Recent Patents on Signal Processing (Discontinued) - Volume 1, Issue 2, 2011

Signal processing is a field of expertise applicable for a large variety of applications with high industrial impact and feasibility. This is why many patents in signal processing were initiated during the last few decades for large variety of data manipulation, image processing applications as well as for optimization of various devices and sub systems for communication. A large variety of applications that can benefit from the rece Read More

In this paper we present two image processing techniques allowing improving the recognition quality of remote optically recorded voice signals (the first technique) and of images taken under varied illumination conditions (the second technique). Regarding the first approach dealing with the processing of voice signals that were recorded by a patented optical technology, we present a concept that improves the quality of the r Read More

Research and development in the area of image and video compression are actively being done for over 25 years now. New algorithms and systems have been proposed by researchers to further improve the picture quality and compression ratio. This is an effort to compile some of the latest work done by the researchers in the field of image and video compression. In this paper, compression algorithm for Computed To Read More

In this paper, we have proposed a novel technique to electronically post-compensate fiber nonlinearity in 40 Gb/s long-haul WDM transmission systems on which a patent application has recently been filed to USPTO. We have analyzed this technique for both intensity and phase modulated WDM transmission system using two different dispersion maps. Our analysis shows that the proposed technique can increase the overall Read More

Router buffer overflow and random bit errors have always been a problem in the Internet. The growth in multimedia applications in mobile extensions of the Internet has increased the threat from error bursts, random errors, and packet erasures that are a manifestation of wireless channels. Source-coded error resilience has come to prominence in the H.264/AVC codec standard, and this paper reviews such innovati Read More

Recent research in communication is inclined towards modulation and assesses techniques that are more spectrally efficient to support more users per base station to reduce overall network costs and make the services affordable to subscribers. However, these signals are highly envelope varying that invokes distortion in transmitted signal due to transmitter nonlinearity and other linear impairments. Therefore, to extract o Read More

The advantages of Multi-valued logic (MVL) systems and circuits have drawn a significant interest as a coming generation technology that can be viewed as an alternative approach to solve many problems in transmission, storage and processing of large amount of information in digital signal processing. The paper presents an all-optical circuit for designing ternary (three-valued) multiplexer & demultiplexer with the help of pol Read More

Fine motor dysfunction in patients with movement disorders, such as Parkinson's disease, is characterized by slowness of movements, decrease of reaction time and involuntary movements. In this article, recent patents on detecting and assessing the said dysfunction are reviewed; their implementation in telemedicine settings, design considerations and ability to assist in dose and time adjustments are discussed. These p Read More

Speech impairment is an important symptom of Parkinson's disease (PD). This paper presents a detailed systematic literature review on speech impairment assessment through mobile devices. A two-tier review methodology is utilized. The first tier focuses on real-time problems in speech detection. In the second tier, acoustics features that respond to medication changes in Levodopa responsive PD patients are investigate Read More

The patents annotated in this section have been selected from various patent databases. These recent patents are relevant to the articles published in this journal issue, categorized by the processes and technologies related to various disciplines of signal processing sciences....