A data transmitting and receiving device includes: a data transmitting circuit transmitting a clock signal and a data signal synchronized to the clock signal; and a data receiving circuit receiving the clock signal and the data signal; wherein: the data receiving circuit includes a phase error detection circuit detecting a phase error between the data signal and the clock signal; and the data transmitting circuit includes a phase adjusting circuit adjusting a phase of at least one of the clock signal and the data signal based on the phase error.

An image processing system includes: an image processing apparatus; an instruction server configured to transmit instruction information to the image processing apparatus via a router having a firewall function; and a session server configured to set up a session between the image processing apparatus and the instruction server. The image processing apparatus is configured to switch, in a case where the state of the image processing apparatus is a power saving state when a time specified by a transmission interval elapses from transmission of a connection confirmation packet for the session with the instruction server, to a state in which at least the connection confirmation packet can be transmitted.

An image processing system includes: an image processing apparatus; an instruction server configured to transmit instruction information to the image processing apparatus via a router having a firewall function; and a session server configured to set up a session between the image processing apparatus and the instruction server. The image processing apparatus is configured to switch, in a case where the state of the image processing apparatus is a power saving state when a time specified by a transmission interval elapses from transmission of a connection confirmation packet for the session with the instruction server, to a state in which at least the connection confirmation packet can be transmitted.

A server 100 capable of surely synchronizing MFPs 102 and 103. The server 100 writes a first time that the server 101 measures in response to storing of information changed in the MFP 102. When the time that the server 101 measures is changed, a time difference between the time before the change and the time after the change is calculated. A modified first time is acquired by applying the calculated time difference to the written first time when the time that the server 101 measures is changed after the first time has been written. When the modified first time is a time between a time when a previous inquiry was received from the MFP 103 and a time when a current inquiry from the MFP 103 is received, the information indicating the content of the changed information is transmitted to the MFP 103.

A server 100 capable of surely synchronizing MFPs 102 and 103. The server 100 writes a first time that the server 101 measures in response to storing of information changed in the MFP 102. When the time that the server 101 measures is changed, a time difference between the time before the change and the time after the change is calculated. A modified first time is acquired by applying the calculated time difference to the written first time when the time that the server 101 measures is changed after the first time has been written. When the modified first time is a time between a time when a previous inquiry was received from the MFP 103 and a time when a current inquiry from the MFP 103 is received, the information indicating the content of the changed information is transmitted to the MFP 103.

An image processing system comprises a master image processing apparatus provided with an image forming section for processing an image and a slave image processing apparatus provided with an image forming section for forming an image. The master image processing apparatus comprises a first user information storage section which stores user information, an acquisition section, a first user information update section which updates the user information stored in the first user information storage section according to the user information acquired by the acquisition section and a sending section which sends the user information acquired by the acquisition section to the slave image processing apparatus. A second user information storage section of the slave image processing apparatus stores the user information. A second user information update section updates the user information stored in the second user information storage section according to the user information received by a receiving section.

An image processing system comprises a master image processing apparatus provided with an image forming section for processing an image and a slave image processing apparatus provided with an image forming section for forming an image. The master image processing apparatus comprises a first user information storage section which stores user information, an acquisition section, a first user information update section which updates the user information stored in the first user information storage section according to the user information acquired by the acquisition section and a sending section which sends the user information acquired by the acquisition section to the slave image processing apparatus. A second user information storage section of the slave image processing apparatus stores the user information. A second user information update section updates the user information stored in the second user information storage section according to the user information received by a receiving section.

A system and method for capturing and rendering of images includes a wearable or portable data device including a digital camera. A data storage includes data specifying a default image printer and default print settings for digital images. An image capture operation triggers a prompt for expedited image rendering in accordance with preset default settings. Input responsive to the prompt selects for immediate commencement of a print operation for a captured image in accordance with default settings. Image capture and communication can be accomplished with wearable digital eyewear working in concert with an associated, portable data device such as a smartphone. Captured images may be queued in a user device when a data path to the printer is unavailable.

A system and method for capturing and rendering of images includes a wearable or portable data device including a digital camera. A data storage includes data specifying a default image printer and default print settings for digital images. An image capture operation triggers a prompt for expedited image rendering in accordance with preset default settings. Input responsive to the prompt selects for immediate commencement of a print operation for a captured image in accordance with default settings. Image capture and communication can be accomplished with wearable digital eyewear working in concert with an associated, portable data device such as a smartphone. Captured images may be queued in a user device when a data path to the printer is unavailable.

A method and apparatus for transmitting and receiving an MPEG-2 TS-based media file are provided. In the method of transmitting an MPEG2 Transport Stream (TS)-based media file, a Presentation Time Stamp (PTS) of a Presentation Unit (PU) is mapped to a Media Presentation Time (MPT) for synchronization with other media with respect to at least one program element forming a program included in the media file; and synchronization information including the mapped media presentation time is transmitted together with the media file, wherein the media presentation time is provided for a first PU in a segment of the transmitted media file.