To Or From Morse Code Patents (Class 341/66)
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Patent number: 8891718Abstract: A system for simultaneous transmission (1) of Morse signaling over a radio communication using digital technology, comprising a signal generator (2) with at least one digital modulation which includes at least one amplitude modulation component; a Morse code generator (3) that generates Morse tones in analog form; and a first attenuator module (4), controlled by the Morse code generator (4). In this way, a signal with digital modulation generated by the signal generator (2) is attenuated in amplitude by the first attenuator module (4), the amplitude attenuation being the function of the amplitude of the waveform generated by the Morse code generator (3). In this way the transmission of information by digital modulation is simultaneous with the transmission of the Morse code by analog amplitude modulation (AM), using one single radiofrequency (RF) carrier signal and without service interruption or information loss.Type: GrantFiled: February 13, 2013Date of Patent: November 18, 2014Assignee: Teltronic, S.A.Inventors: Javier Cordova Val, Ignacio Cano Lazaro, Roman Abadias Pelacho
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Patent number: 8866648Abstract: The through metal communication system sends messages by tapping on metal barriers, such as pipelines, bulkheads, and the like. A robotic element attaches itself to a metal barrier, wall, pipe, and the like. A piezoelectric tapping device is attached to the robotic element and can tap an encoded message onto the metal. The robot preferably includes a piezoelectric actuator, a microcontroller to convert text/information to Morse code, and a power source for the actuator. The messages are retrieved and interpreted by a remote transducer connected to a computer or microcontroller.Type: GrantFiled: August 2, 2011Date of Patent: October 21, 2014Assignee: King Fahd University of Petroleum and MineralsInventor: Samir Mekid
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Patent number: 8806292Abstract: A hybrid mechanism whereby hardware acceleration is combined with software such that the compression rate achieved is significantly increased while maintaining the original compression ratio (e.g., using full DHT and not SHT or an approximation). The compression acceleration mechanism is applicable to a hardware accelerator tightly coupled with the general purpose processor. The compression task is divided and parallelized between hardware and software wherein each compression task is split into two acceleration requests: a first request that performs SHT encoding using hardware acceleration and provides post-LZ frequency statistics; and a second request that performs SHT decoding and DHT encoding using the DHT generated in software.Type: GrantFiled: December 15, 2011Date of Patent: August 12, 2014Assignee: International Business Machines CorporationInventors: Giora Biran, Amit Golander, Kiyoshi Nishino, Nobuyoshi Tanaka
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Patent number: 8294602Abstract: A coding method, a decoding method, a coder, and a decoder are disclosed herein. A coding method includes: obtaining the pulse distribution, on a track, of the pulses to be encoded on the track; determining a distribution identifier for identifying the pulse distribution according to the pulse distribution; and generating a coding index that includes the distribution identifier. A decoding method includes: receiving a coding index; obtaining a distribution identifier from the coding index, wherein the distribution identifier is configured to identify the pulse distribution, on a track, of the pulses to be encoded on the track; determining the pulse distribution, on a track, of all the pulses to be encoded on the track according to the distribution identifier; and reconstructing the pulse order on the track according to the pulse distribution.Type: GrantFiled: October 28, 2009Date of Patent: October 23, 2012Assignee: Huawei Technologies Co., Ltd.Inventors: Fuwei Ma, Dejun Zhang
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Patent number: 7990297Abstract: A method for encoding an input sequence of symbols to produce a bitstream and a method of decoding the bitstream to generate a reconstructed binary sequence. Encoding employs an encoding tree having primary codewords associated with leaf nodes and secondary codewords associated with internal nodes. A flush event may cause output of secondary codewords. A context model is used to select an encoding tree corresponding to an estimated probability at the encoder. The same context model is used by the decoder to select a decoding tree. The decoder interleaves bits from decoded bit sequences associated with different estimated probabilities based on the context model.Type: GrantFiled: February 26, 2010Date of Patent: August 2, 2011Assignee: Research In Motion LimitedInventors: Gergely Ferenc Korodi, Dake He
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Patent number: 7852240Abstract: A communication system using two computers. The first computer takes a textual string in the open, and, using a varying length representation, associates each character within the textual string to a varying length digital representation. The resulting digital string is then broken into prescribed lengths and the resulting character string is communicated to a second computer. The second computer breaks the character string into the underlying bit map and converts back to the textual string in the open using the varying length representation.Type: GrantFiled: May 1, 2009Date of Patent: December 14, 2010Inventor: Mark Ellery Ogram
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Publication number: 20100277352Abstract: A communication system using two computers. The first computer takes a textual string in the open, and, using a varying length representation, associates each character within the textual string to a varying length digital representation. The resulting digital string is then broken into prescribed lengths and the resulting character string is communicated to a second computer. The second computer breaks the character string into the underlying bit map and converts back to the textual string in the open using the varying length representation.Type: ApplicationFiled: May 1, 2009Publication date: November 4, 2010Inventor: Mark Ellery Ogram
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Patent number: 7800520Abstract: A method and system are provided for encoding a plurality of integers with variable-length code tables constructed by combining a plurality of structured code tables. Each code table has an associated set of integer values; the sets are disjoint and exhaustive, so that every integer appears in exactly one set. An integer is encoded using the codebook associated with the set in which the integer appears.Type: GrantFiled: December 30, 2008Date of Patent: September 21, 2010Assignee: Apple Inc.Inventors: Ken Kengkuan Lin, Mitchell Howard Oslick
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Patent number: 7791509Abstract: An information handling system includes a processor that may perform preprocessing on a variable-length code (VLC) bitstream before decoding the bitstream. The bitstream includes multiple codewords. The processor analyzes incoming VLC bitstream information and generates codeword table information for storage in a system memory or a VLC codeword tables location. The processor generates a VLC lookup table from the information in the VLC codeword tables and stores that VLC lookup table in a system memory of the IHS. The VLC lookup table may exhibit two dimensional indexing by leading zero count and bit-length possibility.Type: GrantFiled: July 15, 2008Date of Patent: September 7, 2010Assignee: International Business Machines CorporationInventors: Liang Chen, Kuan Feng, Huo Ding Li, Xing Liu, Rong Yan, Yu Yuan, Sheng Xu
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Publication number: 20090215494Abstract: Devices and methods are presented to remotely dial wireless communications devices. A device is equipped with a microphone and a plurality of logic units to analyze incoming acoustic signals in the form of Morse code. Acoustic signals may comprise tapping sounds, or voice patterns to create the “dits” and “dahs” associated with Morse code. Background noise can be eliminated using digital signal processing (DSP). The device can be used in a variety of environments where phone numbers and addresses need to be dialed from a distance or in emergency situations.Type: ApplicationFiled: February 27, 2008Publication date: August 27, 2009Applicant: AT&T MOBILITY II LLCInventors: Mark Edward Causey, Adrianne Binh Luu, Scott Andrus, Kevin Wray Jones
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Patent number: 7486211Abstract: A method and system are provided for encoding a plurality of integers with variable-length code tables constructed by combining a plurality of structured code tables. Each code table has an associated set of integer values; the sets are disjoint and exhaustive, so that every integer appears in exactly one set. An integer is encoded using the codebook associated with the set in which the integer appears.Type: GrantFiled: April 13, 2007Date of Patent: February 3, 2009Assignee: Apple Inc.Inventors: Ken Kengkuan Lin, Mitchell Howard Oslick
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Patent number: 7403561Abstract: High quality intraframe-only compression of video can be achieved using rate distortion optimization and without resizing or bit depth modification. The compression process involves transforming portions of the image to generate frequency domain coefficients for each portion. A bit rate for each transformed portion using a plurality of scale factors is determined. Distortion for each portion is estimated according to the plurality of scale factors. A scale factor is selected for each portion to minimize the total distortion in the image to achieve a desired bit rate. A quantization matrix is selected according to the desired bit rate. The frequency domain coefficients for each portion are quantized using the selected plurality of quantizers as scaled by the selected scale factor for the portion. The quantized frequency domain coefficients are encoded using a variable length encoding to provide compressed data for each of the defined portions.Type: GrantFiled: April 2, 2004Date of Patent: July 22, 2008Assignee: Avid Technology, Inc.Inventors: Dane P. Kottke, Katherine H. Cornog
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Patent number: 6737994Abstract: A system and method for encoding an input sequence of code points to produce an output sequence of bytes that is compressed, but has the same relative binary order as the original sequence.Type: GrantFiled: May 13, 2002Date of Patent: May 18, 2004Assignee: International Business Machines CorporationInventors: Mark Edward Davis, Markus Walter Scherer
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Patent number: 6686857Abstract: Waveform information is transmitted from the ends of a protection zone by first compressing the information using a lossy compression technique such as wavelets and then compressing the lossy compressed waveform information using a loss-less compression technique such as the Burrows-Wheeler transform. Status information is transmitted from the ends of the protection zone by compressing that information using the loss-less technique. The time for transmission can be less than, equal to or greater than the time for one cycle of the power line frequency.Type: GrantFiled: March 14, 2002Date of Patent: February 3, 2004Assignee: ABB Inc.Inventors: Thomas M. LoCasale, Joel A. B. Elston, Ismail I. Jouny
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Patent number: 6084518Abstract: A sensor for detecting characteristics of a flame includes a pair of electrodes that are spaced apart for passing an electric current through the flame. A pulse width modulator is coupled to the electrodes and generates an alternating current which flows through the flame. A controller operates the pulse width modulator to alter the duty cycle of the alternating current so that the average current through the flame is zero. Flame characteristic information is derived from the lengths of the positive and negative periods of the resultant alternating current.Type: GrantFiled: June 21, 1999Date of Patent: July 4, 2000Assignee: Johnson Controls Technology CompanyInventor: Jerel S. Jamieson
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Patent number: 5608395Abstract: A method of providing simplified keyed access to a computer or to other electronic devices with an alphabetic display, also referred to as a "computer", the method including the use of a low order hashing code for hashing the vocabulary in the computer, then using the same hashing code to hash-code a desired word that a user wishes the computer to display; entering the hash-coded word, and comparing the desired word with vocabulary words that conform to the code. To specify a desired word from among the vocabulary words that match the hash code, the vocabulary, or portions thereof, are preferably organized as a binary tree, having the words with highest frequency of use located highest in the tree. Where a binary hashing code is used, then the alphabet is approximately halved, such as at the letter N, and a simple key code such as a Dot can be used to denote all letters in the group A through M, and a Dash can be used to denote all letters in the group N through Z.Type: GrantFiled: June 22, 1994Date of Patent: March 4, 1997Assignee: The Hugh MacMillan Rehabilitation CentreInventors: Isaac Kurtz, Jutta Treviranus