Transmitter and receiver

Abstract

The present invention provides a transmitter capable of transmitting attribute information of a program while maintaining a high level of secrecy. Specifically, a transmitter ( 100 ) in a transmission and reception system comprising the transmitter ( 100 ) for transmitting program contents ( 21 ) and attribution information ( 22 ) of program and a receiver ( 200 ) for receiving the program contents ( 21 ) and accumulating part or whole of the program contents ( 21 ) transmits meaning information ( 24 ) indicating the meaning and contents of the attribute information ( 22 ) in addition to the attribute information ( 22 ).

1 . A transmitter in a transmission and reception system comprising: 
 a transmitter for transmitting a program and attribute information of the program to a receiver for receiving said program and accumulating part or whole of said program,    said transmitter transmitting at least one of meaning information indicating the meaning and contents of said attribute information and a function program for executing a function of accumulating part or whole of said program in addition to said program and said attribute information simultaneously or at different timing.    
     
     
         2 . A transmitter according to  claim 1  which further transmits a time of distribution of said program.  
     
     
         3 . A method of transmission in a transmission and reception system comprising a transmitter for transmitting a program and attribute information of the program and a receiver for receiving said program and accumulating part or whole of said program, said method including: 
 a step of transmitting said program,    a step of transmitting said attribute information, and    a step of transmitting meaning information indicating at least one of the meaning and contents of said attribute information and a function program for executing a function of accumulating part or whole of said program simultaneously or at different timing.    
     
     
         4 . A method of transmission according to  claim 3  further including a step of transmitting a time of distribution of said program.