Abstract: Depth information generating section generates depth image information representing the class of the depth of each pixel in two-dimensional image information outputted from an image input section, according to depth information outputted from an input section. A stereoscopic image information generating section generates stereoscopic image information, based on the depth image information and the two-dimensional image information. Thereafter, an image for the left eye and an image for the right eye read by an image information output section are alternately displayed on the screen of an image display section under the control of a gate. In synchronization with the change-over operation of alternately displaying the image for the left eye and the image for the right eye, the stereoscopic section controls the opening and closing of liquid crystal shutters of liquid crystal shutter glasses.

Abstract: An electronic sewing machine capable of sewing a buttonhole having a circular stitching part. The machine is operative selectively in one of automatic and manual modes. In the automatic mode, bight position of a needle and feed position of a feed dog are automatically controlled according to stored bight and feed data. In the manual mode, the bight and feed positions determined by the stored data are adjusted by a data adjusting circuit. The machine comprises a circuit which supplies the data adjustment circuit with a signal to inhibit the adjustment of at least the feed data for each stitch to be formed in the circular stitching part.

Abstract: An electronic sewing machine capable of forming a buttonhole having a circular stitching part. The machine has manually operated members for setting thread thickness and button size. A stitch data generator is provided, which is capable of selectively generating one of plural different groups of stitch data for forming different buttonholes which have a different number of stitches at their circular stitching part. The specific group of stitch data is selected according to code signals fed in accordance with the positions of the manually operated members. The position of each stitch contained in the circular stitching part of the buttonhole is determined by each stitch data of the selected group. Thus, the desired buttonhole is sewn neatly without crowded or lean stitches.

Abstract: A buttonhole sewing machine for automatically forming a buttonhole including right and left parallel side stitching parts, and another stitching part connected to the side stitching parts. The machine has a switch for detecting front and rear ends of each side stitching part, and is capable of sewing the buttonhole in divided parts on opposite sides of a longitudinal centerline thereof so that the two side stitching parts are stitched in the same work feeding direction. The machine comprises a control circuit generating a feed change signal when the number of stitches being formed in one of the side stitching parts has become equal the total number of stitches of the other side stitching part less a predetermined number, and a feed adjusting circuit for reducing a work feeding increment for a time interval between generation of the change signal and a signal from the switch, to avoid a difference in length between the side stitching parts.

Abstract: A motor speed control system comprising a digital control circuit for working out and storing digital control signals in response to digital speed detection signals representing detected actual motor speeds and to digital speed command signals representing commanded nominal motor speeds, and further comprising an analog control circuit for controlling power supply to the motor in accordance with analog control signals corresponding to the digital control signals and with analog speed detection signals representing the detected actual motor speed. The digital control circuit receives the digital speed detection and command signals and produces, in a predetermined cycle, the digital control signal which is prepared based on a difference between the detected actual speed and the commanded speed of the motor, without being affected by ambient conditions of the system and drifts of control elements of the circuit during service.