Abstract: Techniques for minimizing data flow from a first computing infrastructure hosting an email service platform to a second computing infrastructure at least partly hosting an email security platform that provides security analysis on emails of the email service. The email security platform may extract metadata from emails received at the first computing infrastructure, and send that metadata to the second computing infrastructure that is hosting a back end of the email service platform. The metadata extracted from the emails may include less confidential contained in an email, but enough information for the email security platform to determine whether an email is potentially malicious. Thus, the security analysis performed on emails to detect malicious attacks may be offloaded to the second computing infrastructure, but the metadata that leaves the first computing infrastructure and flows to the second computing infrastructure may be minimized by extracting meaningful metadata.

Abstract: Techniques for minimizing data flow from a first computing infrastructure hosting an email service platform to a second computing infrastructure at least partly hosting an email security platform that provides security analysis on emails of the email service. The email security platform may extract metadata from emails received at the first computing infrastructure, and send that metadata to the second computing infrastructure that is hosting a back end of the email service platform. The metadata extracted from the emails may include less confidential contained in an email, but enough information for the email security platform to determine whether an email is potentially malicious. Thus, the security analysis performed on emails to detect malicious attacks may be offloaded to the second computing infrastructure, but the metadata that leaves the first computing infrastructure and flows to the second computing infrastructure may be minimized by extracting meaningful metadata.

Abstract: An air maintenance tire and pump assembly includes a pair of inline valves are positioned on respective opposite sides of an in-tire air passageway inlet junction and a pair of outlet valves positioned at a downstream side of a respective inline valve. A bypass valve is further provided extending between the downstream valve sides of the inline valves, the bypass valve operative to open and bypass the flow of inlet air through the outlet valves to the tire cavity in the event that a tire cavity pressure is greater than a preset pressure level and close when a tire cavity pressure is less than the preset pressure level.

Abstract: An air maintenance tire and pump assembly includes a pair of inline valves are positioned on respective opposite sides of an in-tire air passageway inlet junction and a pair of outlet valves positioned at a downstream side of a respective inline valve. A bypass valve is further provided extending between the downstream valve sides of the inline valves, the bypass valve operative to open and bypass the flow of inlet air through the outlet valves to the tire cavity in the event that a tire cavity pressure is greater than a preset pressure level and close when a tire cavity pressure is less than the preset pressure level.

Abstract: A phase shifter circuit shifts the phase of a voltage varying RF signal at high RF power levels by using a diode arrangement of back to back diode sets connected in series to reduce the change in capacitive reactance of the diode arrangement. The diode arrangement is connected to a phase adjustment port of a phase shifting device which shifts the phase of the RF signal according to the capacitive reactance level at the phase adjustment port. A control circuit for each back to back diode set can be used to provide independent adjustment of each diode set to balance capacitive reactance responses between the diode sets to further reduce the change in capacitive reactance. In certain embodiments, the phase shifter circuit uses a ninely (90) degree hybrid coupler with two phase adjustment ports, a zero (0) degree port and a -90 degree port.