Abstract: A spectroscopy method in which a sample is scanned without moving the sample. Light from the sample 16 is collected by a lens 14 and analyzed at a spectrum analyzer 28 before being focused onto a photodetector 32. Light from the focal point of the lens 14 is brought to a tight focus on the photodetector 32 whilst light from in front of or behind the focal point comes to a more diffuse focus. Light from the pixels on the photodetector 32 corresponding to the focal point of the lens 14 is processed, whilst light from pixels outside this region is ignored, thus forming a ‘virtual slit’. The sample 16 is scanned in a vertical direction by moving the ‘virtual slit’ up and down, by changing the designated rows of pixels from which data is analyzed. The sample is scanned in a horizontal direction by moving a vertical slit 24 in the light path in a horizontal direction.

Abstract: A remote device or module sends data to a base station when the change in data from the last transmission exceeds a predetermined threshold. The invention also allows for transmission at a minimal specific time interval. Additionally, the device allows for transmissions based on alarm or alerting conditions.

Abstract: An electron microscope 10 is adapted to enable spectroscopic analysis of a sample 16. A parabolic mirror 18 has a central aperture 20 through which the electron beam can pass. The mirror 18 focuses laser illumination from a transverse optical path 24 onto the sample, and collects Raman and/or other scattered light, passing it back to an optical system 30. The mirror 18 is retractable (within the vacuum of the electron microscope) by a sliding arm assembly 22.

Abstract: A remote device or module (100) sends data to a base station (260) when the change in data from the last transmission exceeds a predetermined threshold. The invention also allows for transmission at a minimal specific time interval. Additionally, the device allows for transmissions based on alarm or alerting conditions.

Abstract: A spectroscopy method in which a sample is scanned without moving the sample. Light from the sample 16 is collected by a lens 14 and analysed at a spectrum analyser 28 before being focused onto a photodetector 32. Light from the focal point of the lens 14 is brought to a tight focus on the photodetector 32 whilst light from in front of or behind the focal point comes to a more diffuse focus. Light from the pixels on the photodetector 32 corresponding to the focal point of the lens 14 is processed, whilst light from pixels outside this region is ignored, thus forming a ‘virtual slit’. The sample 16 is scanned in a vertical direction by moving the ‘virtual slit’ up and down, by changing the designated rows of pixels from which data is analysed. The sample is scanned in a horizontal direction by moving a vertical slit 24 in the light path in a horizontal direction.

Abstract: A musical string instrument (12) has a body (21) with a resonate cavity covered by a soundboard (22). A pick guard (34) has a flat surface for mounting to the soundboard of the instrument. Electronic control components (36) are mounted within a housing of the pick guard. The musician can control a preamplifier within the resonate cavity of the body with knobs (58) and push buttons (60) located on the pick guard. A thin, flat, multi-conductor ribbon cable (38) is connected to the electronic control components and routed along a surface of the soundboard and through a sound hole (24) in the soundboard into the resonate cavity of the body. The ribbon cable entering the resonating cavity through the sound hole does not adversely effect the natural response, performance, sound quality, and tonal property of the string instrument and does not require any additional holes be drilled in the soundboard.

Abstract: An input signal is applied to a notch filter having a transfer function that is the inverse of the expected noise signal. The filtered signal is coupled to a first amplifier and the input signal is coupled to a second amplifier. The outputs of the amplifiers are summed. The gains of the amplifiers are oppositely adjusted in response to the magnitude of the input signal. At low amplitude, the filtered signal is amplified more than the unfiltered signal. At high amplitude, the unfiltered signal is amplified more than the filtered signal.

Abstract: A musical string instrument (12) has a body (21) with a resonate cavity covered by a soundboard (22). A pick guard (34) has a flat surface for mounting to the soundboard of the instrument. Electronic control components (36) are mounted within a housing of the pick guard. The musician can control a preamplifier within the resonate cavity of the body with knobs (58) and push buttons (60) located on the pick guard. A thin, flat, multi-conductor ribbon cable (38) is connected to the electronic control components and routed along a surface of the soundboard and through a sound hole (24) in the soundboard into the resonate cavity of the body. The ribbon cable entering the resonating cavity through the sound hole does not adversely effect the natural response, performance, sound quality, and tonal property of the string instrument and does not require any additional holes be drilled in the soundboard.

Abstract: A remote wireless intercom and other devices for communicating with a cordless telephone system are disclosed. The remote wireless intercom includes a transmitter, a receiver, a speaker, a microphone, a battery interface, and a housing which carries these components. A method of communicating between the remote wireless intercom and a cordless telephone device involves the steps of detecting an intercom voice communication request at the remote wireless intercom; wirelessly transmitting the intercom voice communication request from the remote wireless intercom to the a cordless telephone device; and engaging the remote wireless intercom in an intercom voice communication session with the cordless telephone device after transmitting the intercom voice communication request. Preferably, the cordless telephone device is a cordless base station and the intercom voice communication session takes place between the remote wireless intercom and a cordless telephone.

Abstract: An input signal is applied to a notch filter having a transfer function that is the inverse of the expected noise signal. The filtered signal is coupled to a first amplifier and the input signal is coupled to a second amplifier. The outputs of the amplifiers are summed. The gains of the amplifiers are oppositely adjusted in response to the magnitude of the input signal. At low amplitude, the filtered signal is amplified more than the unfiltered signal. At high amplitude, the unfiltered signal is amplified more than the filtered signal.

Abstract: An electron microscope 10 is adapted to enable spectroscopic analysis of a sample 16. A parabolic mirror 18 has a central aperture 20 through which the electron beam can pass. The mirror 18 focuses laser illumination from a transverse optical path 24 onto the sample, and collects Raman and/or other scattered light, passing it back to an optical system 30. The mirror 18 is retractable (within the vacuum of the electron microscope) by a sliding arm assembly 22.

Abstract: A combination of limited data, 3D linear interpolation, and a unique simulation circuit are combined to provide a programmable tone control that can simulate any desired tone stack. In accordance with one aspect of the invention, it has been found that a reduced number of data points plus interpolation provides sufficiently accurate coefficients for simulation. The data points are obtained from measurements of the actual operation of the analog tone stacks to be simulated. A second aspect of the invention is the simulation circuit controlled by the coefficients to accurately reproduce the operation of any given tone stack. The simulation circuit uses two programmable filters and three variable gain amplifiers to simulate a tone stack. The cut-off frequency of each filter and the gain of each amplifier are determined by coefficients extracted by interpolation from stored data.

Abstract: An apparatus (5) for renovating synthetic grass playing surfaces (1) which include a layer of particulate material. The apparatus (5) comprises a plenum chamber (20) which directs a fast moving jet of air against the particulate so as to dislodge it and direct the particulate into a collection chamber (40). The plenum chamber (20) may be adapted to effect a reciprocating motion parallel to a playing surface (1) and orthogonal to a direction of conveyance of the apparatus (5) over the playing surface (1). The collection chamber (20) may incorporate a screw conveyor system (44) to displace particulate material directed into the collection chamber (20) to an appropriate container which may be conveyed along side the apparatus (5) by a separate vehicle. The apparatus (5) may further include a particulate dispensing apparatus for applying an evenly spread layer of fresh particulate material in place of that which has been dislodged and removed from the playing surface (1).

Abstract: Disclosed are call processing methods which are performed by a network terminator located at a subscriber's premises. The network terminator is coupled to a digital network and a communication device at the subscriber's premises and can perform call waiting, caller identification, call conferencing without intervention from a telco's switching system that requires an additional charge to the subscriber for these services. In addition, the network terminator can perform a method which allows two digital communication devices coupled to one S-bus to share a communication session. In another embodiment, up to a six way conference call can be established with an analog telephone coupled to an ISDN network via the network terminator of the present invention.

Abstract: Disclosed are call processing methods which are performed by a network terminator located at a subscriber's premise. The network terminator is coupled to a digital network and a communication device at the subscriber's premise and can perform call waiting, caller identification, call conferencing without intervention from a telco's switching system that requires an additional charge to the subscriber for these services. In addition, the network terminator can perform a method which allows two digital communication devices coupled to one S-bus to share a communication session. In another embodiment, up to a six way conference call can be established with an analog telephone coupled to an ISDN network via the network terminator of the present invention.

Abstract: Disclosed are call processing methods which are performed by a network terminator located at a subscriber's premise. The network terminator is coupled to a digital network and a communication device at the subscriber's premise and can perform call waiting, caller identification, call conferencing without intervention from a telco's switching system that requires an additional charge to the subscriber for these services. In addition, the network terminator can perform a method which allows two digital communication devices coupled to one S-bus to share a communication session. In another embodiment, up to a six way conference call can be established with an analog telephone coupled to an ISDN network via the network terminator of the present invention.

Abstract: Disclosed are call processing methods which are performed by a network terminator located at a subscriber's premise. The network terminator is coupled to a digital network and a communication device at the subscriber's premise and can perform call waiting, caller identification, call conferencing without intervention from a telco's switching system that requires an additional charge to the subscriber for these services. In addition, the network terminator can perform a method which allows two digital communication devices coupled to one S-bus to share a communication session. In another embodiment, up to a six way conference call can be established with an analog telephone coupled to an ISDN network via the network terminator of the present invention.