DIGITAL RADIO BROADCAST TRANSMISSION USING A TABLE OF CONTENTS
First Claim
1. A method for transmission of a radio broadcast, the method comprising:
- creating a table of contents message, wherein the table of contents message includes information that identifies;
a service in a logical channel, andinformation for a receiver apparatus to limit decoding of broadcast data to a region in a frame of a logical channel; and
incorporating the table of contents message into a broadcast transmission, wherein the broadcast transmission includes a logical channel having a frame that includes broadcast data decoded by the receiver apparatus, whereby the table of contents message limits decoding of the broadcast data by the receiver apparatus to the region of the frame.
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Accused Products
Abstract
For each audio and data service, a table of contents (TOC) specifies which logical channel may carry data. The TOC may be transmitted over the NRSC-5 transmission system using a pre-defined protocol, which is received and decoded at an NRSC-5 receiver apparatus that extracts the TOC. When a user or an application requests a specific service from the receiver, the receiver logic may examine the TOC and may identify which LC may carry the requested service data. The receiver may only decode the LCs that are needed for the requested service, and may not decode other unneeded LCs thereby conserving power and memory.
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Citations
23 Claims
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1. A method for transmission of a radio broadcast, the method comprising:
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creating a table of contents message, wherein the table of contents message includes information that identifies; a service in a logical channel, and information for a receiver apparatus to limit decoding of broadcast data to a region in a frame of a logical channel; and incorporating the table of contents message into a broadcast transmission, wherein the broadcast transmission includes a logical channel having a frame that includes broadcast data decoded by the receiver apparatus, whereby the table of contents message limits decoding of the broadcast data by the receiver apparatus to the region of the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for operating a radio receiver, the method comprising:
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receiving a tuning request that selects a service in a physical radio channel; decoding a table of contents message incorporated within a radio broadcast transmission, wherein the table of contents message includes information for the radio receiver to limit decoding of broadcast data to a region in a frame of a logical channel; and demodulating and decoding only the selected service from a logical channel associated with the physical radio channel, wherein decoding of the selected service is based on the information in the table of contents message. - View Dependent Claims (9, 10)
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11. A method for selecting a service in a National Radio Systems Committee (NRSC) 5 standard transmission, the method comprising:
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receiving an NSRC-5 transmission at a receiver apparatus, the NSRC-5 transmission including broadcast data and a table of contents message that includes information identifying a service in a logical channel; decoding the table of contents message to; determine the logical channel that carries data belonging to the identified service, and retrieve information for the receiver apparatus to decode broadcast data in a region in a frame of the logical channel; and selecting a service from the NSRC-5 transmission. - View Dependent Claims (12, 13, 14)
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15. A radio receiver, comprising:
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a tuner that receives a National Radio Systems Committee (NRSC) 5 standard transmission, wherein the transmission includes a logical channel having a frame that includes broadcast data decoded by the radio receiver; and digital signal processing hardware that; extracts a table of contents message from the NRSC 5 standard transmission, wherein the table of contents message identifies; a service in a logical channel, and information for the radio receiver to limit decoding of broadcast data to a region in the frame of the logical channel; and selects a service from the NSRC 5 standard transmission; - View Dependent Claims (16, 17)
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18. A computer readable storage medium having embodied thereon a program, the program being executable by a processor to perform a method for transmission of a radio broadcast, comprising:
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creating a table of contents message, wherein the table of contents message includes information that identifies; a service in a logical channel, and information for a receiver apparatus to limit decoding of broadcast data to a region in a frame of a logical channel; and incorporating the table of contents message into a broadcast transmission, wherein the broadcast transmission includes a logical channel having a frame that includes broadcast data decoded by the receiver apparatus, whereby the table of contents message limits decoding of the broadcast data by the receiver apparatus to the region of the frame. - View Dependent Claims (19, 20)
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21. A computer readable storage medium having embodied thereon a program, the program being executable by a processor to perform a method for selecting a service in a National Radio Systems Committee (NRSC) 5 standard transmission, comprising:
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receiving an NSRC-5 transmission that includes broadcast data and a table of contents message, the table of content message including information that identifies a service in a logical channel; decoding the table of contents message to; determine the logical channel that carries data belonging to the identified service, and retrieve information for decoding broadcast data in a region in a frame of the logical channel; and selecting a service from the NSRC-5 transmission. - View Dependent Claims (22, 23)
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Specification