Abstract: Methods and apparatus are described which enable flexible and secure processing of digital bearer instruments. An architecture is provided that enables provision of an extensible applications framework that flexibly supports a variety of features and functionality supporting title-based rights processing operations. A wide range of methods of defining and assuring rights processing operating environments extend the capabilities of rights processing operating environments in a variety of ways.

Abstract: Methods and apparatus are described which enable flexible and secure processing of digital bearer instruments. An architecture is provided that enables provision of an extensible applications framework that flexibly supports a variety of features and functionality supporting title-based rights processing operations. A wide range of methods of defining and assuring rights processing operating environments extend the capabilities of rights processing operating environments in a variety of ways.

Abstract: Methods and apparatus are described which enable flexible and secure processing of digital bearer instruments. An architecture is provided that enables provision of an extensible applications framework that flexibly supports a variety of features and functionality supporting title-based rights processing operations. A wide range of methods of defining and assuring rights processing operating environments extend the capabilities of rights processing operating environments in a variety of ways.

Abstract: An emergency position information radio beacon utilized in conjunction with a global positioning system that receives latitude and longitude information continuously in which the GPS data is periodically transferred into the EPIRB before activation in order to preserve battery power in the EPIRB. The EPIRB includes a first micro controller that is connected by an electro/optical data input to the GPS with the first micro controller being a very low power drain. Periodically, such as every 10 minutes, latitude and longitude information is transferred from the GPS into the EPIRB memory after which the EPIRB memory and system is maintained in a sleep mode with no power consumption. This insures that the EPIRB has geographical position information data before activation that can be transmitted with the emergency signal to search and rescue at the same time preserving the battery power of the EPIRB which is utilized only during the emergency period. The system is power off 99.

Abstract: A portable emergency position indicating radio beacon (EPIRB) that transmits two signals at different frequencies whereby one frequency is twice the frequency of the other and wherein the beacon incorporates a push-push frequency multiplier to multiply the generated signal and to cancel odd and higher order even harmonics in the multiplied signal so as to improve efficiency, decrease power dissipation, improve the circuit quality factor, and decrease wave distortion. The improved frequency doubling circuitry allows for an EPIRB of reduced housing volumetric size and reduced battery size without reducing signal output power.

Abstract: An oscillator including an active gain device and feedback between the output of the the device and its input for sustaining oscillations that incorporates a power splitter between the output of the device, the output of the oscillator and a feedback path for isolating the feedback path from the output of the oscillator for improving power and frequency pushing.

Abstract: A dielectric resonator stabilized oscillator structure and method for adjusting the oscillating characteristics of the oscillator which includes mounting the dielectric resonator to a cover housing member which can be positionally varied to move the resonator in a plane parallel to a semiconductor device and transmission line circuitry comprising the oscillator. The semiconductor device and transmission line circuitry are disposed within a bottom housing assembly to which the cover housing member is fixedly mounted to after adjustment and optimizing of the oscillator characteristics is conducted. The cover member includes openings therethrough which are oversized with respect to corresponding threaded openings in the bottom housing assembly thereby allowing the adjustment of the dielectric resonator by moving the cover member while screws are threaded through the openings thereof into the bottom assembly and also fixedly mounting of the cover member to the bottom assembly.

Abstract: A microwave oscillator/amplifier includes a plurality of TEM transmission lines each with a negative resistance device at one end and a lossy, matched termination at the other end. A resonant cavity is coupled to each TEM line so as to induce a parallel resonance on the lines at the region of coupling. Structural means are provided for maintaining the characteristic impedance of the TEM lines uniform along the length of said lines. Fabrication of a device in which the TEM line characteristic impedance was uniformly maintained along the line length at five times the optimum negative resistance of said negative resistance device is noted. Suggested levels of characteristic impedance are relatively low compared to prior art devices, none of which are known to attempt maintenance of characteristic impedance uniform along the length of the TEM transmission line.