Abstract:
A shift register (30) or other electronic drive circuit (20, 30) for an LCD or other active matrix device (10) includes a series of circuit blocks (30A, 30B, etc) each having redundancy in the form of parallel circuit paths (31 and 32). When the circuit is turned on, self-testing and redundancy selection is carried out by individual test and control arrangements (34) which are associated with the blocks (30A, 30B, etc). The test and control arrangements (34) may comprise memory elements, such as a bistable, which electrically programme themselves in response to their electrical testing of the paths so as to generate a control signal at an output coupled to one or more switches (33). The switches (33) control which of the parallel circuit paths provides an output (23) to the active matrix device (10). Each test and control arrangement (34) also comprises a routing circuit controlled by the control signal, for transmitting the correct serial output of that block to all serial input of next block.
Abstract:
Der Anmeldungsgegenstand betrifft eine seriell arbeitende Speichervorrichtung mit einer Speichermatrix (SM), einer Zeilenauswahleinrichtung (ZPTR) und einer Spaltenauswahleinrichtung (SPTR, SCH), die so geartet sind, daß bei fehlerhaften Zeilen oder Spalten lediglich korrigierbare Einzelfehler oder Fehler von wenigen aufeinanderfolgenden Bits auftreten. Diese Speichervorrichtung bietet insbesondere für Nur-lese-Speicher (ROM's) Vorteile, da hierbei, wegen den bereits bei der Herstellung festgelegten Speicherinhalten, nicht Ersatzzeilen bzw. -spalten vorgesehen werden können.
Abstract:
A matrix display apparatus includes an addressing circuit for addressing pixels of the display by means of row-address conductors. The addressing circuit includes a shift register having successive stages coupled to the pixels through respective buffer devices which are electrically connected in the row-address conductors. In order to circumvent defects which would prevent a timing pulse from propagating through individual stages of the shift register, a number of spare shift-register stages are distributed along the length of the shift register. The spare stages can be connected in place of defective stages of the shift register via a pair of reparative conductors which insulatively cross the row-address conductors. Spare buffer devices are similarly provided.
Abstract:
Dispositif d'affichage avec une pluralité de lignes de sélection incluant des balayeurs redondants de lignes de sélection. Chaque balayeur inclut une pluralité d'étages équivalents dotés d'une borne d'entrée et d'une borne de sortie. Les étages et les lignes de sélection sont numérotés dans l'ordre et les étages de numéros correspondants sont connectés aux extrémités opposées des lignes de sélection de numéros correspondants par des segments de ligne séparée. Les étages dans chaque balayeur sont mis en cascade par connexion de la borne de sortie de chaque étage à la borne d'entrée de l'étage suivant immédiatement. Les balayeurs de lignes de sélection peuvent fonctionner indépendamment par la fourniture d'alimentations électriques et de générateurs de signaux d'horloge séparés. Pendant le test, on fait paraître l'un des balayeurs comme une impédance élevée vis-à-vis du balayeur en cours de test. Les étages défectueux d'un balayeur sont remplacés par l'étage de muméro correspondant de l'autre balayeur en coupant simplement le segment de ligne séparée de l'étage défectueux.
Abstract:
A memory system includes a data storage matrix (11) having columns and rows and a redundant storage matrix having at least one column. The columns of the storage matrix are addressed by column addresses (B0-B7) each defining a logical column address for a data bit of a row and corresponding to a predetermined physical column of the storage matrix. The storage matrix is readable in parallel, the parallel read data being serially presented to an output port in a sequence determined by the physical order of the columns of the storage matrix. Column redundancy logic, response to a column address corresponding to a defective physical column of the storage matrix, stores a data bit in a column of the redundant storage matrix (31). Redundancy control logic (25, 30, 32, 33, 34) response to the column redundancy logic operates on data parallel read from the storage matrix by column addressing, to insert the data bit stored in the redundant column between the data bits read from the data storage matrix according to its logical column address.
Abstract:
A bubble memory device of the word organised, fault tolerant type comprises a number of bubble memory chips (12-26) equivalent in number to a given word size, a correction bit bubble memory chip (28), a Programmable Read Only Memory (74) responsive to input addresses for identifying defective bit locations in the bubble memory chips, an address register (70) providing addresses to the PROM (74) and a decoder (78) substituting, in reading and writing operations, correction bits from the correction bit bubble memory chip (28) for bits in any one of the bubble memory chips in response to output signals from the PROM (74) identifying a defective bit location.
Abstract:
A shift register unit, a gate line driving device includes multiple stages of the shift register units, and a driving method for being applied to the shift register unit; the shift register unit includes: an input module (200) connected between an input terminal (INPUT) and a pull-up node (PU), and configured to charge the pull-up node (PU); an output module (205) connected between the pull-up node (PU), a first clock signal terminal (CK) and an output terminal (OUTPUT), and configured to output to the output terminal (OUTPUT) a first clock signal received at the first clock signal terminal (CK); a pull-up node reset module (215) connected between a reset terminal (RESET-IN), a pull-down node (PD) and the pull-up node (PU), and configured to reset the pull-up node (PU); and an output reset module (220) connected between a second clock signal terminal (CKB), the pull-down node (PD) and the output terminal (OUTPUT), and configured to reset the output terminal (OUTPUT). The shift register unit, a gate line driving device and a driving method can downsize an overall structure of the GOA, reduce power consumption, decrease signal delay, improve signal waveform, and also enhance reliability of the GOA circuit in entirety.
Abstract:
A non-volatile resistive memory is provided. The memory includes at least one non-volatile memory cell and selection circuitry. Each memory cell has a two-terminal nanotube switching device having and a nanotube fabric article disposed between and in electrical communication with conductive terminals. Selection circuitry is operable to select the two-terminal nanotube switching device for read and write operations. Write control circuitry, responsive to a control signal, supplies write signals to a selected memory cell to induce a change in the resistance of the nanotube fabric article, the resistance corresponding to an informational state of the memory cell. Resistance sensing circuitry in communication with a selected memory cell, senses the resistance of the nanotubc fabric article and provides the control signal to the write control circuitry. Read circuitry reads the corresponding informational state of the memory cell. A non-volatile latch circuit and a non-volatile register file configuration circuit for use with a plurality of non-volatile register files are also provided.