摘要:
A data processing device applied to a computed tomography system which examines a living body utilizing radiation of X-rays is disclosed. The X-rays which have penetrated the living body are converted into electric signals in a detecting section. The electric signals are acquired and converted from an analog form into a digital form in a data acquisition section, and then supplied to a matrix data-generating section included in the data processing device. By this matrix data-generating section are generated matrix data which correspond to a plurality of projection data. These matrix data are supplied to a partial sum-producing section. The partial sums respectively corresponding to groups of the matrix data are calculated in this partial sum-producing section and then supplied to an accumulation section. In this accumulation section, the final value corresponding to the total sum of the matrix data is calculated, whereby the calculation for image reconstruction is performed.
摘要:
Apparatus for calculating a plurality of interpolation values is adapted to calculate linear interpolation values, consisting of a second data train, from a first data train and includes a memory for storing the first data train and a calculator for calculating the interpolation value from the corresponding two data in the first data train read out of the memory. The calculator comprises an n-bit register for designating those addresses of the memory where data to be read out of the upper m-bit section of the n-bit register is stored and for determining weighted factor data for calculating the interpolation value at the lower (n-m) bit section of the register, a calculating unit for calculating the interpolation value from the data read out of the memory and the weighting coefficient data, an adder for adding a position increment value for designating the adjacent interpolation value to the register each time each interpolation value is calculated at the calculating unit, and a counter stepped one count for each calculation of each interpolation value and adapted to send an end signal to a central processing unit when a predetermined number of counts are completed. The memory, register, adder and counter are controlled by the central processing unit.
摘要:
A data processor used with a host computer is constructed by a plurality of memory units, at least one arithmetic and logic unit, a register file and a microprogram memory for storing microprograms to control these circuit components. The first field of each microinstruction of the microprogram is supplied to a first logic converting circuit of which the output signal drives each memory unit. The third field of the microinstruction is supplied to the second logic converting circuit of which the output signal causes the data stored in selected registers of the register file to be supplied to the arithmetic and logic unit. The arithmetic and logic unit operates upon the data supplied in accordance with the designation by the second field, and loads the result of the operation into the register specified by one of the outputs of the second logic converting circuit. Each logic converting circuit alters, in accordance to the control signal designated from the exterior, a combination of the corresponding field of a microinstruction.
摘要:
Disclosed is a relational algebra engine which has a sort engine, a merge engine, a control processor and a common bus. The sort engine has a plurality of first processing elements which are connected in series. Each first processing element includes first and second buffer memories, a first memory which has a FIFO function, and a first processor which sorts input data elements in accordance with a predetermined rule by using the first and second buffer memories and the first memory which has the FIFO function. The first and second buffer memories and the first memory which has the FIFO function are disposed in parallel. The merge engine has two second processing elements which are disposed in parallel. Each second processing element includes a third buffer memory, a second memory which has the FIFO function, a second processor which merges the data elements sorted in the sort engine by using the third buffer memory and the second memory which has the FIFO function and an output buffer memory which stores the data elements merged in the second processor. The third buffer memory is disposed parallel to the second memory which has the FIFO function.
摘要:
In a data processing system having a slave computer connecting to a host central processing unit and a host main memory, the slave computer has no internal random access memory and includes an arithmetic logic operating means. The arithmetic logic operating means calculates an address of the host main memory. A DMA interface directly makes an access to the host main memory to fetch operand data into the slave computer. The arithmetic logic operating means computes the operand data under control of a microprogram control section and directly loads the computed result to the host main memory through the DMA interface.
摘要:
A fixture 3 for fixing an article to be fixed, such as a workpiece 2, to a fixture base 1 comprises a fixture body 5 detachably mountable on a mounting object, such as the fixture base 1. A linking member 4 is detachably mountable on the workpiece 2. The fixture body 5 comprises a body section 6 comprising an insertion hole 12 into which the linking member 4 is to be inserted, a rotary section 7 which is rotatably fitted onto the body section 6 so as to cover an outer peripheral portion 6b thereof, and a ball 8a protruding into the insertion hole 12 via a through hole 13 formed in the body section 6 for engagement with the linking member 4. Furthermore, a pushing portion 19 which causes the ball 8a to protrude into the insertion hole 12 when the rotary section 7 is moved in one of axial directions thereof is provided at the inner surface 7c of the rotary section 7.
摘要:
A clamping device has a base body, a pressing body for pressing a workpiece and a rotationally operable rotary body, all of which are rotatable relative to each other about an axis. The pressing body can rotate between a first rotary position at which the pressing body does not face the workpiece and a second rotary position at which the pressing body faces the workpiece. The pressing body can move between a press releasing position and a pressing position while being at the second rotary position. When the rotary body is rotated from one rotary position to a middle rotary position, the pressing body rotates from the first rotary position to the second rotary position as the rotary body rotates. When the rotary body is rotated to another rotary position, the pressing body is moved from the press releasing position to the pressing position by a cam mechanism.
摘要:
A manipulator having a grasping mechanism for grasping an object and an arm mechanism for lifting the grasped object, is disclosed. A weight detector is provided which detects a force that the top of the arm mechanism receives in the gravitational direction when the grasped object is being lifted. In order to find the minimum grasping force sufficient to lift the object, a grasp detector is provided for detecting, from the output of the weight detector, that the object cannot be lifted up with the present grasping force and a desired grasping force selector for selecting successively a desired value of grasping force starting from a predetermined minimum desired value until it is detected that the object is lifted. A grasping force control circuit controls the grasping force to the selected desired value.
摘要:
To provide a clamp device capable of simply clamping an object to and removing it from a support base. In the clamp device, a body, a pressing member for pressing a workpiece, and a rotary member are allowed to rotate relative to each other. The pressing member rotates between a first rotary position not facing the workpiece and a second rotary position facing the workpiece. In the second rotary position, the pressing member is also movable between a press releasing position and a pressing position. Here, when the rotary member is rotated from one rotary position to a middle rotary position, the pressing member, while being held in the press releasing position by a holding means, is rotated by a contact means from the first rotary position to the second rotary position as the rotary member rotates. Next, when the rotary member is rotated to another rotary position, the pressing member, while remaining in the second rotary position by the rotary range restricting means, is moved to the pressing position by an interlock means.
摘要:
A clamping device that can reduce a burden on a worker and can surely fix an object includes a basic body, a pressing section for pressing a workpiece, a manually operable operating section, and a transmitting body. The transmitting body transmits a movement of the operating section to the pressing section so that the pressing section travels between a pressing position, at which the pressing section presses the workpiece, and a standing-by position, at which the pressing section is spaced apart from the workpiece to stand by. The basic body has a second opposing section opposing a first opposing section which belongs to the transmitting body. The second opposing section has a pressurizing member resiliently urged in a direction in which the pressurizing member goes from the second opposing section toward the first opposing section. The first opposing section has a pressurized surface which the pressurizing member pressurizes. The pressurized surface has a first depression which the pressurizing member is on the point of entering when the pressing section is placed at the pressing position.