Patent ID: 8925020
Filing Date: 2014-12-30
Classification: H04L,H04N

Abstract:
1. A transmission system where reproduction devices and display devipces may mutually transmit and receive content through a network, each reproduction device reproducing the content, each display device displaying the content, wherein the reproduction device includes: a display device storage unit which stores (i) identification information of the display devices capable of transmitting and receiving a signal using communication means different from the network and (ii) identification information of the display devices capable of transmitting and receiving a signal using the network; and a content list storage unit which stores content lists provided from the reproduction device; the display device includes: a reproduction device storage unit which stores (i) identification information of the reproduction devices capable of transmitting and receiving a signal using the communication means and (ii) identification information of the reproduction devices capable of transmitting and receiving a signal using the network; in which the communication means transmits and receives the signal using an HDMI (high-definition multimedia interface) cable based on a HDMI standard and the network conforms to a digital living network alliance (DLNA) specification which is different from that of the HDMI standard, in which when the display device which displays a content list requested by a user is determined to be a device capable of transmission and reception using the communication means, based on at least one of the reproduction device identification information stored in the display device storage unit and the display device identification information stored in the reproduction device storage unit, the reproduction device transmits all of the content lists stored in the content list storage unit to the display device by way of the HDMI cable, in which when the display device that displays the content list requested by the user is determined not to be the device capable of transmission and reception using the communication means, based on at least one of the reproduction device identification information stored in the display device storage unit and the display device identification information stored in the reproduction device storage unit, the reproduction device transmits only the content list or lists capable of being sent out according to the DLNA specification from all of the content lists stored in the respective content list storage unit to the display device by way of the network, in which the display device has a digital media player (DMP) function in accordance with the DLNA specification so as to be a DMP display device, a respective one of the reproduction devices has a digital media server (DMS) function in accordance with the DLNA specification and is connected to the DMP display device by the DLNA network and is not connected to the DMP display device by the HDMI cable so as to be a first DMS reproduction device, and another respective one of the reproduction devices is connected to the DMP display device by the HDMI cable so as to be a second reproduction device, and in which a first content list from the first DMS reproduction device is displayable on the DMP display device simultaneously with a second content list from the second reproduction device without the user having to perform a switching operation involving an input to the DMP display device.