초록 ▼

An in-flight entertainment system provides live video/audio programming to passengers and operators over an aircraft video/audio distribution system. The programming signals are derived from satellite broadcast signals that may be in either circular polarized form or linear polarized form. The broad

An in-flight entertainment system provides live video/audio programming to passengers and operators over an aircraft video/audio distribution system. The programming signals are derived from satellite broadcast signals that may be in either circular polarized form or linear polarized form. The broadcast signals are collected by two probes and extracted as right and left circular polarized signals. The right and left circular polarized signals are converted into either circular or linear polarized IF signals, and the IF signals are processed by a receiver/decoder unit to produce the live video/audio programming signals.

대표청구항 ▼

An in-flight entertainment system provides live video/audio programming to passengers and operators over an aircraft video/audio distribution system. The programming signals are derived from satellite broadcast signals that may be in either circular polarized form or linear polarized form. The broad

An in-flight entertainment system provides live video/audio programming to passengers and operators over an aircraft video/audio distribution system. The programming signals are derived from satellite broadcast signals that may be in either circular polarized form or linear polarized form. The broadcast signals are collected by two probes and extracted as right and left circular polarized signals. The right and left circular polarized signals are converted into either circular or linear polarized IF signals, and the IF signals are processed by a receiver/decoder unit to produce the live video/audio programming signals. n in a summarized table. 7. A program information broadcasting system according to claim 1, wherein said means for transmitting said master data and said program basic information is arranged to transmit said master data and said program basic information at cycles that are different from each other. 8. A program information broadcasting system according to claim 7, wherein said means for transmitting said master data and said program basic information is arranged to transmit said master data at a longer cycle than said program basic information. 9. A program information broadcasting system according to claim 1, further comprising: means for preparing program extended information by deleting the data used for preparation of the program basic information from the master data; and means for linking the program basic information with the program extended information; wherein said means for transmitting is arranged to transmit said program basic information and said program extended information simultaneously with the transmitting of programs. 10. A program information broadcasting system according to claim 1, further comprising means for preparing mail, and the means for preparing said mail is arranged to broadcast mail from the broadcasting center in addition to transmission of the program information, and said mail is linked to said program information so that the receiving terminal unit can gain access to the linked data of the program information from the received mail. 11. A program information broadcasting system according to claim 10, further comprising means for preparing voting and questionnaire data related to a call function to enable viewers to participate in voting or questionnaire and the voting and questionnaire data are incorporated in the mail to be transmitted. 12. A program information broadcasting system according to claim 11, wherein the means for transmitting is arranged to broadcast a summarized table of mails, and further comprising means at the terminal unit for checking whether the items listed in the summarized table of mails have been already read or not, and means for displaying only the mails not yet read. 13. A program information broadcasting system according to claim 11, wherein the means for transmitting is arranged to transmit an e-mail together with some receiving condition, and means are provided at the terminal unit for checking whether the user of the terminal unit satisfies said receiving condition or not, and the e-mail is displayed only when the user satisfies the receiving condition. 14. A broadcasting device, comprising: program information data preparing means for dividing program elements, constituting a broadcasting program, into a plurality of items and turning them into data and for preparing a master data list of program information that is adapted to recognize the program; information retrieval means for retrieving minimal necessary items for preparation of a program guide from the master data list; program basic information preparing means for preparing program basic information using said minimal necessary items obtained by said information retrieval means, said program basic information including extracted items of all programs included in said master data so that the amount of data in said program basic information is substantially smaller than the amount of data in said master data; transmission data generating means for converting said master data and said program basic information to transmittable data; and transmitting means for transmitting said transmittable data. 15. A broadcasting device according to claim 14, wherein there are further provided mail data preparing means separately arranged from said program information data preparing means and used for preparing mail data, and transmission information data base means for integrating the program information data with the mail data and sending to the transmission data generating means. 16. A broadcasting device according to claim 15, wherein said transmission information data base means is arranged to send the integrated data of the program information data and the mail data to the information retrieval means. 17. A broadcasting device according to claim 15, further comprising: voting and questionnaire data preparing means for preparing voting and questionnaire data and for sending the voting and questionnaire data to the program information data preparing means; voting data receiving means for receiving voting data including replies from subscribers to questionnaire(s); and voting data processing means for processing the received voting data. 18. A broadcasting device according to claim 17, wherein said voting and questionnaire data preparing means is arranged to send the prepared voting and questionnaire data to the mail data preparing means. 19. A receiving terminal unit, comprising: receiving means for receiving a master data list of a broadcast program information; program basic information preparing means for extracting a minimal number of items necessary for preparation of a program guide from the received master data, and for preparing a program basic information, said program basic information including extracted items of all programs included in said master data so that the amount of data in said program basic information is substantially smaller than that of said master data; storage means for storing data of said program basic information; data reproducing means for reproducing data of the received program information and the program basic information; and control means for controlling various types of operations, whereby: when an instruction to display program information is inputted, said control means receives the master data of said program information, and prepares a summarized table of the programs by reading program basic information from said storage means. 20. A receiving terminal unit according to claim 19, wherein said program basic information is prepared by extracting information with a higher utilization frequency from said master data. 21. A receiving terminal unit according to claim 19, wherein said program basic information is prepared by extracting data based on predetermined attributes from the master data of the program information. 22. A receiving terminal unit according to claim 21, wherein said attributes serving as basis for preparation of the program basic information are related to at least one of program category, individual information or service provider. 23. A receiving terminal unit according to claim 22, wherein said plurality of types of program basic information are prepared as many as related to said attributes. 24. A receiving terminal unit according to claim 23, wherein said plurality of program basic information comprise data, which are prepared by turning the attributes serving as basis for preparation of said program basic information to key code and are arranged in a summarized table and data prepared by arranging identification information of the program extracted using said attributes as basis in a summarized table, and said data prepared by turning said attributes to key code and arranged in a summarized table are linked to the data prepared by arranging the identification information in a summarized table. 25. A program information broadcasting method, comprising the steps of: preparing a master data of program information for recognizing a broadcast program wherein program elements of said broadcasting program are divided into a plurality of items and wherein said items are converted to data at a broadcasting center; preparing a program basic information list, comprising a minimal number of items that are necessary for the preparation of a program guide, that are extracted from said master data, said program basic information including extracted items from all programs included in said master data so that the amount of data in said program basic