摘要:
A display control apparatus for forming dot clocks for display corresponding to a video signal from a first sync signal and executing a display control is constructed by a comparator for comparing the first sync signal and frequency division signals, a clock forming circuit for forming the dot clocks for display on the basis of a result of the comparator, a memory in which frequency division parameters of the dot clocks for display have been stored, a frequency division signal forming circuit for forming the frequency division signals from the frequency division parameters and the dot clocks for display, a counter for counting the first sync signal, and a changing circuit for changing the frequency division parameters stored in the memory in the case where a count value of the counter reaches a predetermined value.
摘要:
A lens barrel includes a movable frame for holding an optical system, a fixed drum for supporting the movable frame so as to be movable in the direction of an optical axis, and a cam drum for moving the movable frame, wherein the movable frame is movably disposed between the fixed drum and the cam drum, and an outer peripheral portion of the fixed drum is provided with a support portion, penetrating through the movable frame, for rotatably supporting the cam drum.
摘要:
A lens barrel comprises a fixed barrel; a photographing lens which requires a first torque for driving the lens along the fixed barrel; and a surface wave motor including a fixed body and a moving body which is rotated relative to the fixed body by excitation for driving the lens. When the motor is not excited, a second torque is exerted between the moving body and the fixed body to prevent the relative rotation. The moving body is caused to rotate by a torque greater than the second torque. A friction generating device provided between the fixed barrel and the fixed body exerts a third torque to prevent relative rotation between the fixed barrel and the fixed body. The fixed body can rotate with respect to the fixed barrel only when the fixed body is caused to rotate by a torque greater than the third torque. A manual operation member drives the photographing lens by a manual operation; and a friction clutch provided between the manual operation member and the fixed body exerts a fourth torque. The manual operation member can rotate with respect to the fixed body only when caused to rotate by a torque greater than the fourth torque.
摘要:
A display apparatus, comprises a plurality of pixels arranged in pluralities of rows and columns. A plurality of first control lines is provided, each connecting a column of pixels in common, and a plurality of second control lines is provided, each connecting a row of pixels in common. The first control lines are divided into a plurality of blocks. Third control lines are disposed so that the first control lines in each of the blocks are commonly connected by a third control line. A multiplexing switching element is disposed at each connection between the third control lines and the first control lines. Further, a difference in output voltage between two multiplexing switching elements disposed at a boundary between a neighboring pair of blocks is 50 mV or less.
摘要:
A lens assembly for an automatic focusing camera having an automatic focusing mode and a manual focusing mode comprises an optical system including a lens group shiftable along an optical axis to perform a focusing operation, a focusing operation member rotatable around the optical axis to shift the lens group along the optical axis to perform the focusing operation, a power drive device for power driving the focusing operation member, a focusing handling member rotatable around the focusing operation member to perform the focusing operation manually, a connection element including a plurality of engaging recesses formed in an outer periphery of the focusing operation member at predetermined intervals in a circumferential direction, and a connecting member shiftable in a radial direction to engage with one of the recesses, the connecting element being adapted to transmit the rotation of the manual focusing handling member to the focusing operation member through the connecting member, and a changing-over device for changing over between a manual focusing mode position where the connecting member is engaged by one of the recesses and an automatic focusing mode position where the connecting member is disengaged from the recess.
摘要:
A liquid crystal display panel comprising: a liquid crystal display section; an array section of switching elements connected to first information signal lines of the liquid crystal display section, respectively; a driving circuit section which divides the switching element array section into a plurality of blocks and time-sharingly drives these blocks on a block unit basis; second information signal lines of wirings as many as the number of switching elements of one block among those blocks being connected to the driving circuit section; an information signal output circuit for applying an information signal to the second information signal lines; and an arithmetic operating circuit for correcting the information signal which is applied to the second information signal line in the previous block near the next block between the previous block which is previously driven and the next block which is driven next when the panel is time-sharingly driven for every block to an information signal to eliminate a high luminance which is produced in the first information signal line connected to this second information signal line.
摘要:
In a camera lens barrel having a stationary barrel and a distance ring, a click stop device comprises a ring for setting the restrained position of the distance ring disposed on the stationary barrel with a predetermined clearance with respect to the distance ring, a screw manually operable to fix the set ring to the stationary barrel at any desired position, and a pair of click stop means provided between the distance ring and the set ring so as to engage each other within the clearance.
摘要:
A compact and highly reliable recording head enabling precise detection of temperature information for each nozzle and rapid as well as highly accurate detection of nozzles with a discharge defect can be achieved. An electrothermal transducing member is provided on a substrate to generate heat energy for discharging liquid from a discharge port. A temperature detecting circuit includes a temperature detecting element for measuring a temperature of the transducing member. The temperature detection circuit includes a constant current circuit, a voltage detecting circuit, and a switching element.
摘要:
In order to provide a compact and highly reliable recording head enabling precise detection of temperature information on each nozzle and rapid as well as highly accurate detection on nozzles with a discharge defect, a liquid discharge head including a liquid discharge head with a plurality of electrothermal transducing members provided on a substrate to generate heat energy for discharging liquid from a discharge port includes a temperature detecting element formed immediately under each of the plurality of electrothermal transducing members to sandwich insulating film and a temperature detecting circuit for detecting temperature information from each of the temperature detecting elements.
摘要:
A compact and highly reliable recording head enabling precise detection of temperature information for each nozzle and rapid as well as highly accurate detection of nozzles with a discharge defect can be achieved. A plurality of electrothermal transducing members is provided on a substrate to generate heat energy for discharging liquid from discharge ports. A temperature detecting element formed immediately under each electrothermal transducing member to sandwich an insulating film and a temperature detecting circuit for detecting temperature information from each temperature detecting element are also provided.