摘要:
A clock diagnosis circuit includes: a delay circuit to delay the clock by a prescribed time which is not more than the clock pulse width; an integral multiplication delay circuit to delay a delayed clock outputted from the delay circuit by a prescribed number of cycles; a first exclusive OR circuit to encode the clock using the delayed clock; a second exclusive OR circuit to decode an output of the first exclusive OR circuit using an output of the integral multiplication delay circuit; and a comparison circuit to compare the clock with an output of the second exclusive OR circuit to thereby detect a malfunction of the clock.
摘要:
The embodiments provide a failure diagnosis method for a main memory in an information processing device equipped with a write-back cache. According to the method, an application program stored in the main memory is divided by the storage size of write-back cache, and the regions are stored in advance. Then, a read signal from the main memory to the write-back cache is detected. It is determined whether the region corresponding to the read signal has yet to be diagnosed. If the region has yet to be diagnosed, a command to diagnose failure of the region is issued. If a write signal (write back) to a particular region is detected during the diagnosis of the particular region, the diagnosis of the particular region is stopped. Thus, the failure diagnosis of the main memory is executed in parallel with the execution of the application program.
摘要:
A redundancy control system and method of transmitting computational data are provided, for detection of transmission errors and failure diagnosis, including generating first computational data and generating first generated data using a first generation algorithm for error detection; generating second computational data and generating second generated data using a second generation algorithm for error detection; comparing the first/second computational data; transmitting transmission data including coincident computational data and the first/second generated data; generating, in the receiving device, computational data and third/fourth generated data from preset first/second generation algorithms; and comparing the first/third generated data and the first/third generated data, and detecting the presence or absence of an error in the received computational data.
摘要:
A method of transmitting computational data comprising: a step of generating first computational data and generating first generated data using a first generation algorithm for error detection on return; a step of generating second computational data and generating second generated data using a second generation algorithm for error detection; a step of mutually comparing the first/second computational data; a step of transmitting transmission data including coincident computational data and first/second generated data; in the receiving device, a step of generating computational data and third/fourth generated data from preset first/second generation algorithms; and a step of comparing the first/third generated data and the first/third generated data, and detecting error in the received computational data.
摘要:
In one embodiment, an image encoding apparatus converts bit depth of an input image formed of a plurality of pixels each having an N bit depth into an (N+M) bit depth larger than N bit depth by M bits. An adaptive bit depth converter converts the bit depth of each pixel of the decoded image of the (N+M) bits into the N bits selectively using one of a plurality of conversion systems. The converted image of the N bit depth is stored in a frame memory as a reference image. The bit depth of each pixel of the reference image of the N bit depth read out from the frame memory is converted into the (N+M) bit depth larger than the N bit depth by M bits in accordance with the conversion system by a pixel bit depth inverse converter.