LSI with interpretive function and information recording/reproducing equipment using it
A device, interpretation and execution technology, applied in the direction of digital recording/reproduction, program control using stored programs, data recording, etc., which can solve the needs of content leakage, inability to use optical disc devices, modifying specifications and adding functions that cannot be easily Satisfaction etc.
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Embodiment 1
[0051] figure 1 An optical disc device 100 according to Embodiment 1 of the present invention is shown.
[0052] The optical disc device 100 includes an execution part 120, which is used to execute an interpretation and execution program capable of interpreting an intermediate code, so as to generate a control command string; and a control part 121, which is used to control the optical disc 114 according to the generated control command string. recording / reproduction of information on
[0053] The execution device 120 includes a RAM 103 for storing an intermediate code 108 ; a ROM 104 for storing the interpretation and execution program 106 capable of interpreting the intermediate code 108 ; and a CPU 102 for controlling the execution of the interpretation and execution program 106 . The RAM 103, ROM 104 and CPU 102 are formed on one chip and function as one LSI. Moreover, the execution device 120 may include a system micro-control computer 105 for controlling the entire opt...
Embodiment 2
[0096] Next, an LSI according to Embodiment 2 of the present invention and an optical disc apparatus using the LSI are described.
[0097] Figure 11 An LSI 1101 according to Embodiment 2 of the present invention is shown. The structure of the LSI 1101 according to Embodiment 2 is basically the same as that of the LSI 101 used in the optical disc apparatus 100 according to Embodiment 1. The same reference numerals designate the same elements, and their descriptions are omitted.
[0098] In the LSI 1101 of Embodiment 2, a RAM 103 has an accessible RAM area 1104 which can be accessed by a system control microcomputer, and an inaccessible RAM area 1105 which cannot be accessed by the system control microcomputer. In Embodiment 2, a previously encrypted intermediate code 1102 is stored in the accessible RAM area 1104, and the encrypted intermediate code 1102 is decrypted in the first step. The decrypted intermediate code is stored in the inaccessible RAM area 1105 as a decrypte...
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