Johannes Sturm

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In this paper an optoelectronic receiver IC for optical data storage applications is presented. The IC was developed in a 0.5¿m BiCMOS technology with integrated PIN-photodiodes. It includes a new architecture of high-speed and low-noise transimpedance amplifiers with a gain range of 130 ¿ to 270 k¿ programmable with a serial interface. The bandwidth is 260(More)
This paper discusses a continuously tunable linear MOS resistor with bi-directional characteristics. The proposal is based on a 2<sup>nd</sup> order nonlinearity cancellation and is implemented by quasi-floating-gate (QFG) technique. The resistor is optimized for speed, noise and linearity, which makes it well-suited for tunable RF amplifiers. Parallel(More)
Two integrated color detectors are presented as a solution for low cost color sensing applications. The color detection is based on lateral carrier diffusion and wavelength-dependent absorption-depth. The proposed detectors are implemented in a standard 130 nm CMOS technology without process modification or color filters. Three independent output signals(More)
Telecooperation is used to support care for trauma patients by facilitating a mutual exchange of treatment and image data in use-cases such as emergency consultation, second-opinion, transfer, rehabilitation and out-patient aftertreatment. To comply with data protection legislation a two-factor authentication using ownership and knowledge has been(More)
This paper decribes an approach for extending tele-collaboration to the patient and allowing the patient's participation by accessing and providing data and thereby keeping the responsibilty for maintaining a personal health record with the patient. The approach has been implemented and is in use with the nationwide tele-collaboration network TKmed.
Tele-collaboration between medical professionals is well established for specialties like radiology, cardiology or pathology. Typically these applications do not allow for ad hoc participation of non-registered users like patients and / or medical professionals. This paper describes an approach for extending these tele-applications to non-registered users(More)