3 results about "Daylight saving time" patented technology

A method, computer program product, and computer system for scheduling electronic meetings. A time zone table including a plurality of local time zones is provided. The time zone table includes a plurality of specified dates and an offset from Coordinated Universal Time (UTC) for each of the plurality of local time zones, and for each date the offset from UTC for each time zone includes an adjustment for daylight savings time or no adjustment for daylight savings time. An electronic meeting request for a plurality of users having a plurality of electronic calendars is provided. A primary time zone and a secondary time zone are also provided. The secondary time zone is different from the primary time zone. A primary time zone start time of the meeting request and a secondary time zone start time of the meeting request are determined using the time zone table.

The purpose of the present application is to provide a method and device for verifying the switching of summer and winter time, which realizes the embedding of the traditional verification logic depending on external test tools and manual intervention into the firmware runtime system of the device, and constructs a closed-loop summer time DST self-verification mechanism with the capabilities of rule analysis, event pre-play, execution monitoring, result comparison and abnormal response. The mechanism does not depend on network connection or external debugging interface, and can still complete the integrity check of the DST switching behavior independently when the device is in a completely offline state, thereby solving the problems of time confusion, data distortion and service interruption caused by the lack of self-checking capability in the prior art.

The purpose of this application is to provide a continuous recording method and device based on winter / summer time switching. By introducing a monotonically increasing logical clock (MLC) decoupled from physical time, constructing a dynamically updated time mapping table, and implementing a dual timestamp metadata embedding strategy of physical time and monotonically increasing MLC, and using time mapping table-based retrieval logic, this method systematically solves the technical problems faced by existing surveillance recording devices in winter / summer time switching scenarios, such as recording loss, duplication, retrieval failure, and time misalignment. This application does not rely on specific operating system features and can be implemented on general embedded Linux or RTOS platforms, exhibiting high engineering feasibility and product compatibility.