摘要:
An image input circuit, an image memory, an image processing circuit and an image output circuit are controlled by a host CPU through a host CPU bus and are connected by an image data bus so as to enable data transfer between each other. The image memory, image processing circuit and the image data bus for multiple-valued image and those for binary image are prepared. Consequently, storing, processing and transfer of multiple-valued image data and those for binary image data can be carried out independently from each other.
摘要:
Each of the processing circuits connected to an image data bus is adapted such that a delay of n transfer clocks (n is a positive integer) or an integer multiple thereof is generated between the input and output data. Therefore, the delay time of the whole processing circuit becomes an integer multiple of a fixed time period, no matter what pipeline structure is adopted to connect the processing circuits. An address counter connected to the image memory through an address bus delays one read address by a plurality of cascade connected delay circuits and outputs the same as write address with the output of respective delay circuit switched successively, so that it seemingly operates in the same manner as in the case where there are a number of write address counters.
摘要:
A processing circuit comprising a multiplying circuit, an ALU, a bit shift circuit, LUT, selectors, and constant registers can be adapted to various data processing as a whole processing circuit by appropriately changing the operation states of respective circuits and changing the setting of constant values. By combining a plurality of processing circuits, a data processing circuit capable of larger number of functions can be realized.
摘要:
A control circuit controls a hardware portion based on a microprogram set by a host CPU. Microinstructions constituting the microprogram comprise an instruction for setting an initial value of an address counter for reading microprogram as well as an instruction for controlling the hardware portion. The initial value setting instruction comprises an initial value setting instruction which uses the state of a flag register, which is set dependent on a change of state generated from the arithmetic processing in the hardware portion, as a condition. Therefore, the flow of reading of the microprogram can be changed corresponding to the change of the state generated by the arithmetic processing in the hardware portion.
摘要:
A plurality of registers for writing are connected to data input portions of respective memory devices and a plurality of registers for reading are connected to the data output portions thereof. A random access bus and a serial access bus are respectively connected to both of the registers for writing and the registers for reading. A control circuit controls the memory devices, registers for writing and the registers for reading to effect serial input/output control and random access control.
摘要:
A multi-picture image printing system includes a reception portion for receiving a plurality of recording mediums sequentially, each recording medium carrying a plurality of pictures; a multi-picture image generator operable to read the plurality of pictures recorded on each recording medium and generate a multi-picture image based on the read plurality of pictures; a printer operable to print the generated multi-picture image on a sheet; a medium discharger operable to discharge recording mediums; a sheet discharger operable to discharge printed sheets; a storing unit including a plurality of containers for containing discharged recording medium and printed sheet; and a controllers operable to control the medium discharger, sheet discharger, and the storing unit to place a recording medium and a printed sheet bearing a multi-picture image having pictures recorded on the recording medium in the same container.