A serial intelligent cell (SIC) and a connection topology for local area networks using Electrically-conducting media. A local area network can be configured from a plurality of SIC's interconnected so that all communications between two adjacent SIC's is both point-to-point and bidirectional. Each SIC can be connected to one or more other SIC's to allow redundant communication paths. Communications in different areas of a SIC network are independent of one another, so that, unlike current bus topology and star topology, there is no fundamental limit on the size or extent of a SIC network. Each SIC can optionally be connected to one or more data terminals, computers, telephones, sensors, actuators, etc., to facilitate interconnectivity among such devices. Networks according to the present invention can be configured for a variety of applications, including a local telephone system, remote computer bus extender, multiplexers, PABX/PBX functionality, security systems, and local broadcasting services. The network can use dedicated wiring, as well as existing wiring as the in-house telephone or electrical wiring.

Local area network of serial intelligent cells

A method and an apparatus for upgrading an existing service outlet (e.g. LAN, telephone, power or CATV outlet) in a house by adding functionality thereto. The functionality is added by an add-on module, connected electrically and secured mechanically to the existing outlet. Several attachment devices are exampled, including surface attachment, side clamping, snap locking, strap securing and fastening screws. The add-on module may include a service connector for retaining the basic existing outlet function. The module may be attached in a permanent way or by using a detachable solution.

Outlet add-on module

A network for transporting power and multiplexed data and digital telephone signals. The network includes at least three nodes and first and second wiring segments in a building for carrying the multiplexed data and digital telephone signals, and at least one of the segments is configured to additionally carry a power signal. A power consuming component is connected to the at least one wiring segment and is powered by the power signal carried by that segment. Each wiring segment connects a different pair of the nodes together to form, with nodes nodes, a packet based bi-directional communication link. One of the nodes contains communication link composed of a repeater, a bridge, or a router connectable to a data unit. At least one of the nodes is connected to a remote data unit external to the building for coupling the remote data unit to at least one of said communication links.

Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets

Three embodiments of a tunable ferroelectric transmitting system are included. Each embodiment includes a tunable oscillator and a tunable antenna. Two embodiments include a negative resistance diode, the frequency of oscillation being controlled by a single crystal tunable ferroelectric resonator. The third embodiment uses a transistor. The tunable antenna is made of a single crystal tunable ferroeletric resonator. All conducting depositions are made of films of a high Tc superconducting material.

High Tc superconducting tunable ferroelectric transmitting system

A device for a LAN, containing an integrated adapter that converts digital data to and from analog video signals, allowing the use of analog video units in a digital data network or telephone line-based data networking system, eliminating the need for digital video units or external adapter. The device may include a hub for connecting an analog video signal via an adapter, and retaining the data network connection. In such an environment, the data networking circuitry as well as the analog video adapters are integrated into a telephone device, providing for regular telephone service, analog video connectivity, and data networking as well. In such a configuration, the device would have a standard telephone jack, an analog video jack and at least one data networking jack. Such device can be used to retrofit existing LAN and telephone wiring, and original equipment in new installations.

Outlet with analog signal adapter, a method for use thereof and a network using said outlet

A power line communication MODEM includes a rectification circuit for converting an AC power source to a DC power source, a MODEM circuit to which a DC voltage is supplied from the rectification circuit, a USB connector connected to the MODEM circuit, and a signal overlapping circuit for overlapping a signal processed by the MODEM circuit with the AC power source, wherein the rectification circuit supplies the DC voltage to the USB connector.

Power line communication modem capable of simultaneously supplying power and exchanging data

A digital television signal receiving tuner system is
formed of a tuner (1) and an intermediate frequency circuit
(2). The tuner has a first mixer (6) that converts a
television signal into a first intermediate frequency
signal, which is a television intermediate frequency
signal. The intermediate frequency circuit has a second
mixer (23) that converts the first intermediate frequency
signal into a second intermediate frequency signal. The
intermediate frequency circuit is provided with an
adjacent-band attenuation device (21) at a stage before the
second mixer. The adjacent-band attenuation device
attenuates the band levels of channels located adjacent to
the first intermediate frequency signal by 60 dB or greater
relative to the band level of the first intermediate
frequency signal. As a consequence, upon receiving digital
television signals, interference from analog television
signals is eliminated, and the generation of distortion is
suppressed even in a wide gain control range.

Digital television signal receiving tuner system

An oscillator with a dielectric resonator capable of providing a designated output and being suited for mass production comprising an insulating substrate, a strip structure, a dielectric resonator located adjacent to the strip structure, the last two being mounted on the substrate, and an oscillatory transistor connected to one end of the strip structure. The strip structure consists of two spaced strip sections interconnected by an electrically-conductive bridge-shaped connector section having a conductor part, which is located further away from the insulating substrate and closer to the dielectric resonator than the two strip sections.

Oscillator having improved coupling between stripline and dielectric resonator

A waveguide-to-coaxial converter has a dielectric element attached to a ridge provided inside a waveguide. A coaxial line for a converted wave output which is secured to an output side of the ridge is DC insulated by the dielectric element from the waveguide.

Waveguide-to-coaxial converter

Described herein is a digital television signal receiving tuner capable of simplifying
the mounting and placement thereof onto a motherboard and preventing interference with
the tuner by harmonic signals included in clock signals sent from a clock circuit. The digital television signal receiving tuner comprises a signal receiver (2) for
frequency-converting a television signal to a first intermediate frequency signal
corresponding to a television intermediate frequency circuit (3) for frequency-converting
the first intermediate frequency signal output from the signal receiver to a second
intermediate frequency signal lower in frequency than the first intermediate frequency signal
and an analog/digital converter circuit (4) for converting the second intermediate
frequency signal output from the intermediate frequency circuit to a digital signal, and
wherein a clock circuit (5) for generating a clock signal for sampling the second
intermediate frequency signal by the analog/digital converter circuit is incorporated in the
tuner.

Akio Tadachi

Papers

Power line communication modem capable of simultaneously supplying power and exchanging data

Digital television signal receiving tuner system

Oscillator having improved coupling between stripline and dielectric resonator

Waveguide-to-coaxial converter

Tuner for receiving digital television signals