Abstract: In an encoded stream decoding device, a storage amount checking circuit confirms that a sufficient amount of stream has been stored in a buffer circuit. Thereafter, a control circuit starts repeatedly outputting a control signal to a decoding circuit to instruct the decoding circuit to perform a variable-length decoding process. If, by iterating the decoding process, the total amount of a consumed stream in the buffer circuit 11 is caused to be higher than or equal to a threshold set in a threshold setting circuit, a disabling circuit generates a decoding disable signal having a value of “1,” and outputs the decoding disable signal to the control circuit. When receiving the decoding disable signal, the control circuit outputs, to the decoding circuit, a control signal for instructing to stop the decoding process, so that the decoding circuit stops the decoding process.

Abstract: An external device access apparatus according to the present invention includes: an address control unit that accepts a prefetch request and a prefetch data readout request from a master and performs a prefetch operation and a prefetch data readout operation; a readout data storage unit that stores data read out through the prefetch operation; a storage operation status holding unit that holds a prefetch operation status indicating whether or not the prefetch operation has been completed; and an acceptance signal generation unit that outputs, to the master, an acceptance signal indicating that the prefetch data readout request has been accepted from the master. First information indicating a status of the prefetch operation is outputted to the master based on the prefetch operation status.

Abstract: A programmable logic circuit (100) includes a processor element (101) having: a logic cell (300) which can modify the function according to first setting information and generates data by performing a predetermined logic calculation on an input signal; a cross connect switch (301) for generating data by performing alignment, copying, and inversion of the data from the logic calculation means according to second setting information; and a memory control unit (201) which reads out the first or the second setting information from a memory device (102) according to branch setting information and supplies it to the logic calculation means and the data processing means for performing control. According to the first and the second setting information successively read from the memory device (102), each of unit logic circuits successively modifies a part or whole of the logic cell (300) and the cross connect switch (301) and performs a predetermined sequence circuit operation.

Abstract: A programmable logic circuit (100) includes a processor element (101) having: a logic cell (300) which can modify the function according to first setting information and generates data by performing a predetermined logic calculation on an input signal; a cross connect switch (301) for generating data by performing alignment, copying, and inversion of the data from the logic calculation means according to second setting information; and a memory control unit (201) which reads out the first or the second setting information from a memory device (102) according to branch setting information and supplies it to the logic calculation means and the data processing means for performing control. According to the first and the second setting information successively read from the memory device (102), each of unit logic circuits successively modifies a part or whole of the logic cell (300) and the cross connect switch (301) and performs a predetermined sequence circuit operation.