CPC Class H04N

An apparatus for receiving a broadcast signal, the apparatus includes a tuner configured to receive a broadcast signal; and a hardware processor configured to: process the broadcast signal to output a link layer packet, decapsulate the link layer packet to output a plurality of output packets comprising service data for a broadcast service, and decode the output packets to output the service data for the broadcast service, wherein the link layer packet includes a header and a payload including the service data of the output packets, wherein the header includes a base header having a first length field, wherein the header further includes an additional header for concatenation and the payload includes concatenated output packets, the additional header includes a second length field, and a concatenation of the first length field and the second length field indicates a total length of the payload.

The invention provides method, apparatus and electronic device for integrating multifunctional services. The method includes assigning users with corresponding user identification numbers in an interactive application platform; responding to the login operation of the user based on the user identification number, and displaying the personal homepage of the user after login is successful; after detecting a click operation of the user on the audio and video communication label, entering an audio and video communication interface; and when the user identification number of another user input by the user on a dialing sub-interface is received, initiating a communication request to the another user based on the user identification number, or when the click operation on a communication key arranged on the audio and video communication interface is detected, initiating a communication request to another user to which the communication key corresponds.

A streaming system includes an authoring unit, a stream server and a client terminal. The authoring unit generates a file composed of encrypted contents data and the ancillary information at least containing the packetizing control information for generating an RTP packet, a non-encrypted codec dependent header made up of the information pertinent to encoded contents data, and the encryption information for decrypting the encrypted contents data form packet to packet. The streaming server packetizes the encrypted contents data along with at least the codec dependent header and distributes the resulting data as a stream. The client terminal refers to the codec dependent header of the received packet, re-assembles the packet, and decrypts the encrypted contents data of the re-assembled packet to generate contents data.