Abstract: A signal balance system, a light control system, and a signal balance method thereof are disclosed. The signal balance system includes a signal sensing module and a processing module. The signal sensing module is used for detecting an external signal source to generate a sensing signal. The processing module is used for generating an adjusting signal based on the sensing signal, wherein the processing module determines whether the sensing signal exceeds a first threshold; if yes, the processing module decreases the sensing signal to generate the adjusting signal so as to control a controlled device.

Abstract: An instrument for the manipulation of fine structures, said instrument detecting hand tremor and compensating for this hand tremor by effecting counter-movements of the working tip. The main area of application will probably lie in the field of microsurgery, since the operations performed in said field can be made difficult by the hand tremor of the operating surgeon. Here, the tremor is detected by movement sensors, by repeated analysis of the position of the handheld part (1) of the instrument, or by deriving electromyographic signals from the forearm of the operator. Intentional and unintentional movements are differentiated from one another on the basis of one or more criteria, such as movement amplitude, speed, frequency and direction. To compensate for undesired movements, signals are sent to an arrangement of actuators (3) which cause deflections of the movable part (4) of the instrument, which deflections at the tip of the instrument compensate for the hand tremor.

Abstract: A compact ribbon-indicator and chart-recorder instrument for use in process control systems adapted to indicate and simultaneously record the values of up to three independent process variables. The motive power for each pen/indicator drive system is supplied from a corresponding relatively high-speed stepping motor. Each such motor is servo-controlled by a feedback circuit including a potentiometer coupled to the pen drive cable for developing a d-c feedback signal to be compared with the d-c measurement signal. The system is arranged to actuate the motor immediately upon development of a deviation signal outside of a fixed dead-band, but the extent of initial motor movement is limited to a pre-set small amount (preferably one step). If the deviation signal still is outside of the dead-band after a predetermined period of time, a clock pulse oscillator is turned on to actuate the motor at a relatively rapid rate until the deviation signal returns to the dead-band.

Abstract: A plurality of sensors are provided each sensing a different condition occurring in a motor vehicle. Each sensor supplies a signal to a converter which converts the signals into a four-digit binary coded signal. A plurality of condition indicating panels, each bearing up to four projections, sequentially move past a stationary switch arrangement to open at least one of four normally closed switches to produce further binary coded signals. A digital comparator compares the four-digit binary signal from the converter with those developed by the switches. The comparator produces an output to drive an electric motor to continue movement of the indication panels when the compared signals do not coincide. When coincidence occurs, the output from the comparator changes to stop the motor thereby displaying the selected indication panel.

Abstract: An indication apparatus which detects a plurality of abnormal conditions occurring in a motor vehicle particularly in an automobile, and indicates an indicium corresponding to one of the abnormal conditions. When at least one of a plurality of sensors detects the occurrence of the plurality of abnormal conditions, a motor control circuit drives a motor whereby an indication drum coupled with the motor is also rotated so as to be stopped at a location for indicating the indicium corresponding to the detected abnormal condition. In order to investigate whether abnormal conditions other than the detected one have occurred or not, a switch for forcibly rotating the indication drum can be manually actuated so that the indication drum is further rotated so as to be stopped at a location for indicating another indicium corresponding to one of the other abnormal conditions and thus the other abnormal conditions are indicated successively.

Abstract: A vertical scale indicator has an index movable relative to a scale for indicating a condition sensed by a signal condition device. The index is supported on a flexible band wound on two drums. One drum is driven directly by a servomotor responsive to signals from the signal condition device and the other drum is driven by the servomotor through spring means for providing relative rotation between the drums to accommodate rotation of the drums through different angles in accordance with the amounts of tape wound on the drums.