Patent ID: 9307272
Filing Date: 2016-04-05
CPC Classification: H04N

Claim Text:
1. A purchase transaction method for purchasing an Internet Protocol Television (IPTV) product, the method comprising: receiving an Electronic Program Guide (EPG) metadata including a program information table and a purchase information table, wherein the EPG metadata has a level which is determined based on an amount of the EPG metadata, wherein a type of the level comprises list level, lightweight level, and full level, wherein information on the list level has a list of contents for rapid information acquisition, wherein information on the lightweight level is configured according to a terminal, wherein the information on the list level and the information on the lightweight level have more restricted information than information on the full level, wherein the program information table includes a purchase list element including a purchase list reference element, wherein the purchase list reference element includes a first offering identifier, wherein the purchase information table includes a purchase information element, and wherein the purchase information element includes a flag indicating whether viewer will be able to suspend viewing of a program and resume viewing of the program later without additional charge; transmitting, to a purchasing server, the first offering identifier to request to make a purchase for an offering, wherein the offering is a combination of one or more products to be purchased and purchase terms for the products, wherein the first offering identifier is a globally unique identifier that identifies a combination of the product to which the purchase list element is attached and purchase terms of the purchase information element referenced by the purchase list reference element; and receiving, from the purchasing server, a response returned from the request to indicate success or failure of the requested purchase.