Abstract: A compound of the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are each lower alkyl, R.sup.4 is hydrogen or hydroxy, and a heavy solid line means a double bond when R.sup.4 is hydrogen and a single bond when R.sup.4 is hydroxy is useful in the treatment of diseases caused by reactive oxygen species and organic radicals.

Abstract: A transmission line driver circuit (10) includes a signal input (12). A first capacitor (28) stores a first voltage level corresponding to a first of two possible bit values of an input signal. A second capacitor (44) stores a second voltage level corresponding to a second of the possible bit values. First and second voltage supply sources (24, 42) are selectively and respectively coupled to the first and second capacitors (28, 44) for recharging these capacitors to their respective voltage levels. A transmission line (50) is coupled to an output of a switching circuit. The switching circuit is operable to couple the first capacitor (28) to the switching circuit output (34) in response to receiving an input signal of a first bit value. The switching circuit is further operable to couple the second capacitor (44) to the output (34) in response to receiving an input signal of a second bit value. The bit value is thereby propagated onto the transmission line (50).

Abstract: An insulated-gate field-effect transistor device characterized by the channel region consisting of the intermediate heavily doped portion (50; 72) and two lightly doped portions (46, 48; 74,76) provided on both sides of the heavily doped portion. Such a field-effect transistor device is advantageous in that it provides a surface potential locally increased to act as an energy barrier to minority carriers. This permits control over the threshold voltage of a MOS transistor or over the punch-through current of a punch-through transistor without having recourse to the use of a high carrier density throughout the channel region. The carrier density of the channel region being rather reduced, not only reduction in leakage current but improvement in withstand voltage characteristics can be achieved in a device according to the present invention.

Abstract: Semiconductor memory device including a dynamic memory array having a plurality of dynamic memory cells arranged in a matrix of rows and columns, write line and read line buffer memories disposed at the input and output of the dynamic memory array, and internal control circuitry including an internal refresh circuit and an internal arbiter circuit for determining relative priority as between write, read, and refresh request signals such that the internal refresh circuit is enabled to generate a refresh request signal for periodically applying a refresh signal to the dynamaic memory cells of the dynamic memory array without requiring an external control signal for implementation of the refresh request signal.

Abstract: The invention relates to a method of treating arteriosclerosis or pancreatitis comprising administering a compound of the formula: ##STR1## wherein A is ##STR2## R.sup.1 is quinolyl, R.sup.2 is hydrogen or lower alkyl,R.sup.3 is lower alkyl,X is hydrogen, halogen, hydroxy or lower alkyl,m is an integer 1 or 2, andn is an integer 1 to 4, or pharmaceutically acceptable salts thereof.

Abstract: A compound of the formula: ##STR1## wherein R.sup.1 is aryl optionally substituted with a substituent selected from the group consisting of halogen and halo(lower)alkyl; lower alkyl or cyclo(lower)alkyl; andR.sup.2 is hydrogen or lower alkyl, orR.sup.1 and R.sup.2 are taken together with the attached nitrogen atom to form a heterocyclic group optionally substituted with a substituent selected from the group consisting of lower alkyl and esterified carboxy,R.sup.3 is hydrogen or lower alkyl, andR.sup.4 is lower alkyl,and its pharmaceutically acceptable salt, a process for the preparation thereof and pharmaceutical composition comprising the same.

Abstract: The invention relates to dithioacetal compounds having 5-lipoxygenase-inhibiting activity, of the formula: ##STR1## wherein R.sup.1 is lower alkyl, di-(lower)alkylamino, aryl, or heterocyclic group which may have one or more substituents selected from halogen, lower alkyl, lower alkoxy and phenyl,R.sup.2 and R.sup.3 are each lower alkyl, aryl or ar-(lower)alkyl, or R.sup.2 and R.sup.3 are together to form 1,3-dithian ring,R.sup.4 is hydrogen or lower alkoxy, andn is O or an integer 1 to 4 and pharmaceutically acceptable salts thereof.

Abstract: A compound of the formula: ##STR1## wherein R.sup.1 -A- is a group of the formula: ##STR2## in which R.sup.1 is aryl or a heterocyclic group, each of which may be substituted with substituent(s) selected from the group consisting of lower alkyl, lower alkoxy, lower alkylthio, halo(lower)alkyl, acyl, acylamino and halogen, or lower alkyl which may be substituted with a heterocyclic group optionally substituted with acyl, andX is O or S, andR.sup.2 is hydrogen or lower alkyl, provided that when R.sup.1 is lower alkyl, thenR.sup.1 -A- is a group of the formula: ##STR3## in which R.sup.1 and X are each as defined above, processes for the preparation thereof and pharmaceutical composition comprising the same.

Abstract: An arbiter circuit providing priority control of dynamic memory operations as a memory access signal control circuit which regulates the order in which dynamic memory access signals, such as read, write and refresh signals, are executed in effecting particular operating functions of a dynamic memory. The arbiter circuit has a first circuit element to temporarily hold a given access signal or signals, a second circuit element to inhibit transfer of any access signal when another access signal is already being executed, a third circuit element to synchronize individual access signals that are generated asynchronously, and a fourth circuit element to reset arbiter circuit upon the end of each access signal. The memory access signals or request signals are queued as necessary according to a priority allocation such that a write request signal heads the priority list, followed by a refresh request signal and a read request signal in order.

Abstract: The invention relates to a cyclohexane derivative, useful as an angiogenesis inhibitor, of the formula: ##STR1## wherein R.sup.1 is halomethyl; or arylthiomethyl which may have amino, lower alkoxy or acylamino,R.sup.2 is lower alkoxy,R.sup.3 is ##STR2## or ##STR3## and R.sup.4 is hydrogen, lower alkylcarbamoyl, lower alkylcarbamoyloxy(lower)alkylcarbamoyl, heterocyclic carbonyl or heterocyclic carbamoyl, or salt thereof.

Abstract: Diseases caused by platelet activating factor are prevented and treated by administration to a subject of a therapeutically effective amount of a piperazine compound of the formula: ##STR1## wherein R.sup.1 to R.sup.4 are as defined in the specification.

Abstract: A method of employing a semiconductor memory system in the storage and readout of video signal data, wherein first and second FIFO memories are utilized in a tandem manner to perform video-related operations in a plurality of functional modes, such as a flicker free mode, picture-in-picture mode, teletext mode, multi-picture mode, stroboscopic mode and still picture mode.

Abstract: A synchronous circuit system comprises a switch circuit for receiving an asynchronous imput signal only within a specified period in response to a synchronizing signal, a latch circuit connected to the switch circuit, a signal transmission circuit connected to the output of the latch circuit and adapted for holding the logic state thereof as before until a necessary input level of the asynchronous input signal is reached, and a feedback circuit connected between the output of the latch circuit and the output of the switch circuit.

Abstract: A process for producing a 2-cephem or 3-cephem derivative compound of the formula: ##STR1## wherein R.sub.1 represents a substituted or unsubstituted amino radical and R.sub.4 represents hydrogen or a radical selected from the group consisting of carboxy, protected carboxy, ester, acid amide, acid anhydride, acid halide, acid azide and carboxy salt, and the dotted line indicates the alternate bond structure providing 3-cephem or 2-cephem, which comprises:reacting a halogenated derivative selected from the group consisting of a halogenated penam derivative having the formula: ##STR2## a halogenated cepham derivative of the formula: ##STR3## wherein X represents a halogen atom, R.sub.3 represents a radical selected from the group consisting of carboxy, protected carboxy, ester, acid amide, acid anhydride, acid halide, acid azide and carboxy salt, and R.sub.1 is as defined above, or mixtures thereof with a dehydrohalogenoic acid reagent.

Abstract: The invention relates to treatment of diseases caused by thromboxane A.sub.2 comprising administering a compound ##STR1## wherein R.sup.1 is hydrogen or lower alkyl,R.sup.2 is carboxy(lower)alkyl or protected carboxy(lower)alkyl andR.sup.3 is --CH.dbd.N--R.sup.4 in which R.sup.4 is arylureido or arylthioureido andX is --O--,or a pharmaceutically acceptable salt thereof.

Abstract: The invention relates to an anti-inflammatory or antiallergic composition containing a compound of the formula ##STR1## wherein A is ##STR2## R.sup.1 is aryl which may have cyano or carbamoyl, or heterocyclic group which may have lower alkyl,R.sup.2 is hydrogen or lower alkyl,R.sup.3 is lower alkyl,X is hydrogen, halogen, hydroxy or lower alkyl,m is an integer 1 or 2, andn is an integer 1 to 4, or pharmaceutically acceptable salts thereof.

Abstract: A compound of the formula: ##STR1## wherein R.sup.1 is lower alkyl optionally substituted with a substituent selected from the group consisting of acyl, hydroxy, lower alkoxy, aryl, lower alkylthio and a group of the formula: ##STR2## in which R.sup.5 is hydrogen or acyl and R.sup.6 is hydrogen or lower alkyl; aryl; or amino optionally substituted with substituent(s) selected from the group consisting of lower alkyl and acyl; andR.sup.2 is hydrogen or lower alkyl; orR.sup.1 and R.sup.2 are taken together with the attached nitrogen atom to form a heterocyclic group optionally substituted with substituent(s) selected from the group consisting of lower alkyl, hydroxy(lower )alkyl, lower alkoxy(lower)alkyl, acyl(lower)alkyl, oxo and acyl;R.sup.3 is hydrogen or lower alkyl; andR.sup.4 is lower alkyl;and its pharmaceutically acceptable salt, processes for the preparation thereof and pharmaceutical composition comprising the same.

Abstract: A picture processor comprising a memory array for storing video data involving at least one picture frame and a line buffer memory for processing at a high rate video signals included in one scan line of picture frame.

Abstract: The invention relates to novel compounds of the formula: ##STR1## wherein R.sup.1 is hydrogen, lower alkoxycarbonyl, phenylsulfonyl, phenylsulfonyl substituted with 1 to 3 substituent(s) selected from the group consisting of halogen, nitro, lower alkoxy, mono (or di or tri)halo(lower)alkyl and lower alkyl, phenylcarbamoyl, lower alkylsulfonyl, benzoyl or thienylsulfonyl;R.sup.2 is phenylsulfonyl or phenylsulfonyl substituted with 1 to 3 substituent(s) selected from the group consisting of halogen, lower alkyl, lower alkoxy and mono(or di or tri)halo(lower)alkyl,R.sup.3 is carboxy(lower)alkyl, lower alkyl substituted with carboxy and 1 to 3 halogen atom(s), esterified carboxy(lower)alkyl, carbamoyl(lower)alkyl, lower alkylsulfonylcarbamoyl(lower)alkyl, phenylsulfonylcarbamoyl(lower)alkyl, carboxyphenyl, esterified carboxyphenyl, carboxy, esterified carboxy, hydroxy(lower)alkyl, sulfino(lower)alkyl, phosphono(lower)alkyl, di(lower)alkoxyphosphoryl(lower)alkyl or halo(lower)alkyl,R.sup.

Abstract: A video information editing system has a field memory portion capable of storing predetermined units of digital video information, a peripheral circuit portion to make this field memory portion operate, and a video data writing circuit to rewrite video information from the field memory portion, these being added to a known video information reproducing device in the form of a video tape recorder/playback device. The system is so constructed as to access only specific video information comprising a portion of the complete original video information contained on the recording tape of the video tape recorder/playback device.