detector 1 of the modulated input signal, a phase-locked loop 5, 14, 16 connected to the input signal for providing a reproduced carrier wave of the input signal, a switch 21 included in... | 05/14/1985 |
| 4477821 | Light modulating apparatus A light modulating apparatus for use with a recording apparatus for recording an information signal on a recording medium includes a light source and an acousto-optic modulator for modulating light emitted from the light source in response to a first elec... | 10/16/1984 |
| 4451853 | Image data transmission process The invention relates to an image transmission process such as facsimile transmission wherein image data is converted into an electrical signal, transmitted over lines and then converted into a recorded image at the receiving end. Specifically, the invent... | 05/29/1984 |
| 4415933 | Carrier wave recovery circuit A carrier signal recovery circuit to be used in a receiving side of an image information transmitting apparatus, such as in a facsimile system, including an N-bit counter for counting reference clock pulses for a period corresponding to 2L (L b... | 11/15/1983 |
| 4366505 | Information forming apparatus The present invention is featured, in the transmission of pixel (picture element) signals grouped into blocks defined in a series of pixel signals, by sending a control signal instead of said pixel signals when the pixel signals contained in a block are a... | 12/28/1982 |
| 4353095 | Facsimile bandwidth compression method system and apparatus A facsimile bandwidth compression method using a facsimile signal comprising a synchronizing signal part, a control signal part having digital signals made by coding signals of existence or non-existence of substantial picture information in blocks which ... | 10/05/1982 |
| 4346410 | Facsimile receiver A facsimile receiver, wherein the carrier, which is necessary to reproduce the carrier in the case where the received signal is demodulated through synchronous detection, is reproduced exactly in the carrier reproducing means in the facsimile receiver bef... | 08/24/1982 |
| 4313139 | Carrier recovery circuit for a facsimile system A receiver for a facsimile system in which a local carrier is either derived from a modulated signal or is generated when the carrier component of that signal is not detectable which employs a first variable frequency oscillator and a second variable freq... | 01/26/1982 |
| 4290085 | Synchronization system for variable line length facsimile transceivers In a facsimile transceiver, an independent, high frequency precision oscillator precisely times the generation of synchronizing pulses which are transmitted to a remote, similar transceiver. An identical precision oscillator assures that the receiver empl... | 09/15/1981 |
| 4225888 | High efficiency facsimile transmission system The present facsimile transmission system is a combination of the prior Skipping White Space (SWS) system which is a digital system capable of rapid transmission, and the prior AM-PM-VSB (Amplitude Modulation, Phase Modulation, Vestigial Side Band Modulat... | 09/30/1980 |
| 4158861 | Facsimile communication system and method A facsimile communication system for compressing, transmitting and reproducing facsimile information is provided, wherein a transmitter includes a correlation detector. When a first facsimile information scanned along a first scanning line has a low patte... | 06/19/1979 |
| 4131917 | Frequency limiter Frequency modulated pulses representing dark/light variations on a document are applied to a frequency limiting circuit prior to synthesizing a low distortion sinewave voice band signal from the pulses. The frequency limiting circuit detects the frequency... | 12/26/1978 |
| 4130840 | Method and apparatus for coupling facsimile signals to a telephone network A frequency modulated facsimile signal is synthesized from a high frequency signal having a frequency which varies in response to dark/light variations on a document. The higher frequency signal which comprises pulses is coupled to a synthesizing network ... | 12/19/1978 |
| 4130839 | Circuitry for a facsimile receiver for regeneration of carrier for an amplitude modulated suppressed carrier signal Circuitry for a facsimile receiver for regenerating a carrier signal from the full-wave rectified signal obtained from a received signal which includes an amplitude modulated suppressed carrier signal and periodic short intervals of unmodulated carrier, e... | 12/19/1978 |
