Patent ID: 9363465
Filing Date: 2016-06-07
CPC Classification: H04N

Claim Text:
1. A data processing apparatus comprising: a transmission unit configured to transmit a clock signal to a recording medium; a communication unit configured to transmit a command to the recording medium and receive data output from the recording medium in response to a timing signal obtained by delaying the clock signal; and a control unit configured to control said communication unit to transmit a transmission command for requesting the recording medium to transmit a predetermined data string having a predetermined pattern and receive the predetermined data string output from the recording medium, and wherein said control unit performs an adjustment process for adjusting a delay amount of the timing signal based on a result that said communication unit has received the predetermined data string, and said control unit has a plurality of modes including a first mode in which the delay amount of the timing signal is adjusted based on a result that said communication unit has received the predetermined data string in response to a plurality of timing signals each has a delay amount in a first range and a second mode in which the delay amount of the timing signal is adjusted based on a result that said communication unit has received the predetermined data string in response to a plurality of timing signals each has a delay amount in a second range narrower than the first range.