摘要:
By using an EIP source lock counter, a frequency of a Gunn oscillator is stabilized. This increases the frequency stability of a circuit. An oscillation output of the Gunn Oscillator is supplied to the EIP source lock counter, and a phase lock signal indicative of a phase shift of the oscillation frequency from the EIP source lock counter relative to a preset reference frequency is supplied to a driver circuit. The driver circuit includes level shift circuit which level-shifts the phase lock signal thereof. A phase compensation circuit in the driver circuit boosts a gain as well as advances a phase at a high frequency region. The current amplifier circuit amplifies a current amplitude of the output of the level shift circuit, and the amplified output therefrom controls an oscillation frequency of the Gunn oscillator using negative feedback.
摘要:
An OTP microcomputer of the present invention includes: a PROM 14 having a terminal for receiving signals from a voltage supply Vpp that allows a program to be written therein; a MOS transistor to be used as a resistance or a resistance cable containing a pull-up resistance R4, and an input terminal 11 connected to both the terminal of the PROM and a logic circuit of the microcomputer and connected with the drain of the MOS transistor or one end of the resistance R4. In this arrangement, when a microcomputer mode in which the OTP microcomputer is operated as a normal microcomputer is selected, a voltage Vcc (.vertline.Vpp.vertline.>.vertline.Vcc.vertline.) of a device power supply provided inside the circuit of the microcomputer is supplied to the source of the MOS transistor or the other end of the resistance R4. On the other hand, when an OTP mode in which the PROM is written in with a program is selected, the voltage Vpp of the power supply for allowing a program to be written in is supplied to the source of the MOS transistor or the other end of the resistance R4.
摘要:
A PLL clock signal generation circuit comprising a phase comparator, a charge pump circuit, a filter circuit, a voltage control oscillator and a divider, wherein a multiple rate control circuit is further included which detects a state of the reference voltage (output from a filter circuit) and controls a change of a multiple rate of a divider according to a state of the detected reference voltage. The multiple rate control circuit further outputs control signal LPFOUT for changing a multiple rate so that the PLL clock signal generation circuit does not deviate from a region capable of locking when being detected of deviation from the region capable of locking by detecting the state of reference voltage.
摘要:
A writing circuit for a nonvolatile memory has eight circuit units for bit parallel processing. Each circuit unit has 16 first D flip-flops for address 0 to address F, and one second D flip-flop. The eight circuit units hold in their own 16 first D flip-flops write data of 8 bits fed in bit parallel fashion with respect to each of the 16 addresses. The totally eight second D flip-flops simultaneously hold 8 bits of verify data read from memory cells in bit parallel fashion. In verify operation, in each of the eight circuit units, the write data held in the first D flip-flops are given 16 address attributes, respectively, and compared with the verify data held by the second D flip-flop in an address sequence of the 16 address attributes to make sure of coincidence between the data.
摘要:
A diazacycloalkanealkylsulfonamide derivative having the following formula �I!: ##STR1## and pharmacologically acceptable salts thereof. The compounds have antiallergic activity with low antihistaminic activity and low toxicity and are useful as an medicament for preventing and treating diseases such as bronchial asthma, allergic rhinitis, atopic dermatitis, urticaria.
摘要:
A PLL clock signal generation circuit comprising a phase comparator, a charge pump circuit, a filter circuit, a voltage control oscillator and a divider, wherein a multiple rate control circuit is further included which detects a state of the reference voltage (output from a filter circuit) and controls a change of a multiple rate of a divider according to a state of the detected reference voltage. The multiple rate control circuit further outputs control signal LPFOUT for changing a multiple rate so that the PLL clock signal generation circuit does not deviate from a region capable of locking when being detected of deviation from the region capable of locking by detecting the state of reference voltage.
摘要:
An improvement in the production of imidazole derivatives including histamine H3 agonist immepip and histamine H3 antagonist VUF4929. Desired imidazole derivatives can be easily obtained in high yield by using novel intermediates represented by the general formula (I): (I) wherein R1 is an amino-protecting group; R2 and R3 are each independently hydrogen, lower alkyl, or hydroxylated lower alkyl; R4 is lower alkyl, halogenated lower alkyl, or substituted or unsubstituted phenyl; and A is C1-3 alkylene.
摘要翻译:咪唑衍生物的生产改进,包括组胺H3激动剂immepip和组胺H3拮抗剂VUF4929。 通过使用由通式(I)表示的新型中间体,可以容易地获得所需的咪唑衍生物:(I)其中R 1是氨基保护基; R 2和R 3各自独立地为氢,低级烷基或羟基化的低级烷基; R 4是低级烷基,卤代低级烷基或取代或未取代的苯基; A是C 1-3亚烷基。
摘要:
An acquisition system for the SDMA/TDMA satellite communication system is disclosed in which a synchronization signal receiving time slot and a plurality of data signal receiving time slots, for communication between predetermined groups of earth stations and between the earth stations of each group, are sequentially provided at the satellite based on timing signal in the satellite. An acquisition signal having a plurality of signal burst portions is transmitted from the earth station, with its transmit time slot being shifted in a first sweep mode until one part of the acquisition signal is received by said transmitting earth station. At that time the transmit time slot is shifted in a second sweep mode, whereby a control is made to obtain synchronization of the earth station with the satellite so that the plurality of burst portions in the acquisition signal may be properly communicated to the predetermined groups.Further, an acquisition control is shown to be effectively achieved in the case where the SN ratio of the received acquisition signal is extremely deteriorated or where it is necessary to prevent disturbing another earth station of the same group of earth stations which has already accessed the satellite.
摘要:
An improvement in the production of imidazole derivatives including histamine H3 agonist immepip and histamine H3 antagonist VUF4929. Desired imidazole derivatives can be easily obtained in high yield by using novel intermediates represented by the general formula (I): (I) wherein R1 is an amino-protecting group; R2 and R3 are each independently hydrogen, lower alkyl, or hydroxylated lower alkyl; R4 is lower alkyl, halogenated lower alkyl, or substituted or unsubstituted phenyl; and A is C1-3 alkylene
摘要翻译:包括组胺H 3激动剂immepip和组胺H 3 N拮抗剂VUF4929的咪唑衍生物的生产的改进。 通过使用由通式(I)表示的新型中间体,可以容易地获得所需的咪唑衍生物:(I)其中R 1是氨基保护基; R 2和R 3各自独立地为氢,低级烷基或羟基化的低级烷基; R 4是低级烷基,卤代低级烷基或取代或未取代的苯基; 且A为C 1-3亚烷基
摘要:
A process for advantageously preparing a piperazinesulfonamide derivative represented by the general formula (III): wherein R1 is hydrogen atom, a straight or branched chain alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, hydroxyl group, trifluoromethyl group, nitro group or amino group; R2 is a phenyl group which may have as substituents on its phenyl ring 1 to 3 groups selected from the group consisting of an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, hydroxyl group, trifluoromethyl group, nitro group and amino group, 2-pyridyl group, 3-pyridyl group or 4-pyridyl group; each of R3 and R4 is independently hydrogen atom, a straight or branched chain alkyl group having 1 to 6 carbon atoms, a hydroxyalkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 8 carbon atoms, or a phenyl group which may be substituted; and Y is an alkylene group having 1 to 12 carbon atoms, and a salt thereof.
摘要翻译:一种有利地制备由通式(III)表示的哌嗪磺酰胺衍生物的方法:其中R1是氢原子,具有1至6个碳原子的直链或支链烷基,具有1至4个碳原子的烷氧基,卤素原子 ,羟基,三氟甲基,硝基或氨基; R2是可以在其苯环上具有取代基的苯基,其选自具有1至4个碳原子的烷基,具有1至4个碳原子的烷氧基,卤素原子,羟基 三氟甲基,硝基和氨基,2-吡啶基,3-吡啶基或4-吡啶基; R 3和R 4各自独立地为氢原子,具有1至6个碳原子的直链或支链烷基,具有1至4个碳原子的羟基烷基,具有3至8个碳原子的环烷基或苯基, 被替代 Y为碳原子数1〜12的亚烷基及其盐。