54 results about "3-Way" patented technology

Disclosed herein is a three-way call detection system and method for detecting the addition of a third party to a pre-existing telephonic connection between a first party and a second party. The system comprises a meter for measuring the amplitude of a line voltage of a telephonic connection between a first party and a second party.

A vehicle-mounted device for an automatic charge receipt system capable of being designed, manufactured and installed while an encrypting / decrypting algorithm and / or encrypting / decrypting keys remain hidden. Included is an arrangement for discrimination (i.e., identification) of a vehicle-mounted device or user each time a utilization charge is determined / settled, wherein an initial portion of communications concerning discrimination is conducted without encrypting / decrypting, and remaining portions of communications are conducted with encrypting / decrypting so as to protect an integrity and security of the automatic charge receipt system. Confindential components / information, e.g., the encrypting / decrypting algorithm and / or keys, and components directly handling such information are arranged within a tamper- / access-resistant unit (preferably as a sealed integrated circuit package) in the vehicle-mounted device. Since an encryptor and a decryptor directly read the encrypting / decrypting key without such key being detectable outside of the sealed unit, it is not necessary for components outside the sealed unit to receive and / or handle the aforesaid encrypting / decrypting key or their contents. Accordingly such key remains hidden (i.e., inaccessable) within the sealed unit. The arrangement can further include an authentication protocol such as a 3-way authentication protocol, a 2-wayx2 authentication protocol and a Fiat-Shimir authentication protocol.

The invention relates to the modularity of a reversible symmetrical single-pillar vertical support assembly (the Tower) which is the major structural component for a drum beating pedal apparatus (drum pedal). Said drum pedal can also be used to beat, without limitation, other musical instruments and musical accessories. Upon this Tower can be constructed various single-beater, multiple-beater and remote drum pedals and drum beating mechanisms according to the operator's requirements. This modular single-Tower drum pedal system also comprises several ancillary inventions which also can be applied in concert with or independently of the said Modular Single-Tower Drum Pedal System. These ancillary inventions relate specifically to drum pedal elements that directly affect and control the adjustability of footboard length; chain and / or strap length; single and multiple drum beaters in all axial positions including side-to-side, up-and-down, and fore-and-aft directions; beater stroke arc length and beater velocity; independent multiple beater adjustability; reduced friction spring-rocker floating-bearing support assembly; adjustability of the eccentricity of the cam hub; and a hexagon-shape drum beater shaft for secure 3-way position of drum beater head.

The likelihood that a called party to a telephone call has forwarded the call to another party, or has conferenced the call to include another party is estimated by requiring that the called party supply a first signal, illustratively a first DTMF signal, later requiring that the called party provide a second signal, illustratively the same DTMF signal provided by the first signal, and comparing characteristics of said first and second signals as received at a telephone network node.

The invention discloses an offset printing fountain solution self-circulation purification system and method. The system comprises a first water tank, a second water tank, a layered deposition filter, a filter, a third water tank and a control circuit. When through the control circuit, it is found that particle solubility of a fountain solution in the first water tank is less than a preset value, the control circuit controls a 3-way shift switch so that the fountain solution flows into a first chamber, when through the control circuit, it is found that particle solubility of the fountain solution in the first water tank is greater than the preset value, the control circuit controls the 3-way shift switch so that the fountain solution goes through the layered deposition filter, flows into the first chamber, then enters a self-circulation filter system and is subjected to cyclic purification, the control circuit receives signals of a thermometer, a pH detector and a conductivity detector, and when the pH and the conductivity are higher than a corresponding pH threshold and a conductivity threshold, alcohol and water are added into the primary fountain solution according to a certain ratio. The system and method have high fountain solution purification efficiency, realize real-time accurate detection of indexes of the fountain solution, make the fountain solution quality stable and guarantee printing quality.

A summing circuit for an adder decodes control signals to determine that the result should be manipulated, and generates a half-sum output which is used to produce a manipulated result based on the control signals. The half-sum output is combined with a previous carry bit to complete the sum operation. The control signals can invert the adder result, or force the result to be all 1's. These functions can be effectuated in a 3-way multiplexer that combines the operand inputs and control signals. For inversion, two separate logic circuits produce true and complement half-sums in parallel, and the appropriate half-sum is selected for the half-sum output. For a result of all 1's, a force—1 control signal pulls the half-sum output node to electrical ground and the final output is manipulated by gating the carry signals with the force—1 signal. The two functions are implemented without introducing additional delay.

A method and an apparatus are provided for preventing coagulation in an exhaust pipe of a boiler is provided. The method includes operating the boiler and executing a combustion stroke, determining if an ambient air temperature measured by an ambient air temperature detecting sensor is equal to or lower than a first temperature, shifting a 3-way valve to a hot-water location if the measured ambient air temperature is equal to or lower than the first temperature, executing an extinction stroke of a burner if the temperature of space heating water reaches a second temperature, and operating a circulation pump and a blower to exchange heat in a heat exchanger and to discharge warm air through an exhaust pipe, thereby preventing coagulation in the exhaust pipe of the boiler.

A thermal management system is provided which may be miniaturized and may have a reduced weight by integrating thermal management parts in a fuel cell vehicle. In particular, a new type of thermal management system integrated housing in which a housing of a pump housing part, a housing of a 3-way valve fluid part, and a bypass channel among parts of the thermal management system for a fuel cell vehicle are integrated into a single structure to reduce the size of the overall system.

Embodiments of a bidirectional 3-way optical splitter are described. This bidirectional 3-way optical splitter includes an optical splitter having: a first external node, a second external node, a third external node, and a fourth external node. In one mode of operation, the optical splitter may be configured to receive an external input optical signal on the first external node and to provide external output optical signals on the other external nodes. Moreover, in another mode of operation, the optical splitter may be configured to receive the external input optical signal on the third external node and to provide the external output optical signals on the other external nodes.

A 3-way stopcock for medical use is described and includes a body or nucleus (1) wherein a principal arm (2) and two secondary arms (3, 3′) converge and a plug or stopper (4) acting inside the body or nucleus (1). According to the invention, the two secondary arms (3, 3′) present initial curved flexible segments (3a, 3′a) having a high elastic index, which respectively extend into parallel final distal segments (3b, 3′b).

An improved method and system for determining round-trip time (RTT) during a radio link protocol (RLP) wireless communication link. The RTT estimate is negotiated by both sides of the RLP communication link without the need for the 3-way handshake generally required for RLP synchronization. The method includes techniques used by both sides of the RLP communication link to dynamically update and refine their initial, negotiated RTT estimates.