CPC Class H04N

To be able to achieve shorter communication cycles, the invention proposes a communication system which is able to connect field devices to a higher-order control device. For this purpose, a connection device is provided which is connectable to a higher-order control device via a transmission medium. The connection device has at least one first port and at least one second port, to each of which a field device may be connected. The connection device has at least one functional device which is switchable between at least one first port and at least one second port. The functional device is designed to generate output data intended for the second port in response to the input data arriving at the first port.

The present disclosure relates to a method and an apparatus for displaying health data collected by a wearable device. The method may include acts performed by the wearable device: collecting health data of a user; establishing a wireless connection with a home media playing device; and sending the health data to the home media playing device through the wireless connection for display. The wearable device includes: a data collection module, a connection establishing module and a data sending module. By collecting health data of a user, establishing a wireless connection with a home media playing device, sending the health data to the home media playing device through the wireless connection, and displaying the health data by the home media playing device, the user operation is simplified, and the utilization efficiency is improved.

A display apparatus transmits a picture acquisition request for getting picture information to an external image apparatus connected through a predetermined interface to the display apparatus from the external image apparatus at predetermined intervals and gets a plurality of pieces of picture information from the external image apparatus to be displayed. The plurality of pictures may be switched at predetermined intervals, for example, to be displayed, so that the plurality of pictures may be displayed in a so-called slide show manner. A plurality of pictures for thumbnail may be produced from the plurality of pieces of picture information and be arranged together to be displayed in one picture screen of a display device.