Abstract: A cart for maintaining items, which are used in a cleanroom, at a predetermined cleanliness level. The cart includes a cabinet having an internal cavity and opposed first and second internal walls. The cart further includes a shelf affixed horizontally within the cavity to form top and lower compartments within the cabinet. In addition, a lower horizontal track is affixed to the cabinet above the top compartment. A lower door is slidably affixed within the lower track. Additionally, the cart includes an upper horizontal track affixed to the cabinet above the lower track and an upper door slidably affixed within the upper track, wherein the upper and lower doors are movable in a horizontal direction above the top compartment. The top compartment is substantially isolated from contamination when the upper door contacts the first wall and the lower door contacts the second wall or when the upper door contacts the second wall and the lower door contacts the first wall.

Abstract: A one pass adaptive bit rate control method. Data from a previous video field is used to calculate a quantizer scale factor for use in compressing a current video field. Large changes in compressed data size is used to detect scene changes. When a scene change is detected, a marker is inserted into the compressed data stream in place of the compressed field. An interpolated field is substituted during decompression for the scene change marker.

Abstract: A method for generating a hardware description of a multiplier/multiplier-adder for integrating a signal processing circuit includes the steps of acquiring input parameters such as a word length of multiplier factor, generating a first hardware description of a first add for adding partial products and an inputs addend, determining a redundancy index r by using the input parameters, generating a second hardware description of a second add circuit for performing a carry-add of every r bits of the output of the first add circuit, and replacing useless circuits from the hardware descriptions.

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 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: 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: 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 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 digital broadcast receiver comprising frequency specifying element for specifying a receive frequency (frequency block), content type specifying element for specifying a broadcast content type, and control element for controlling signal reception with a specified receive frequency and controlling such that a digital broadcast having a specified broadcast (program) content is identified among and selected from a plurality of digital broadcast signal according to a set of broadcast content type information. The control element, when a changed receive frequency is specified by the frequency specifying element, controls the signal reception with the new receive frequency and, if a broadcast content had been specified by the content type specifying element before the receive frequency was changed, controls such that a digital broadcast signal with the broadcast content specified by the content type specifying element is selected from a plurality of digital broadcast signals received at the new receive frequency.

Abstract: A portable telephone apparatus for communication with a base station through a radio telephone channel. A microprocessor controller controls operation of the apparatus in accordance with an operational program. A connector is used for connecting the apparatus to a fixedly wired telephone line through a modem. A digital signal processor processes voice signals. The operational program is partially stored in an Electrically Erasable Programmable Read Only Memory (EEPROM). A first Random Access Memory (RAM) temporarily stores control signals to be used for amending the operational program stored in the EEPROM. A second RAM stores a portion of the operational program which is used for controlling operation of the digital signal processor. A switch which is responsive to the controller, selectively connects the second RAM to either the controller or the digital signal processor.

Abstract: This invention relates to a method for recording a positioning signal on a disk having a projection pattern. The method includes rotating a magnetic disk having a magnetic layer on a non-magnetic substrate having a projection pattern thereon, flowing the first DC current to a magnetic head, moving the magnetic head in the direction of the diameter over the magnetic disk whereby to magnetize the whole magnetic layer of the magnetic disk in the first direction, then rotating the magnetic disk, flowing the second DC current to the magnetic head, moving the magnetic head in the direction of the diameter over the magnetic disk whereby to magnetize only the magnetic layer of the projection portion of the magnetic disk in the second direction opposite to the first direction so as to record a positioning signal on the magnetic disk.

Abstract: An add-on module for a contact printer used to manufacture a motion picture. The module enables the printing of a digital optical soundtrack on motion picture film from a sound negative using a standard contact printing process. The module includes spaced apart guide rollers and a main roller. Unexposed film is placed in contact between the main roller and the sound negative. The module further includes a fiber optic light source positioned adjacent to the sound negative for exposing the film and forming the digital soundtrack. The digital soundtrack is formed on a portion of the positive print which includes an area between each of the sprocket holes. In addition, the digital soundtrack extends from each sprocket hole to the edge of the positive print on both sides of the print.

Abstract: A memory module includes electrodes arranged on one side edge of a laminated substrate. A plurality of memory elements are mounted on the surface of the laminated substrate, wherein signal line electrodes for the memory elements are arranged on one side edge of the laminated substrate, and respective electrode terminals for a second power supply line and a second grounding line connected in parallel to a first power supply line and a first grounding line are provided on a surface of the laminated substrate. The electrodes are situated at a position at or near maximum amplitude of the potential distribution generated on the first power supply line and the first grounding line when the memory elements are driven.

Abstract: A casing which accommodates an electric circuit for generating sounds of different tones or voice sounds has a recess 11 defined in its upper panel and a loudspeaker 12 disposed therein and mounted on the upper panel for reproducing and radiating sounds or voice sounds. A plurality of tone plates can selectively be placed, one at a time, in the recess. Each of the tone plates has dots and a bar code indicative of a sound or voice sound of its own. When one of the tone plates is inserted in the recess, the dots or bar code is detected by a sensor in the recess, and the electric circuit enables the loudspeaker to reproduce and radiate a tone or voice which is indicated by the inserted tone plate.

Abstract: An improved film trap for a motion picture projector. The film trap includes a runner assembly having first and second runner elements each having a reduced thickness. The reduced thickness of the first and second runner elements enables the first and second runner elements to contact a first side of the filmstrip such that only a portion of the filmstrip which includes the sprocket holes is contacted by the first and second runner elements. The film trap further includes first and second pressure bands having a reduced thickness substantially equivalent to the first and second runner elements thickness. The first and second pressure bands urge the filmstrip against the first and second runner elements by contacting a second side of the filmstrip such that only a portion of the filmstrip which includes the sprocket holes is contacted by the first and second pressure bands.

Abstract: A cordless telephone apparatus comprising a master unit connected to a telephone line and slave units each connected to the master unit via a radio wave channel. The master unit includes a recording/reproducing circuit for recording an incoming message from a calling party on the telephone line and reproducing the recorded message in response to a request. The recording/reproducing circuit has a recording medium to record and reproduce the message, and a management area to manage the messages recorded on the recording medium. When the incoming message from the calling party is recorded on the recording medium in the recording/reproducing circuit, data for managing such message recording is registered in the management area in response to a key designation corresponding to the slave unit. And when a predetermined key operation is performed in the slave unit, the message relative to the key-operated slave unit is reproduced from the recording medium in accordance with the data registered in the management area.

Abstract: An improved frequency and phase lock detection circuit includes a first circuit for receiving a first signal and a second circuit for receiving a second signal. A detecting circuit detects that one of the first and second signals is being received by one of the first and second receiving circuits and produces a detect signal indicative thereof. A comparing circuit detects that the first and second signals have substantially the same frequency and phase and produces a compare signal indicative thereof. An output circuit receives the detect signal and the compare signal and produces a locked signal in response thereto which indicates that at least one of the first and second signals is being received and that the first and second signals are substantially identical in frequency and phase.

Abstract: A method and apparatus for controlling electrical power to a satellite broadcast receiver forming a part of a television device. The television device receives a command receiving a command (e.g. from a remote controller) to turn off electrical power. The television device determines if broadcast satellite recording is currently being executed, for example by an external VTR connected to an output port of the television device. If broadcast satellite recording is being executed, power is turned off power to a portion of the television device while retaining electrical power to the satellite broadcast receiver. If broadcast satellite recording is not being executed, power is turned off to the broadcast satellite receiver also.

Abstract: A device for preventing contamination of a clean room during a drilling or cutting operation. A box-like chamber is provided for containing a power driven tool such as a drill. One wall of the chamber includes an opening for access to the workpiece (e.g. a wall to be cut or drilled). Another wall includes an access port with a rubber glove for operating the power tool. A pigtail electrical outlet within the chamber provides electrical power to the tool. A similar chamber may be used on an opposite side of the wall being drilled in the event it must be kept clean also. Both chambers include a port for attachment to a vacuum source such as a conventional vacuum cleaner and a port for entry of air to divert debris away from the workpiece and into the vacuum cleaner. In another embodiment, a small enclosure is clamped to the body of a drill or similar tool. The enclosure includes a vacuum port for removal of the debris.