scispace - formally typeset
Search or ask a question
Institution

Motorola

CompanySchaumburg, Illinois, United States
About: Motorola is a company organization based out in Schaumburg, Illinois, United States. It is known for research contribution in the topics: Signal & Communications system. The organization has 27298 authors who have published 38274 publications receiving 968710 citations. The organization is also known as: Motorola, Inc. & Galvin Manufacturing Corporation.


Papers
More filters
Patent
17 Aug 1995
TL;DR: In this article, a monolithic thin film resonator, lattice filter including spaced apart strips of a conductive film positioned on a substrate so as to define a first set of I/O terminals, a layer of piezoelectric material positioned on the conductive material, and spaced apart conductive strips of the material orthogonal to the first strips to form cross-over areas, each defining a thin-film resonator and a second set of terminals.
Abstract: A monolithic thin film resonator, lattice filter including spaced apart strips of a conductive film positioned on a substrate so as to define a first set of I/O terminals, a layer of piezoelectric material positioned on the conductive film, and spaced apart conductive strips of a conductive film positioned on the piezoelectric layer orthogonal to the first strips to form cross-over areas, each defining a thin film resonator and a second set of I/O terminals. A plurality of portions of a dielectric film are positioned on selected cross-over areas to mass load the thin film resonators so as to lower the resonant frequency.

173 citations

Patent
Mei Yong1, Jian Yang1, Dennis Ng1
26 Oct 1995
TL;DR: In this article, a method for segmenting information bitstreams from multiple media sources into variable length packets and multiplexing and sending the packets to a shared communication link with low delay and low overhead is presented.
Abstract: The present invention provides a method (900) and device (100) in multimedia communication systems for efficiently segmenting information bitstreams from multiple media sources into variable length packets, and multiplexing and sending the packets to a shared communication link with low delay and low overhead. The packet segmentation and multiplexing are performed dynamically based on fullness of a set of information buffers that contain the information bitstreams to be transmitted, and delay-sensitivity of each information bitstream. The multi-discipline queuing scheme has been developed in this invention to control the dynamic packet segmenting and multiplexing process.

173 citations

Patent
15 Mar 2000
TL;DR: In this article, the frequency-domain channel gains were computed by compiling a set of estimated channel gains as a function of pilot sequences, a setof analytical channel gains variables, and the set of weighting coefficients variables.
Abstract: The invention computes frequency-domain channel gains by compiling a set of estimated channel gains as a function of pilot sequences, a set of analytical channel gains variables, and a set of weighting coefficients variables. A plurality of weighting coefficients are computed as a function of time and frequency correlation functions, a noise correlation matrix, and pilot sequences. A weighting matrix is computed from the weighting coefficients. After receiving a training sequence from at least one transmitter, a received data matrix is computed from the training sequence. The weighting matrix and the received data matrix are used to compute the frequency-domain channel gains. The invention also provides a method for reducing the computational complexity of estimating the time and frequency response of at least one desired signal received by at least one antenna. Also, the time and frequency response of at least one desired signal received by at least one antenna can be both interpolated and predicted with the present invention.

173 citations

Patent
21 Nov 1990
TL;DR: In this paper, a method for performing graphics Z-compare and pixel merge operations, for use in a Z-buffering system to remove hidden surfaces when displaying a three-dimensional image, is provided.
Abstract: A method for performing graphics Z-compare and pixel merge operations, for use in a Z-buffering system to remove hidden surfaces when displaying a three-dimensional image, is provided. The data processing system includes a main memory for storing data and instructions, and a graphics execution unit for executing graphics instructions. The graphics execution units are connected to an instruction sequencer, which provides instructions and data operands to the execution units, via a communications bus. In response to receiving Z-compare and pixel merge instructions, the graphics execution unit compares one or more Z-axis coordinates within a first data operand to one or more Z-axis coordinates in a corresponding bit-field position within a second data operand to determine a relative Z-axis position of each of the one or more pixels associated with the one or more Z-axis coordinates. A pixel compare result bit-vector uniquely representing the possible results of comparing each of the corresponding bit-field positions is stored in a register. Utilizing the pixel compare result vector, the graphics execution unit executes a pixel merge instruction, to selectively store the pixels in an image buffer.

173 citations

Patent
27 May 1993
TL;DR: In this article, the RF tag reader detects the resonant frequencies of the decoder RF resonant circuits and determines the one decoding modality, and then the tag reader determines the predetermined number from the decoding modalities to confirm the accurate detection of the data RF resonance circuits.
Abstract: An RF tagging system includes an RF tag (10, 30) and an RF tag reader 80. The RF tag includes a plurality of RF resonant circuits. Each RF resonant circuit is resonant at a given RF frequency. A group of decoder RF resonant circuits (12, 32) have resonant frequencies defining one of a plurality of predetermined decoding modalities. A group of data RF resonant circuits (14, 34) have resonant frequencies corresponding to a predetermined identification code when the resonant frequencies of the data RF resonant circuits are decoded in accordance with the one decoding modality. The RF tag reader detects the resonant frequencies of the decoder RF resonant circuits and determines the one decoding modality. The RF tag reader is operative in each of the plurality of predetermined decoding modalities, detects the resonant frequencies of the group of data RF resonant circuits, and decodes the resonant frequencies of the group of data RF resonant circuits in accordance with the one decoding modality to provide the identification code. The decoder RF resonant circuits may also indicate the number of data RF resonant circuits on the RF tag. The RF tag reader determines the predetermined number from the decoder RF resonant circuits to confirm the accurate detection of the data RF resonant circuits. The RF tag reader, when selecting a decoding modality in accordance with the detected resonant frequencies of the decoder RF resonant circuits, determines various frequency bands and alters the RF tag reader frequency detection operation for accurate detection of the data RF resonant circuits.

172 citations


Authors

Showing all 27298 results

NameH-indexPapersCitations
Georgios B. Giannakis137132173517
Yonggang Huang13679769290
Chenming Hu119129657264
Theodore S. Rappaport11249068853
Chang Ming Li9789642888
John Kim9040641986
James W. Hicks8940651636
David Blaauw8775029855
Mark Harman8350629118
Philippe Renaud7777326868
Aggelos K. Katsaggelos7694626196
Min Zhao7154724549
Weidong Shi7052816368
David Pearce7034225680
Douglas L. Jones7051221596
Network Information
Related Institutions (5)
Intel
68.8K papers, 1.6M citations

93% related

Samsung
163.6K papers, 2M citations

91% related

Hewlett-Packard
59.8K papers, 1.4M citations

89% related

IBM
253.9K papers, 7.4M citations

89% related

Bell Labs
59.8K papers, 3.1M citations

88% related

Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20232
20229
202129
2020131
2019134
2018144