Patents by Inventor Sverrir Olafsson
Sverrir Olafsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7277531Abstract: A fast startup procedure for a modem system utilizes known characteristics of a previously established communication channel to reduce the initialization period associated with subsequent connections over the same channel. In response to the establishment of a call, the modem devices determine whether the fast connect protocol is supported. If so, then the called modem transmits a modified answer tone to the calling modem. The calling modem analyzes the signal received in response to the modified answer tone to determine whether characteristics of the current channel are similar to stored characteristics associated with a previous connection over the same channel. If a channel “match” is found, then the modem devices carry out a fast initialization routine that eliminates, abbreviates, or modifies a number of procedures or protocols that are carried out in conventional modem startup processes.Type: GrantFiled: August 16, 2005Date of Patent: October 2, 2007Assignee: Mindspeed Technologies, Inc.Inventors: Sverrir Olafsson, Keith Chu, Burk Beadle
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Patent number: 7203241Abstract: Systems compensate for the presence of digital impairments using adaptive constellation techniques. Sample magnitudes are estimated from received samples transmitted during a training period using an algorithm based on minimizing the sum of squares of the estimated errors, afterwhich a suitable constellation is derived. In one embodiment, an optimum least-squares algorithm is employed. In an alternate embodiment, a least mean squares (LMS) or normalized LMS algorithm is performed.Type: GrantFiled: October 23, 2003Date of Patent: April 10, 2007Assignee: Silicon Laboratories Inc.Inventors: Xuming Zhang, Sverrir Olafsson
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Publication number: 20060210037Abstract: A modem to modem communication system supports call waiting services by exchanging hold request and acknowledge signals before relinquishing the line servicing incoming calls. Thereafter, the modem to modem session is reestablished without having to redial. The hold request may be denied or accepted, and may define the duration a modem will hold before hanging up. The holding modem maintains the session by fooling the higher protocol layers, making them believe that the modem is not on hold. Three-way calling services are also used to free up the shared line for outgoing calls while maintaining the session with holding modems. A table may be employed to screen incoming calls through a comparison of the caller ID information with that in the table. The table may be within the modem or the host computer.Type: ApplicationFiled: April 27, 2006Publication date: September 21, 2006Inventors: Sverrir Olafsson, Andrew Webster, Craig Borden, Charles Raasch, Nimesh Doshi, Burk Beadle, Robert Otten
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Publication number: 20060159244Abstract: A quick startup procedure for a modem system utilizes known characteristics of a previously established communication channel to reduce the initialization period associated with subsequent connections over the same channel. In response to the establishment of a call, the modem devices determine whether the quick connect protocol is supported. If so, then the called modem transmits a modified answer tone to the calling modem. The calling modem analyzes the signal received in response to the modified answer tone to determine whether characteristics of the current channel are similar to stored characteristics associated with a previous connection over the same channel. If a channel “match” is found, then the modem devices carry out a quick initialization routine that eliminates, abbreviates, or modifies a number of procedures or protocols that are carried out in conventional modem startup processes.Type: ApplicationFiled: February 9, 2006Publication date: July 20, 2006Inventors: Sverrir Olafsson, Burk Beadle
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Patent number: 7062022Abstract: A fast startup procedure for a modem system utilizes known characteristics of a previously established communication channel to reduce the initialization period associated with subsequent connections over the same channel. In response to the establishment of a call, the modem devices determine whether the fast connect protocol is supported. If so, then the called modem transmits a modified answer tone to the calling modem. The calling modem analyzes the signal received in response to the modified answer tone to determine whether characteristics of the current channel are similar to stored characteristics associated with a previous connection over the same channel. If a channel “match” is found, then the modem devices carry out a fast initialization routine that eliminates, abbreviates, or modifies a number of procedures or protocols that are carried out in conventional modem startup processes.Type: GrantFiled: January 8, 2004Date of Patent: June 13, 2006Assignee: Mindspeed Technologies, Inc.Inventors: Sverrir Olafsson, Keith Chu, Burk Beadle
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Patent number: 7027573Abstract: A quick startup procedure for a modem system utilizes known characteristics of a previously established communication channel to reduce the initialization period associated with subsequent connections over the same channel. In response to the establishment of a call, the modem devices determine whether the quick connect protocol is supported. If so, then the called modem transmits a modified answer tone to the calling modem. The calling modem analyzes the signal received in response to the modified answer tone to determine whether characteristics of the current channel are similar to stored characteristics associated with a previous connection over the same channel. If a channel “match” is found, then the modem devices carry out a quick initialization routine that eliminates, abbreviates, or modifies a number of procedures or protocols that are carried out in conventional modem startup processes.Type: GrantFiled: July 2, 2003Date of Patent: April 11, 2006Assignee: Silicon Laboratories Inc.Inventors: Sverrir Olafsson, Burk Beadle
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Patent number: 6985566Abstract: A fast train protocol for use by a high-speed point of sale (POS) modem is disclosed. In one aspect, the fast train protocol may include he following exemplary steps: receiving an instruction to connect to a remote modem; transmitting a tonal signal to the remote modem for a pre-determined period of time in response to receiving the instruction, where the tonal signal identifies the POS modem as being capable of supporting the fast train protocol; receiving an S signal from the remote modem in response to transmitting the tonal signal; receiving an S\ signal from the remote modem following receiving the S signal; receiving one or more remote PP signals from the remote modem following receiving the S\ signal; and receiving a remote parameter sequence from the remote modem following receiving the one or more remote PP signals.Type: GrantFiled: January 28, 2003Date of Patent: January 10, 2006Assignee: Conexant Systems, Inc.Inventor: Sverrir Olafsson
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Publication number: 20060002530Abstract: A fast startup procedure for a modem system utilizes known characteristics of a previously established communication channel to reduce the initialization period associated with subsequent connections over the same channel. In response to the establishment of a call, the modem devices determine whether the fast connect protocol is supported. If so, then the called modem transmits a modified answer tone to the calling modem. The calling modem analyzes the signal received in response to the modified answer tone to determine whether characteristics of the current channel are similar to stored characteristics associated with a previous connection over the same channel. If a channel “match” is found, then the modem devices carry out a fast initialization routine that eliminates, abbreviates, or modifies a number of procedures or protocols that are carried out in conventional modem startup processes.Type: ApplicationFiled: August 16, 2005Publication date: January 5, 2006Inventors: Sverrir Olafsson, Keith Chu, Burk Beadle
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Patent number: 6975585Abstract: In a modulation system an efficient modulation at a master station and allows great flexibility in clients, from simple 2 bit/symbol single-channel modulation and demodulation to multi-channel multiple-bit modulation. The present invention also permits selection of the frequency band to use for transmission, thus dealing effectively with channel nulls and no channel equalization is required. The present invention is a useful technique for short-distance moderate-rate multi-drop networking, such as multi-channel home-telephone for Voice over IP(VoIP).Type: GrantFiled: July 27, 2000Date of Patent: December 13, 2005Assignee: Conexant Systems, Inc.Inventors: Sverrir Olafsson, P. Michael Henderson
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Publication number: 20050207354Abstract: A multicast system is described in which a mechanism for suppressing feedback involves the receivers using an optimized timer function for selecting a backoff delay time before sending feedback, and canceling their feedback if in the meantime they detect that another receiver has sent a duplicate feedback message. The timer function is optimised, taking into account both the expected number of feedback messages and the extra latency which is introduced by the feedback mechanism, by minimizing an objective function expressed in terms of both these two aspects.Type: ApplicationFiled: June 12, 2003Publication date: September 22, 2005Inventors: Maziar Nekovee, Sverrir Olafsson
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Patent number: 6928107Abstract: A system and method for training an equalizer structure of a digital data communication system in order to compensate for transmission impairments on the line particularly wherein one transceiver of the two is resource limited. In an exemplary embodiment, a line card provides equalization feedback to a modem whenever changes to the equalization are beneficial. The line card calculates a limited number of tap correction factors at one time, transfers the tap correction factors to the modem, and then trains up a new set of tap correction factors. The modem incorporates the tap correction factors into the taps of the corresponding frequency ranges. The process iterates indefinitely through the transmission resulting in a very high quality equalization.Type: GrantFiled: September 27, 2000Date of Patent: August 9, 2005Assignee: Mindspeed Technologies, Inc.Inventors: Sverrir Olafsson, Ragnar Hlynur Jonsson
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Patent number: 6922467Abstract: The startup, retrain, renegotiation quick connect or other processes of handshaking between communication systems involve the exchange of certain modulation, constellation, precoder, prefilter and other communication related information. The communication systems exchange one long information sequence including all the necessary communication information. Subsequently, the communication systems start transmitting short sequences, including an acknowledgement information portion. If one of the communication systems does not receive an acknowledgement within a predetermined time or event, that communication system may retransmit another long information sequence. After such retransmission, the retransmitting communication system may continue transmitting the long information sequences or may start transmitting the short sequences once again. Eventually, each of the communication systems should receive a long information sequence and acknowledge their receipt of such sequence.Type: GrantFiled: August 12, 2003Date of Patent: July 26, 2005Assignee: Conexant Systems, Inc.Inventor: Sverrir Olafsson
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Publication number: 20050147224Abstract: A modem to modem communication system supports call waiting services by exchanging hold request and acknowledge signals before relinquishing the line servicing incoming calls. Thereafter, the modem to modem session is reestablished without having to redial. The hold request may be denied or accepted, and may define the duration a modem will hold before hanging up. The holding modem maintains the session by fooling the higher protocol layers, making them believe that the modem is not on hold. Three-way calling services are also used to free up the shared line for outgoing calls while maintaining the session with holding modems. A table may be employed to screen incoming calls through a comparison of the caller ID information with that in the table. The table may be within the modem or the host computer.Type: ApplicationFiled: March 3, 2005Publication date: July 7, 2005Applicant: Conexant Systems, Inc.Inventors: Sverrir Olafsson, Andrew Webster, Craig Borden, Charles Raasch, Nimesh Doshi, Burk Beadle, Robert Otten
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Publication number: 20050147223Abstract: A modem to modem communication system supports call waiting services by exchanging hold request and acknowledge signals before relinquishing the line servicing incoming calls. Thereafter, the modem to modem session is reestablished without having to redial. The hold request may be denied or accepted, and may define the duration a modem will hold before hanging up. The holding modem maintains the session by fooling the higher protocol layers, making them believe that the modem is not on hold. Three-way calling services are also used to free up the shared line for outgoing calls while maintaining the session with holding modems. A table may be employed to screen incoming calls through a comparison of the caller ID information with that in the table. The table may be within the modem or the host computer.Type: ApplicationFiled: March 3, 2005Publication date: July 7, 2005Applicant: Conexant Systems, Inc.Inventors: Sverrir Olafsson, Andrew Webster, Craig Borden, Charles Raasch, Nimesh Doshi, Burk Beadle, Robert Otten
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Patent number: 6912276Abstract: A modem to modem communication system supports call waiting services by exchanging hold request and acknowledge signals before relinquishing the line servicing incoming calls. Thereafter, the modem to modem session is reestablished without having to redial. The hold request may be denied or accepted, and may define the duration a modem will hold before hanging up. The holding modem maintains the session by fooling the higher protocol layers, making them believe that the modem is not on hold. Three-way calling services are also used to free up the shared line for outgoing calls while maintaining the session with holding modems. A table may be employed to screen incoming calls through a comparison of the caller ID information with that in the table. The table may be within the modem or the host computer.Type: GrantFiled: September 10, 1999Date of Patent: June 28, 2005Assignee: Silicon Laboratories, Inc.Inventors: Sverrir Olafsson, Andrew Webster, Craig E. Borden, Charles F. Raasch, Nimesh Doshi, Burk Beadle, Robert T. Otten
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Patent number: 6842509Abstract: A quick startup procedure for a modem system utilizes known characteristics of a previously established communication channel to reduce the initialization period associated with subsequent connections over the same channel. In response to the establishment of a call, the modem devices determine whether the quick connect protocol is supported. If so, then the called modem transmits a modified answer tone to the calling modem. The calling modem analyzes the signal received in response to the modified answer tone to determine whether characteristics of the current channel are similar to stored characteristics associated with a previous connection over the same channel. If a channel “match” is found, then the modem devices carry out a quick initialization routine that eliminates, abbreviates, or modifies a number of procedures or protocols that are carried out in conventional modem startup processes.Type: GrantFiled: June 25, 2003Date of Patent: January 11, 2005Assignee: Conexant Systems, Inc.Inventor: Sverrir Olafsson
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Patent number: 6829293Abstract: A system, method, and signal are disclosed for line probing. The invention provides an improved signal for line probing having desirable characteristics. In various embodiments the signal comprises a periodic sequence having good autocorrelation characteristics. The periodic sequence of the invention provides a faster and more accurate evaluation of the channel. Another embodiment of the invention comprises processing of the received sequence to determine a desired or maximum data rate for the line or channel. The invention also provides an evaluation and calculation of the noise on the line or channel.Type: GrantFiled: January 16, 2001Date of Patent: December 7, 2004Assignee: Mindspeed Technologies, Inc.Inventors: William W. Jones, Ragnar H. Jonsson, Sverrir Olafsson
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Patent number: 6819749Abstract: A fast startup procedure for a modem system utilizes known characteristics of a previously established communication channel to reduce the initialization period associated with subsequent connections over the same channel. In response to the establishment of a call, the modem devices determine whether the fast connect protocol is supported. If so, then the called modem transmits a modified answer tone to the calling modem. The calling modem analyzes the signal received in response to the modified answer tone to determine whether characteristics of the current channel are similar to stored characteristics associated with a previous connection over the same channel. If a channel “match” is found, then the modem devices carry out a fast initialization routine that eliminates, abbreviates, or modifies a number of procedures or protocols that are carried out in conventional modem startup processes.Type: GrantFiled: July 27, 1999Date of Patent: November 16, 2004Assignee: Mindspeed Technologies, Inc.Inventors: Sverrir Olafsson, Keith Chu, Burk Beadle
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Patent number: RE39165Abstract: A pulse code modulation (PCM) modem system employs a relatively white training signal to optimize the adaptive filter coefficients in the receiver equalizers. During the training mode, any line coding or equivalent spectral shaping is disabled to provide a training signal sequence having a substantially even spectral content. The presence of DC within the training signal reduces the likelihood that the error function of the equalizers will settle at a local minimum. Following the training interval, the encoder enables the line coder to condition the digital input sequences, introduce DC nulls, and reduce the detrimental effects of baseline wander.Type: GrantFiled: May 4, 2001Date of Patent: July 11, 2006Assignee: PCTEL, Inc.Inventors: Elias Bjarnason, Olafur Jonsson, Sverrir Olafsson
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Method and apparatus for synchronizing a data communications system to a periodic digital impairment
Patent number: RE38678Abstract: A pulse code modulation modem system is configured to transmit data from a first modem to a second modem over the public switched telephone network (PSTN). The PSTN employs robbed bit signaling (RBS) such that symbols affected by RBS arrive at the second modem in a periodic manner based on a period of six symbols. The modem system is configured such that signal segments are formatted and transmitted with six symbols per segment. After obtaining symbol synchronization, the second modem initializes a modulo-6 symbol counter such that the zero count corresponds to the first symbol of each received signal segment. Those symbols affected by RBS are identified and analyzed to determine optimized signal point constellations that may be used to compensate for the RBS on a symbol-by-symbol basis during subsequent encoding and decoding. Upon a loss of synchronization, the second modem resets its modulo-6 counter in response to the detection of the first symbol in a subsequent signal segment.Type: GrantFiled: May 4, 2001Date of Patent: December 28, 2004Assignee: Conexant Systems, Inc.Inventor: Sverrir Olafsson