Information processing apparatus and information processing method

Abstract

An information processing apparatus includes a communication processing unit configured to communicate with an external communication device and a data processing unit configured to communicate with the communication processing unit via a wired data communication path. The data processing unit is configured to interpret address information received from the external communication device. The communication processing unit includes a memory where data transmitted and received between the external communication device and the data processing unit is temporarily stored. The communication processing unit further includes a control unit configured to control data writing in and data reading from the memory, perform an error check process by a code included in a received data from the external communication device, and transmit the address information received from the external communication device to the data processing unit without interpreting the address information.

The invention is claimed as follows: 
     
       1. An information processing apparatus comprising:
 a communication processing unit configured to communicate with an external communication device; and 
 a data processing unit configured to communicate with the communication processing unit via a wired data communication path, and configured to interpret address information received from the external communication device; 
 wherein the communication processing unit comprises:
 a memory where data transmitted and received between the external communication device and the data processing unit is temporarily stored, and 
 a control unit configured to control data writing in and data reading from the memory, perform an error check process by a code included in a received data from the external communication device, and transmit the address information received from the external communication device to the data processing unit without interpreting the address information. 
 
 
     
     
       2. The information processing apparatus according to  claim 1 ,
 wherein the control unit outputs a reception notification of data from the external communication device to the data processing unit after the error check process. 
 
     
     
       3. The information processing apparatus according to  claim 2 ,
 wherein the control unit determines a command request included in the received data. 
 
     
     
       4. The information processing apparatus according to  claim 3 ,
 wherein, when the command request received from the external communication device is a data reading request, the control unit acquires data from the memory and transmits the data to the external communication device. 
 
     
     
       5. The information processing apparatus according to  claim 1 ,
 wherein, when a command request received from the external communication device is a data reading request, the control unit is configured to: 
 (a) perform the error check process, 
 (b) output a reception notification of data from the external communication device to the data processing unit, 
 (c) receive a requested data from the data processing apparatus, 
 (d) store the requested data into the memory, 
 (e) acquire data from the memory, and 
 (f) transmit the data to the external communication device. 
 
     
     
       6. The information processing apparatus according to  claim 3 ,
 wherein, when the command request received from the external communication device is a data writing request, the control unit stores data in the memory, acquires data from the memory in response to a request from the data processing unit, and outputs the data to the data processing unit. 
 
     
     
       7. The information processing apparatus according to  claim 1 ,
 wherein, when a command request received from the external communication device is a data writing request, the control unit is configured to: 
 (a) perform the error check process, 
 (b) store data in the memory, 
 (c) acquire data from the memory, 
 (d) transmit the data to the data processing unit, 
 (e) receive a completion notification of data writing by the data processing unit from the data processing unit, and 
 (f) output a completion notification of data writing by the data processing requested data to the external communication device. 
 
     
     
       8. An information processing method performed by an apparatus including a communication processing unit configured to communicate with an external communication device, a data processing unit configured to communicate with the communication processing unit via a wired data communication path, and a memory where data transmitted and received between a communication device and the data processing unit is temporarily stored, the method comprising:
 controlling data writing in and data reading from the memory; 
 performing an error check process by a code included in a received data from the external communication device; 
 transmitting, by the communication processing unit, address information received from the external communication device to the data processing unit without interpreting the address information; and 
 interpreting the address information by the data processing unit. 
 
     
     
       9. The information processing method according to  claim 8 , further comprising:
 outputting a reception notification of data from the external communication device to the data processing unit after the error check process. 
 
     
     
       10. The information processing method according to  claim 9 , further comprising:
 determining a command request included in the received data. 
 
     
     
       11. The information processing method according to  claim 10 , further comprising:
 acquiring data from the memory and transmitting the data to the external communication device when the command request received from the external communication device is a data reading request. 
 
     
     
       12. The information processing method according to  claim 8 ,
 wherein, when a command request received from the external communication device is a data reading request, the method further comprises: 
 performing the error check process; 
 outputting a reception notification of data from the external communication device to the data processing unit; 
 receiving a requested data from the data processing apparatus; 
 storing the requested data into the memory; 
 acquiring data from the memory; and 
 transmitting the data to the external communication device. 
 
     
     
       13. The information processing method according to  claim 10 ,
 wherein, when the command request received from the external communication device is a data writing request, the method further comprises: 
 storing data in the memory; 
 acquiring data from the memory in response to a request from the data processing unit; and 
 outputting the data to the data processing unit. 
 
     
     
       14. The information processing method according to  claim 8 ,
 wherein, when a command request received from the external communication device is a data writing request, the method further comprises: 
 performing the error check process, 
 storing data in the memory, 
 acquiring data from the memory, 
 transmitting the data to the data processing unit, 
 receiving a completion notification of data writing by the data processing unit from the data processing unit, and 
 outputting a completion notification of data writing by the data processing requested data to the external communication device. 
 
     
     
       15. A communication processing apparatus comprising:
 a first interface configured to communicate with an external communication device;   a second interface configured to communicate with a data processing apparatus via a wired data communication path;   a memory configured to temporarily store data transmitted and received between the external communication device and the data processing apparatus; and   a control unit configured to control data writing in and data reading from the memory, perform an error check process by a code included in a received data from the external communication device, and transmit address information received from the external communication device to the data processing apparatus without interpreting the address information.    
     
     
       16. The communication processing apparatus according to claim 15, wherein
 the control unit outputs a reception notification of data from the external communication device to the data processing apparatus after the error check process.    
     
     
       17. The communication processing apparatus according to claim 15, wherein
 the control unit determines a command request included in the received data.    
     
     
       18. The communication processing apparatus according to claim 17, wherein
 when the command request received from the external communication device is a data reading request, the control unit acquires data from the memory and transmits the data to the external communication device.    
     
     
       19. The communication processing apparatus according to claim 15, wherein
 when a command request received from the external communication device is a data reading request, the control unit is configured to:   (a) perform the error check process,   (b) output a reception notification of data from the external communication device to the data processing apparatus,   (c) receive a requested data from the data processing apparatus,   (d) store the requested data into the memory,   (e) acquire data from the memory, and   (f) transmit the data to the external communication device.    
     
     
       20. The communication processing apparatus according to claim 17, wherein
 when the command request received from the external communication device is a data writing request, the control unit stores data in the memory, acquires data from the memory in response to a request from the data processing apparatus, and outputs the data to the data processing apparatus.    
     
     
       21. The communication processing apparatus according to claim 15, wherein
 when a command request received from the external communication device is a data writing request, the control unit is configured to:   (a) perform the error check process,   (b) store data in the memory,   (c) acquire data from the memory,   (d) transmit the data to the data processing apparatus,   (e) receive a completion notification of data writing by the data processing apparatus from the data processing apparatus, and   (f) output a processing completion notification to the external communication device.    
     
     
       22. The communication processing apparatus according to claim 15, wherein
 the communication processing apparatus is an IC chip.    
     
     
       23. An information processing method performed by a communication processing apparatus configured to communicate with an external communication device, and configured to communicate with a data processing apparatus via a wired communication path, the communication processing apparatus including a memory where data transmitted and received between the external communication device and the data processing apparatus is temporarily stored, the method comprising:
 controlling data writing in and data reading from the memory;   performing an error check process by a code included in a received data from the external communication device; and   transmitting address information received from the external communication device to the data processing apparatus without interpreting the address information.    
     
     
       24. The information processing method according to claim 23, further comprising:
 outputting a reception notification of data from the external communication device to the data processing apparatus after the error check process.    
     
     
       25. The information processing method according to claim 23, further comprising:
 determining a command request included in the received data.    
     
     
       26. The information processing method according to claim 25, further comprising:
 acquiring data from the memory and transmitting the data to the external communication device when the command request received from the external communication device is a data reading request.    
     
     
       27. The information processing method according to claim 23, wherein
 when a command request received from the external communication device is a data reading request, the method further comprises:   performing the error check process;   outputting a reception notification of data from the external communication device to the data processing apparatus;   receiving a requested data from the data processing apparatus;   storing the requested data into the memory;   acquiring data from the memory; and   transmitting the data to the external communication device.    
     
     
       28. The information processing method according to claim 25, wherein
 when the command request received from the external communication device is a data writing request, the method further comprises:   storing data in the memory;   acquiring data from the memory in response to a request from the data processing apparatus; and   outputting the data to the data processing apparatus.    
     
     
       29. The information processing method according to claim 23, wherein
 when a command request received from the external communication device is a data writing request, the method further comprises:   performing the error check process,   storing data in the memory,   acquiring data from the memory,   transmitting the data to the data processing apparatus,   receiving a completion notification of data writing by the data processing apparatus from the data processing apparatus, and   outputting a processing completion notification to the external communication device.