1. An engine control device that controls a two cycle engine for driving a vehicle by using a microcomputer, comprising:
a reverse switch operated for reversing a rotational direction of said engine;
reverse control means for performing reverse control including a process of excessively advancing an ignition position of said engine for reversing the rotational direction of said engine when said reverse switch is operated; and
a light emitting display device which displays that said reverse control is performed,
wherein said reverse control means comprises light emitting display device blinking means for blinking said light emitting display device when said reverse switch is once operated, and operating error preventing means for starting said reverse control when said reverse switch is again operated within a set time after the one operation of said reverse switch, and stopping said reverse control when said reverse switch is not again operated within said set time after the one operation of said reverse switch.
2. The engine ignition control device according to claim 1, wherein said reverse control means further comprises light emitting display device control means for continuously lighting said light emitting display device when the rotational direction of said engine reversed by said reverse control is a vehicle retracting direction, and extinguishing said light emitting display device when the rotational direction of said engine reversed by said reverse control is a vehicle advancing direction.
3. An engine ignition control device that controls a two cycle engine for driving a vehicle by using a microcomputer, comprising:
a reverse switch operated for reversing a rotational direction of said engine;
reverse control means for performing reverse control for reversing the rotational direction of said engine, comprising speed reduction control means for reducing a rotational speed of said engine when said reverse switch is operated, excessive advance control means for excessively advancing an ignition position of said engine when said rotational speed is reduced to an excessive advance start rotational speed, rotational direction determination means for determining the rotational direction of said engine for confirming whether an excessive advance of said ignition position causes the rotational direction of said engine to be reversed, and reverse time initial ignition control means for igniting said engine in the ignition position at a low speed in a state of the rotational direction being reversed when it is confirmed that said rotational direction is reversed; and
a light emitting display device which displays that said reverse control is performed,
wherein said reverse control means comprises light emitting display device blinking means for blinking said light emitting display device when said reverse switch is once operated, operating error preventing means for starting said reverse control when said reverse switch is again operated within a set time after the one operation of said reverse switch, and stopping said reverse control when said reverse switch is not again operated within said set time after the one operation of said reverse switch, and light emitting display device control means for continuously lighting said light emitting display device when said rotational direction determination means determines that the rotational direction of said engine reversed is a vehicle retracting direction, and extinguishing said light emitting display device when said rotational direction determination means determines that the rotational direction of said engine is a vehicle advancing direction.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-14. (canceled)
15. A signal processing device comprising:
a variable amplifier configured to output a signal, as an output signal thereof, corresponding to an input signal, an offset and a gain of the variable amplifier being able to be adjusted;
a comparing means configured to compare a level of the output signal of the variable amplifier with a plurality of thresholds;
a detecting means configured to detect either or both of a shift of the offset of the variable amplifier and an excess or deficiency of the gain of the variable amplifier based on the result of the comparison executed in the comparing means; and
an adjusting means configured to adjust either or both of the offset and the gain of the variable amplifier based on the result of the detection executed in the detecting means, wherein
the detecting means is also configured to utilize, as the result of the comparison for each of the plurality of thresholds, a number of times selected from a group consisting of a first number of times that the level of the output signal changes from a level below the threshold to a level over the threshold in a predetermined period, the second number of times that the level of the output signal changes from the level over the threshold to the level below the threshold in the predetermined period, and a third number of times which is a sum of the first number of times and the second number of times, said number of times being similarly selected among the plurality of thresholds.
16. The signal processing device according to claim 15, wherein
the detecting means is also configured to detect either or both of the shift of the offset of the output signal and the excess or deficiency of the gain of the output signal based on a combination of the numbers of times as similarly selected among the plurality of thresholds.
17. The signal processing device according to claim 16, wherein
the detecting means is also configured to detect an estimation of the shift of the offset of the output signal based on the combination of the number of times as similarly selected among the plurality of thresholds, and
the adjusting means is also configured to determine an adjusting amount of the offset based on the estimation of the shift of the offset.
18. The signal processing device according to claim 16, wherein
the detecting means is also configured to detect an estimation of the excess or deficiency of the gain of the output signal based on the combination of the numbers of times as similarly selected among the plurality of thresholds, and
the adjusting means is also configured to determine an adjusting amount of the gain based on the estimation of the excess or deficiency of the gain.
19. A bar-code reader comprising:
a sensor;
the signal processing device according to claim 15; and
a decoder, wherein
the signal processing device is also configured to treat an output signal of the sensor as an input signal supplied to the signal processing device, and
the decoder is configured to treat an output signal of the signal processing device as an input signal supplied to the decoder.
20. A signal processing method comprising:
a step in which, a variable amplifier outputs a signal, as an output signal thereof, corresponding to an input signal, an offset and a gain of the variable amplifier being able to be adjusted;
a step in which, a comparing means compares a level of the output signal of the variable amplifier with a plurality of thresholds;
a step in which, a detecting means detects either or both of a shift of the offset of the variable amplifier and an excess or deficiency of the gain of the variable amplifier based on the result of the comparison executed in the comparing means; and
a step in which, an adjusting means adjusts either or both of the offset and the gain of the variable amplifier based on the result of the detection executed in the detecting means, wherein
the detecting means utilizes, as the result of the comparison for each of the plurality of thresholds, a number of times selected from a group consisting of a first number of times that the level of the output signal changes from a level below the threshold to a level over the threshold in a predetermined period, the second number of times that the level of the output signal changes from the level over the threshold to the level below the threshold in the predetermined period, and a third number of times which is a sum of the first number of times and the second number of times, said number of times being similarly selected among the plurality of thresholds.
21. A signal processing program for causing a computer to function as an output signal’s wave shape adjusting device for adjusting an output signal from a variable amplifier configured to output a signal, as an output signal thereof, corresponding to an input signal, an offset and a gain of the variable amplifier being able to be adjusted, the program causing the computer to function as:
a comparing means configured to compare a level of the output signal of the variable amplifier with a plurality of thresholds;
a detecting means configured to detect either or both of a shift of the offset of the variable amplifier and an excess or deficiency of the gain of the variable amplifier based on the result of the comparison executed in the comparing means; and
an adjusting means configured to adjust either or both of the offset and the gain of the variable amplifier based on the result of the detection executed in the detecting means, wherein
the detecting means is also configured to utilize, as the result of the comparison for each of the plurality of thresholds, a number of times selected from a group consisting of a first number of times that the level of the output signal changes from a level below the threshold to a level over the threshold in a predetermined period, the second number of times that the level of the output signal changes from the level over the threshold to the level below the threshold in the predetermined period, and a third number of times which is a sum of the first number of times and the second number of times, said number of times being similarly selected among the plurality of thresholds.