Video display apparatus
First Claim
1. A video display apparatus for communicating with first and second external controllers, wherein at least two communication modes exist between said video display apparatus and said first and second external controllers, said video display apparatus comprising:
- microcontroller means for receiving commands from said first and second external controllers;
first non-volatile memory means for storing data relating to said video display apparatus;
first bus line means for connecting said first external controller with said microcontroller means and said first non-volatile memory means;
backup second non-volatile memory means for storing a same data relating to said video display apparatus as that stored in said first non-volatile memory means; and
internal bus line means for connecting said backup second non-volatile memory means with said microcontroller means, whereinsaid data stored in said backup second non-volatile memory means is read by one of said first and second external controllers by way of said microcontroller in a backup mode of said at least two communication modes, andsaid data stored in said first non-volatile memory means is read directly by said first external controller in a second mode of said at least two communication modes.
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Abstract
A video display apparatus capable of communicating with an external controller includes a microcontroller for receiving commands from an external controller, a first non-volatile memory for storing data relating to the video display apparatus, first bus line for connecting the external controller with the microcontroller and the first non-volatile memory, a second non-volatile memory for storing the same data that is stored in the first non-volatile memory, and second bus lines for connecting the second non-volatile memory with the microcontroller.
48 Citations
9 Claims
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1. A video display apparatus for communicating with first and second external controllers, wherein at least two communication modes exist between said video display apparatus and said first and second external controllers, said video display apparatus comprising:
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microcontroller means for receiving commands from said first and second external controllers; first non-volatile memory means for storing data relating to said video display apparatus; first bus line means for connecting said first external controller with said microcontroller means and said first non-volatile memory means; backup second non-volatile memory means for storing a same data relating to said video display apparatus as that stored in said first non-volatile memory means; and internal bus line means for connecting said backup second non-volatile memory means with said microcontroller means, wherein said data stored in said backup second non-volatile memory means is read by one of said first and second external controllers by way of said microcontroller in a backup mode of said at least two communication modes, and said data stored in said first non-volatile memory means is read directly by said first external controller in a second mode of said at least two communication modes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification
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- Resources
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Current AssigneeSony Corporation (Sony Group Corp.)
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Original AssigneeSony Corporation (Sony Group Corp.)
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InventorsYagi, Yoko, Narui, Yoshihisa, Ouchiyama, Motoki
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Primary Examiner(s)Tung, Kee M.
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Application NumberUS08/744,753Time in Patent Office944 DaysField of Search345/132, 345/507-509, 345/10, 345/204, 345/11, 345/501, 345/511, 345/508, 345/502US Class Current345/536CPC Class CodesG09G 2370/047 using display data channel ...G09G 5/006 Details of the interface to...
