Abstract: A method for measuring the diameter and eccentricity of a crankpin of a crankshaft which is ground on a grinding machine. A reference plate is provided on a headstock, which is disposed on a table to support the crankshaft. A measurement apparatus having a probe is disposed on a wheel head. Through movements of the table and the wheel head, the probe is first brought into contact with a reference surface of the reference plate, and is then brought into contact with the outer circumferential surface of the crankpin at outermost and innermost points. The distances between the reference surface and the outermost and innermost points are measured, and the diameter and eccentricity of the crankpin are calculated on the basis of the measured distances and the position of the reference surface.

Abstract: A receiver including: a data regeneration mechanism that receives and regenerates data transmitted in units of a packet; a storage device in which received data is stored; a packet ID extraction unit that extracts a packet ID indicating a packet to be re-received; and a retransmission request unit that transmits retransmission request information, which requests retransmission of a packet to be re-received, to a transmitter. The transmitter retransmits only a packet, which is identified with a packet ID specified in the retransmission request information sent from the receiver, to the receiver. The receiver overwrites data, which is stored in the storage device, with data contained in a packet retransmitted from the transmitter. There is thus provided a recovery system for restoring data, which is preserved in the storage device, while regenerating data without stopping a motion picture irrespective of whether a lost packet is present.

Abstract: A combination grinding machine grinds a plurality of axially arranged portions of a workpiece by use of a grinding wheel supported rotatably on a first wheel head and a superfinishing wheel supported rotatably on a second wheel head. A numerical control unit controls feed units for the first and second wheel heads in order to move the first and second wheel heads independently of each other in the axial direction of the workpiece and in the direction perpendicular to the axial direction, such that each of the axially arranged portions is ground by the grinding wheel, and simultaneously with this, another ground portion is superfinished by the superfinishing wheel.

Abstract: A method for measuring the diameter and eccentricity of a crankpin of a crankshaft which is ground on a grinding machine. A reference plate is provided on a headstock, which is disposed on a table to support the crankshaft. A measurement apparatus having a probe is disposed on a wheel head. Through movements of the table and the wheel head, the probe is first brought into contact with a reference surface of the reference plate, and is then brought into contact with the outer circumferential surface of the crankpin at outermost and innermost points. The distances between the reference surface and the outermost and innermost points are measured, and the diameter and eccentricity of the crankpin are calculated on the basis of the measured distances and the position of the reference surface.

Abstract: A terminal management device manages the sharing by at the least one business entity of costs related to distributed terminal devices. In a case that a new business entity, which uses the terminal devices and provides services after the terminal devices have been distributed, the terminal management device computes and totals the differences of shared costs of each business entity, which will change in accordance with the addition thereof. Thus, by managing the changes of a plurality of business entities bearing the costs related to terminal devices, changes in the shares of the costs thereof can be adjusted easily even in a case that business entities using the terminal devices thereof and providing services change after the terminal devices have been distributed to subscribers. Therefore, the present invention facilitates the participation of a new service business entity in the provision of services using terminal devices subsequent to the terminal devices being distributed.

Abstract: A grinding machine includes a spindle head for rotatably driving a crankshaft around a journal center as a rotational axis and, two wheel heads that support respective two grinding wheels and that advance and retract in a direction perpendicular to the rotational axis independently with each other. Two of plural pin portions of the rotating crankshaft are simultaneously ground by the respective two grinding wheels, in which rotational phases of the two pin portions are different from each other. Further, the rotational phases of the two pin portions are stored as a combination in a memory. The two pin portions are simultaneously ground in accordance with the combination by the respective two grinding wheels.

Abstract: In a plant supervisory system, many computers (functional servers) that distributively perform functions are connected through two types of transmission paths (such as a control bus and an information bus). The control bus is used to transmit periodic data such as process data. Event data is transmitted through the information bus. Thus, many computers can be connected. In addition, the latest value of process data can be referenced by each computer.

Abstract: In a multi-location television conference system that connects five locations A, B, C, D, and E, when speeches take place at the four locations A, B, C, and D at the same time, at a listening location E, images of all the speaking locations A, B, C, and D are displayed on one screen with four divided screen areas. On the other hand, at the speaking location A, images of the speaking locations B, c, and D and an image of the former speaking location E are displayed on one screen with four divided screen areas. In addition, when images of speaking locations are displayed, locations names thereof are also displayed. Thus, a television conference held at a plurality of locations at a time can be smoothly managed as with a real conventional conference.

Abstract: A multi-site video conference control system comprising a number of video conference terminals respectively situated at a number of sites and a video conference control unit for controlling a video conference. A communication line interface provided at each terminal makes a single calling with respect to the video conference control unit. A connection data section, which is provided at each terminal, manages connection data for other terminals to be connected and transmits the connection data to the video conference control unit. A control calling section, which is provided at the video conference control unit, calls the terminal corresponding to the connection data to be transmitted from the connection data section, based on the single calling. A connection controller, which is provided at the video conference control unit, connects the calling terminal, whose communication line interface made the single calling, and the other terminals called by the control calling section, with communication lines.

Abstract: In a multi-location television conference system that connects five locations A, B, C, D, and E, when speeches take place at the four locations A, B, C, and D at the same time, at a listening location E, images of all the speaking locations A, B, C, and D are displayed on one screen with four divided screen areas. On the other hand, at the speaking location A, images of the speaking locations B, c, and D and an image of the former speaking location E are displayed on one screen with four divided screen areas. In addition, when images of speaking locations are displayed, locations names thereof are also displayed. Thus, a television conference held at a plurality of locations at a time can be smoothly managed as with a real conventional conference.

Abstract: A multipont TV conference system including a multipoint control unit connected with TV conference rooms through a communication network. The multipoint control unit includes: a register for registering names of TV conference rooms and groups, telephone numbers and seats of the rooms and flags indicating the room of a TV conference promoter, the room selected for participating the TV conference and the room not corresponding to calls from the multipoint control unit; and a control unit to control process, performed among the rooms by using registered matter in the register and images of the rooms, for selecting the room and the group, holding a TV conference, participating in a TV conference, intermediately participating in the TV conference and prohibiting the room not participating in a TV conference from observing images of and listening voice in other rooms under holding TV conferences.

Abstract: A spindle apparatus for supporting and rotating a workpiece in a grinder. The spindle apparatus includes a workpiece spindle rotatably supported on a spindle head and driven for rotation by a motor, and a spindle plate mounted to the front end of the workpiece spindle and including an eccentric drive pin. The workpiece spindle has a bore in which a ram is axially movable. A center is fit in the front end of the ram. A unit is provided to advance the ram to engage with one end of the workpiece when the workpiece is to be supported. A rotary sleeve is rotatably supported on the front end of the ram and includes an engagement portion which is displaceable in the axial direction of the spindle and engageable with the drive pin in the direction of rotation. A driving unit is mounted to the front of the rotary sleeve to engage the workpiece in the direction of rotation when the ram is in its advanced position to thereby transmit rotation.

Abstract: A method for truing a grinding wheel having a non-straight cylindrical grinding surface. In truing operation, a truing tool is caused to contact different portions of the grinding surface, and relative position of the truing tool is detected when the truing tool contacts the respective portions. Then, a first portion rom which a largest amount of abrasive layer must be removed, and a second portion from which a smallest amount of abrasive layer must be removed are found out. Based upon the detected positions, the radial location of an initial truing start position and a truing operation end position are calculated. The truing tool is initially moved to the initial truing start position, and then traversed from the truing start position along a locus corresponding to a desired final shape of the grinding wheel. The radial location of the truing start position is then shifted in a direction of approaching to the rotational axis of the grinding wheel, and the traverse movement is repeated.

Abstract: The television camera of a video telephone set can easily be focused on the image of an object, such as a sheet of paper, through an inexpensive focusing apparatus. An indication corresponding to the size of the sheet is displayed on a display unit. The size of the displayed indication is determined depending on the distance, as detected by a zoomed distance detector, by which the lens of the television camera is zoomed. The position of the television camera is moved with respect to the object until the edges of the sheet are aligned with the indication displayed on the display screen of the display unit. When the edges of the sheet are aligned with the displayed indication, the television camera is sharply focused on the displayed image of the object. The size of the displayed indication, which indicates the actual size of the sheet, is determined based on an inputted sheet size and the detected distance by which the lens is zoomed. The television camera can thus be focused on the displayed image with ease.

Abstract: An apparatus for loading and unloading a workpiece between a working position of a machine tool and a waiting position provided outside the machine tool. The apparatus comprises a rotational shaft which is supported to be rotatable about its axis extending in parallel with an axis of a work spindle, and is rotated in a clockwise direction or a counterclockwise direction within a required rotational angle by an actuator. On a bracket fixed on one end of the rotational shaft, there are installed a loading arm unit and an unloading arm unit. The loading arm unit and the unloading arm unit are arrayed in a direction of the axis of the work spindle, and extend in an up-and-down direction along a pair of lines, which intersect with each other at a predetermined angle so as to interact at the working position, respectively. Each of the loading arm unit and the unloading arm unit has a pair of gripping claws extending in a direction which is normal to the axis of the work spindle.

Abstract: A joint structure includes a sandwiched structural body comprising a core layer having opposite surfaces and a pair of first and second outer skin layers covering the opposite surfaces, respectively, and a substantially concave joint region defined in the first outer skin layer and comprising a side wall and a bottom wall contiguous to the side wall, the bottom wall being joined to the second outer skin layer. The side wall of the joint region is of a tapered shape. The sandwiched structural body is formed primarily of synthetic resins, and may additionally include reinforcing fibers.

Abstract: Disclosed is a suspension having an improved transverse leaf spring with its longitudinal axis extending transversely of a car body. The leaf spring is operatively associated at opposite ends with the right and left wheels of a car and is curved along its intermediate length in the direction in which the car moves ahead or back. The curved portion may be along a full length of the leaf spring or along a length defines between support points on the leaf spring, and in the latter case, lengths extending from the respective support points to the ends of the leaf spring most adjacent thereto remain linear to form linear portions extending substantially perpendicularly with respect to respective suspension arm rocking shafts. Various forms of support elements are described for securing the leaf spring for only pivotal movement about one of the support points and both pivotal and linear movement about the other thereof.

Abstract: A phase lock circuit includes a control signal generator which generates a control signal changing for every frame consisting of an odd-numbered field and an even-numbered field in a reproduction mode. The control signal has a first level for a frame and a second level for a subsequent frame. The phase lock circuit further includes a first PLL circuit and a second PLL circuit. The first PLL circuit generates a first synchronizing signal which is phase-locked with a reproduced synchronizing signal for every other frame when the control signal is at the first level. The second PLL circuit generates a second synchronizing signal which is phase-locked with the reproduced synchronizing signal for every other frame when the control signal is at the second level. Furthermore, the phase lock circuit includes a select circuit which selects one of the first and second synchronizing signals supplied from the first and second PLL circuits on the basis of the control signal.

Abstract: A steering system for a vehicle with a steerable front wheel (5) and a rear wheel (11) controlled to be steered in accordance with a travelling state representative quantity (.delta..sub.f, V,.alpha..sub.a), wherein the rear wheel is steered taking into account at least a ratio of a cornering power (Kr) thereof to a vertical load on the tire thereof, besides the travelling state representative quantity.

Abstract: A power unit mounting structure in a motor vehicle includes a power unit comprising an engine having a crankshaft, a transmission coupled to the crankshaft of the engine, and a differential interposed between drive axles connected to a pair of laterally spaced front road wheels of the motor vehicle and the transmission. The power unit is mounted in a front portion of the motor vehicle with its center of gravity positioned rearwardly of the drive axles extending from the differential toward front road wheels serving as the drive road wheels. A steering gearbox extends parallel to the drive axles and is disposed forwardly of the drive axles.