Apparatus and method of data processing through serial bus

Abstract

Data is received which is transmitted through a serial bus in a predetermined transmission band. The serial bus is preferably in conformity with the IEEE 1394 standards. One of recording modes for different recording rates is selected in accordance with the transmission band of the received data. The data is recorded in the selected recording mode. Data is reproduced which has been recorded in a recording mode for a predetermined recording rate. A transmission band is allocated, based on the recording mode, for transmitting the data through a serial bus.

1 - 12 . (canceled).  
   
   
       13 . A data output apparatus comprising: 
 an output section to output data in an output mode selected among a plurality of output modes for different output rates;    a digital interface connected to external equipment through a serial bus, to allocate a transmission band before data transmission and then transmit the data to the external equipment through the serial bus in the allocated transmission band; and    a controller to control the output section for data output and the digital interface for data communication,    wherein when outputting the data to the external equipment,    the output section outputs the data in the output mode selected among the output modes,    the controller controls the digital interface so that the digital interface can allocate the transmission band corresponding to the selected output mode, and    the digital interface transmits the data to the external equipment in the allocated transmission band.    
   
   
       14 . The apparatus according to  claim 13 , wherein the serial bus ins in conformity with the IEEE (Institute of Electrical and Electronics Engineers) standards.  
   
   
       15 . A data output method comprising the steps of: 
 outputting data in an output mode selected among a plurality of output modes for different reproducing rates;    allocating a transmission band before data transmission;    transmitting the data through a serial bus in the allocated transmission band; and    controlling data output and data transmission,    wherein when outputting the data and transmitting the data through the serial bus,    outputting the data in the output mode selected among the output modes,    allocating the transmission band corresponding to the selected output mode, and transmitting the data through the serial bus in the allocated transmission band.    
   
   
       16 . The method according to  claim 15 , wherein the serial bus is in conformity with the IEEE (Institute of Electrical and Electronics Engineers) standards.