Recording/reading apparatus, method of generating tag list for recording/reading apparatus, and control unit for recording/reading apparatus

An operation control method of controlling a user terminal configured to control a device, the device comprising,

• means for returning a response signal and a second absolute time point at a time point when the device performs an operation in response to an operation instructing signal received via a network, the operation instructing signal being generated by the user terminal at a first absolute time point,
• means for storing a time difference signal transmitted from the user terminal, wherein the time difference signal represents a difference between the first absolute time point and the second absolute time point, and
• means for correcting a current relative time point of content that is being processed, by the time difference signal to obtain time information for a tag using the corrected current relative time point,
• the method comprising:
• transmitting the operation instructing signal;
• storing the first absolute time point when the operation instructing signal is transmitted;
• generating the time difference signal by calculating a time difference between the first absolute time point and the second absolute time point;
• transmitting the time difference signal to the device;
• and
• storing applications including an application that operates the device and an application that generates the time difference signal.

A device controlled by a user terminal, the device comprising:

• means for returning a response signal and a second absolute time point at a time point when the device performs an operation in response to an operation instructing signal received via a network, the operation instructing signal being generated by the user terminal at a first absolute time point;
• means for storing a time difference signal transmitted from the user terminal, wherein the time difference signal represents a difference between the first absolute time point and the second absolute time point;
• and
• means for correcting a current relative time point of content that is being processed, by the time difference signal to obtain time information for a tag using the corrected current relative time point,
• wherein the user terminal comprises means for storing applications including an application that operates the device and an application that performs the means for generating the time difference signal and means for performing control corresponding to the applications.

A control method of controlling a controlled device comprising a control block, the control block comprising a reproduction control processor configured to reproduce content and a time information processor configured to process time information, the control method comprising:

• returning a response signal and a second absolute time point at a time point when the device performs an operation in response to an operation instructing signal received via a network, the operation instructing signal being generated by the user terminal at a first absolute time point;
• storing a time difference signal transmitted from the user terminal, wherein the time difference signal represents a difference between the first absolute time point and the second absolute time point;
• and
• correcting a current relative time point of content that is being processed, by the time difference signal to obtain time information for a tag using the corrected current relative time point,
• wherein the user terminal comprises means for storing applications including an application that operates the device and an application that performs the means for generating the time difference signal and means for performing control corresponding to the applications.