Digital receiver and controlling method thereof
First Claim
1. A digital receiver, comprising:
- a memory card storing a main program;
a memory;
a central processing unit controlling operations of the digital receiver and the memory;
a memory card interface electrically coupling the memory card and the central processing unit; and
a key input unit receiving a control command from a user and outputting a key signal to the central processing unit to control the memory card to directly download the main program from the memory card to the memory.
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Accused Products
Abstract
A method and apparatus to download a main program from a memory card in a digital receiver. The digital receiver includes a central processing unit, a memory, a memory card interface, and a key input unit. The method executes a boot program to initialize the digital receiver, detects a memory card insert signal triggering a search of a file having an predetermined file extension in the memory card through the memory card interface, reads and stores the file in an auxiliary memory, reads a header of the file read having the predetermined extension, determines whether the file read is the main program, downloads the main program to the memory, and determines whether the main program is downloaded by checking information of the file recorded in the header and a capacity of the main program recorded in the memory.
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Citations
19 Claims
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1. A digital receiver, comprising:
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a memory card storing a main program;
a memory;
a central processing unit controlling operations of the digital receiver and the memory;
a memory card interface electrically coupling the memory card and the central processing unit; and
a key input unit receiving a control command from a user and outputting a key signal to the central processing unit to control the memory card to directly download the main program from the memory card to the memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of downloading a main program from a memory card in a digital receiver, wherein the digital receiver comprises a central processing unit, a memory, a memory card interface, and a key input unit, the method comprising:
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executing a boot program to initialize the digital receiver;
detecting a memory card insert signal triggering a search of a file having a predetermined file extension in the memory card through the memory card interface;
reading and storing the file in an auxiliary memory;
reading a header of the file read having the file extension and performing a checksum;
determining whether the file read is the main program;
downloading the main program to the memory; and
determining whether the main program is downloaded by checking information of the file recorded in the header and a capacity of the main program recorded in the memory. - View Dependent Claims (14)
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15. A method of downloading a main program from a memory card in a digital receiver using a data control unit (DCU) or a serial communication, wherein the digital receiver comprises a central processing unit, a memory, a memory card interface, and a key input unit, the method comprising:
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executing a boot program;
receiving a memory card selection key signal to download a main program directly from the memory card through the memory card interface, wherein the memory card selection key signal is set by an input signal from the key input unit;
downloading the main program from the PC through the DCU when the memory card selection key signal is not input;
downloading the main program from the PC through the serial communication when the DCU is unavailable and the memory card selection key signal is not input;
storing the main program in the memory;
re-booting the system through a reset; and
executing the main program. - View Dependent Claims (16, 17, 18, 19)
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Specification