Abstract: An RF digitization and collection system (RFDCS) and methods for implementing the RF digitization and collection system to manage an application storage and retrieval space (App Space), wherein the App Space includes apps that may perform various offline and/or real-time transforms of RF signals received, stored, or played back on the RFDCS. Also, in the various embodiments, the RFDCS may govern the system resources available to these apps while ensuring that the RFDCS's core system functions are not impacted by the execution of one or more of these apps in the App Space. Thus, the RFDCS may enable users to utilize real-time signal processing by running various specialized apps without compromising the RFDCS's core system function, thereby promoting dynamic “on-the-fly” transformation of raw RF signals without compromising the user's overall experience.

Abstract: An RF digitization and collection system (RFDCS) and methods for implementing the RF digitization and collection system to manage an application storage and retrieval space (App Space), wherein the App Space includes apps that may perform various offline and/or real-time transforms of RF signals received, stored, or played back on the RFDCS. Also, in the various embodiments, the RFDCS may govern the system resources available to these apps while ensuring that the RFDCS's core system functions are not impacted by the execution of one or more of these apps in the App Space. Thus, the RFDCS may enable users to utilize real-time signal processing by running various specialized apps without compromising the RFDCS's core system function, thereby promoting dynamic “on-the-fly” transformation of raw RF signals without compromising the user's overall experience.

Abstract: Methods and systems for emulating an interference environment include combining a plurality of emulated interfering signals and transmitting the plurality of emulated interfering signals using at least one transmitter. The methods and systems may further include receiving a selection of a frequency region, where the plurality of emulated interference signals are transmitted in all or part of the selected frequency region. The selected frequency region may be at least partially within an Industrial, Scientific and Medical (ISM) radio band. The plurality of emulated interfering signals may be transmitted to at least one device to test the interference immunity of the at least one device.

Abstract: A radiofrequency transceiver device includes at least one reconfigurable integrated circuit (RIC) and a system controller that is able to reconfigure the at least one RIC to perform specific processing tasks. The specific processing tasks may be related to processing at least one radiofrequency signal that is received by, stored on, retrieved from and/or transmitted by the radiofrequency transceiver device. Embodiments may also include one or more reconfigurable integrated circuit applications (RIC Apps) that may be executed, at least in part, on the at least one RIC.

Abstract: An RF digitization and collection system (RFDCS) and methods for implementing the RF digitization and collection system to manage an application storage and retrieval space (App Space), wherein the App Space includes apps that may perform various offline and/or real-time transforms of RF signals received, stored, or played back on the RFDCS. Also, in the various embodiments, the RFDCS may govern the system resources available to these apps while ensuring that the RFDCS's core system functions are not impacted by the execution of one or more of these apps in the App Space. Thus, the RFDCS may enable users to utilize real-time signal processing by running various specialized apps without compromising the RFDCS's core system function, thereby promoting dynamic “on-the-fly” transformation of raw RF signals without compromising the user's overall experience.

Abstract: A multi-carrier signal is typically comprised of many equidistant sub-carriers. This results in periodicity of spectrum within the bandwidth of such a multi-carrier signal. An unknown multi-carrier signal with equidistant sub-carriers can thus be sensed together with its sub-carrier spacing by finding a discernable local maximum in the cepstrum (Fourier transform of the log spectrum) of the multi-carrier signal.

Abstract: A multi-carrier signal is typically comprised of many equidistant sub-carriers. This results in periodicity of spectrum within the bandwidth of such a multi-carrier signal. An unknown multi-carrier signal with equidistant sub-carriers can thus be sensed together with its sub-carrier spacing by finding a discernible local maximum in the cepstrum (Fourier transform of the log spectrum) of the multi-carrier signal.

Abstract: An RF digitization and collection system (RFDCS) and methods for implementing the RF digitization and collection system to manage an application storage and retrieval space (App Space), wherein the App Space includes apps that may perform various offline and/or real-time transforms of RF signals received, stored, or played back on the RFDCS. Also, in the various embodiments, the RFDCS may govern the system resources available to these apps while ensuring that the RFDCS's core system functions are not impacted by the execution of one or more of these apps in the App Space. Thus, the RFDCS may enable users to utilize real-time signal processing by running various specialized apps without compromising the RFDCS's core system function, thereby promoting dynamic “on-the-fly” transformation of raw RF signals without compromising the user's overall experience.

Abstract: An RF digitization and collection system (RFDCS) and methods for implementing the RF digitization and collection system to manage an application storage and retrieval space (App Space), wherein the App Space includes apps that may perform various offline and/or real-time transforms of RF signals received, stored, or played back on the RFDCS. Also, in the various embodiments, the RFDCS may govern the system resources available to these apps while ensuring that the RFDCS's core system functions are not impacted by the execution of one or more of these apps in the App Space. Thus, the RFDCS may enable users to utilize real-time signal processing by running various specialized apps without compromising the RFDCS's core system function, thereby promoting dynamic “on-the-fly” transformation of raw RF signals without compromising the user's overall experience.

Abstract: An RF digitization and collection system (RFDCS) and methods for implementing the RF digitization and collection system to manage an application storage and retrieval space (App Space), wherein the App Space includes apps that may perform various offline and/or real-time transforms of RF signals received, stored, or played back on the RFDCS. Also, in the various embodiments, the RFDCS may govern the system resources available to these apps while ensuring that the RFDCS's core system functions are not impacted by the execution of one or more of these apps in the App Space. Thus, the RFDCS may enable users to utilize real-time signal processing by running various specialized apps without compromising the RFDCS's core system function, thereby promoting dynamic “on-the-fly” transformation of raw RF signals without compromising the user's overall experience.

Abstract: A system and method for receiving storing, manipulating and distributing RF data. A computing device receives and stores collected RF data. A requesting user issues a request for the RF data file, which request includes one or more modification parameters. The computing device selects one or more processing algorithms based on the one or more modification parameters and applies the selected processing algorithms to the collected RF data. The computing device provides the manipulated RF data to the requesting party in response to the request.

Abstract: A multi carrier signal is typically comprised of many equidistant sub-carriers. This results in periodicity of spectrum within the bandwidth of such a multi-carrier signal. An unknown multi-carrier signal with equidistant sub-carriers can thus be sensed together with its sub-carrier spacing by finding a discernable local maximum in the cepstrum (Fourier transform of the log spectrum) of the multi-carrier signal.

Abstract: A multi-carrier signal is typically comprised of many equidistant sub-carriers. This results in periodicity of spectrum within the bandwidth of such a multi-carrier signal. An unknown multi-carrier signal with equidistant sub-carriers can thus be sensed together with its sub-carrier spacing by finding a discernible local maximum in the cepstrum (Fourier transform of the log spectrum) of the multi-carrier signal.

Abstract: The present invention provides a noise barrier apparatus for inhibiting external noise from causing the presence of noise in an audio chamber defined by a noise barrier device and including the user's ear canal. The noise barrier apparatus may be constituted by an in-ear noise barrier device or devices or an over-the-ear device or devices. An in-ear application of the present invention provides an in-ear-canal audio receiver comprising an in-ear-canal adapter body having a tapered ear plug portion that is inserted into the user's ear canal. The adapter body further has an opening in the plug portion, an exterior annular indent, and an inner chamber coupled to the opening of the plug portion. The inner chamber of the in-ear-canal adapter body holds a transducer assembly comprising a transducer housing and a transducer or speaker. The transducer is positioned in a passage extending through the transducer housing. A torus-shaped cushion is positioned in the annular indent of the in-ear-canal adapter body.

Abstract: A chest piece for a stethoscope has a housing with a cavity. The cavity has a cavity surface which is paraboloid in shape, having an apex, an axis, and a focal point. The cavity terminates at the apex and an opening, and the focal point resides in the cavity. A transducer is positioned at the focal point. The parabolic shape of the cavity surface acts to reflect sound waves transmitted normal to the opening to the transducer, while reflecting other sound waves. A mechanical wave guide with a series of parallel passages preferably extends across the opening. Preferably, a membrane with a convex surface covers the opening. The cavity is preferably filled with a liquid or gel having physical characteristics similar to human flesh. To reduce noise from motion of the chest piece across the skin, the stethoscope can be activated by a pressure switch responsive to fluid pressure inside the cavity.

Abstract: The present invention provides an audio seal for use in an ear cup assembly. The audio seal has a generally torus-shaped body made from a compressible material. The torus-shaped body has a generally elliptical, torus configuration over approximately two-thirds to three-quarters of its perimeter and has a head and neck pad section that covers approximately one-quarter to one-third of said body's perimeter. The head and neck pad section protrudes forwardly and radially outward to form a bulging section that deviates the said elliptical, torus configuration.

Abstract: The present invention provides an in-ear-canal audio receiver (42) comprising an in-ear-canal adapter body (96) having a tapered ear plug portion (98) that is inserted into the user's ear canal. The adapter body (96) further has an opening (104) in the plug portion, an exterior annular indent (128), and an inner chamber (92) coupled to the opening of the plug portion. The inner chamber of the in-ear-canal adapter body holds a transducer assembly (92) comprising a transducer housing (54) and a transducer or speaker (56). The transducer (56) is positioned in a passage extending through the transducer housing. A torus-shaped cushion (106) is positioned in the annular indent of the in-ear-canal adapter body (96). The cushion provides comfort and establishes a good seal with the user's ear.

Abstract: A disposable patient-to-transducer interface device for use in securely holding a transducer such as a stethoscope head positioned against the skin surface of a patient. The interface device may be adhered to the patient's skin surface and the stethoscope head securely received in an opening provided in the device. When in use, the interface device substantially surrounds the stethoscope head thereby providing a passive barrier to ambient noise. The interface device also develops a relatively good air seal around the stethoscope head and thus provides an additional barrier to ambient noise. Furthermore, the interface device prevents substantial movement of the transducer head and, thereby, minimizes the amount of surface motion noise generated and detected by the transducer head. In addition, when the interface device is attached to the skin surface of the patient, it establishes a good reference point whereby continual or periodic monitoring of a particular location on the patient may be accomplished.

Abstract: A modular auscultation sensor and telemetry system ("MASTS") for sensing body sounds of a patient in a noisy environment where both desired body sounds and undesirable noise may be detected. The MASTS includes a transducer head that comprises two sensors that are substantially acoustically and mechanically isolated from each other. The first sensor is positioned to sense body sounds of a patient when the transducer head is placed against a patient's skin, and the second sensor is positioned to sense primarily noise, if any. The sound signals are transmitted to a digital signal processor carried in a waist-pack or similar container. The digital signal processor processes the sound signals using an adaptive filter scheme to produce an output signal that is indicative of primarily of the body sounds emanating from the patient.

Abstract: A cable and connector system comprises a cable having a plurality of conductors for carrying electric current. The conductors are surrounded by a plurality of aramid fiber tension members that carry tensile loads that are applied to the cable. The conductors and tension members are wrapped with an aramid fiber armor tape. The armor tape protects the bundle from crushing loads and penetration by sharp objects. A connector is provided at each end of the cable whereby the tension members of the cable may be fixedly attached to the connector such that the tensile loads carried by the tension members are directly transmitted to the connector and are not transmitted to the conductors.