Abstract: When a slewing motor is at a stop, a first slewing control unit of a controller that controls an operation of the slewing motor sets a first monitoring area that is set with respect to a slewing body as a designated area, and then controls, depending on whether an obstacle is detected in the first monitoring area, whether to prohibit or allow start of the slewing motor in response to a drive manipulation. Furthermore, a second slewing control unit of the controller sets one or more second monitoring areas that are set at places remoter from the slewing body than the first monitoring area as the designated area, and then controls, depending on whether the obstacle is detected in the second monitoring area(s), whether to limit the operation of the slewing motor in response to the drive manipulation after the start of the slewing motor is allowed.

Abstract: An obstacle detection device detects an obstacle existing in one or more monitoring areas that are set to correspond to a movable part. A state determination unit determines whether a state of the actuator is a standby state or a suspended state under circumstances where the actuator is at a stop. On determination that the state of the actuator is the standby state, a display control unit executes automatic image output that is processing for causing a display device to display a monitoring image corresponding to a monitoring area in which the obstacle is detected out of the one or more monitoring areas. On determination that the state of the actuator is the suspended state, the display control unit stops the execution of the automatic image output.

Abstract: A liquid crystal display device includes liquid crystal pixels arrayed substantially in a matrix, a vertical driving circuit that selects the rows of pixels for video signal writing and for non-video signal writing, a horizontal driving circuit that writes a video signal in the pixels of a row selected for the video signal writing and a non-video signal in the pixels of a row selected for the non-video signal writing, and a control circuit that controls operation timings of the horizontal driving circuit and vertical driving circuit. In particular, the vertical driving circuit is configured to set a selection pattern for disabling an overlap between a selection period of selecting the pixels of each row for the video signal writing and a selection period of selecting the pixels of another row for the non-video signal writing, based on enable signals from the control circuit.

Abstract: A display control circuit includes a driver circuit DR which drives a plurality of pixels, and a driver control circuit which controls the driver circuit. The driver control circuit includes a control bus which transfers instruction data, an operation setting unit which executes operation settings in accordance with the instruction data from the control bus, and a gateway unit provided for a case in which the instruction data is internally generated and output to the control bus, and is capable of enabling or disabling an instruction data output to the control bus in accordance with a control input signal.

Abstract: A liquid crystal display device includes a liquid crystal display panel, a backlight which illuminates the liquid crystal display panel, and a display control circuit which controls the liquid crystal display panel and the illumination light source. The display control circuit includes a panel driving section which drives the liquid crystal display panel after supply of power, a state detecting section which detects a display driving state that the panel driving section drives the liquid crystal display panel for display of a stable image corresponding to a video signal, and a light source driving section which drives the backlight in accordance with an illumination request signal, after detection of the display driving state by the state detecting section.

Abstract: A first path for directly inputting a control signal from the outside to a data signal processor and a second path for inputting a control signal generated by a bus interface to the data signal processor can be selectively switched by a switching portion. At the test time of a timing controller, the first path is selected by the switching portion so that the control signal is directly input to the data signal processor without being passed through the bus interface having a slow operation clock, and thus the timing controller can be reliably tested. At the normal use time, the second path is selected by the switching portion, thereby the control signal is input via the bus interface to various kinds of processors such as the data signal processor, and thus the normal operation can be reliably treated.

Abstract: A liquid crystal display device comprises a liquid crystal display panel including a plurality of pixels are arrayed substantially in a matrix, and a display control circuit which sequentially selects the rows of pixels in synchronism with a horizontal period of a sync signal externally supplied together with a video signal, and drives the pixels of a selected row in accordance with pixel data items obtained from the video signal for each horizontal period. The display control circuit includes a clock generator which generates a reference clock signal of a constant frequency, a period detector which detects a length of the horizontal period as the number of pulses of the reference clock signal, and a drive timing generator which adjusts a row selection period based on the number of pulses detected by the period detector.

Abstract: A first path for directly inputting a control signal from the outside to a data signal processor and a second path for inputting a control signal generated by a bus interface to the data signal processor can be selectively switched by a switching portion. At the test time of a timing controller, the first path is selected by the switching portion so that the control signal is directly input to the data signal processor without being passed through the bus interface having a slow operation clock, and thus the timing controller can be reliably tested. At the normal use time, the second path is selected by the switching portion, thereby the control signal is input via the bus interface to various kinds of processors such as the data signal processor, and thus the normal operation can be reliably treated.

Abstract: A liquid crystal display device includes liquid crystal pixels arrayed substantially in a matrix, a vertical driving circuit that selects the rows of pixels for video signal writing and for non-video signal writing, a horizontal driving circuit that writes a video signal in the pixels of a row selected for the video signal writing and a non-video signal in the pixels of a row selected for the non-video signal writing, and a control circuit that controls operation timings of the horizontal driving circuit and vertical driving circuit. In particular, the vertical driving circuit is configured to set a selection pattern for disabling an overlap between a selection period of selecting the pixels of each row for the video signal writing and a selection period of selecting the pixels of another row for the non-video signal writing, based on enable signals from the control circuit.

Abstract: A display control circuit includes a driver circuit DR which drives a plurality of pixels, and a driver control circuit which controls the driver circuit. The driver control circuit includes a control bus which transfers instruction data, an operation setting unit which executes operation settings in accordance with the instruction data from the control bus, and a gateway unit provided for a case in which the instruction data is internally generated and output to the control bus, and is capable of enabling or disabling an instruction data output to the control bus in accordance with a control input signal.

Abstract: A display panel control circuit includes a controller which processes external image data and sync signals from an external signal source, and source and gate drivers which drive a display panel on the basis of processed results from the controller. The controller is configured to provide predetermined internal image data and sync signals which are generated immediately after supply of power and processed instead of the external image data and sync signals, and whose processing results are temporarily output to the source and gate drivers.

Abstract: An array substrate includes a plurality of signal lines (X1–Xm) in a display unit (DSP). One switching element is connected per row to each signal line. A switching element in the Nth row of the Mth pixel column and a switching element in the (N+1)th row of the (M+1)th pixel column are connected to the same signal line, and video signals having opposite polarities are supplied to adjacent signal lines.

Abstract: A liquid crystal display device comprises a liquid crystal display panel including a plurality of pixels are arrayed substantially in a matrix, and a display control circuit which sequentially selects the rows of pixels in synchronism with a horizontal period of a sync signal externally supplied together with a video signal, and drives the pixels of a selected row in accordance with pixel data items obtained from the video signal for each horizontal period. The display control circuit includes a clock generator which generates a reference clock signal of a constant frequency, a period detector which detects a length of the horizontal period as the number of pulses of the reference clock signal, and a drive timing generator which adjusts a row selection period based on the number of pulses detected by the period detector.

Abstract: A liquid crystal display device includes a liquid crystal display panel, a backlight which illuminates the liquid crystal display panel, and a display control circuit which controls the liquid crystal display panel and the illumination light source. The display control circuit includes a panel driving section which drives the liquid crystal display panel after supply of power, a state detecting section which detects a display driving state that the panel driving section drives the liquid crystal display panel for display of a stable image corresponding to a video signal, and a light source driving section which drives the backlight in accordance with an illumination request signal, after detection of the display driving state by the state detecting section.

Abstract: A liquid crystal display device includes a liquid crystal display element section that is initialized such that the alignment state of liquid crystal molecules is transitioned from a splay alignment to a bend alignment capable of displaying an image, and a driving circuit DR that cyclically applies, after the initialization, to the liquid crystal display element section a reverse transition prevention voltage, which prevents reverse transition from the bend alignment to the splay alignment, and a display voltage corresponding to a display signal supplied externally. In particular, the driving circuit DR is configured to alter a reverse transition prevention driving condition on the basis of a field frequency of the display signal.

Abstract: A display control circuit includes a vertical timing control circuit that generates first and second start signals, a panel driving unit that sequentially drives OCB liquid crystal pixels in units of one row under the control of the first start signal to hold pixel voltages for gradation display in the pixels of the driven row, and that sequentially drives the pixels in units of at least one row under the control of the second start signal to hold pixel voltages for black insertion in the pixels of the driven row, and a light source driving unit that drives backlight sources, which are arranged substantially in parallel to the rows of the pixels to divide the pixels into groups each including at least two neighboring rows of pixels, and each of which principally illuminates the pixels of the associated group.

Abstract: A light source device includes lamp-type light sources which respectively illuminate display areas obtained by dividing a screen of a display panel, and a backlight drive circuit which drives the lamp-type light sources. Particularly, the backlight drive circuit includes a dimmer control circuit which generates dimmer control signals having a common duty ratio which is changed to define ON time for each preset period of time and being set to different phases, and driving units which respectively drive the lamp-type light sources according to the dimmer control signals generated from the dimmer control circuit.

Abstract: An array substrate includes m pixel columns in each of which n pixels PX are arranged in an effective display portion DSPeff, and dummy pixel columns obtained by arranging dummy pixels outside the effective display portion DSPeff. Each pixel and each dummy pixel include a switching element placed at the intersection of each scanning line and each signal line. One switching element is connected per row to each signal line. A switching element in the Nth row of the Mth pixel column and a switching element in the (N+1)th row of the (M+1)th pixel column are connected to the same signal line, and video signals having opposite polarities are supplied to adjacent signal lines.

Abstract: An array substrate includes a plurality of signal lines (X1-Xm) in a display unit (DSP). One switching element is connected per row to each signal line. A switching element in the Nth row of the Mth pixel column and a switching element in the (N+1)th row of the (M+1)th pixel column are connected to the same signal line, and video signals having opposite polarities are supplied to adjacent signal lines.