A large number of electrons can be fixed in S1O2, Al2O3 and Ta2O5 low-resistive insulating films (ρ=107-108 Ωcm at1-5 × 105 V/cm) deposited by the electron beam heating method because these films have oxygen starved states. When an electric field of about 7 × 105 V/cm is applied to the films, the electric field is clamped, and a considerably large current flows, similar to an avalanche phenomenon. By placing these insulating films on both sides of the phosphor film for electron emitting layers, the gradient of the luminance vs voltage curve becomes steep (2300 cd/m2 at 30 V above from threshold voltage). High luminescence (3700 cd/m2 at 1 kHz sine wave voltage) can be obtained by depositing high-resistive insulating SiO2 films of 1012-4014 Ωcm (at 1 × 106 V/cm), as current limiting layers, outside the electron emitting layers. This device worked up to 110 V from the threshold voltage.
The image quality of mobile telephone facsimiles is frequently degraded by improper actions at the receiving modem due to several problems not present in standard phone lines. This paper describes a method for improving facsimile modem functions based on the results of field experiments. We conducted field experiments, and analyzed the actions of the receiving modem functions by using a facsimile simulator. This research notes the continuity of modem function control signals, especially carrier recovery and timing recovery functions, which are used in designing a method to improve carrier recovery and timing recovery functions. Also introduced is a new indicator of improvement to verify the effectiveness of this method. The results of field experiments confirm that the image quality can be improved.
We have already proposed an object extraction method for still images which can automatically extract an object after it is roughly specified. This paper proposes a new method which is based on the still extraction method. Based on only the input of rough boundary lines for the first two fields, this new method can automatically extract an object from moving images by conducting object extraction of the field image and generating the next rough boundary. To generate the next rough boundary the moving vectors between the two previous objects are used. The next boundary line is predicted using a vector of the whole region and expanding it to a rough boundary line using the vectors of the boundary pixels. This improves the accuracy of extraction. This paper also describes applications to objects with changing topological features. Moreover, a new soft-key technique for natural synthesis is also proposed. It can make a soft key by considering local edge strength and moving vectors.