Motorola

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.

Hands-free control system for a radiotelephone

Abstract: PCT No. PCT/US85/01672 Sec. 371 Date Sep. 3, 1985 Sec. 102(e) Date Sep. 3, 1985 PCT Filed Sep. 3, 1985 PCT Pub. No. WO87/01546 PCT Pub. Date Mar. 12, 1987.An improved hands-free user-interactive control and dialing system is disclosed for use with a speech communications device. The control system (400) includes a dynamic noise suppressor (410), a speech recognizer (420) for implementing voice-control, a device controller (430) responsive to the speech recognizer for controlling operating parameters of the speech communications device (450) and for producing status information representing the operating status of the device, and a speech synthesizer (440) for providing reply information to the user as to the speech communications device operating status. In a mobile radiotelephone application, the spectral subtraction noise suppressor (414) is configured to improve the performance of the speech recognizer (424), the voice quality of the transmitted audio (417), and the audio switching operation of the vehicular speakerphone (460). The combination of noise processing, speech recognition, and speech synthesis provides a substantial improvement to prior art control systems.

Error-resilient coding in JPEG-2000 and MPEG-4

Abstract: The rapid growth of mobile communications and the widespread access to information via the Internet have resulted in a strong demand for robust transmission of compressed image and video data for various multimedia applications and services. The challenge of robust transmission is to protect the compressed image/video data against hostile channel conditions while bringing little impact on bandwidth efficiency. This paper addresses this critical problem and provides an overview of the error-resilient approaches that have been evaluated and inserted into the emerging JPEG-2000 wavelet-based image coding standard. We also review the state-of-the-art techniques adopted in the MPEG-4 standard for robust transmission of video and still texture data. These techniques include resynchronization strategies, data partitioning, reversible VLCs, and header extension codes. The performance of these approaches under various channel conditions is evaluated.

Apparatus and method for stamping a surface

Abstract: An apparatus (100) including a support structure (104), a flexible stamp (106) having a stamping surface (110) including a predetermined pattern disposed opposite the support structure (104), a pressure controlled chamber (112) disposed above the support structure (104), and a mechanical attachment (114) affixed to the flexible stamp (106). A method is provided for stamping the surface (101) of an article (102) including the steps of i) placing the article (102) on the support structure (104) within the pressure-controlled chamber (112), ii) wetting the stamping surface (110) with a solution containing a self-assembled monolayer-forming molecular species, iii) aligning alignment patterns (118) on the flexible stamp (106) with alignment patterns (124) on the surface (101) of the article (102), iv) controllably contacting the wetted stamping surface (110) with the surface (101) of the article (102) by changing the pressure differential across the flexible stamp (106) so that contact commences at the center of the flexible stamp (106) and proceeds outwardly in a controlled manner, and v) removing the stamping surface (110) from the surface (101) of the article so that a self-assembled monolayer (134) having the predetermined pattern is formed on the surface (101) of the article (102).

Method and apparatus for transport block signaling in a wireless communication system

Abstract: User equipment determines a transport block size column indicator representative of a number of resource blocks based on a number of allocated resource blocks, an adjustment factor, and a limiting factor. The transport block size column indicator is determined by applying the adjustment factor to the number of allocated resource blocks and comparing a result of applying the adjustment factor to the number of allocated resource blocks to the limiting factor. The transport block size column indicator is selected as either the result or the limiting factor as the based on the comparison.

Statistical timing analysis using bounds and selective enumeration

Abstract: The growing impact of within-die process variation has created the need for statistical timing analysis, where gate delays are modeled as random variables. Statistical timing analysis has traditionally suffered from exponential run time complexity with circuit size, due to arrival time dependencies created by reconverging paths in the circuit. In this paper, we propose a new approach to statistical timing analysis which uses statistical bounds and selective enumeration to refine these bounds. First, we provide a formal definition of the statistical delay of a circuit and derive a statistical timing analysis method from this definition. Since this method for finding the exact statistical delay has exponential run time complexity with circuit size, we also propose a new method for computing statistical bounds which has linear run time complexity. We prove the correctness of the proposed bounds. Since we provide both a lower and upper bound on the true statistical delay, we can determine the quality of the bounds. If the computed bounds are not sufficiently close to each other, we propose a heuristic to iteratively improve the bounds using selective enumeration of the sample space with additional run time. The proposed methods were implemented and tested on benchmark circuits. The results demonstrate that the proposed bounds have only a small error, which can be further reduced using selective enumeration with modest additional run time.