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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7305173 | Decoding device and decoding method Disclosed is a decoding apparatus for performing decoding processing in keeping with multi-view broadcast. The decoding apparatus includes a picture stream data storage unit (31) for allocating a storage area for each picture stream data and storing the stora... | 12/04/2007 |
| 7242844 | Video signal recording and reproduction device and video signal reproduction device A video signal recording and reproduction device of this invention uses one of a plurality of terminals for receiving input of component video signal to also serve as a composite video signal input terminal, thereby reducing a number of the input terminals. This rea... | 07/10/2007 |
| 6992712 | Imaging apparatus In an imaging apparatus for detecting a dark output level superposed on an imaging signal which is an output signal of an imaging device and correcting the imaging signal based on the detected dark output level, occurrence of a false signal caused by the dark output... | 01/31/2006 |
| 6931197 | Frequency modulation (FM) recording apparatus of video tape recorder A frequency modulation (FM) recording apparatus for recording an FM modulated video signal onto a recording medium is provided. This recording apparatus (luminance components plus color components) includes an automatic gain controller; a limiter for limiting the le... | 08/16/2005 |
| 6925244 | Apparatus for recording/reproducing high resolution video signal A video signal recording/reproducing apparatus for recording/reproducing a high resolution video signal wherein the video resolution is enhanced by shifting a carrier frequency to a higher band in frequency modulation in a VCR's video signal recording mode, and by d... | 08/02/2005 |
| 6892024 | Information recording apparatus An information recording apparatus includes: a transferring device that separately and simultaneously receives at least two information supplied through at least two channels, and separately and simultaneously transfers the at least two information to a storing devi... | 05/10/2005 |
| 6885809 | Recording apparatus that records a broadcast program and ID information for a broadcast station on a recording medium, and a playback apparatus for recorded programs A recording apparatus includes a reception unit and a recording unit. The reception unit receives a broadcast signal, out of a plurality of broadcast signals that can be specified by conditions made up of broadcast frequencies and other items such as reception areas... | 04/26/2005 |
| 6690877 | Magnetic tape recording apparatus In a magnetic tape recording apparatus for recording an FM luminance signal and a low frequency converted chrominance onto tracks of a magnetic tape, both of a frequency of the FM luminance signal and a spectrum distribution of the low frequency converted... | 02/10/2004 |
| 6687452 | Magnetic recording device A magnetic recording device provided with a frequency modulation circuit, a filter circuit, and a frequency conversion circuit. The frequency modulation circuit generates a modified FM luminance signal the frequency of a carrier wave of which is higher th... | 02/03/2004 |
| 6249642 | Extended play radio vision cassette recorder system and method of operating same An extended play radio video cassette recorder (EPRVCR) capable of receiving and recording audio and video signals transmitted over a radio frequency channel is provided. The EPRVCR includes a videocassette recorder (VCR) and a tuner capable of receiving ... | 06/19/2001 |
| 6072594 | Information signal reproducing apparatus with noise processing An information signal recording apparatus for recording an information signal having a predetermined frequency band onto a recording medium, which comprises signal separating means for receiving said information signal and for separating the received info... | 06/06/2000 |
| 5909532 | Apparatus and method for recording and reproducing a television signal The television signal recording/reproducing system digitally records and reproduces television signals composed of a luminance signal, a chrominance signal and a resolution compensation signal included in predetermined television scanning lines. The syste... | 06/01/1999 |
| 5905839 | Digital video signal recording/reproducing apparatus for storing a vertical resolution signal The television signal recording/reproducing system digitally records and reproduces television signals composed of a luminance signal, a chrominance signal and a resolution compensation signal included in predetermined television scanning lines. The syste... | 05/18/1999 |
| 5845040 | Video signal reproduction apparatus for chrominance signals A video signal reproduction apparatus reproduces a chrominance signal which has been converted to a low frequency band and recorded on a magnetic tape. The low frequency chrominance signal read out from the magnetic tape is first subjected to phase recove... | 12/01/1998 |
| 5832169 | Apparatus and method for recording and reproducing a television signal The television signal recording/reproducing system digitally records and reproduces television signals composed of a luminance signal, a chrominance signal and a resolution compensation signal included in predetermined television scanning lines. The syste... | 11/03/1998 |
| 5742727 | Apparatus and method for recording and reproducing a television signal The television signal recording/reproducing system digitally records and reproduces television signals composed of a luminance signal, a chrominance signal and a resolution compensation signal included in predetermined television scanning lines. The syste... | 04/21/1998 |
| 5715353 | Sine-wave modulator and playback/recording modulator-demodulator for a high-fidelity video playback/recording system A playback/recording modulating-demodulating device, having a voltage-controlled oscillator (VCO), a voltage-current inverter (VCI), a band-pass filter, an amplitude limiter, and a phase-locked loop. In playback mode, the playback input signal is applied ... | 02/03/1998 |
| 5684914 | Digital carrier generator for frequency band conversion of color signals An apparatus for generating a carrier frequency suitable for frequency band conversion of a color signal in a digital color signal processing circuit of a video tape recorder includes an adder, an integrator and a memory device. The adder combines a first... | 11/04/1997 |
| 5655047 | Video signal frequency modulator having automatic control function and controlling method therefor A video signal frequency modulator having an automatic control function includes a reference generator for generating a sync tip level signal and a white peak level signal, a first switch for selecting one of the sync tip level signal, white peak level si... | 08/05/1997 |
| 5621535 | Direct digital synthesis of video signal recording waveforms from baseband digital signals provided by a computer interface for compatible recording onto analog video tape The present invention is a system for recording digitized component television signals onto analog video tape. The present invention directly implements the frequency division multiplexed signal of a VCR, and avoids many of the artifacts of composite tele... | 04/15/1997 |
| 5606424 | Simple high-band record modulation circuit in 8MM video tape recorder A record modulation circuit having a first frequency deviation amount determiner for determining the frequency deviation amount suitable for a normal recording mode, and a second frequency deviation amount determiner for determining the frequency deviatio... | 02/25/1997 |
| 5592132 | Frequency modulator comprising an adjusting circuit In a frequency modulator (1) having an adjusting circuit by which frequency modulator an applied luminance signal of a color video signal that contains synchronization pulses is frequency modulated, while the chrominance signal of the color video signal i... | 01/07/1997 |
| 5587802 | Extended definition video signal converter for use with a video recorder A converter with which an extended definition (ED) video signal may be converted into a signal that may be recorded by a video recorder and with which a signal read out by a video reorder may be converted to an ED video signal. The ED video signal include... | 12/24/1996 |
| 5552895 | Double-deck magnetic recording/reproducing apparatus A double-deck magnetic recording/reproducing apparatus includes first and second recording/reproducing portions for, during playback, receiving an FM video signal for a first (or second) format and a chrominance signal, and mixing an FM-modulated video si... | 09/03/1996 |
| 5534943 | Frequency modulation system having control of a carrier frequency A frequency modulating system for frequency-modulating an input signal with a predetermined carrier frequency comprising a controller circuit and a frequency modulator. The controller circuit includes an automatic frequency detecting circuit, a voltage co... | 07/09/1996 |
| 5517159 | Frequency modulating system including feedback clamping circuit A frequency modulating system for frequency-modulating an input signal with a predetermined carrier frequency comprising a controller circuit and a frequency modulator is provided. The controller circuit includes an automatic frequency detecting circuit, ... | 05/14/1996 |
| 5510898 | Information signal recording apparatus Apparatus for processing signals having time base variations comprises: time base variation correction circuitry for correcting time-base variations existing in a signal input thereto and having an input terminal and an output terminal, the output termina... | 04/23/1996 |
| 5506547 | Frequency modulator having LC oscillator with switchable frequencies A frequency modulation circuit which varies the resonance frequency of an LC resonance circuit, and which corresponds to the frequency modulation conversions of all TV methods with a simple constitution. Each of a plurality of passive element series circu... | 04/09/1996 |
| 5504464 | Frequency modulating system including clamp and transconductance amplifier A frequency modulating system for frequency-modulating an input signal with a predetermined carrier frequency comprising a controller circuit and a frequency modulator is provided. The controller circuit includes an automatic frequency detecting circuit, ... | 04/02/1996 |
| 5504463 | Frequency modulating system including VCD made of transconductance amplifiers A frequency modulating system for frequency-modulating an input signal with a predetermined carrier frequency comprising a controller circuit and a frequency modulator is provided. The controller circuit includes an automatic frequency detecting circuit, ... | 04/02/1996 |
| 5486929 | Time division multiplexed video recording and playback system A system and method for recording video signals onto analog magnetic tape, and for the playback of those recorded signals. Such a system includes a digital luminance signal generator, a first digital chrominance signal, and a second digital chrominance si... | 01/23/1996 |
| 5465158 | Video tape recorder capable of recording and reproducing wide-band chrominance signal In a video tape recorder of the color under recording type, in which a low frequency band converted carrier chrominance signal is recorded together with an FM luminance signal, another FM modulator is provided for modulating a wide band chrominance signal... | 11/07/1995 |
| 5430551 | Video recorder with distortion corrector circuit A brightness signal distortion correction circuit (8, 11, 21) is provided for a video recorder, having distortion correction circuit (11), responsive to frequency-modulated brightness signals, and further responsive to feedback disturbance recognition con... | 07/04/1995 |
| 5396294 | Digital chrominance signal demodulation apparatus Different from typical signal processing which employs a feedback control, by adopting a demodulating circuit employing AFC, which is not affected by a comb filter, the response characteristic against jitter is improved and a down converted chrominance si... | 03/07/1995 |
| 5369448 | Video signal processing system removing redundant information from chroma/motion separation output A video signal processing system including a reproducing or receiving circuit which is responsive to a recorded or transmitted video signal having a motion signal modulated at a first frequency mixed with a chroma signal modulated at a second frequency, w... | 11/29/1994 |
| 5245439 | Device and method in a video recorder for controlling frequency characteristics of a luminance component in dependence upon existence of a chrominance component A circuit for recording video signals includes: a luminance signal processor for separating a luminance signal from a video signal and frequency modulating the separated luminance signal; a chrominance signal processor, including a color detector, for sep... | 09/14/1993 |
| 5243474 | Automatic tracking control system which utilizes a crosstalk envelope signal to vary a tracking control signal An automatic tracking control system with a servo loop, controlled by a tracking control signal, that adjusts the position of a pickup head in relation to tracks scanned by the head. Adjacent-track crosstalk is extracted by a crosstalk detector and envelo... | 09/07/1993 |
| 5218449 | Nervous clock signal generator for video recorder A video recorder for recording composite video signals includes an analog to digital converter for digitizing samples of the composite video signal being recorded. A sync separator separates horizontal synchronizing information from the composite video si... | 06/08/1993 |
| 5200834 | Magnetic recording and reproducing apparatus obtaining separate clock signals from brightness and color components of a video signal A digital video tape recorder. A clock is extracted from the horizontal sync signal within the luminance signal, and used in processing the luminance portion of the video signal. A clock is also extracted from a color burst within the chrominance signal a... | 04/06/1993 |
| 5195073 | Apparatus for selectively recording analog and digital data on an optical disc In an optical disc device including an optical disc, a device for selectively processing and recording on the optical disc analog and digital input signals includes analog modulation circuitry for receiving analog input signals and producing modulated ana... | 03/16/1993 |
