Yingxian
Yingxian Sun, Shenzhen CN
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20120311601 | Method and apparatus for implementing task-process-table based hardware control - Disclosed is a method for implementing task-process-table based hardware control, which includes dividing a task that has to be implemented by a hardware circuit into multiple sub-processes, and determining the depth of the task process table according to the number of the sub-processes; according to the control information of the hardware unit corresponding to each sub-process and the number (SPAN) of clock cycles occupied by hardware processing for the sub-process, determining the bit width of the task process table and generating the task process table; starting the hardware unit corresponding to each sub-process in an order of the sub-processes, under the control of the control information in the task process table, and completing the processing of each sub-process. A device for implementing hardware control is also disclosed. The disclosure enables precise control of the hardware control flow and is of versatility. For the hardware implementation of a task with a complex algorithm flow, the data processing flow is accurate, and the development efficiency is improved. | 12-06-2012 |
Yingxian Wang, Palo Alto, CA US
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20130343543 | USER EXPERIENCE AND METHOD FOR PROMOTING A LOW-ASSURANCE CALL TO A HIGH-ASSURANCE CALL ON A CALLING DEVICE - A low-assurance call on a mobile device to another device may be promoted to a high-assurance call using a user interface. The participants during the call do not need to hang up and start a new high-assurance call. A caller can swipe an icon up a slider, for example, and start a process of promoting the call. The initial low assurance call using SIP servers is terminated but this is transparent to the callers. Once the swipe is performed, a DTLS negotiation is performed between the devices. During this DTLS handshake, which is done directly between the device without involvement of the SIP servers, a key is exchanged. Only the calling devices are aware of this key which is used to encrypt media during the call. Screens on the calling devices show that the call is now high-assurance and security details of the call may also be displayed. | 12-26-2013 |
Yingxian Zhao, Ningbo CN
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20130184504 | METHOD FOR PREPARING 2,3-DIMETHYL-2,3-DINITROBUTANE - The present invention relates to a method for preparing 2,3-dimethyl-2,3-dinitrobutane (DMNB), which includes the following steps: (1) making titanium-silicate molecular sieve catalyst, acetone, hydrogen peroxide and ammonia contact and react at 65-80° C. to obtain a modified titanium-silicate molecular sieve catalyst; and (2-1) making acetone oxime and hydrogen peroxide contact and react in the presence of the modified titanium-silicate molecular sieve catalyst and water under the conditions of temperature of 60-90° C. and pH of 8-10, and separating DMNB from the reaction products thereof; or (2-2) making acetone, ammonia and hydrogen peroxide contact and react in the presence of the modified titanium-silicate molecular sieve catalyst and water under the conditions of temperature of 60-90° C. and pH of 8-10, and separating DMNB from the reaction products thereof. By the method provided by the present invention, DMNB can be prepared without having to use dangerous chemicals, such as 2-nitropropane, NaH and the like. | 07-18-2013 |