Abstract: An RDS receiver capable of extracting an AF list from the RDS data and selecting a broadcasting station of any of the frequencies on the AF list. The receiver is equipped with functions of selecting, during reception of a desired broadcast of one frequency, a station of the other frequency on the AF list by manipulation of a predetermined key; checking the reception state of the RDS data from the selected broadcasting station; checking the PI code to detect if the result of the preceding check is satisfactory or not; and picking up the broadcast from the selected station upon coincidence of the checked PI code with the PI code of the aforesaid one frequency.

Abstract: An electrostatic loudspeaker has electrodes 24 and 26 arranging multiple plate electrodes 24A to 24D, 26A to 26D insulated each other on both sides of movable electrodes 12, thereby being capable of efficiently producing a large sound pressure level.

Abstract: A system which enables removal of phosphor from a CRT front panel flange. The system includes an air operated valve connected between a water supply and a nozzle. The air operated valve may be incrementally opened and closed, which enables a continuous stream of water to be discharged from the nozzle onto the phosphor to remove the phosphor. In addition, the system includes an air supply and a pair of speed controllers which control the rate at which the air operated valve opens and closes.

Abstract: A remote control device controls an electronic system that has a number of functions. The remote control device has a limited number of function keys, and certain keys correspond to different functions of the electronic system. In order to permit discrimination of the function keys, the length of time during which the function key is actuated is employed in the electronic system. To prevent erroneous control caused by artificial interruption of the control signal, the remote control device appends one of two different time code signals to the key code corresponding to the actuated function key, whereby discrimination of the actuation time at the electronic system is made possible.

Abstract: A radio receiver of synthesizer type having a phase-locked loop therein and capable of selecting a desired broadcasting station by frequency conversion of a reception signal in conformity with an oscillation signal obtained from the phase-locked loop. The receiver includes a data table including frequency data for receiving programs from broadcasting stations, and time data indicative of the broadcast start time of each station; a timer circuit; a memory for the timer; and station select keys. When desired frequency data has been selected out of the data table by depressing one of the select keys for timer reservation, the selected frequency data and the time data corresponding thereto are read out from the data table and are written in the timer memory.

Abstract: An IC card loading detecting apparatus utilizing an input/output terminal portion of an IC card which houses therein a central processing unit (CPU) has a ground contact (6e) and a detection sensor contact (7) provided on an interface portion (6) of a terminal equipment (4). The detection sensor contact is brought in contact with a ground terminal (2e) of an input/output terminal portion (2) of an IC card (1) after the ground contact is brought in contact with the ground terminal when the IC card is inserted into the equipment and is disconnected from the ground terminal before the ground contact is disconnected from the ground terminal when said IC card is ejected from the equipment.

Abstract: A method and apparatus for performing color compression uses human factors to weight a distance metric in order to select a set of k presentation colors to represent n colors in an original image, where n>k. This same distance metric is used as part of a process to select an optimal mapping of the original image pixels to the presentation colors. The presentation colors are selected based upon a data clustering scheme in which clusters of colors are selected based upon their respective distance from each color within a given cluster and from colors in other clusters. Colors in different clusters are required to be farther apart than colors in the same clusters. This accounts for colors with high importance in accurately presenting the presentation image but having low overall occurrence in the image file.

Abstract: A decorative attachment for a lace-up type shoe which simulates a fold-down shoe tongue. A tongue simulating portion, having a top surface and a bottom surface, a top end and a bottom end, substantially covers a lace and knot portion of the shoe. The tongue simulating portion is preferably tapered to be narrower at the bottom end than at the top end. A decorative indicia is silkscreened to the top surface of the tongue simulating portion, and preferably represents a foot of a mascot for an athletic team. A strap extends from the end of the tongue simulating portion and is folded under the laces of the shoe. The strap has an upper surface which lies adjacent the lower surface of the tongue simulating portion when the strap is folded under the laces of the shoe and sandwiches the laces between the bottom surface of the tongue simulating portion and the upper surface of the strap. The tongue simulating portion and the strap are cut from a single sheet of leather, canvas or plastic material.

Abstract: An improved squeegee holder for screen printing. A squeegee with a diamond or square shaped portion is clamped between two clamping plates inside V-shaped grooves in the clamping plates. Corner relief portions are provided within the clamping plates so that the corners not in use are not damaged. The clamping plates are aligned by two alignment pins and screwed together by a threaded rod with a handle. A spring surrounds each of the alignment pins urging the two clamping plates apart so that they separate when the screw handle is loosened.

Abstract: Signals representing navigation messages from four GPS artificial satellites are received by a GPS receiver and supplied to receiving processors of respective channels, which spectrally reverse-spread and demodulate the signals by way of PSK to produce the navigation messages. The navigation messages are then supplied to a CPU that determines the position of the GPS receiver using satellite time and orbit data contained in the navigation messages. The CPU determines whether each channel is synchronized or not based on the level of a spectrally reverse-spread output (correlated output) signal. If a channel is out of synchronism, the CPU effects a synchronization process. After the synchronization process, the CPU obtains time base data equal to or higher than a bit number. To obtain such time base data in a channel after the synchronization process, the CPU uses time base data equal to or higher than a bit number of another channel that has already been synchronized.

Abstract: An image display apparatus is described for reducing the possibility of the occurrence of minor discomforts such as headaches, eyestrain, fatigue and the like in users. A symbol indicating distance such as 1m, 3m, or .infin. is displayed on an outer periphery of a virtual image adjusting knob. When the user aligns a mark on the virtual image position adjusting knob with a position corresponding to one of the predetermined symbols, the virtual image is set so as to be displayed at a position corresponding to the symbol. Consequently, the user can more easily recognize the displayed position of the virtual image so that the generation of a minor discomfort due to long term use which is more than necessary of the image display apparatus is substantially reduced.

Abstract: There is a communication system using a bi-directional bus, which includes a plurality of devices (e.g., TV image receiver or video tape recorder, etc.) connected to each other.

Abstract: A device for preventing contamination of a clean room during the performance of unclean work. Wall members are provided to be connected in series, to surround and isolate the unclean work. Each wall member includes an interlocking receiving channel that can be slipped over the frame member of an adjacent wall member. This allows the wall members to be connected in series. Each wall member also has wedging means that allows the wall member to be tightly wedged between the ceiling and floor of the clean room, to prevent contaminants produced by unclean work from traveling from the work area to the rest of the clean room. If the unclean work includes making an opening in the wall of the clean room, a similar arrangement can be constructed on the opposite side of the wall, if that area also needs to be kept clean.

Abstract: A speaker system comprising a speaker housing detachable from the body of the television receiver, the detachable speaker housing having first and second sides; a low frequency component speaker disposed in a lower portion of the first side of the detachable speaker housing; and, two high frequency component speakers, wherein a first of the two high frequency component speakers is disposed in an upper portion of the first side of the detachable speaker housing and a second of the two high frequency component speakers is disposed in a lower portion of the second side of the detachable speaker housing.

Abstract: A signal transmitting and receiving apparatus includes a transmitting circuit block which has a carrier signal supplying portion for supplying first and second carrier signals having the same frequency and a relative phase angle difference of substantially ninety degrees to be used for producing a transmissible digital phase-modulated signal. A receiving circuit block in which received digital data are obtained is based on a received digital phase-modulated signal, wherein the carrier signal supplying portion comprises a carrier signal generator for generating an additional carrier signal having a frequency twice as high as the frequency of each of the first and second carrier signals. A first flip-flop circuit produces the first carrier signal based on the additional carrier signal. A second flip-flop circuit produces the second carrier signal based on the additional carrier signal having been phase-inverted.

Abstract: An rotary drum head for recording and/or reproducing a signal on slanted tracks formed on a magnetic tape. A chassis is provided with a rotary head drum unit having a lower stationary drum mounted on the chassis in an inclined position. A rotary drum is rotatably and coaxially mounted above the lower stationary drum. A transducer is mounted on a periphery of the rotary drum. A motor rotates the rotary drum. An upper stationary drum is coaxially mounted above the rotary drum wherein an upper portion of the upper stationary drum at the farther side from the chassis is cut so that total height of the rotary head drum unit is reduced.

Abstract: A reel base braking mechanism for a reel base of a video tape recorder in which the number of assembly parts can be reduced and an accurate braking timing can be obtained by employing a so-called one-way mechanism using a plane cam. In a ganged relation with a slide operation of a slide plate on which a plane cam formed of first and second guide grooves is formed when a tape loading and tape unloading are carried out, a pin of a braking arm is selectively engaged with the first and second guide grooves to rotate the braking arm to control the timing at which said supply-reel base is operated with brakes-on and off.

Abstract: A tool for etching at least one selected area of a silicon dixoide layer on a wafer. The tool includes a container which is partially filled with hydrofluoric (HF) acid. The tool further includes a template having an aperture extending between each selected area and the container. Vapors of the HF acid pass through each aperture to contact and etch each selected area in order to expose a test die on the wafer. An O-ring is associated with each selected area for sealing each of the selected areas from the remaining areas on the silicon dioxide layer such that substantially only the selected areas are etched by the vapors.

Abstract: A double-deck video tape recorder has two tape cassette slots defined in a front panel thereof for inserting and ejecting respective magnetic tape cassettes therethrough. The double-deck video tape recorder also has a pair of drive mechanisms disposed in a housing for recording information on and reproducing information from the magnetic tape cassettes inserted in the respective drive mechanisms through the tape cassette slots. When an edit direction key is pressed, a control system places one of the drive mechanisms in a playback mode and another of the drive mechanisms in a recording mode. When a start/pause key is pressed, the control system starts to operate the one of the drive mechanisms to reproduce recorded information from the magnetic tape cassette inserted therein and also to operate the other drive mechanism to record the reproduced information in the magnetic tape cassette inserted therein.

Abstract: A multi-mode audio imaging control device having unitary control element for use in recording and reproducing of multi-channel audio programs. The imaging control device includes a first channel input and a second channel input, four variable resistors for variably controlling the signal input from the first channel input and the second channel input to the inputs of a first differential amplifier and a second differential amplifier. The four variable resisters are coupled together so as to be simultaneously varied in accordance with a common control mechanism.