Patent ID: 9002171
Filing Date: 2015-04-07
Classification: H04N

Abstract:
1. A user terminal configured to generate an operation instructing signal at a first absolute time point and send the generated operation instructing signal to control a device via a network, wherein the device comprises a first circuitry configured to provide a response signal along with a second absolute time point when the device performs an operation in response to the operation instructing signal received via a network; a second circuitry configured to store time difference information representing a difference between the first absolute time point and the second absolute time point; and a third circuitry configured to correct a current relative time point of content that is being processed, by the time difference information to obtain time information for a tag using the corrected current relative time point, the user terminal comprising: a first transmitter configured to transmit the operation instructing signal to the device; a memory configured to store the first absolute time point when the operation instructing signal is transmitted; a time information processor configured to generate the time difference information by calculating a time difference between the first absolute time point and the second absolute time point; and a second transmitter configured to transmit the time difference information to the device, wherein the first or second absolute time point depends on a time point detected in common by the device and the user terminal.