Abstract: A method includes: when detecting a road recognition request, a first device sends, by using a DMSDP service, a control command to an entity camera corresponding to a virtual camera HAL, where the control command is for controlling the entity camera to capture a current image (S50); the first device receives, by using the DMSDP service, the current image returned by the entity camera in response to the control command; and the first device recognizes, based on the current image and road information that is obtained by a local navigation application, a road on which the first device is located.

Abstract: A method includes: When detecting preview requests for a plurality of cameras, a first device creates views and buffers that correspond to the plurality of cameras in a camera Android application package APK, delivers the buffers corresponding to the views to a framework FWK layer, and obtains camera data streams corresponding to the plurality of cameras from a hardware abstraction layer HAL through the FWK layer; and the first device renders the plurality of camera data streams to the corresponding buffers respectively through a layer transferring module of the FWK layer. The camera data streams of the plurality of cameras are carried and displayed by using the plurality of views, and the plurality of camera data streams are rendered to the buffers of the corresponding views through the layer transferring module, so as to implement quick preview.

Abstract: The present invention relates to a method and system of object reference based on a Data Object Oriented Repository System (DOORS); the method includes: a reference object obtains a proxy address of a referred object according to the referred object; a proxy of the referred object is visited according to the proxy address; an object address recorded in the proxy is read; and the reference object refers to the referred object according to the object address. The system includes: a module adapted for a reference object to obtain a proxy address of a referred object according to the referred object; a module adapted to visit a proxy of the referred object according to the proxy address; a module adapted to read an object address recorded in the proxy; a module adapted for the reference object to refer to the referred object according to the object address.

Abstract: A method and a data processing system for processing a user-defined object based on an object storage. The method includes the following steps: a generic object template is newly built (10); corresponding information of the user-defined object is written into a name attribute, an application program attribute, a display attribute and a data field of the generic object template (20); the above information of the generic object template is stored as a generic object in a format which can be identified by an application program (30); the generic object is stored into the object storage (40); and the application program loads the generic object (50).