摘要:
Disclosed herein is an improvement in a filter of the type having a plurality of filtering plates vertically spaced at fixed intervals to interpose filtering spaces therebetween and as many scrapers laid outwardly from the axis of the stack of filtering plates and inserted one each into the filtering spaces, i.e. between the adjacent filtering plates, the improvement which includes giving each filtering plate a perfectly circular periphery so as to avoid formation of any protuberance from the circumferences and, at the same time, disposing the scrapers so as to keep sliding contact with the adjacent filtering plates.
摘要:
A fuse includes a first conductor, an insulating film on the first conductor, a second conductor on the insulating film, a first plug coupled to the first conductor, a second plug and a third plug each coupled to the second conductor, and a cover film formed on the second conductor and having tensile strength.
摘要:
The present invention provides a semiconductor memory device which reduces current consumption in a standby state owing to a suitable refresh-thinning-out function, and a refresh control method thereof. When the refresh-thinning-out function is added while a refresh operation and an external access operation are being executed independently of each other, a refresh address counter outputs a refresh address Add(C) and inputs predetermined high-order bits thereof to a refresh-thinning-out control as a high-order refresh address Add(C) (m), where judgment as to whether the refresh operation is performed, is made. A refresh permission signal RFEN corresponding to the result of judgment is inputted to a word driver to activate and control the word driver. The process of judgment by the refresh-thinning-out control circuit can be embedded in an access time of a row system.
摘要:
The present invention provides a semiconductor memory device which reduces current consumption in a standby state owing to a suitable refresh-thinning-out function, and a refresh control method thereof. When the refresh-thinning-out function is added while a refresh operation and an external access operation are being executed independently of each other, a refresh address counter outputs a refresh address Add(C) and inputs predetermined high-order bits thereof to a refresh-thinning-out control as a high-order refresh address Add(C) (m), where judgment as to whether the refresh operation is performed, is made. A refresh permission signal RFEN corresponding to the result of judgment is inputted to a word driver to activate and control the word driver. The process of judgment by the refresh-thinning-out control circuit can be embedded in an access time of a row system.
摘要:
An object is to provide a semiconductor device in which it is possible to determine whether or not a minute delay time given by a delay circuit is within a specified value or not, and a method of testing the semiconductor device. In response to a data strobe signal TDQS for testing, the delay circuits DC0 and DC1 produce delay data strobe signals IDQS0 and IDQS1 delayed by delay times DT0 and DT1. Outputted as a reverse signal from the inverter INV0, is a reverse data strobe signal RIDQS0 in response to the delay data strobe signal IDQS0, and delayed by an allowable delay time IT. Inputted into the NAND gate ND0, are the reverse data strobe signal RIDQS0 and the delay data strobe signal IDQS1. When, in comparison with the phase of the delay data strobe signal IDQS0, the phase of the delay data strobe signal IDQS1 is delayed by the allowable delay time IT or more, a pulse signal PL0 is not outputted from the NAND gate ND0.
摘要:
There is disclosed a liquid crystal display apparatus including a main body and a swivel mechanism, where the main body is capable of smoothly swiveling. A countersunk hole is formed in a bottom plate member as follows: When a through-hole for inserting a screw is formed in a metal sheet to be a bottom plate member, there is also concurrently formed an accommodating hole for accommodating flow of the material forming the metal sheet upon plastic forming or pressing which is performed subsequently for forming a countersink, and then the countersink is formed at an open end of the through-hole by pressing. It is preferable that a plurality of the accommodating holes are formed around the through-hole.
摘要:
A volatile memory has a volatile additional area for storing an error correction code for a nonvolatile memory. Data stored in the nonvolatile memory are transferred to the volatile memory together with the error correction code without making an error correction. Thus, data transfer time from the nonvolatile memory to the volatile memory can be shortened. As a result, it is possible to shorten the time from beginning of the data transfer from the nonvolatile memory to the volatile memory to a point at which data becomes accessible.
摘要:
The present invention provides a semiconductor memory device which reduces current consumption in a standby state owing to a suitable refresh-thinning-out function, and a refresh control method thereof. When the refresh-thinning-out function is added while a refresh operation and an external access operation are being executed independently of each other, a refresh address counter outputs a refresh address Add(C) and inputs predetermined high-order bits thereof to a refresh-thinning-out control as a high-order refresh address Add(C) (m), where judgment as to whether the refresh operation is performed, is made. A refresh permission signal RFEN corresponding to the result of judgment is inputted to a word driver to activate and control the word driver. The process of judgment by the refresh-thinning-out control circuit can be embedded in an access time of a row system.
摘要:
A method of testing an electronic device including first and second semiconductor devices connected to each other with a plurality of bus lines. First, the first semiconductor device supplies a selected one of the bus lines with a first logical output signal. Then, the second semiconductor device acquires a first bus line signal from the selected bus line. The second semiconductor device inverts the first bus line signal to generate a second logical output signal. The second semiconductor device transmits the second logical output signal to the first semiconductor device. The first semiconductor device receives a second bus line signal from the selected bus line. The first semiconductor device compares the first logical output signal and the second bus line signal to detect a connection between the first semiconductor device and the second semiconductor device.
摘要:
A liquid crystal display apparatus including a tilt mechanism, which is capable of preventing an inadvertent insertion of a finger of a user in a groove of a bracket of the tilt mechanism even while a cover for concealing the bracket is removed, wherein provided is a washer-like member or inadvertent-insertion preventer which has a through-hole or perforated portion through which a pawl formed in a mainbody bracket or one of two brackets is inserted, and is attached to the pawl at a position to contact a stand bracket or the other of the two brackets, by inserting the pawl through the through-hole. The washer-like member is preferably made of a plastic and sandwiched between the two brackets.