Image data transmission apparatus and method, remote display control apparatus and control method thereof, program, and storage medium

Abstract

In a case where a display screen of a transmission originator, including image data such as photographs, is displayed remotely on a device of a transmission destination, compressed image data of the image portion such as photographs on the display screen which is stored in a storage unit of the transmission originator is transmitted to the transmission destination device so that the image of the photograph portion can be displayed remotely on the screen of the transmission destination device with high image quality.

1 . An image data transmission apparatus that transmits image data corresponding to a display of a display unit to a device connected to said apparatus through a network for having the device display the display of the display unit, comprising: 
 a transmission data generation unit that generates transmission data including image data corresponding to the display of the display unit and attribute information of the image data; and    a transmission control unit that transmits the transmission data generated by said transmission data generation unit to the device connected to said apparatus through the network.    
   
   
       2 . The image data transmission apparatus according to  claim 1 , wherein in a case where the display of the display unit is based on a plurality of image data, said transmission data generation unit adds attribute information, indicating that the transmission data is in a XOP (XML-binary Optimization Packaging) format, to a header of the transmission data.  
   
   
       3 . The image data transmission apparatus according to  claim 1 , wherein in a case where the display of the display unit is based on a plurality of image data, said transmission data generation unit generates the transmission data based on rendering data and each image data, said rendering data including layout information for specifying on the display unit a display position and size of the display based on each image data, and reference information for specifying each image data.  
   
   
       4 . An image data transmission method of transmitting image data corresponding to a display of a display unit to a device connected through a network for having the device display the display of the display unit, comprising: 
 a transmission data generation step of generating transmission data including image data corresponding to the display of the display unit and attribute information of the image data; and    a transmission control step of transmitting the transmission data generated in said transmission data generation step to the device connected through the network.    
   
   
       5 . The image data transmission method according to  claim 4 , wherein in a case where the display of the display unit is based on a plurality of image data, in said transmission data generation step, attribute information, indicating that the transmission data is in a XOP (XML-binary Optimization Packaging) format, is added to a header of the transmission data.  
   
   
       6 . The image data transmission method according to  claim 4 , wherein in a case where the display of the display unit is based on a plurality of image data, in said transmission data generation step, the transmission data is generated based on rendering data and each image data, said rendering data including layout information for specifying on the display unit a display position and size of the display based on each image data, and reference information for specifying each image data.  
   
   
       7 . A remote display control apparatus that adapts a display of a display unit of a first device to a display format of a display unit of a second device connected to the first device through a network for having the second device perform displaying, comprising: 
 an analysis unit that analyzes an attribute of transmission data including image data, which is transmitted from the first device;    an image data generation unit that generates image data adapted to the display format of the display unit of the second device based on the image data in accordance with an analysis result of said analysis unit; and    a display control unit that have the display unit of the second device perform displaying based on the image data generated by said image data generation unit.    
   
   
       8 . The remote display control apparatus according to  claim 7 , wherein in a case where the analysis of said analysis unit finds that the transmission data is in a XOP (XML-binary Optimization Packaging) format, said image data generation unit obtains a scaling factor necessary to display the image data included in the transmission data on the display unit of the second device, based on the display format of the display unit of the second device.  
   
   
       9 . The remote display control apparatus according to  claim 8 , wherein in a case where the analysis of said analysis unit finds that the transmission data is in a XOP (XML-binary Optimization Packaging) format, the transmission data includes a plurality of image data and rendering data that includes layout information for specifying on the display unit of the first device a display position and size of the display based on each image data, and reference information for specifying each image data, and 
 said image data generation unit rewrites the rendering data based on the scaling factor.    
   
   
       10 . The remote display control apparatus according to  claim 8 , wherein said image data generation unit generates image data adapted to the display format of the display unit of the second device based on the rewritten rendering data and each image data.  
   
   
       11 . A control method of a remote display control apparatus that adapts a display of a display unit of a first device to a display format of a display unit of a second device connected to the first device through a network for having the second device perform displaying, comprising: 
 an analysis step of analyzing an attribute of transmission data including image data, which is transmitted from the first device;    an image data generation step of generating image data adapted to the display format of the display unit of the second device based on the image data in accordance with an analysis result of said analysis step; and    a display control step of having the display unit of the second device perform displaying based on the image data generated in said image data generation step.    
   
   
       12 . The control method of a remote display control apparatus according to  claim 11 , wherein in a case where the analysis of said analysis step finds that the transmission data is in a XOP (XML-binary Optimization Packaging) format, said image data generation step obtains a scaling factor necessary to display the image data included in the transmission data on the display unit of the second device, based on the display format of the display unit of the second device.  
   
   
       13 . The control method of a remote display control apparatus according to  claim 11 , wherein in a case where the analysis of said analysis step finds that the transmission data is in a XOP (XML-binary Optimization Packaging) format, the transmission data includes a plurality of image data and rendering data that includes layout information for specifying on the display unit of the first device a display position and size of the display based on each image data, and reference information for specifying each image data, and 
 in said image data generation step the rendering data is rewritten based on the scaling factor.    
   
   
       14 . The control method of a remote display control apparatus according to  claim 11 , wherein in said image data generation step, image data adapted to the display format of the display unit of the second device is generated based on the rewritten rendering data and each image data.  
   
   
       15 . A television apparatus having the remote display control apparatus described in  claim 7 .  
   
   
       16 . A television system comprising: 
 the image data transmission apparatus described in  claim 1;  and    the television apparatus described in  claim 15 , which is connected to said image data transmission apparatus through a network.    
   
   
       17 . A program that is stored in a computer-readable storage medium and causes a computer to execute the image data transmission method described in  claim 4 .  
   
   
       18 . A program that is stored in a computer-readable storage medium and causes a computer to execute the control method of a remote display control apparatus described in  claim 11 .  
   
   
       19 . A computer-readable storage medium storing the program described in  claim 17 .  
   
   
       20 . A computer-readable storage medium storing the program described in  claim 18.