Abstract: A mobile telephone system for public transportation vehicle, such as trains, cabs, etc., provides passengers with a wide variety of public services presently not available in any other system. Such services include access to facsimile machines and other peripheral devices, a range of payment options such as credit card or cash, and voice synthesized as well as visual instructions on how to operate the system making the system user friendly to an unrehearsed user.

Abstract: A passive aircraft proximity detector for use in highway vehicles. This invention includes a unique internal antenna (1) feeding a superheterodyne receiver (2). A novel reference system (3) provides phase synchronous local oscillator injection. A signal analysis system (4) determines the presence of a valid signal and activates a tracking indicator (5). The analysis system also provides range data to an indicator which displays the approximate range of the aircraft (6). A mutable timed audio alarm is also incorporated (7).

Abstract: A pressure monitoring device for indicating to the administrator of an injection to a patient that an excess of force has been exerted on the plunger and thereby the fluids contained within the syringe.

Abstract: A apparatus and method for permitting perception of the nature of a selected function of an audio/video reproduction apparatus by varying an adjustment of the function selected. The selected function (such as speaker balance, bass, treble, or fade) is identified to the user by automatically varying the adjustment of the selected function between two predetermined settings. This allows the user to adjust the audio/video apparatus without distracting his attention from the road in a moving vehicle.

Abstract: A frame construction for a radio telephone or the operating device of a radio telephone. The radio telephone comprises a frame on which printed circuit boards containing telephone electronics are secured on both sides of a substantially flat, electrically conductive frame plate. The frame plate together with ground foils of the printed circuit boards form EMI-shielding for the components located on the sides of the printed circuit boards which face the frame plate. The frame plate preferably has a raised edge to which a printed circuit board is secured. Radio telephone housing parts are located on the two sides of the frame plate to form the radio telephone housing.

Abstract: An automatically created form includes a list of items in relation to which an operation can be performed. A processor creates the form in response to facsimile transmission of another form that includes a field requesting automatic creation of a form. The data defining the image of the requesting form also includes information indicating an image destination, and the automatically created form is transmitted to the indicated destination. The requesting form can be a previously created starter form that is automatically transmitted back to a fax machine in response to an image of a blank sheet or a sheet with simple marks received from the fax machine. The starter form can include a security code as well as fields with check boxes for indicating a set of items to be listed, such as recipients of facsimile transmissions or documents or forms that could be transmitted.

Abstract: A dialed telephone connection can be implemented as an end-to-end digital connection by virtue of switched voice transmission facilities becoming more prevalent. If such a connection is detected, it is possible to transmit digital data over the connection at a much higher rate than using analog technology. A dialed voice call is emulated to set up such a connection and the connection is then tested to determine if it is end-to-end digital. If so, high speed digital data can be passed. If not, the connection is broken and then reestablished repeatedly until such a digital connection is found. In one embodiment, the calls are alternately initiated from each of the two parties involved in attempts to increase the likelihood of achieving an end-to-end digital connection. If no such connection can be obtained after a reasonable number of tries, an analog communication session can be established.

Abstract: A field coil signal transmission and tag power consumption measurement circuit for use in an inductive tag reader system. The circuit is coupled to an oscillator which provides a drive signal to a differential driver. The driver transforms the clock signal into first and second complementary drive signals. The drive signals are coupled to a field coil through a plurality of capacitors for inductively producing an output power signal. The capacitors are differentially coupled to the coil, so that each input of the coil is coupled to one of the clock signals through a separate capacitor. A bridge rectifier is coupled to the field coil opposite the capacitors for producing an output comprising a direct current (DC) element and an alternating current (AC) element superimposed on the DC element. A resistance-capacitance (R-C) filter, coupled to the bridge rectifier, provides a filtered rectifier output signal.

Abstract: The Active Sound Absorber of the invention is based on an electroacoustical transceiver defined as a bilateral electroacoustical transducer acting as both a diaphragm actuator and motion sensor, and an associated mutual inductance discriminator, in a electroacoustical positive feedback system. Selected embodiment of such a system is an unvented hearing aid where the Active Sound Absorber combats the occlusion effect.

Abstract: A base station for a mobile communications system including an antenna for transmitting a radio carrier wave to a mobile communications device and receiving signals therefrom, a coaxial external conductor including a skirt in the form of a sun shade having a length equal to a quarter wavelength of the radio carrier wave, a radio section located inside the coaxial external conductor for providing radio communication with the mobile communication device via the antenna, and a connecting section connecting the radio section to a telephone line and where the antenna is configured in the form of an upper disk of a discone antenna and where the skirt is a lower conical member of the discone antenna.

Abstract: A facsimile system includes: a telephone apparatus; a facsimile receiving device for detecting a CNG (Calling Tone) signal, which follows a call request signal from a telephone exchange, on a telephone line, and receiving a facsimile data through the telephone line if the CNG signal is detected; a switching device for selectively connecting the telephone line to either the facsimile receiving device or the telephone apparatus; a device for controlling the switching device such that the switching device connects the telephone line to the telephone apparatus if the CNG signal is not detected by the facsimile receiving device while the telephone line is connected to the facsimile receiving device; and a device for generating a control signal if the CNG signal is not detected by the facsimile receiving device.

Abstract: A system for delivering audio advertising messages to shopping carts moving through a plurality of spatially defined transmission zones arranged in the aisles of a store. In the illustrative embodiment, a plurality of transmitters of compact construction are each attached to a shelf within the store. Each shelf transmitter has a spatially defined transmission zone of selected geometry and predetermined dimensions so as to occupy an assigned region of space within one of the aisles in the store. When any one of these transmitters detects a shopping cart residing in its spatially defined transmission zone, the transmitter transmits over its spatially defined transmission zone, a modulated signal carrying an audio message provided by a playback mechanism within the transmitter. A receiver on the detected shopping cart demodulates the received modulated carrier signal and produces an audible signal of the audio message provided by the playback mechanism in the transmitter.

Abstract: A facsimile apparatus having a housing (10) for the apparatus and a telephone placing portion (12) disposed at an upper part of the housing, on which a telephone (11) connected to a public telephone network can be placed. The facsimile apparatus further including elements (18) for scanning an original by feeding the original to generate electrical signals representing image information of the original and elements (19) for recording image information applied to the apparatus through the public telephone network on a sheet. Both the scanning elements and the recording elements are disposed side by side along the direction of feeding of the original. The telephone placing portion is disposed above both the scanning elements and the recording elements to cover the upper portion of both the scanning elements and the recording elements.

Abstract: A telephone network connects a facsimile terminal and a store device. A terminal adaptor is connected between the facsimile terminal and the telephone network. A voice response unit is connected between the telephone network and the store device. A control device is connected to the voice response unit and the store device. The terminal adaptor enables the facsimile terminal to gain access to the telephone network and the voice response unit, and to inquire a communication charge on the facsimile terminal of the control device.

Abstract: Methods for improving modem performance and apparatus incorporating the methods are provided. The preferred methods comprise measuring the signal/noise ratio and intermodulation distortion (IMD) relating to signals being transmitted over a channel, and adjusting the transmitting power of the transmitting modem below a maximum permissable power in response to the measurements in order to reduce the error rate of the data transmission, the error rate being a function of both the signal/noise ratio and the IMD. Theoretically, the power can be adjusted to an optimal level, as the decrease in power increases the error rate due to signal/noise ratio according to a first function, but decreases the error rate due to IMD according to a second function. A first preferred manner of determining the final power level to be utilized is to calibrate a modem according to the techniques (e.g., Trellis precoding, etc.

Abstract: In a cellular radio system including a plurality of cells (e.g. cell sectors or micro cells) (4, 5, 8, 9, 10, 11) each normally using a respective channel for interference reduction purposes, a number of the cells are arranged in groups (6) and in the event of a cell associated with equipment moving within a group (6), all cells (4, 5, 8, 9, 10, 11) of that group use a common channel whereby to facilitate handover between them.

Abstract: For a simplified design of electrical line connections in a hearing aid, and in order to avoid solder locations, an anisotropic, electrically conductive, plate-shaped, film-shaped or mat-shaped member is arranged between interconnects of a printed circuit board. Contacts of the hearing aid components are secured to the printed circuit board.

Abstract: A stand-alone portable radio telephone unit, includes an upper part, and a lower part. The upper and lower parts have similar peripheral shapes and in combination include all of the components necessary to form a handset for connection with a main unit in a mobile phone system. An intermediate part is located between the upper and lower parts and includes radio frequency components, an antenna and battery means. The upper, lower and intermediate parts in combination include all of the components necessary to form a stand-alone portable radio telephone unit. Bringing the three parts into abutting engagement completes the required electrical connections between the parts.

Abstract: A wireless PBX system provides ease of installation without site engineering or trial-and-error placement of components within the system. In its basic form, the wireless PBX system consists of only two types of components: a control unit including an radio frequency transceiver; and fixed location terminals, such as telephones and voice/data stations, which also include radio frequency transceivers. Portable handsets are optionally included in the system to allow for customer mobility. Installation of the PBX system is achieved simply by placing the system components in the desired locations at a premises, plugging them into line power, and performing some simple programming steps including a final step of initiating an automatic configuring process. Through this process, the system automatically configures itself for optimum operation in view of the radio environment and placement of components within the system at the customer premises.

Abstract: An apparatus to effect coverage of a hearing aid housing received within a cavity of the sock housing to effect filtration of various airborne contaminants. A modification of the invention includes hair filaments arranged and mounted to the sock structure to effect coverage of the sock member and its camouflage.