The present invention provides a portable telephone which comprises a microphone 22 for speech transmission, cameras 3, 30 arranged on a casing, and a control circuit 10. The control circuit 10 varies the sensitivity of the microphone 22 in accordance with a photographing direction of one camera being operated.

A surveillance system featuring a camera that is directed to focus on a location where a noise has been generated and display an image of the location. The system includes an omnidirectional camera having a lens for viewing a 360.degree. field of view, a visual memory for storing visual data at addresses representing the field of view, an omnidirectional audial detector for detecting the direction of location of a source of a signal, a display selection means for selecting visual data from one o...

A wireless mobile communication network allows mobile, nodes, such as cellular telephone, and other types of mobile transceivers, to communicate with a fixed base station and directly with one another. This mobile to mobile communication capability is exploited through the formation of a local link where nodes with excess processing and bandwidth capacity forward messages at the request of the base station. The formation of the local link is adaptive and does not require a central controller. Th...

A method and apparatus for performing a radix-4 fast Hadamard transform (FHT) with reduced complexity and for directly determining the maximum output of a fast Hadamard transform using either a radix-4 transform or radix-2 transform without actually generating the outputs. The radix-4 fast Hadamard transform is implemented using only seven operations. To find the maximum value of the output of a fast Hadamard transform and its corresponding index, the N-1 stages of a conventional N stage fast Ha...

This invention is a device for translatably positioning a patient along a bed. The device has a motor connected to a series of pulleys. A corresponding series of straps are attached at one end to a respective pulley and at the other end to a bed sheet. As the pulleys are rotated by operation of the motor, each strap is wound around its respective pulley thereby causing the associated sheet to be drawn in the general direction of the pulleys. The device may be operated by the patient or a caregiv...

An ornamental wheel cover integrally retained on the lug nuts of a vehicle wheel that provides positive positioning of the cover to the lug nuts. The cover is provided with a number of elongated tubular extensions axially projecting therefrom that are each partially slotted to provide a plurality of cantilevered fingers. Each finger has an undercut groove that positively positions the cover to the lug nuts of the wheel. When the cover is attached to the wheel, the elongated tubular extensions ar...

A position detecting sensor includes a magnet, a magnetic detecting element, and a yoke adjacent to or near the magnet. A detected member is positioned at one side of the position detecting sensor so as to be adjacent to or away from the position detecting sensor. The magnet is oriented to generate a magnetic line of flux which flows in a direction complying with an extending direction of the detected member. The magnetic detecting element is positioned in an area in which a magnetic flux densit...

Terminal management information concerning a plurality of communication terminals of a user is managed. When a call addressed to the user is initiated, one or more terminals that can accept the call is identified by referring to an ability needed for a communication involved in the call and the terminal management information concerning the plurality of communication terminals managed by the step (a). Information involved in the call into items of information to be sent to the above one or more ...

A television conference system enables a plurality of participants to communicate with each other using terminal devices connected to a controller via information transfer system. Each of the terminal devices are provided with a display for displaying a participant making a remark. The television conference system includes a speech quantity information obtaining system that obtains speech quantity information related to quantity of speech of each of the plurality of participants during a confere...

The present invention relates to a system and method for extending the coverage area and communication capacity of a spread-spectrum based wireless network through the use of intelligent repeaters. The system comprises a wireless communication network augmented with low cost channel selective repeaters that is capable of repeating only desired signals, thereby suppressing undesirable interference and increasing network capacity. The repeaters can be integrated into an existing wireless network w...