Abstract:
Apparatus 20, 30, 50, 60 for receiving a carrier signal modulated by a wanted signal, the modulated carrier signal occupying one of a plurality of channels whose central frequencies are separated from one another by a fixed frequency referred to as the channel spacing, the apparatus including a local oscillator 28 for generating first and second signals at a frequency which is not an integral multiple of half the channel spacing whereby when the received carrier signal is mixed with the first and second signals, a complex, digital Very Low Intermediate Frequency (VLIF) signal is generated in which the wanted signal is centred about a VLIF which is slightly larger than half the channel spacing.
Abstract:
An arrangement ensuring the change-over of two channels through which the same digital information is conveyed with automatic data alignment over a .+-.3.5 bit range comprises for each channel an array of buffer stores operating at a write rate H.sub.i /N.sub.i (where i=1, 2), an oscillator operating at a rate H which provides reading of the buffer stores at the rate H/N and being synchronized in phase-opposition with one or the other of the write rates, and a logic comparator controlling the write rates H.sub.i /N.sub.i, the routing of the write rates to the input of the oscillator, as well as a change-over switch for the data.In the buffer store of the channel assumed to be the one whose quality degrades, the data are converted into N parallel streams at the rate H.sub.2 /N and are read at the rate H/N of the oscillator. In the other channel, the write rate of the buffer store is forced to the rate H.sub.1 /N-1, the read rate remaining unchanged, until there is a coincidence of N bits in the two channels; thereupon the data stream is switched, the write rate is locked at H.sub.1 /N and this write rate is applied to the oscillator.
Abstract:
The contents of a collapsible tube are expelled by placing the tube in a close-fitting sleeve having a removable cap with an orifice fitting over the discharge nozzle of the tube and a plunger which engages the other end of the tube and has a diametral groove to receive the crimped closed end of the tube. Movement of the plunger towards the cap causes the wall of the tube to concertina.
Abstract:
A bracelet including a plurality of circuits. The plurality of circuits includes a wireless communication circuit configured to communicate with a first device, a near-field communication circuit configured to communicate with a second device via a near-field communication antenna, and a power supply circuit including a battery. The first device is remote from the bracelet. The power supply circuit is configured to supply power to one or more of the plurality of circuits.
Abstract:
An apparatus, and an associated method, forms a user interface permitting input of input instructions to an electronic device. Input commands are evidence by tactile input forces applied to a force receiving surface. Force sensing elements are positioned to sense indications of the tactile input force. The force sensing element is caused to exhibit a selected input parameter value through application of a selected force thereto by application of a tightening torque to a fastener positioned in proximity to the force sensing element.
Abstract:
A battery protection mechanism is provided within an electronic device. A door has a latch which fits into a latch retention-release mechanism in the base of the device. A spring under tension within a retention-release mechanism presses against the latch when the device is in a closed configuration. A foot attached to a button in the base of the device urges the door out of position upon depression or activation of the button.
Abstract:
An apparatus, and an associated method, forms a user interface permitting input of input instructions to an electronic device. Input commands are evidence by tactile input forces applied to a force receiving surface. Force sensing elements are positioned to sense indications of the tactile input force. The force sensing element is caused to exhibit a selected input parameter value through application of a selected force thereto by application of a tightening torque to a fastener positioned in proximity to the force sensing element.
Abstract:
A method includes applying a lip, comprised of a first material, along at least a portion of an actuator of an electronic device, and applying a coating, comprised of an elastic material, to cover a part of the actuator, the coating disposed to facilitate actuation of the actuator.
Abstract:
A radio frequency (RF) receiver includes a local oscillator (LO) module that receives a control signal and that generates a LO signal at a LO frequency that is based on the control signal, a LO mixer module that generates an intermediate frequency (IF) signal based on a radio frequency (RF) signal and the LO signals, a complex intermediate frequency (IF) mixer module that generates a baseband signal based on the IF signal and an IF oscillator signal, and a channel monitoring module that generates the control signal based on the baseband signal.
Abstract:
In a method for mixing an information signal, a digital information signal at a sampling frequency fs is generated. A mixed signal is generated as a multiplication of the digital information signal with a mixing signal at the sampling frequency fs, wherein the mixing signal corresponds to a sinusoid having a frequency fm equal to fs/8.