摘要:
Systems and methods are described for hybrid spread spectrum radio systems. A method, includes receiving a hybrid spread spectrum signal including: fast frequency hopping demodulating and direct sequence demodulating a direct sequence spread spectrum signal, wherein multiple frequency hops occur within a single data-bit time and each bit is represented by chip transmissions at multiple frequencies
摘要:
A composite box structure mounted on and attached to a railway car underframe to form a temperature controlled railway car. The composite box structure defined in part by an exterior metal surface, interior side stakes and at least one layer of fiber reinforced material attached to the side stakes. Insulating material may be disposed between the side stakes, the exterior metal surface and the at least one fiber reinforced layer of fiber reinforced material. The insulating materials provide resistance to heat transfer between the interior and the exterior of the composite box structure. A primary floor assembly and a secondary floor assembly may be mounted on the railway car underframe.
摘要:
An electrical connector having a leadframe housing, a first electrical contact fixed in the leadframe housing, a second electrical contact fixed adjacent to the first electrical contact in the leadframe housing, and a third electrical contact fixed adjacent to the second electrical contact in the leadframe housing is disclosed. Each of the first and second electrical contacts may be selectively designated, while fixed in the lead frame housing, as either a ground contact or a signal contact such that, in a first designation, the first and second contacts form a differential signal pair, and, in a second designation, the second contact is a single-ended signal conductor. The third electrical contact may be a ground contact having a terminal end that extends beyond terminal ends of the first and second contacts.
摘要:
A method and apparatus for a low noise low jitter signal source is provided. A Voltage Controlled Oscillator (VCO) is configured as part of a phase locked Loop (PLL) with a reference clock, a loop filter and a method of offsetting the Tune Voltage input to the Voltage Controlled Oscillator (VCO) to achieve low phase noise. A method and apparatus for precisely controlled jitter injection into a high speed data or clock signals is provided. Using IQ modulation techniques comprising an IQ modulator, by synchronously controlling the IQ modulator inputs precisely controlled phase shift for jitter injection are produced. This can also be used with the low noise low jitter signal source described herein.
摘要:
Systems and methods are described for use in user interactive systems (UIS) so that multiple disparate applications can cooperate to provide broad functionality to users. These systems and methods allow applications to advertise their ability to handle specific functions. This allows applications developed independently to co-exist within the same call session and provide a seamless user experience. A system framework controls the UIS's primary navigational menus, which are automatically updated when new applications are plugged in to the framework. This allows users (assuming they have the proper permissions) to access new applications as soon as they are added, without requiring programmers to manually re-design menus.
摘要:
A multi-channel fiber optic rotary joint (FORJ) includes an external housing, a stationary collimator array, a rotating collimator array, an all-reflective de-rotating prism and a gear ratio. The external housing contains an internal cavity having a longitudinal rotation axis. The stationary collimator array is affixed to the external housing approximate a first end of the internal cavity. The rotating collimator array is rotatably attached to the external housing approximate a second end of the cavity. The second end of the cavity is opposite the first end of the cavity. The rotating collimator array is configured to rotate about the rotation axis. The de-rotating prism is located along the rotation axis within the internal cavity between the stationary collimator array and the rotating collimator array. The prism is retained in a prism housing, which is rotatably attached to the external housing and the prism housing is configured to rotate about the rotation axis.
摘要:
A method for the treatment and/or prophylaxis of diabetes mellitus, conditions associated with diabetes mellitus and certain complications thereof, in a mammal which method comprises administering an effective non-toxic and pharmaceutically acceptable amount of an insulin sensitiser and a biguanide antihyperglycaemic agent, to a mammal in need thereof and a pharmaceutical composition comprising an insulin sensitiser and a biguanide antihyperglycaemic agent.
摘要:
A volume control may be provided with some integrated graphical indication of the presence and/or level of an audio signal that it controls. For example, a slider-type volume control may be provided with a signal meter within the slider itself. A volume control may be provided with a mechanism for showing the non-mute volume control level of a volume when the volume control is muted. For example, a slider-type volume control may display a ghosted slider tab at the level of volume control in effect before muting while at the same time displaying a regular slider tab at a muted level. A user may be able to glance at a volume control and quickly and intuitively understand aspects of the volume control's state such as the level and condition of the signal that is flowing through or blocked by (if muted) the control.
摘要:
An approach for supporting automated fault isolation and recovery is provided. A workflow event corresponding to an alarm indicative of a fault within a customer network is generated. Recovery from the fault is automated according to the workflow event. Alarm information is transmitted to a maintenance management system, wherein the alarm information specifies information about the alarm. A maintenance event information from the maintenance management system is received in response to the transmitted alarm information. Additionally, it is determined whether the alarm is correlated to a maintenance event based on the maintenance event information. Automated handling of the alarm is differentiated based on the correlation.