Abstract: A method for retiming digital telecommunications data received by a digital logger from a plurality of T-carrier type telephone lines respectively having differing clock sources ensures efficient transmission of received digital audio data to a host computer via a Universal Serial Bus (“USB”) interface. Also the digital logger includes volatile memory for temporarily storing digital audio data received from the plurality of T-carrier type telephone lines for: 1. ensuring that the host computer receives digital audio data correctly via the USB interface; 2. buffering the digital audio data within the digital logger during interruptions in transmission of digital audio data from the digital logger via the USB interface; and 3. reducing audible latency of speech communications.

Abstract: A method for retiming digital telecommunications data received by a digital logger from a plurality of T-carrier type telephone lines respectively having differing clock sources ensures efficient transmission of received digital audio data to a host computer via a Universal Serial Bus (“USB”) interface. Also the digital logger includes volatile memory for temporarily storing digital audio data received from the plurality of T-carrier type telephone lines for: 1. ensuring that the host computer receives digital audio data correctly via the USB interface; 2. buffering the digital audio data within the digital logger during interruptions in transmission of digital audio data from the digital logger via the USB interface; and 3. reducing audible latency of speech communications.

Abstract: A midspan power over Ethernet (“PoE”) injector (20) connects via LAN cables (514) to remote PDs (518). Each cable (514) has a remote end; and a midspan end (516). The cables (514) includes receiving and transmitting conductors, and insulated electrical conductors. The injector (20) includes pairs of sockets (24) a first socket (24) of each pair is a powered socket, and a second socket (24) is unpowered and carries only data. A data-signal bus (188) interconnects the unpowered and powered sockets. Power switches (156), equal in number to the socket pairs, connect respectively to one of the powered sockets (24). Without negotiating with a PD (518) connected by the cable (514) to the powered socket (24), a controller (34) causes switches (156) to close thereby transmitting electrical power via the powered socket (24) connected thereto and the cable (514) mated therewith to the PD (518). The controller (34) also concurrently monitors operational status: a. of each connected PD (518); and b.

Abstract: A method for retiming digital telecommunications data received by a digital logger from a plurality of T-carrier type telephone lines respectively having differing clock sources ensures efficient transmission of received digital audio data to a host computer via a Universal Serial Bus (“USB”) interface. Also the digital logger includes volatile memory for temporarily storing digital audio data received from the plurality of T-carrier type telephone lines for: 1. ensuring that the host computer receives digital audio data correctly via the USB interface; 2. buffering the digital audio data within the digital logger during interruptions in transmission of digital audio data from the digital logger via the USB interface; and 3. reducing audible latency of speech communications.

Abstract: A method for retiming digital telecommunications data received by a digital logger from a plurality of T-carrier type telephone lines respectively having differing clock sources ensures efficient transmission of received digital audio data to a host computer via a Universal Serial Bus (“USB”) interface. Also the digital logger includes volatile memory for temporarily storing digital audio data received from the plurality of T-carrier type telephone lines for: 1. ensuring that the host computer receives digital audio data correctly via the USB interface; 2. buffering the digital audio data within the digital logger during interruptions in transmission of digital audio data from the digital logger via the USB interface; and 3. reducing audible latency of speech communications.

Abstract: A midspan power over Ethernet (“PoE”) injector (20) connects via LAN cables (514) to remote PDs (518). Each cable (514) has a remote end; and a midspan end (516). The cables (514) includes receiving and transmitting conductors, and insulated electrical conductors. The injector (20) includes pairs of sockets (24) a first socket (24) of each pair is a powered socket, and a second socket (24) is unpowered and carries only data. A data-signal bus (188) interconnects the unpowered and powered sockets. Power switches (156), equal in number to the socket pairs, connect respectively to one of the powered sockets (24). Without negotiating with a PD (518) connected by the cable (514) to the powered socket (24), a controller (34) causes switches (156) to close thereby transmitting electrical power via the powered socket (24) connected thereto and the cable (514) mated therewith to the PD (518). The controller (34) also concurrently monitors operational status: a. of each connected PD (518); and b.

Abstract: An appliance's control and sensing circuit selectively applies AC electrical power to a load (72). The circuit includes a relay (44) having contacts (52) connected in series between an AC power source and the load (72). When energized, the relay's electromagnetic coil (54) changes the contacts (52) to supplying electrical power to the load (72) or conversely. The control and sensing circuit measures AC voltage induced in the coil (54) by an alternating magnetic field produced by AC electrical current supplied to the load (72) through the relay's contacts (52). A microcontroller (46) included in the control and sensing circuit: 1. measures the AC voltage produced by the coil (54); 2. compensates the measured voltage for inductive coupling between the AC current flowing through the contacts (52) and the coil (54); and 3. determines various characteristics of the AC power supplied to the load (72).

Abstract: An appliance's control and sensing circuit selectively applies AC electrical power to a load (72). The circuit includes a relay (44) having contacts (52) connected in series between an AC power source and the load (72). When energized, the relay's electromagnetic coil (54) changes the contacts (52) to supplying electrical power to the load (72) or conversely. The control and sensing circuit measures AC voltage induced in the coil (54) by an alternating magnetic field produced by AC electrical current supplied to the load (72) through the relay's contacts (52). A microcontroller (46) included in the control and sensing circuit: 1. measures the AC voltage produced by the coil (54); 2. compensates the measured voltage for inductive coupling between the AC current flowing through the contacts (52) and the coil (54); and 3. determines various characteristics of the AC power supplied to the load (72).

Abstract: A digital logger system includes a multichannel interface circuit that: 1. concurrently and continuously-receives audio telecommunication signals for at least two telephone calls from a digital hybrid telephone line; and 2. continuously transmits linearly encoded digital audio data representing the received audio signals. A Universal Serial Bus (“USB”) hub of the system receives the transmitted digital data for retransmission to a USB root hub. A USB root hub of personal computer (“PC”) receives transmitted digital data, and executes PC software which continuously monitors the digital data for embedded line status and signaling information including a telephone line “going off hook.” When a telephone line goes “off hook,” the software records both: 1. an audio header that stores information about a telephone call; and 2. an audio file that stores compressed digital data for the telephone call. Jul. 2, 2009.

Abstract: A method for retiming digital telecommunications data received by a digital logger from a plurality of T-carrier type telephone lines respectively having differing clock sources ensures efficient transmission of received digital audio data to a host computer via a Universal Serial Bus (“USB”) interface. Also the digital logger includes volatile memory for temporarily storing digital audio data received from the plurality of T-carrier type telephone lines for: 1. ensuring that the host computer receives digital audio data correctly via the USB interface; 2. buffering the digital audio data within the digital logger during interruptions in transmission of digital audio data from the digital logger via the USB interface; and 3. reducing audible latency of speech communications.

Abstract: A digital logger system includes a multichannel interface circuit that: 1. concurrently and continuously-receives audio telecommunication signals for at least two telephone calls from a digital hybrid telephone line; and 2. continuously transmits linearly encoded digital audio data representing the received audio signals. A Universal Serial Bus (“USB”) hub of the system receives the transmitted digital data for retransmission to a USB root hub. A USB root hub of personal computer (“PC”) receives transmitted digital data, and executes PC software which continuously monitors the digital data for embedded line status and signaling information including a telephone line “going off hook.” When a telephone line goes “off hook,” the software records both: 1. an audio header that stores information about a telephone call; and 2. an audio file that stores compressed digital data for the telephone call. Jul.

Abstract: A digital logger system includes a multichannel interface circuit that: 1. concurrently and continuously receives audio telecommunication signals for at least two telephone calls; and 2. continuously transmits linearly encoded digital audio data representing the received audio signals. A Universal Serial Bus (“USB”) hub of the system receives the transmitted digital data for retransmission to a USB root hub. A USB root hub of personal computer (“PC”) receives transmitted digital data, and executes PC software which continuously monitors the digital data for embedded line status and signaling information including a telephone line “going off hook.” When a telephone line goes “off hook,” the software records both: 1. an audio header that stores information about a telephone call; and 2. an audio file that stores compressed digital data for the telephone call.

Abstract: A digital logger system includes a multichannel interface circuit adapted: 1. for concurrently and continuously receiving audio telecommunication signals for at least two telephone calls; and 2. for continuously transmitting digital audio data extracted from the received audio telecommunication signals. A Universal Serial Bus (“USB”) hub of the digital logger system: 1. receives the continuously transmitted digital audio data; and 2. and transmits it to a USB root hub. A USB root hub of personal computer (“PC”) receives the transmitted digital audio data, and executes PC software which continuously monitors the digital audio data for decoding line status and signaling information embedded therein to determine status of a telephone line including a telephone line “going off hook.” When a telephone line goes “off hook,” the PC software records both: 1. an audio header that stores information about a telephone call; and 2. an audio file that stores compressed digital audio data for the telephone call.

Abstract: A multiple-media duplicating system concurrently copies digital data from a master media to several copy media. The system includes a master input/output (“I/O”) port and several copy I/O ports equal in number to the number of copy media. A special I/O port, coupled in parallel to each of the copy I/O ports, effects a concurrent transfer of digital data from the master media to all of the copy media. The system may further include a circuit which effects copying of data from the master media to the copy media while concurrently preventing conventional direct access to devices that contain the media. A particularly preferred embodiment further includes an adjustable, variable-frequency generator that is coupled to the digital logic circuit, and supplies a clock signal to the digital logic circuit which determines a rate at which digital data is copied from the master media in parallel to the copy media.

Abstract: A pre-mastering, optical recorder and a logging workstation both receive and condition an analog signal. Both the recorder and the workstation then digitize the conditioned signal storing the digitized data thus obtained in a buffer, preferably either a large RAM or a hard disk. When the digitized data occupies more than a pre-established fraction of the buffer, both the recorder and the workstation further compress the data to recover buffer space thereby permitting recording to continue. The recorder also pre-masters the data for recording onto optical-recording media using an optical-disk recorder included in the recorder. Instead of an optical-disk recorder, the workstation includes a network interface circuit that interfaces the workstation with a network thereby permitting the logger to transmit data via the network for recording either to a pre-mastering, optical recorder, or to a digital logger recorder.

Abstract: An enhanced-performance floppy diskette subsystem, which operates many times faster than a conventional floppy diskette subsystem, includes both an enhanced-performance floppy diskette drive and floppy diskette drive controller. The diskette drive rotates a floppy diskette two or more times faster than that of a conventional floppy diskette drive, and includes two separate and independent read/write ("R/W") channels. To provide enhanced-performance, the floppy diskette drive controller includes a DRAM cache that maintains an image of the data recorded on a floppy diskette present in the floppy diskette drive. Two separate and independent floppy disk drive controller channels respectively interface between the cache memory and the R/W channels included in the enhanced-performance floppy diskette drive.

Abstract: A host adapter, having at least two connectors which both belong to a single digital computer bus, includes a first terminator that is coupled to a first portion of the digital computer bus, and a second terminator that is coupled to a second, separate portion of the bus. Upon being enabled by a control signal, these terminators respectively terminate the first and second portions of the bus. The host adapter also includes termination control logic coupled to the first and second terminators, and to connectors for the bus. The termination control logic receives connection signals from the connectors which indicate connection or non-connection of a device to the first portion, or to the combined first and second portions of the bus. The termination control logic processes these connection sensing signals and transmits two independent control signals which appropriately enable or disable the first and second terminators.