摘要:
An adapter for mounting electrical outlet faceplates designed for mounting on rectangular junction boxes in hollow walls onto solid walls with cylindrical cavities and sleeves. Junction box mounting is popular in North America, whereas cavity mounting is popular in Europe and the Middle East. Such an adapter provides universal mounting for specialized faceplates which are designed and intended for junction box mounting. The adapter features clamps for gripping the inner surface of a wall cavity or sleeve and a rectangular plate for mounting an faceplate designed for junction box mounting. The rectangular plate has mounting points with a nominal center-to-center distance of 3à inches, corresponding to the requirements of junction box mounting.
摘要:
Coverage for a wireless network is improved using a frequency shifting scheme. A wireless signal in a frequency band is shifted to another band, and carried in the shifted band to another location where the signal is shifted back to the original frequency band. The frequency shifting may utilize frequency shifting schemes such as mixer/filter and heterodyne. The wireless signal can be frequency shifted by converting it to other representing signals (such as I/Q components) and forming the frequency-shifted signal from the representations. The transmission medium may use dedicated wiring or existing service wiring in a residence or building, including LAN, telephone, AC power and CATV wiring. The system may be enclosed as a stand-alone unit, housed in integrated form as part of a service outlet or as a snap-on/plug-in module.
摘要:
A system and method for measuring a characteristic impedance of a transmission-line comprises transmitting energy to the line, and shortly after measuring the voltage/current involved and thus measuring the equivalent impedance. The measured characteristic impedance may then be used in order to determine the termination value required to minimize reflections. In another embodiment, the proper termination is set or measured by adjusting the termination value to achieve maximum power dissipation in the terminating device. The equivalent characteristic impedance measurement may be used to count the number of metallic conductors connected to a single connection point. This abstract is not intended to limit or construe the scope of the claims.
摘要:
Apparatus for coupling a signal between a wiring and a device. Junction box mounting is popular in North America, whereas cavity mounting is popular in Europe and the Middle East. The apparatus includes an adapter and provides universal mounting for specialized faceplates which are designed and intended for junction box mounting. The adapter features clamps for gripping the inner surface of a wall cavity or sleeve and a plate for mounting an faceplate designed for junction box mounting. The plate has mounting points with a nominal center-to-center distance of 3¼ inches, corresponding to the requirements of junction box mounting.
摘要:
Apparatus for coupling a signal between a wiring and a device. Junction box mounting is popular in North America, whereas cavity mounting is popular in Europe and the Middle East. The apparatus includes an adapter and provides universal mounting for specialized faceplates which are designed and intended for junction box mounting. The adapter features clamps for gripping the inner surface of a wall cavity or sleeve and a plate for mounting an faceplate designed for junction box mounting. The plate has mounting points with a nominal center-to-center distance of 3¼ inches, corresponding to the requirements of junction box mounting.
摘要:
An adapter for mounting electrical outlet faceplates designed for mounting on rectangular junction boxes in hollow walls onto solid walls with cylindrical cavities and sleeves. Junction box mounting is popular in North America, whereas cavity mounting is popular in Europe and the Middle East. Such an adapter provides universal mounting for specialized faceplates which are designed and intended for junction box mounting. The adapter features clamps for gripping the inner surface of a wall cavity or sleeve and a rectangular plate for mounting an faceplate designed for junction box mounting. The rectangular plate has mounting points with a nominal center-to-center distance of 3¼ inches, corresponding to the requirements of junction box mounting.
摘要:
An adapter for mounting electrical outlet faceplates designed for mounting on rectangular junction boxes in hollow walls onto solid walls with cylindrical cavities and sleeves. Junction box mounting is popular in North America, whereas cavity mounting is popular in Europe and the Middle East. Such an adapter provides universal mounting for specialized faceplates which are designed and intended for junction box mounting. The adapter features clamps for gripping the inner surface of a wall cavity or sleeve and a rectangular plate for mounting an faceplate designed for junction box mounting. The rectangular plate has mounting points with a nominal center-to-center distance of 3¼ inches, corresponding to the requirements of junction box mounting.
摘要:
A system for providing DC power on local telephone lines, such as telephone lines in a building or office, for powering devices and circuitry associated with communications over those telephone lines, as well as other functions. Desired voltage and power levels are supplied over local telephone lines by separating the DC power component from the central office or private branch exchange with a DC blocking filter while passing all AC telephony signals. A distinct DC power is then imposed over the telephone line for powering both the telephony service as well as other loads. Conventional telephone off-hook detection is simulated for compatibility with the central office or private branch exchange. The functions required may be integrated, partially or fully within a telephone outlet.
摘要:
An adapter for mounting electrical outlet faceplates designed for mounting on rectangular junction boxes in hollow walls onto solid walls with cylindrical cavities and sleeves. Junction box mounting is popular in North America, whereas cavity mounting is popular in Europe and the Middle East. Such an adapter provides universal mounting for specialized faceplates which are designed and intended for junction box mounting. The adapter features clamps for gripping the inner surface of a wall cavity or sleeve and a rectangular plate for mounting an faceplate designed for junction box mounting. The rectangular plate has mounting points with a nominal center-to-center distance of 3à inches, corresponding to the requirements of junction box mounting.
摘要:
Coverage for a wireless network is improved using a frequency shifting scheme. A wireless signal in a frequency band is shifted to another band, and carried in the shifted band to another location where the signal is shifted back to the original frequency band. The frequency shifting may utilize frequency shifting schemes such as mixer/filter and heterodyne. The wireless signal can be frequency shifted by converting it to other representing signals (such as I/Q components) and forming the frequency-shifted signal from the representations. The transmission medium may use dedicated wiring or existing service wiring in a residence or building, including LAN, telephone, AC power and CATV wiring. The system may be enclosed as a stand-alone unit, housed in integrated form as part of a service outlet or as a snap-on/plug-in module.