Eric A Dibiaso, 481118 Cornerstone Ln, Lebanon, PA 17042

7230992, Jun 12, 2007

Nov 22, 2004

10/995946

Glenn A. Walker - Greentown IN, US
Eric A. Dibiaso - Kokomo IN, US

Delphi Technologies, Inc. - Troy MI

H04K 1/10
H04L 27/28

375260, 375341, 375261, 370207

The present invention involves a method for transmitting data using an orthogonal frequency division multiplex (OFDM) transmission system, such as over a terrestrial network used in satellite digital audio radio. A OFDM signal is generated based on first input data. A variation is introduced in the OFDM signal based on second input data to generate a modified OFDM signal which is transmitted. The modified OFDM signal is decoded by performing a demodulation of the modified OFDM signal then a first and second detection to obtain the first input data and the second input data. The introduction of a variance may include introducing an additional phase offset across adjacent OFDM sub-carriers, across adjacent OFDM symbols, an additional phase offset in the OFDM signal, an additional amplitude offset in the OFDM signal, an additional amplitude augmentation in the OFDM signal, and/or a second variation in the first OFDM signal based on third input data.

7230998, Jun 12, 2007

May 18, 2004

10/847944

Glenn A. Walker - Greentown IN, US
Eric A. Dibiaso - Kokomo IN, US

Delphi Technologies, Inc. - Troy MI

H04L 27/20

375308, 375324, 375349, 375346, 375211, 375219, 375220, 455 302

The present invention provides a receiver for use in a SDAR system, the receiver including a receiving unit having satellite signal detection means for detecting a first transmit signal transmitted from a first communication satellite and a second transmit signal transmitted from a second communication satellite, the first transmit signal produced when the transmitter modulates a primary data stream with a secondary data stream on a first carrier wave associated with the first communication satellite and the second transmit signal produced when the transmitter modulates the primary and secondary data streams on a second carrier wave associated with the second communication satellite; and at least one demodulator coupled to the receiving unit and configured to demodulate the at least one of the first and the second transmit signals.

7280613, Oct 9, 2007

Sep 22, 2004

10/946678

Glenn A. Walker - Greentown IN, US
Eric A. Dibiaso - Kokomo IN, US

Delphi Technologies, Inc. - Troy MI

H04L 27/20

375308, 332103

The present invention involves a transmitter for transmitting two levels of data in a hierarchical transmission system. The transmitter has encoders, a modulator, an adjuster, and an up converter. The first encoder has a first output and capable of providing digital information based on a first level of data on the first output. The second encoder has a second output and is capable of providing digital information based on a second level of data on the second output. The modulator is coupled to the first encoder and has I and Q outputs. The adjuster is coupled to the modulator and second encoder and modifies signals on the I and Q outputs of the modulator to produce transmission I and transmission Q outputs. The up converter is coupled to the adjuster and is capable of transmitting broadcast radio signals based on the transmission I and transmission Q outputs. The modulator may include a root raised cosine filter and/or a QPSK modulator.

7295805, Nov 13, 2007

Sep 1, 2004

10/931453

Glenn A. Walker - Greentown IN, US
Eric A. Dibiaso - Kokomo IN, US

Delphi Technologies, Inc. - Troy MI

H04H 1/00

455 302, 4551881

A digital radio receiver system and method are provided for receiving signals from multiple transmission sources and providing dynamic data buffering. The system includes an antenna for receiving signals from multiple sources, a tuner for selecting certain frequency signals, and a digital demodulator for demodulating the tuned selected signals. The system also includes a memory buffer having memory locations and capable of storing data clusters. The system further has a controller for controlling the cluster of data stored in the memory buffer. The controller selects from at least first and second clusters of data, depending strength of signal of a received buffer source.

7366246, Apr 29, 2008

Dec 9, 2003

10/731570

Glenn A. Walker - Greentown IN, US
Eric A. Dibiaso - Kokomo IN, US

Delphi Technologies, Inc. - Troy MI

H04L 5/12
H04L 23/02

375262, 375340, 375341, 715705, 715786, 715796

A receiver includes a channel decoder select circuit, a plurality of communication channels, at least one maximum ratio combiner circuit, and a forward error correction circuit. The plurality of communication channels receive wireless information from channel demodulators and are in communication with respective channel decoder circuits, which are in communication with the channel decoder select circuit. The at least one maximum ratio combiner circuit receives the wireless information from the plurality of communication channels. The output of the maximum ratio combiner is communicated to the forward error correction circuit, the output of which is communicated to the channel decoder select circuit. A pseudo bit error measurement feedback signal communicated to the maximum ratio combiner from one of the plurality of channel decoder circuits. A method for finding wireless satellite signals that minimizes errors in a receiver system is also disclosed.

7386056, Jun 10, 2008

Nov 22, 2004

10/995721

Glenn A. Walker - Greentown IN, US
Eric A. Dibiaso - Kokomo IN, US

Delphi Technologies, Inc. - Troy MI

H04K 1/10
H04L 27/28

375260, 375341, 375261, 370207

The present invention provides a receiver for use in a SDAR system, the receiver including a receiving unit having satellite signal detection means for detecting a transmit signal transmitted from a satellite, the transmit signal produced when the transmitter modulates a primary data stream with a secondary data stream on a carrier wave associated with the satellite; and at least one demodulator coupled to the receiving unit and configured to demodulate the transmit signal.

7480351, Jan 20, 2009

Nov 7, 2005

11/268120

Eric A. DiBiaso - Kokomo IN, US
Glenn A. Walker - Greentown IN, US

Delphi Technologies, Inc. - Troy MI

H03D 3/22

375332, 375280

A technique for demodulating secondary data from a hierarchically modulated signal includes a number of steps. A gray coded eight phase shift key (8-PSK) hierarchically modulated signal is received that includes primary data and secondary data. An imaginary portion of the signal is determined and a real portion of the signal is determined. An absolute value of the real portion of the signal may then be subtracted from an absolute value of the imaginary portion of the signal to provide the secondary data. The gray coded 8-PSK hierarchically modulated signal may be a uniform gray coded 8-PSK hierarchically modulated signal or a non-uniform gray coded 8-PSK hierarchically modulated signal.

7499696, Mar 3, 2009

Nov 22, 2004

10/995013

Eric A. Dibiaso - Kokomo IN, US
Glenn A. Walker - Greentown IN, US

Delphi Technologies, Inc. - Troy MI

H04B 7/185
H04B 1/02
H04B 7/02
H04B 1/66
H04B 1/04
H03C 7/02
H04L 27/00
H04L 27/36

455403, 455 121, 455101, 455102, 455110, 375295, 375298, 375299

The present invention involves a method for transmitting data having primary and secondary data. A first transmit signal is transmitted from a first communication satellite wherein the first transmit signal is produced when the transmitter modulates the primary and secondary data on a first carrier wave associated with the first communication satellite, with secondary data having a first polarity. A second transmit signal is transmitted from a second communication satellite wherein said second transmit signal is produced when the transmitter modulates the primary and secondary data on a second carrier wave associated with the second communication satellite with secondary data having a second polarity opposite the first polarity.