POWER EFFICIENT WIRELESS DATA LINKS FOR BIOMEDICAL IMPLANTS
Presented by:
Arun Vargis Thomas
S7-T1,
#12
CET

OVERVIEW
Biomedical implants
Relevance of power efficient implants
Technology used
Implementation
Performance
Conclusion.



BIOMEDICAL IMPLANTS
A device fitted inside human body to check the internal conditions.
Mostly electronic.
Size kept as minimum as possible.


IMPORTANCE OF POWER- EFFICIENT IMPLANTS
Battery Life of implants is Limit ....etc

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please send matlab code for retinal blood vessel extraction from the retinal image
my email is [email protected]
Thank you ....etc

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Powering and Communicating with mm-size implants



Power sources for implants


Electromagnetic power transfer
10 to 1000 μW/sq.mm
EM field radiated by transmitter in vitro.
Antenna in vivo receives EM energy.
Rectifier & regulator produce DC voltage.


Electromagnetic Power Transfer


Antenna
Size considerations.
Optimum frequency.

Safety consideration-
SAR-Specific Absorption Rate
A measure of the rate at which en ....etc

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ABSTRACT
The Virtual Retinal Display„¢ (VRD„¢) technology also known as a retinal scan display (RSD) or retinal projector is a new display technology being developed at Microvision Inc. The displayed image is scanned onto the viewer™s retina using low-power red, green, and blue light sources. Microvision™s proprietary miniaturized scanner designs make VRD system very well suited for head-mounted displays. In this paper we discuss some of the advantages of the VRD technology, various ocular designs for HMD and ot ....etc

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A virtual retinal display (VRD), also known as a retinal scan display (RSD), is a new display technology that draws a raster display (like a television) directly onto the retina of the eye. The user sees what appears to be a conventional display floating in space in front of them. In the past similar systems have been made by projecting a defocused image directly in front of the user's eye on a small screen, normally in the form of large sunglasses. The user focused their eyes on the background, where the screen appeared to be floating. The d ....etc

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Abstract
The Virtual Retinal Display (VRD) is a unique display technology developed at the Human Interface Technology Laboratory for Virtual Reality and other display applications which require high-resolution in a low-profile, portable head-mounted package. By scanning modulated light directly onto the retina of the eye,Here eliminated the need for screens and heavy, expensive imaging optics while allowing for higher resolution and wider field-of-view. stereoscopic, full color, very high resolution (4K x 3K pixels), 80 Hz refresh display wh ....etc

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This article describes speech processing in cochlear implants(CI).Cochlear implant (CI) is a prosthetic device that allows partial restoration of hearing in profound hearing
impaired people..In this method,speech signal is analysed using Descete Wavelength Transform(DWT).Comparison with traditional filter bank analysis methods showed that the WT could be a suitable method for speech coding in CIs and information loss was minimal.Filter-bank approach uses a band of band-pass filters for estimating the signal spectral content in all the CI stim ....etc

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Virtual Retinal Display

Information displays are the primary medium through which text and images generated by computer and other electronic systems are delivered to end-users. While early computer systems were designed and used for tasks that involved little interactions between the user and the computer, today's graphical and multimedia information and computing environments require information displays that have higher performance, smaller size and lower cost.

The market for display technologies also has been stimulated by the increasi ....etc

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VIRTUAL RETINAL DISPLAY

The technologies of virtual reality (VR) and augmented reality (AR) are the new paradigm for visual interaction with graphical environments. The features of VR are interactivity and immersion. To achieve these features, a visual display that is high resolution and wide field of view is necessary. For AR a visual display that allows ready viewing of the real world, with superimposition of the computer graphics is necessary. Current display technologies require compromises that prevent full implementation of VR and AR. ....etc

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Design a New Speech Encoder for Cochlear Implants Using DRNL model.
Agenda:
Introduction.
Cochlear implant devices.
Methodologies.
Comparisons.
Proposed methodology.
Conclusion.

Introduction
Today, a prosthetic device, called cochlear implant, can be implanted in the inner ear and can restore partial hearing to profoundly deaf people.
Prosthetic device processors utilize the channel vocoder .





C.I Devices
Methodologies
Single Channel implants:
It provide electrical stim ....etc

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