摘要:
A video mixing apparatus for mixing a first video signal and a second video signal in accordance with a first key signal and a second key signal. The video mixing apparatus includes a key signal mixer for receiving the first and second key signals and generating and outputting a third key signal and a fourth key signal, wherein a level K.sub.1 of the first key signal, a level K.sub.2 of the second key signal, a level K.sub.p of the third key signal, and a level K.sub.m of the fourth key signal satisfy the relationships: K.sub.p =K.sub.2 -K.sub.1 K.sub.2, and K.sub.m =K.sub.1 +K.sub.2 -K.sub.1 K.sub.2 ; a key signal division section for receiving the third and fourth key signals and generating and outputting a fifth key signal, wherein a level K.sub.g of the fifth key signal satisfies the relationship: K.sub.g =K.sub.p /K.sub.m ; and a first video signal mixer for receiving the first and second video signals and the fifth key signal and generating and outputting a third video signal by mixing the first and second video signals at a mix ratio which is in accordance with the fifth key signal.
摘要:
A method for machining a groove in a sealing member and the edges of the groove. A tool 24 is formed with a top portion 24 having cutter sections 23A, each defining a cutting edge 23 for machining a groove in a scroll wall of a scroll member, and a tapered part 25 having cutter sections 26A, each defining a cutting edge 26 for bevelling the edges of the groove and the edges of the scroll wall. The groove 9 and edges 11 are simultaneously machined.
摘要:
Disclosed is a control device for internal-combustion engine which is capable of detecting an abnormality in accelerator pedal angle sensors throughout a range of accelerator pedal angles and continuing operation even when an abnormality is detected. It includes a first accelerator pedal angle sensor for detecting an accelerator pedal angle, a second accelerator pedal angle sensor for detecting the accelerator pedal angle, and a minor selection device for selecting, as the accelerator pedal angle, a lower value of one of the outputs of the first accelerator pedal angle sensor and the second accelerator pedal angle sensor.
摘要:
A device for coping with a sensor abnormal state in an electronic control system in an internal combustion engine in which a predetermined operation control device is controlled in response to detection signals obtained from various engine sensors. The device includes an engine speed sensor and a temperature sensor. A discriminator determines that the temperature sensor is abnormal when a state, in which engine speed N.sub.E is less than a predetermined value n.sub.A and concurrently temperature T.sub.W is less than a predetermined value T.sub.A -.DELTA..sub.A, continues for a predetermined time tm.sub.DT. The detected temperature value T.sub.W is corrected to a larger value provisionally to decrease the rotational speed N.sub.E of the engine when the abnormal state is indicated.
摘要:
An electrical connecting arrangement is provided for establishing electrical connections of electronic printed-circuit boards detachably mounted in a cabinet of an electronic installation at a front side thereof. For the establishment of electrical connections, at least one connector is used, and a connector support member is attached to a rear side of the cabinet. The connector includes two connector halves to be coupled to each other. One of the connector halves is detachably attached to and supported by the support member, and is joined to an end of an electrical cable. The other connector half is securely attached to and by a rear side of the printed-circuit board. The connector halves are aligned with each other upon mounting the printed-circuit board in the cabinet, to thereby ensure coupling of the connector halves.
摘要:
A solid state image pickup device having a high luminance signal resolution in both horizontal and vertical directions using only one CCD is realized. It is so arranged as to make light incident upon and passed through a fixed complementary color filter array subjected to a photoelectric conversion with an all-pixel concurrent readout photoelectric conversion means and fed to a luminance signal processing unit and a chrominance signal processing unit through an H memory unit to develop a luminance signal together with a first and a second chrominance signals at output terminals.
摘要:
When the output from an internal combustion engine is reduced using a combination of a throttle valve control device, a fuel cut control device and an ignition retard control device, the starting point of operation of the ignition retard control device in a control region of condition for an excessive slipping of the driving wheel is provided between the starting region of operation of the throttle valve control device and the starting region of operation of the fuel cut control device. This permits the fuel cut control device to have a high responsiveness to a sudden variation in excessive slipping and no exhaust heat to be discharged, and also permits the throttle valve control device to become lower in responsiveness after the excessive slipping has been substantially converged but to have a small variation in fuel-air ratio. The ignition retard control device starts operation only when the excessive slipping cannot be suppressed by the throttle valve control device. Therefore, the use of the ignition retard control device which relatively easily permits an increase in the temperature of an exhaust gas can be restrained to the minimum.
摘要:
A control system for controlling driving wheels of an automotive vehicle in which when at least one of the driving wheels undergoes excessive slip, an ECU drives a pulse motor to bring a throttle valve of an internal combustion engine installed in the vehicle toward a closed position thereof to thereby suppress the excessive slip. When a state that a detected value of throttle valve opening is smaller than a detected value of accelerator pedal angle while the pulse motor is in stoppage has continued over a predetermined period of time, the ECU determines the initial position of the pulse motor by storing the detected throttle valve opening value as a reference value of the pulse motor position. If the initial pulse motor position has not been determined when a second predetermined period of time has elapsed after the pulse motor started to be driven to bring the throttle valve toward its fully closed position, a throttle system of the engine is determined to be abnormal, and then the pulse motor is forcedly driven to bring the throttle valve into its fully open position. After completion of pulse motor control for suppression of the excessive slip, the ECU carries out open loop control for driving the pulse motor to bring the throttle valve into a substantially fully open position irrespective of whether or not the initial position of the pulse motor has been determined.
摘要:
A driving wheel slip control system for a vehicle equipped with an internal combustion engine capable of changing the valve lift characteristic of inlet and/or exhaust valves thereof. An output from the engine is decreased in response to a detected magnitude of slip of at least one of the driving wheels. An engine output decrement is changed in response to the changed valve lift characteristic.
摘要:
An adaptive quantizing device for use in a differential encoder which makes use of a device input signal variable in a predetermined dynamic range, a local decoded signal, and a local input signal from a prediction signal. The quantizing arrangement (12, 13) is provided for adaptively quantizing a difference between the device and the local input signals into a quantization output signal in accordance with a predetermined quantization characteristic so that the local decoded signal never exceeds the dynamic range even if the quantization output signal is accompanied by a quantization error of a maximum value. Preferably, the quantizing arrangement comprises a converting circuit (16) for quantizing the device input signal into a converted signal in accordance with a preselected quantization characteristic for use in making a single quantizer (13) adaptively quantize the difference into the quantization output signal. Alternatively, the quantizing arrangement may comprise three quantizers and a selecting arrangement for adaptively selecting one of outputs of the three quantizers. A read-only memory is preferred in implementing each of the single quantizer, the converting circuit, the three quantizers, and a combination of the three quantizers and the selecting arrangement.