摘要:
When coding user data, it may be desirable to mark user data as invalid. This may arise, by way of example, in applications in which a stored data item needs to be updated by virtue of an updated data item additionally being stored and the old stored data item being marked as invalid. In order to mark the invalidity of a stored data item by means of the value of the data item and to be able to apply an error-recognizing or error-correcting coding dependably, the user data are extended by supplementary data and the coding is applied to the extended user data.
摘要:
An apparatus for comparing pairs of binary words includes an intermediate value determiner and an error detector. The intermediate value determiner determines an intermediate binary word so that the intermediate binary word is equal to a reference binary word for a first pair of equal or inverted binary words, so that the intermediate binary word is equal to the inverted reference binary word for a second pair of equal or inverted binary words and so that the intermediate binary word is unequal to the reference binary word and the inverted reference binary word for a pair of unequal and uninverted binary words, if the intermediate value determiner works faultlessly. Further, the error detector provides an error signal based on the intermediate binary word so that the error signal indicates whether or not the binary words of a pair of binary words are equal or inverted.
摘要:
The invention proposes a valve train (1) of an internal combustion engine (2), said valve train (1) comprising a support element (10) and a finger lever (5) or a rocker arm for operating a gas exchange valve, said finger lever (5) or rocket arm comprising a joint socket (8) comprising a semispherical portion (12) for mounting the finger lever (5) or rocker arm on a joint head (9) of the support element and further comprising, adjacent to the semispherical portion, a depression (13) from which a spray bore (20) starts to extend through the joint socket. This spray bore (20) is in hydraulic communication with a supply bore (19) that extends through the joint head. The invention provides a valve body (15a, 15b) that is arranged for displacement in the depression and comprises a projection (18), so that, in the closed position of the gas exchange valve, the spray bore and the supply bore are substantially or entirely separated hydraulically from each other by a snapping of the projection into the supply bore.
摘要:
A semiconductor memory device comprises a wordline (40), a first bitline (21a), two second bitlines (22a, 22b), a first memory cell (100a) and a second memory cell (100b). The first memory cell (100a) is coupled to the wordline (40), one of the second bitlines (22a) and the first bitline (21a). The second memory cell (100b) is coupled to the wordline (40), the other second bitline (22b) and the first bitline (21a). Each memory cell (100a, 100b) stores a first bit (101) and a second bit (102). The semiconductor device further comprises a programming unit (2) coupled to the wordline (40) and the first and the second bitlines (21a, 22a, 22b). The programming unit (2) enables to apply a first programming potential (V1) to the wordline (40) and to apply a third programming potential (V3) to the second bitlines (22a, 22b) while applying a second programming potential (V2) to the first bitline (21a) in order to program the first bit (101) of the second memory cell (100b) and the second bit (102) of the first memory cell (100a).
摘要:
The invention relates to an evaluation circuit for reading out the information stored in a memory cell, the current (read-out current) carried on a bit line (3) being assessed, the evaluation circuit (10) comprising a bit line decoder (2) and a precharge and converter circuit (4). In order to reduce the read-out duration particularly in the case of large scale integrated memory cells (1), a current source (6) is provided, which increases the read-out current (Imeas) by an offset current (Ioff).
摘要:
A programmable read-only memory and a method for operating the read-only memory are described. The memory contains at least one memory cell field with a plurality of memory cells, in addition to a plurality of memory segments formed of memory cells in which data and/or program parts can be stored. The memory further contains at least one redundant memory segment formed of memory cells and is assigned to one of the memory segments. The memory segment and the redundant memory segments assigned to the memory segment together form a memory block, in which all the memory segments have the same data content. At least one selection circuit for controlling the transfer of data and/or program parts to or from the memory segments of a memory block is assigned to each memory block.
摘要:
A circuit configuration for a programmable nonvolatile memory having memory cells organized in rows and columns, includes a programming circuit which contains a first device for testing purposes that applies a programming current to a first predetermined number of memory cells in parallel for a first predetermined time period. During a second predetermined time period, the device thereupon connects a second predetermined number, which is greater than the first number, in parallel an applies the programming current to them. A method is provided for operating the circuit configuration.
摘要:
A circuitry is proposed for the correction of errors in a possibly erroneous binary word v′=v′1, . . . , v′n relative to a codeword v=v1, . . . , vn, in particular 3-bit errors containing an adjacent 2-bit error (burst error). The circuitry comprises a syndrome generator and a decoder. A modified BCH is used wherein n′ column vectors of a first BCH code submatrix are paired as column vector pairs so that a componentwise XOR combination of the two column vectors of each column vector pair produces an identical column vector K that is different from all column vectors of the first BCH submatrix. A second BCH submatrix comprises corresponding column vectors as the third power, according to Galois field arithmetic, of the column vector in the first BCH submatrix. The syndrome generated by the syndrome generator can be checked against the columns of the first and second submatrices.
摘要:
A variable focus lens has a housing (1) and an actuator (8) which are mutually displaceable along an optical axis (A) of the lens. A primary membrane (15) is arranged between a first chamber (24, 26) and a second chamber (30, 32), with the first and second chambers being filled with liquids of similar density but different indices of refraction. First and second auxiliary membranes (19, 17) are provided for volume compensation. The first auxiliary membrane (19) forms a wall section of the first chamber (24, 26), and the second auxiliary membrane (17) forms a wall section of the second chamber (30, 32), at least one or both of the auxiliary membranes facing environmental air at its outer side.
摘要:
A device includes a non-volatile memory and a control unit, wherein the control unit is configured to change over programming of data of the non-volatile memory from a first programming mode to a second, different programming mode based on the occurrence of a control signal.