Abstract: An image processing apparatus that can convert an interlaced signal generated by the 3-2 or 2-2 pull-down process, to a progressive signal without degrading the quality of the image represented by the interlaced signal, even if the interlaced signal contains an ordinary 60-fields/sec signal. The apparatus has a progressive conversion unit 11. The progressive conversion unit 11 generates an intra-field interpolated signal and an a motion-adaptive interpolated signal to convert an interlaced signal generated by the 3-2 or 2-2 pull-down process and containing an ordinary 60-fields/sec signal, to a progressive signal. The unit 11 then determines, for each pixel, whether the intra-field interpolated signal contains a double-image error. If a double-image error is detected, the unit 11 replaces, for each pixel, the intra-field interpolated signal by the motion-adaptive interpolated signal.

Abstract: A determining portion first determines which an interpolation pixel position (a target position of image signal) which is positioned in a field that precedes a current field by one field is included in a motion region or a still region by using an image signal of current field and an image signal of two fields before to obtain a determine result of this time. The determining portion finally determines which the interpolation pixel position is included in a motion region or a still region based on the determined result of this time and the history information, which is read out of a memory through a history-information-read-processing portion, on a determined result of past predetermined times(s) corresponding to the interpolation pixel position to obtain a determined result. The memory stores the history information on a determined result of past predetermined times(s) corresponding to each interpolation pixel position.

Abstract: Errors in interpolation when using diagonal interpolation can be reduced, thereby high-quality intra-field interpolation can be achieved. A further upper data line (41) and an upper data line (42) are inputted into an upper diagonal correlation detection portion (21), and the upper data line (42) and a lower data line (43) are inputted into a lower diagonal correlation detection portion (22). The lower diagonal correlation detection portion (22) determines correlation of pixels on actual data lines above and below an interpolation point in a left diagonal direction, a central direction and a right diagonal direction around the interpolation point. The upper diagonal correlation detection portion (21) determines correlation of pixels on actual data lines above and below an auxiliary interpolation point, which is secondarily set, in a left diagonal direction, a central direction and a right diagonal direction around, for example, the auxiliary interpolation point.

Abstract: Disclosed herein is an image signal processing apparatus configured to convert an interlaced signal into a progressive signal, including: a first conversion unit; a second conversion unit; a decision unit; and a selection unit.

Abstract: An image processing apparatus converts an interlaced signal including a signal converted so as to be matched to a frame rate of an input video signal with original images arranged on a basis of a predetermined sequence as the video signal into a progressive signal. The image processing apparatus includes a field-interpolated signal generator generating a progressive field-interpolated signal by interpolating a signal at a selected position corresponding to a scanning line to be interpolated in a present field, the signal at the selected position belonging to one of a field preceding the present field and a field succeeding the present field; and a double image detector determining whether a pixel in the field-interpolated signal forms a part of a double image, and replacing a pixel in the field-interpolated signal which forms a part of a double image in the field-interpolated signal with a predetermined substitute signal.

Abstract: An image processing apparatus that can convert an interlaced signal generated by the 3-1 or 2-2 pull-down process, to a progressive signal without degrading the quality of the image represented by the interlaced signal, even if the interlaced signal contains an ordinary 60-fields/sec signal. The apparatus has a progressive conversion unit 11. The progressive conversion unit 11 generates an intra-field interpolated signal and an a motion adaptive interpolated signal to convert an interlaced signal generated by the 3-2 or 2-2 pull-down process and containing an ordinary 60-fields/sec signal, to a progressive signal. The unit 11 then determines, for each pixel, whether the intra-field interpolated signal contains a double-image error. If a double-image error is detected, the unit 11 replaces, for each pixel the intra-field interpolated signal by the motion-adaptive interpolated signal.

Abstract: A determining portion first determines which an interpolation pixel position (a target position of image signal) which is positioned in a field that precedes a current field by one field is included in a motion region or a still region by using an image signal of current field and an image signal of two fields before to obtain a determine result of this time. The determining portion finally determines which the interpolation pixel position is included in a motion region or a still region based on the determined result of this time and the history information, which is read out of a memory through a history-information-read-processing portion, on a determined result of past predetermined times(s) corresponding to the interpolation pixel position to obtain a determined result. The memory stores the history information on a determined result of past predetermined times(s) corresponding to each interpolation pixel position.

Abstract: Errors in interpolation when using diagonal interpolation can be reduced, thereby high-quality intra-field interpolation can be achieved. A further upper data line (41) and an upper data line (42) are inputted into an upper diagonal correlation detection portion (21), and the upper data line (42) and a lower data line (43) are inputted into a lower diagonal correlation detection portion (22). The lower diagonal correlation detection portion (22) determines correlation of pixels on actual data lines above and below an interpolation point in a left diagonal direction, a central direction and a right diagonal direction around the interpolation point. The upper diagonal correlation detection portion (21) determines correlation of pixels on actual data lines above and below an auxiliary interpolation point, which is secondarily set, in a left diagonal direction, a central direction and a right diagonal direction around, for example, the auxiliary interpolation point.

Abstract: A switching regulator including: a switching element connected to an input DC signal and operating for turning-on and -off the input DC signal to produce an AC signal such as a rectangular wave signal; a rectifier for rectifying the AC signal thereby generating an output voltage; a circuit for producing a frequency-variable triangular wave signal having a constant amplitude; a comparator for comparing the triangular wave signal with the output voltage of the rectifier thereby obtaining a pulse-width modulated signal used for controlling the operation of the switching element; a modulation signal generator for generating a modulation signal having an amplitude variable in asynchronism with the frequency of the triangular wave signal; a sampling and holding circuit for sampling the modulation signal at a timing in synchronism with the frequency of the triangular wave signal or preferably at the timing of a maximum or minimum value of the triangular wave signal and holding the sampled modulation signal; and a ci

Abstract: A magnetic recording and/or reproducing apparatus has incorporated therein a tape cassette adapter which can house therein a small tape cassette and which has a mechanism for drawing out a magnetic tape from the small tape cassette to attain nearly the same tape travel path to that of a large tape cassette in order to load the magnetic tape on a tape drive mechanism. The tape cassette adapter can have a position that it will not interfere with the loading and unloading of the large tape cassette, a position where at least a part of the tape cassette adapter is projected outside from the apparatus so that the samll tape cassette can be housed into or removed from the adapter, and a position where the drawn-out magnetic tape is driven by a tape drive mechanism of the apparatus. Either the small or large tape cassette can be easily loaded on or unloaded from the apparatus.

Abstract: A method and apparatus is provided for effecting dehydration of a water-containing substance held in a receiving compartment formed in an intervening space between a cathode and an anode by means of the electro-osmotic force of a microporous membrane. The apparatus of this invention has a semipermeable membranes disposed as diaphragms for the receiving compartment and the microporous membrane disposed on the anode side of the diaphragms arranged on the cathode side. It effects the dehydration of the water-containing substance by passing electric current between the two electrodes and discharges the water resulting from the dehydration through a space formed between the microporous membrane and the cathode side diaphragm. By this invention, various water-containing substances such as aqueous solutions, colloids, pastes, dispersions, and gels, which the conventional methods and apparatuses dehydrate with great difficulty, can be dehydrated at high speed with high efficiency.