The new type of boiling point detector is discussed which ' l f detects the boiling point of water in a container irrespective of the volume of water or the type of container. This detector consists of the sensor unit using a thermistor and the signal processor unit using a one-chip 4-b microcomputer. The sensor unit is covered with a stainless casing. It is located at the center of the coil heater and comes In contact with the bottom of the container in place. At the signal processor unit, the temperature signal from the sensor unit is applied to the integral A-D converter, and the digital value is calculated by the microcomputer to detect indirectly the temperature rise of the water in the container. The results are stored in the memory of the computer and are compared to determine the boiling point. As a result of the experiment, the boiling point detection accuracy is higher than 95oC and within 2 min after.n L reaching 100-C when the volume of water is 0.5-2 L and the container is Fig. 1. Appearance of surface cooking unit.made of aluminum, stainless steel, or iron.

A Phase Change Rewritable (PCR) optical disk has advantages, such as direct overwritability and high speed random access suitable for non-linear video editing, but it is necessary to increase both recording rate and capacity in order to realize high quality and long time digital video storage systems. For this purpose, this paper proposes a new Double-sided 4-head MCAV (DMCAV) method and a Mark Edge Recording (MER) technique with a 30cm diameter PCR disk.

A rewritable digital video disc recorder, using four optical heads on both sides of a 30cm disk which improves the data transfer rate up to 128Mbps for phase change rewritable media, has been developed.We achieved 19GB large capacity which realizes 20 minute Composite digital video signal recording, with new double sided multi-head MCAV method and high density mark edge recording. INTRODUCTTONA Phase Change Rewritable (PCR) optical disk has a number of advantages, among which capability of direct overwriting and elimination of the conventional need for the magnetic head are particularly attractive for video disk recorder over Magneto-Optical (MO) disk. The conventional PCR disk systems, however, lacked in both capacity and rate for long-time, high quality digital video recording.Hence, the purpose of our present study was to develop a large capacity, high transfer rate technology that permit longtime recording of high quality digital video. The new technique we have developed has the following features.At first, the recording method, unique to our development, consists of the combination of a total of four optical heads to access both sides of a disk with the Modified Constant Angular Velocity (MCAV) method. With this development both recording capacity and rate have been achieved at the same time.At second, the technique has proven that the use of both sides of a 30-cm disk achieves the recording rate of 128 Mbps and the capacity of 19 GB when combined with density improvement by the mark edge recording method. As results of these, we have realized high quality, non-compressed Composite digital video recording for 20 minutes.This paper describes the technique, focusing on the recording method and format to be used for recording on the optical disk and on signal processing procedures. O-8194-1671-1/94/$6.OO SPIE Vol. 2338 Optical Data Storage (1994) / 137 Downloaded From: http://proceedings.spiedigitallibrary.org/ on 07/01/2015 Terms of Use: http://spiedl.org/terms

AbslracL We presenl results for lhe Auclualion paramndunivity and magnelomnduclivily for a singlecryslal sample of YBa,Cu,O~-~.Bolh the paraconductivity and magnetoconductivity dala are filled lo existing theories of the Aslamazov-Larkin and Maki-Thompson mnlribulions 10 the fluctuation conduclivity. The presence of a Maki-Thompson mntribulion in the paramnductivity and magnelomnduclivily would suggesl that lhe pairing mechanism is convenlional s-wave pairing.