Abstract: A method and device for on-chip bus arbitration are disclosed. The method includes: dividing devices into a first level, a second level and a third level from high to low; and in each arbitration period, calculating remaining processing time of each real-time transaction, and upgrading a device making a request required to be processed immediately to the first level in the current arbitration period; monitoring bandwidth usage amount of devices of the first level and the second level respectively, and downgrading a device whose bandwidth usage amount exceeds a preset bandwidth threshold value to the third level in the current arbitration period; and in devices making requests for a bus use right, if a device of the highest level is the device of the first level, authorizing the device of the first level; and if it is not the device of the first level, authorizing a device making continuous requests.

Abstract: A client instant information service system and method is disclosed. The invention is a utility that can be operated with different OSs. The client/user only needs to execute one signal action to complete a given operation through the UOI (User Operating Interface) provided by the invention. The invention can also perform content updating, downloading, and browsing by instantly informing the client/user of any change on the server to achieve the purpose of real-time information/data transmission. The disclosed method includes the steps of: calling the interface generation module to generate user interfaces by the procedure control unit, calling the operation response module based on input messages of the client/user, calling the real-time data module to perform procedures and receiving an EXIT request from the client/user.