Abstract: A heating apparatus, an image forming apparatus, and a liquid discharge apparatus. The heating apparatus includes a heating roller having a heat source inside, an end holder in which a portion of the heat source is disposed, the end holder holding an axial end of the heating roller rotatably, and an air supply device configured to supply air into the end holder in a direction intersecting with an axial direction of the heating roller. The heating apparatus includes a heating roller having a heat source inside, and an end holder in which a portion of the heat source is disposed, the end holder rotatably holding an axial end of the heating roller. In the heating apparatus, the end holder has an air inlet opening through which air is supplied into the end holder and an air outlet opening through which air is ejected outside from inside the end holder.

Abstract: The vertical/horizontal amplitude control device for controlling a vertical amplitude and a horizontal amplitude of an image display device for displaying a video signal includes a brightness level detector for detecting a brightness level of the video signal, a vertical amplitude controller for controlling the vertical amplitude based on the brightness level, and a horizontal amplitude controller for controlling the horizontal amplitude based on the brightness level. The device controls the vertical and horizontal amplitudes into constant without a delay from a change of a video signal even when the brightness level of the video signal abruptly changes.

Abstract: The automatic cut-off system includes a video data processing circuit, a cut-off control circuit, a drive circuit, and a level control section. The video data processing circuit adds a cut-off reference pulse having a predetermined level to primary-color signals of red (R), green (G) and blue (B) at different timings within a single vertical blanking interval, and outputs latch timing signals respectively indicating the timings. The cut-off control circuit shifts a level of each primary-color signal having the cut-off reference pulse added thereto based on a corresponding cut-off control signal. The drive circuit drives each cathode of a CRT (cathode-ray tube) based on a corresponding one of the shifted primary-color signals, and outputs a voltage corresponding to each cathode current as a common feedback signal. The level control section latches the feedback signal in response to each latch timing signal, and outputs the cut-off control signal of one of the primary-color signals.

Abstract: An information terminal device is able to send information such as a message or the like to a plurality of users of the single information terminal device while reducing tedious and time-consuming operations, without the need for operating an input unit that is connected to the information terminal device. Information determinator extracts electronic information which satisfies a desired condition or conditions set in information determination setting unit, from electronic information received by information acquisition unit, and outputs the extracted electronic information to information manipulator.

Abstract: An information terminal device allows the user to easily recognize the status of user environments that are set up on the information terminal device. In the information terminal device, a user environment controller prompts the user to register an object such as application software when the user environments are set up. After the user environments are set up, the user environment controller monitors the status of the object. If it is judged that the status of the object has undergone a change, then the user environment controller displays the status change on a display unit.

Abstract: The vertical/horizontal amplitude control device for controlling a vertical amplitude and a horizontal amplitude of an image display device for displaying a video signal includes a brightness level detector for detecting a brightness level of the video signal, a vertical amplitude controller for controlling the vertical amplitude based on the brightness level, and a horizontal amplitude controller for controlling the horizontal amplitude based on the brightness level. The device controls the vertical and horizontal amplitudes into constant without a delay from a change of a video signal even when the brightness level of the video signal abruptly changes.

Abstract: A phase controller of a horizontal drive pulse fed into a horizontal deflection circuit supplying a horizontal deflection pulse, and a control method of the same are disclosed. A frequency discriminator identifies a format of video-input-signal by detecting a frequency of the horizontal sync signal. A reference phase generator generates a reference phase signal based on the output from the frequency discriminator. A sawtooth waveform generator generates a sawtooth waveform signal responsive to the output from the frequency discriminator. A phase difference voltage detector outputs a phase difference voltage responsive to the phase difference between the reference phase signal and the horizontal deflection pulse. A phase control signal generator generates a phase control signal using the phase difference voltage and the sawtooth waveform signal. Horizontal drive pulse generator outputs a horizontal drive pulse having a phase responsive to the phase control signal.

Abstract: A color demodulation apparatus having color demodulation capabilities as the conventional ones, with its size reduced by sharing part of processing circuit therein is provided. An adder circuit 10 and a SW circuit 11 shift the phase of a ramp wave generated by a VCO circuit 9 alternately 90 degrees and 180 degrees for each clock. A SIN data generator circuit 12 generates a phase alternate SIN wave signal from the shifted ramp wave. A multiplier circuit 3 performs R-Y and B-Y demodulation through multiplexing based on the phase alternate SIN wave signal. An accumulator circuit 6 accumulates burst signals of each of R-Y and B-Y signals of the demodulated, multiplexed signal. A second load hold circuit 8 separately outputs an R-Y burst signal to the VCO circuit 9, and a B-Y burst signal to a comparator circuit 13, constituting two feedback loops. A first load hold circuit 5 separates R-Y and B-Y signals from the multiplexed signal, and outputs these two signals.

Abstract: A color signal reproducing circuit having A/D converter 101, sync separator 102, YC separator 103, gain controller 105, multipliers 106 and 107, low-pass filters 108 and 109, burst-period cumulative adders 110 and 111, SINCOS generator 112, clock generator 113, and ramp-wave generator 114. The simple structure allows a color signal reproducing circuit to be used commonly in a different television systems without changing its clock frequency considerably in accordance with broadcasting systems and also achieves YC separation and color signal demodulation from analog composite signal with a higher degree of precision.

Abstract: The automatic cut-off system includes a video data processing circuit, a cut-off control circuit, a drive circuit, and a level control section. The video data processing circuit adds a cut-off reference pulse having a predetermined level to primary-color signals of red (R), green (G) and blue (B) at different timings within a single vertical blanking interval, and outputs latch timing signals respectively indicating the timings. The cut-off control circuit shifts a level of each primary-color signal having the cut-off reference pulse added thereto based on a corresponding cut-off control signal. The drive circuit drives each cathode of a CRT (cathode-ray tube) based on a corresponding one of the shifted primary-color signals, and outputs a voltage corresponding to each cathode current as a common feedback signal. The level control section latches the feedback signal in response to each latch timing signal, and outputs the cut-off control signal of one of the primary-color signals.

Abstract: In a horizontal deflection circuit, a waveform response of a horizontal output pulse must be adequately taken into account before and after a switching of the horizontal output pulse so that the waveform does not lack in shape and does not lose continuity at the switching. A switching apparatus for a horizontal driving apparatus includes (a) a horizontal driving pulse generator which generates a horizontal driving pulse from a horizontal synchronization signal, (b) an alternative signal generator which outputs an alternative signal different from the horizontal driving pulse, (c) a horizontal output control device which determines a timing to switch between the horizontal driving pulse and the alternative signal, and (d) a switching device which switches an output pulse with a control signal which is output from the horizontal output control device.

Abstract: In an image processor system, a processor includes a first two-dimensional look-up table for receiving first and second digital data as an address, a second two-dimensional look-up table for receiving an output digital data of the first two-dimensional look-up table and a third digital signal as an address, and a latch circuit for temporarily storing the output digital data of the second look-up table. The processor is flexible and the functions thereof can be varied by changing the contents of the look-up tables.

Abstract: A tracking control robot controls its arm end, which holds a tool, to track a taught path so that a reaction force between a workpiece and the tool remains constant. An ideal state for the arm end is determined from the present state of the arm end and the difference between the actual reaction force and a predetermined target force. Then, this ideal state is compared with a reference state of the arm end on the taught path to obtain a target position and a target attitude of the arm end. Since a target position is always determined independently of the last target position, no position error due to time delay affects a new target position even when the next target position is generated before the tool reaches the last target position. Thus, the robot is quick, responsive, and accurate when tracking at a constant operation speed.

Abstract: A pouch made of a heat-fusible material is sealed at its mouth while being transferred on a conveyor. A vibrator provided at one side of the track of the conveyor is pressed against the mouth of the pouch for vibrative heating in response to a signal from a sensor and is moved away from the mouth in response to a sensor signal. The sensor detects the coming and passing of the pouch at and through the sealing station. The pouch preferably has an open mouth with a presealed leading edge which ensures that the entire mouth is completely sealed. The provision of the presealed leading edge along with the vibrator for vibrative heat-sealing ensures that a good seal is produced even if powder or fat has adhered to the sealing surface.

Abstract: In a tracking control system of a multijoint robot, a change in posture of an end of a tool attached to a hand of a robot arm is defined as rotation about a rotational main axis of the tool. An arc traced by an imaginary point which is in a plane perpendicular to the rotational main axis and which is spaced apart by a predetermined distance from the rotational main axis is synthesized with a straight line traced by the imaginary point upon translational motion of the end of the tool, thereby producing a helical trajectory. A velocity pattern is given to this helical trajectory, and a translational velocity pattern and a rotational velocity pattern are derived as components from the velocity pattern given to the helical trajectory. Servo control is smoothly performed to control joint variables so as to provide a target position/posture tracking output which prevents abrupt changes.

Abstract: The invention relates to a mechanism wherein a relative rotary angle of a driving motor is detected by use of an encoder, and, if an error occurs in a servo control action when the driving motor is servo-controlled in accordance with a deviation value of the relative rotary angle from a desired rotary angle of the driving motor, then the servo control action is brought to an emergency stop. A potentiometer for detecting an absolute rotary angle of the driving motor is connected to a rotary shaft of the driving motor and said emergency stop is effected when a difference between said absolute rotary angle and said relative rotary angle exceeds a preset tolerance value, so that an error in the servo control action can be reliably prevented.

Abstract: The invention relates to a control circuit of a pulse width modulation inverter, wherein a current control circuit to output a current control signal corresponding to a current command signal is provided, main transistors of a main circuit of the pulse width modulation inverter are switchingly controlled in response to a current control signal, whereby a driving current supplied to a motor from the pulse width modulation inverter is controlled to a value corresponding to the current command signal.The current control circuit is of such an arrangement that the current control circuit corrects the current command signal in response to the speed detection signal to compensate an error in current control due to a counter electromotive force of a DC motor, while exercising a proportional control over the driving current in accordance with a current command deviation value of a driving current detection signal from the current command signal, so that the motor can be controlled at high speed and with high accuracy.