Abstract: A tape cassette suitable for use in an 8-mm video tape recorder for recording and/or reproducing video and audio signals, which comprises a light projecting section inserting aperture formed on the bottom surface of the cassette near the front surface of the cassette between supply and takeup reels juxtaposed in the cassette, light receiving windows formed through the both side walls of the cassette for passing therethrough a light emitted from a light emitting element inserted in the light projecting section inserting aperture and a transparent portion molded integrally with the upper surface of the cassette such that the supply and takeup reels are visible through the transparent portion, wherein a transparent portion formed at least a part of a wall portion surrounding the light projecting section inserting aperture is integrally molded with the transparent portion of the upper surface of the cassette, to thereby easily manufacture the tape cassette which can prevent infiltration of dust or the like and ac

Abstract: A static random access memory (SRAM) includes a pair of p-channel metal-oxide-semiconductor (PMOS) transistors which serve as variable resistors for terminating bit lines and a control circuit for causing the PMOS transistors to have a low impedance level during read out and an intermediate impedance level during writing so that sudden d.c. current is suppressed and the voltage at the bit lines is prevented from being lowered. The variable resistor device can constitute a current mirror circuit along with a metal-insulator-semiconductor (MIS) transistor of the control circuit, so that it becomes possible to provide a stable control which is invulnerable to manufacturing tolerances.

Abstract: A method for producing an optical disc including the step of transferring a pattern of alternate projections and recesses from a stamper to a glass base plate by photopolymerization of a resin curable with ultraviolet rays, wherein the glass base plate is previously processed by surface processing by a suitable coupling agent. Before or after the surface processing with the coupling agent, the glass base plate is heated under a reduced pressure for improving bonding properties between the glass base plate and the resin curable with ultraviolet rays.

Abstract: The present invention relates to a method for soldering two kinds of parts, parts with leads and chip parts, on one-side printed board, comprising coating a cream solder on a plurality of points of a wiring pattern surface of one-side printed board and coating an adhesive for adhering parts with leads on a non-wiring pattern, adhering parts with leads to said non-wiring pattern surface by said adhesive, passing leads of the parts with leads through lead insert holes of said one-side printed board to insert the same into one cream solder on the wiring pattern surface from the side of the non-wiring pattern surface, mounting chip parts on the other cream solder on said wiring pattern surface, thereafter heating at once the whole cream solder on the wiring pattern to simultaneously reflow-solder the parts with leads and chip parts whereby the parts with leads and the chip parts can be simultaneously soldered by a single reflow soldering step.

Abstract: An apparatus for recording an information signal that includes a signal processor for processing an information signal to be magnetically recorded, n magnetic heads (n is an integer of 2 or more) provided on a rotating drum with a step of about 1/n the width of a magnetic tape and a distributing circuit for selectively supplying the processed information signal to one or more than two of the n magnetic heads, wherein the processed information signal is recorded on one or more than two track areas of the magnetic tape by the magnetic head. Thus, much data can be recorded at a high transmission rate to improve the quality of picture, and also, a high access speed can be achieved.

Abstract: A scroll compressor for use in compressing gases includes a stationary scroll member having a top surface, a movable scroll member orbiting about the stationary scroll member for compressing gases together with the stationary scroll member as it orbits about the stationary scroll member, a muffler cavity formed in the stationary scroll member to increase the size of a muffler space in the scroll compressor, a discharge port formed in the center of the stationary scroll member for discharging the compressed gases, a release port formed in an offset position from the center of the stationary scroll member, a release cavity formed in the stationary scroll member and in communication with the released port, release guide passage passing through the stationary scroll member in parallel with the top surface of the stationary scroll member in communication with the release cavity, a sealed case for housing the stationary scroll member and the movable scroll member and a release pipe connected to the release guide pa

Abstract: An image transforming method and apparatus divides an input image into a plurality of original minute rectangular segments. Calculations are performed to determine the positions of the four apexes of a new minute rectangular segment to which each of the original minute rectangular segments is to be transformed. The new minute rectangular segment is divided by a diagonal line into two triangular sections. The coordinates on the input image corresponding to the respective pixels in each of the triangular sections by interpolation using two of the sides of the triangular section except for the side made by the diagonal line used in dividing the new minute rectangular segment. The input image data are mapped on the corresponding output image based on the obtained coordinates.

Abstract: The present invention relates to a laser reproducing apparatus which reproduces recorded data recorded on a recording medium such as an optical disc, a magneto-optical disc or the like by the irradiation of a laser beam, in which the current value of a driving signal which drives a laser diode (12) is set near a value at which there is the least interference with the laser beam is by reflected-back light from the recording medium, and the irradiation by the laser beam from the laser diode (12) at the thus set current value is intermittently carried out at predetermined intervals. Also, the duration of lock pulse of this laser beam is selected to be a duration in which writing on the recording medium (11) cannot be carried out by the thus set current value. Thus, the influence exerted on the laser beam by the reflected-back light from the recording medium (11) is small so that the data can be reproduced satisfactorily.

Abstract: An apparatus and method for recording and/or reproducing digital data employing a DAT (digitial audio tape recorder) adapted to record and/or reproduce data from a computer or the like in accordance with the DAT format. Main data is recorded in a main area of a track while error detecting data for the main data recorded in the main area of the track is recorded in a sub-area of the track to thereby easily detect an error in the main data.

Abstract: A tape cassette of the type having front and back lids for covering front and rear sides of a portion of the cassette tape which passes outside of the cassette casing is further provided with a locking element for locking the front and back lids closed when the cassette is not being used.

Abstract: In an optical atmospheric link system for transmitting a light beam carrying an information signal between a transmitter and a receiver which is located apart from the transmitter, the transmitter includes a light source for generating the first light beam modulated with the information signal, a first optical system for transmitting the light beam toward the receiver, a second optical system for turning at least a portion of the light beam, and a third optical system for observing the light beam turned by the second optical system and the receiver.

Abstract: A free curved surface generating system and method in which a plurality of cross sectional curves representing cross sectional shapes in an x-y coordinate system are generated, the plurality of cross sectional curves are arranged at desired positions in the x-y-z coordinate system, respectively, and thereafter a curved surface is formed between mutually adjacent cross sectional curves through an interpolation to generate the free curved surface are disclosed.

Abstract: In a system for recording digital data obtained based on an information signal on a magnetic tape and/or reproducing digital data obtained based on an information signal from a magnetic tape, a magnetic recording apparatus comprises an encoder for producing, based on the information signal, one of plural kinds of digital data which have different transmission rates respectively, a time base processor for selectively converting a time base of digital data obtained from the encoder so as to produce modified digital data having a predetermined transmission rate, a recording modulator for producing a recording signal corresponding to the modified digital data, a recording portion provided with a rotary magnetic head device to which the recording signal is supplied and a tape guide for guiding the magnetic tape and operative to cause the rotary magnetic head device to contact with the magnetic tape for forming oblique record tracks on the magnetic tape, a head driver for rotating the rotary magnetic head device at

Abstract: A disc memory apparatus comprises: transducer means for reading and writing information on a disc; at least one disc medium having a plurality of concentric tracks each of which is divided into plural data sectors and plural servo sectors therebetween, the data signal being recorded and read by the transducer means on and from the data sectors, the servo sectors having first address region for odd one of the concentric tracks and second address region for even one of the concentric tracks, wherein first and second address signals are prerecorded in the first and second address regions respectively, the width of the address regions in a radial direction of the disc medium being substantially larger than track pitch of said concentric tracks, the first and second address regions being located at different positions in a direction perpendicular to the radial direction, and the servo sectors further having first and second marker regions the centers of which are corresponding to the centers of the odd and even on

Abstract: A detergent dispenser for clothes washing machines includes a detergent container for containing a predetermined amount of powdered detergent, the detergent container having a lower discharge outlet from which the detergent contained therein is discharged and a detergent fall preventing member displaced between a first position where the detergent is prevented from falling out from the discharge outlet of the container and a second position where the detergent discharged from the discharge outlet of the detergent container is allowed to fall out therefrom.

Abstract: During channel selection on automatic fine tuning (AFT) operation is carried out over a period longer than one vertical scanning period.

Abstract: A method for recording/reproducing digital signals is provided in which each unit of digital data for each channel is constituted by m bit of standard data and n bits of expansion data, the data of each channel are separated into the above standard data and expansion data, the standard data and the expansion data are distributed to different recording tracks and a multiple track recording is performed by stationary heads, so that the data of each channel may be expanded and the m-bit standard data and the n-bit expasion data for each channel may be handled separately from each other.

Abstract: A phase locked loop circuit is arranged such that the frequency of an input reference clock signal is selected on the basis of a first or second transmission rate of an incoming digital signal, whereby an output digital signal correctly synchronized with the incoming digital signal having the first or second transmission rate can be transmitted. Also, the phase locked loop circuit is arranged so that a first or second central frequency value and a first or second boundary frequency value are set in response to the first or second transmission rate of the incoming digital signal so that, if a frequency value of an output digital signal lies outside of a range of the first or second boundary frequency values, the frequency of the output digital signal is set to the first or second central frequency values. Thus, the phase locked loop circuit of the invention can deliver the output digital signal correctly synchronized with the incoming digital signal having the first or second transmission rate.

Abstract: A low resolution to high resolution display system arranged such that a low resolution video signal from a personal computer is written in a memory plane in response to an address based on a clock signal produced from the personal computer side, a switching circuit is provided in a video signal path of a high resolution display apparatus for switching between the memory plane and the video signal produced by the high resolution display apparatus and the memory plane is read by an address based on the clock signal of the display apparatus produced during a display window period, whereby the video signal read from the memory plane is supplied through the switching circuit to the video signal path of the display apparatus.

Abstract: Individual training stations are able to record and play back a student's own pronunciations as well as to reproduce the recorded pronunciations of the fellow students and of prerecorded voice teaching aids by means of a digital memory and controller.