Abstract: Magnetic field sensors and related techniques can identify passing conditions, failing conditions, and marginal conditions of a sensed object. A magnetic field sensor used in the techniques can have a substrate and can have one or more magnetic field sensing elements disposed on the substrate that are configured to generate a proximity signal responsive to a proximity of the sensed object. The magnetic field sensor can have a self-test module disposed on the substrate, coupled to receive the proximity signal, configured to sample the proximity signal, by analog sampling or digitally converting, to generate a plurality of analog samples or a plurality of digital samples, respectively, each digital sample comprising a plurality of digital bits, configured to select samples from among the plurality of analog or digital samples, and configured to communicate the selected samples to outside of the magnetic field sensor.

Abstract: Methods for controlling unsolicited messages in a messaging network using an authoritative domain name (DNS) server, in which a requester intending to send an e-mail message to a recipient queries the DNS server associated with the recipient's domain. The response sent from the DNS server is dependent upon a security policy associated with the requester, which results from interrogations to determine the probability that the requester is sending unsolicited messages or spam. A validity factor is set to a first indicator if the request passes or to a second indicator if the request fails. The response from the DNS server provides the network address if the validity factor is set to the first indicator. A suitable not-the-network-address response is sent if the validity factor is set to the second indicator. The authoritative DNS server thereby controls, blocks, or reroutes the message and lightens the load on the recipient's mail server and ISP(s).

Abstract: Magnetic field sensor and related techniques can identify passing conditions, failing conditions, and marginal conditions of a sensed object. The magnetic field sensor and techniques can use one or more peak values of a proximity signal representative of proximity of the sensed object, can generate one or more difference values representative of difference between the peak values of the proximity signal and threshold values of a threshold signal proportional to the peak values, can categorize the one or more difference values into a plurality of potential categories, wherein at least one of the plurality of potential categories is representative of a respective passing self-test and wherein another at least one of the plurality of potential categories is representative of a respective marginally passing self-test, can assign category values to the plurality of potential categories, and can communicate at least one of the plurality of category values.

Abstract: A magnetic field sensor can provide an output signal indicative of a passing condition or a failing condition of the magnetic field sensor. The output signal has one of a variety of output signal formats.

Abstract: A circuit to detect a movement of an object includes a magnetic field sensing element for generating a magnetic field signal proportional to a magnetic field associated with the object and a motion detector to generate a motion signal indicative of the movement of the object. The motion detector includes a peak identifying circuit to provide a peak signal and a peak sample selection module that selects a sample associated with one or more prior cycles of a magnetic field signal to generate a selected peak signal. The motion detector further includes a threshold generator to generate a threshold signal as a function of the selected peak signal and a comparator to compare the threshold signal with the magnetic field signal to generate the motion signal. Peak samples from prior magnetic field signal cycles may be averaged for use to establish the threshold signal. A method associated with the circuit is also described.

Abstract: A circuit to detect a movement of an object includes a magnetic field sensing element for generating a magnetic field signal proportional to a magnetic field associated with the object and a motion detector to generate a motion signal indicative of the movement of the object. The motion detector includes a peak identifying circuit to provide a peak signal and a peak sample selection module that selects a sample associated with one or more prior cycles of a magnetic field signal to generate a selected peak signal. The motion detector further includes a threshold generator to generate a threshold signal as a function of the selected peak signal and a comparator to compare the threshold signal with the magnetic field signal to generate the motion signal. Peak samples from prior magnetic field signal cycles may be averaged for use to establish the threshold signal. A method associated with the circuit is also described.

Abstract: Magnetic field sensor and related techniques can identify passing conditions, failing conditions, and marginal conditions of a sensed object. The magnetic field sensor and techniques can use one or more peak values of a proximity signal representative of proximity of the object, DC offset values of the proximity signal, or threshold values related to an amplitude of a signal representative of the proximity signal to identify the conditions.

Abstract: Magnetic field sensor and related techniques can identify passing conditions, failing conditions, and marginal conditions of a sensed object. The magnetic field sensor and techniques can use one or more peak values of a proximity signal representative of proximity of the object, DC offset values of the proximity signal, or threshold values related to an amplitude of a signal representative of the proximity signal to identify the conditions.

Abstract: A magnetic field sensor can provide an output signal indicative of a passing condition or a failing condition of the magnetic field sensor. The output signal has one of a variety of output signal formats.

Abstract: Magnetic field sensor and related techniques can identify passing conditions, failing conditions, and marginal conditions of a sensed object. The magnetic field sensor and techniques can use one or more peak values of a proximity signal representative of proximity of the object, DC offset values of the proximity signal, or threshold values related to an amplitude of a signal representative of the proximity signal to identify the conditions.

Abstract: Methods for controlling unsolicited messages in a messaging network using an authoritative domain name (DNS) server, in which a requester intending to send an e-mail message to a recipient queries the DNS server associated with the recipient's domain. The response sent from the DNS server is dependent upon a security policy associated with the requester, which results from interrogations to determine the probability that the requester is sending unsolicited messages or spam. A validity factor is set to a first indicator if the request passes or to a second indicator if the request fails. The response from the DNS server provides the network address if the validity factor is set to the first indicator. A suitable not-the-network-address response is sent if the validity factor is set to the second indicator. The authoritative DNS server thereby controls, blocks, or reroutes the message and lightens the load on the recipient's mail server and ISP(s).

Abstract: A method and system for downloading via a browser a target application using a target control is provided. An installation system provides a web page that is downloaded from a web server to a computer system on which the target application is to be installed. The web page includes a setup frame, a test frame, and an execution frame. The test frame determines whether the target application is installed at the computer system and, if not, effects the invocation of a download/installation component to download and install the target application and an associated target control. The test frame is periodically reloaded and checks to see if the target control is installed. If the target control is installed, then the test frame notifies the execution frame. The execution frame then invokes the target control to effect the launching of the target application.