摘要:
A microcomputer includes a program memory for storing program data, a program counter for addressing the program memory, an instruction decoder for decoding the program data read out from an address of the program memory addressed by the program counter, an electrically programmable nonvolatile memory for storing address data denoting an address of the program memory where program data to be corrected is stored, and correction program data, a comparator for comparing the output from the program counter with the address data stored in the nonvolatile memory and outputting a coincidence signal when a coincidence is found therebetween, and a program correction circuit for reading out the program data from the nonvolatile memory in response to the coincidence signal, and for supplying the readout data to the instruction decoder in place of the output from the program memory. According to another feature, the microcomputer may comprise a program correction circuit wherein a correction address is supplied to a program counter, and wherein code sections are stored.
摘要:
The flashing controller according to the present invention comprises an optimal light value computer for computing an optimal quantity of light, a full flashing light value memory for storing an actual quantity of light for full flashing, a difference computer for computing a difference between a quantity of light for full flashing and an optimal quantity of light, and a difference output/flashing time memory for storing the relationships between the difference output and the flashing time of a flashing apparatus. For controlling the flashing time of a strobe, a difference between an actual quantity of light for full flashing and an optimal quantity of light is used to specify a flashing time. Then, a flashing time control controls flashing of a strobe circuit. Using the controller, influence of a reflector whose specifications tend to be determined at a late stage can be programmed independently during manufacturing. This helps reduce a production risk and improve precision in flashing control.
摘要:
The present invention provide a process for producing printed circuit boards which comprises the steps of(a) roughening a surface of a copper layer formed on an insulating board.(b) coating the roughened surface of copper layer with a photo-resist layer containing a sublimable copper-corrosion inhibitor, exposing the resist layer selectively to actinic rays according to a circuit pattern to form, and developing the resulting resist layer, thereby forming plating-resist coats on circuit-negative pattern portions of the copper layer,(c) heat-treating the plating-resist coats,(d) plating chemically the circuit-corresponding portion with copper,(e) removing the plating-resist coats, and(f) removing the copper layer except the circuit-corresponding portion thereof.
摘要:
A power focusing apparatus, while a rotary operating member is rotated calculates a motor driving speed in accordance with a rotating speed of the operating member or calculates an amount of driving the motor in accordance with a speed and an amount of rotating the operating member and drives a lens with the calculated speed or amount of driving the motor.
摘要:
A photosensitive resin composition comprising (a) 20 to 75 parts by weight of a urethane diacrylate or dimethacrylate compound obtained by reacting trimethylhexamethylene diisocyanate and/or isophorone diisocynate dihydric alcohol and an acrylic or methacrylic monoester of a dihydric alcohol, (b) 20 to 75 parts by weight of a linear polymeric compound having a glass transition temperature of about 40.degree. to 150.degree. C., and (c) a sensitizer and/or a sensitizer system which generate free radicals owing to actinic light, is excellent in heat resistance, resistance to thermal shock and solvent resistance, and is suitable for forming a soldering mask. Further, a photosensitive element produced by forming a layer of the above-mentioned composition on a support gives a protective coating film excellent in heat resistance, resistance to thermal shock and solvent resistance, and is particularly suitable for a soldering mask.
摘要:
Polyesteramides produced by reacting in the first step an aromatic monoalkyl dicarboxylate with an aromatic diisocyanate in the presence or absence of one or more monoalkyl dicarboxylates and/or diisocyanates to produce an aromatic dialkyl diamidedicarboxylate of the formula: ##STR1## wherein R.sub.1 is alkyl; and R.sub.2 is a divalent aromatic residue, or a mixture of dialkyl diamidedicarboxylates containing the compound of the formula (II), and reacting in the second step the compound of the formula (II) or the mixture containing the compound of the formula (II) with one member selected from the group consisting of(a) one or more polyhydric alcohols,(b) one or more polyhydric alcohols and polyvalent carboxylic acids, and(c) one or more polyhydric alcohols and a linear polyester have improved heat resistance as well as excellent mechanical properties and can be used, e.g., for enamelled wire.
摘要:
A camera capable of white balance correction (WBC) of this invention has an image pickup optical system, an image sensor for receiving light from an object, a three-primary-color (3-color) detection section for detecting 3-color signals based on the image sensor output, a matrix processing section for calculating 2-color difference signals from the 3-color signals, a visible-light brightness detection section for detecting visible-light brightness by the output from the 3-color detection section or by a photometric section, an infrared-light detection section for detecting the lightness of infrared-light, and an artificial-light detection section for calculating the ratio of artificial light and natural-light. A correction range for performing the WBC is obtained based on the ratio of artificial-light and natural-light computed by the artificial-light detection section, and the WBC is performed when the 2-color difference signals are within the correction range.
摘要:
A battery check device for a camera which includes a discharging circuit to which current flows from a battery and a discharging time setting device for setting a discharging time for determining that an internal resistance of the battery has increased due to non-use of the battery so as to temporarily reduce an output voltage of the battery. The discharging time set by the discharging time setting device is longer than a time required to check the residual energy amount of the battery. A determining device determines whether a voltage of the discharging circuit has reached a reference voltage specific to the battery within the discharging time. It is determined that the residual energy amount of the battery is sufficient and that the internal resistance of the battery has merely increased due to non-use of the battery when the determining device determines that the voltage of the discharging circuit has reached the reference voltage specific to the battery within the discharging time but after the time required to check the residual energy amount of the battery. And it is determined that the residual energy amount of the battery is insufficient when the determining device determines that the voltage of the discharging circuit has not reached the reference voltage specific to the battery within the discharging time.
摘要:
A microcomputer includes a program memory for storing program data, a program counter for addressing the program memory, an instruction decoder for decoding the program data read out from an address of the program memory addressed by the program counter, an electrically programmable nonvolatile memory for storing address data denoting an address of the program memory where program data to be corrected is stored, and correction program data, a comparator for comparing the output from the program counter with the address data stored in the nonvolatile memory and outputting a coincidence signal when a coincidence is found therebetween, and a program correction circuit for reading out the program data from the nonvolatile memory in response to the coincidence signal, and for supplying the readout data to the instruction decoder in place of the output from the program memory.According to another feature, the microcomputer may comprise a program correction circuit wherein a correction address is supplied to a program counter, and wherein code sections are stored.
摘要:
A camera includes a movable unit. A motor drives the movable unit. A memory stores a drive target position of the movable unit. A pulse generator generates pulses according to a movement of the movable unit. A first detector detects the remaining number of pulses up to a target position on the basis of the number of generated pulses, and the drive target position. A second detector detects a moving speed of the movable unit on the basis of an interval of the generated pulses. Based on the detected moving speed, a prediction circuit predicts the number of pulses which will be generated by the pulse generator until the movable unit is stopped when the motor is in an open state. A calculation circuit calculates a difference between the predicted number of pulses and the remaining number of pulses. A controller controls the motor by selecting, based on the difference, one of a motor ON mode for applying a power supply voltage to the motor, a motor open mode for applying no power supply voltage to the motor to drive it by inertia, and a motor brake mode for short-circuiting the motor to brake it.