Abstract:
A recording apparatus (111) includes a receiving unit (112) for receiving an image signal sent from an external apparatus (110), and a recording unit (104) for performing a recording operation in accordance with the image signal received by the receiving unit. The receiving unit includes a clock signal generating unit (82) for generating a clock signal used when receiving the image signal; and includes a first reception mode where the image signal is received without using the clock signal and a second reception mode where the image signal is received by using the clock signal. The receiving unit may include a first reception mode where the image signal is received by using a clock signal (on 80) sent from the external apparatus and a second reception mode where the image signal is received without using the clock signal. The receiving unit may include a clock signal generating unit for generating a clock signal used when receiving the image signal, a first reception mode where the image signal is received in accordance with the clock signal sent from the external apparatus and a second reception mode where the image signal is received by sending the clock signal generated by the clock signal generating unit to the external apparatus.
Abstract:
The invention provides a device to be connected to a telephone line and, alternatively, to a telephone set or a printer. The device comprises switch means for automatically operating the one or the other connection according to the signals received through the line. When modulated telefax signals are received, they are transmitted to modem means which transform said signals to sequential digital signals, these are stored in a buffer memory, at least to an extent corresponding to a line of print, and they are then transformed by microcircuit means to matrix digital signals, which are transferred to the printer. Fax messages transmitted through the telephone line are thus automatically printed out. The invention also provides a printer, which incorporates modem means, a buffer memory and microcircuit means for performing the aforesaid operations, through which the printer may selectively be connected to a telephone line, and which may be by-passed to connect the printer to a computer. The invention also provides a message receiving system, which comprises a printer and means for selectively connecting the system to a computer or to an interface interposed between the printer and a telephone line, which comprises a modem, a buffer memory and microprocessor means for converting sequential digital information to matrix digital information.
Abstract:
A network (A) carries large image blocks among medical diagnostic equipment (20, 22, 24), archive computer (26), and data handling and display stations (28, 30). Four kilobyte packets of 4 megabyte image blocks are moved from transmit buffers (38) to queuing buffers (42). The order in which packets from the queuing buffers are transmitted on the network medium (10) is determined by a combination of an assigned priority, duration in the buffer, and a statistical availability of the addressed receiving node. A data link (52) at the receiving node includes an elasticity buffer (122) which stores a small plurality of bits, e.g. 5, to accommodate for variances in the clock speed of the transmitting and receiving nodes. A buffer table (60) monitors memory addresses at which preceding data packets corresponding to t he same image are stored and provides address information to send each subsequently received packet. Before transmitting the image data packet, the transmitting node data link first sends a query to the receiving node to check availability to avoid the transmission of relatively large data packets to unavailable nodes. Each transmitting node normally passes a token after it has transmitted one packet of data. When the transmitting node holds the token for several sequential data packet transmissions, it passes a restricted token which allows the other nodes to transmit high priority small messages that are much smaller than the image data packets.
Abstract:
A photographic film printer that forms an image on film based upon received or stored digital information is provided. While maintained in a stationary position, the film is exposed in a sequence of raster scans by a rotating disk traversing the photographic film surface. At least one optical film is attached to the rotating disk in a manner that transmits optical energy directed towards the center of the disk to a peripheral location on the disk. Exposure of the film occurs by controlling the emission of optical energy by the fiber in accordance with the received or stored digital information as the peripheral edge of the disk rotates past the film surface.
Abstract:
A method for transmission of a sequence of high quality images for display on a visual display unit is described. It has particular application in the field of telepathology, where magnified images obtained by scanning a medical specimen on the stage of an optical microscope are transmitted from a local pathologist to a remote consultant for diagnosis. The method consists of the steps of advancing the field of view of the camera in discrete steps across the object being viewed to capture a sequence of contiguous images, temporarily storing a digital representation of a first of the images in a first buffer store and a digital representation of at least part of the next succeeding image in a second buffer store, controlling the data in the two buffer stores such that the data follows the leading edge of the advancing viewport and data in the first store representing a trailing incremental strip of the first stored image is progressively discarded while data in the second store representing a trailing incremental strip of the next contiguous image is transferred to a location in the first store occupied by the data representing leading incremental strip of the first stored image, and reading out the contents of the first buffer store to the display unit.
Abstract:
A printing system includes a host computer and a printer. The host computer includes a memory which store process steps that are executable by a processor, and a processor. The processor executes the process steps stored in the memory (1) to divide encoded image data in a page of encoded image data into blocks, each block having a size which is less than a storage capacity of a buffer on a printer, and (2) to transmit the blocks of encoded image data to the printer. The printer includes a memory which stores process steps that are executable by a processor, and a processor. The processor executes the process steps stored in the memory (1) to store a predetermined amount of encoded image data in a buffer, (2) to control a printer engine to print images based on the encoded image data stored in the buffer, and (3) to store additional encoded image data, comprising blocks of the encoded image data, in the buffer in place of the encoded image data for which images have been printed.
Abstract:
An image forming apparatus includes: an image reading device for reading an image to generate image data; a memory capable of writing and reading data in parallel, for storing the generated image data; an image forming device driven by a scan-writing clock having a frequency different from that of a reading clock of the image reading device for reading the image data stored in the memory, thereby to form the image; and a timing control device for shifting a timing for writing the image data in the memory from the image reading device and a timing for the image forming device to read the image data from the memory, and for controlling the image forming device to continuously read the image data in a predetermined quantity from the memory. The image reading device writes the image data in the memory at a unit of data in the predetermined quantity.
Abstract:
A printing system includes a host computer and a printer. The host computer includes a memory which store process steps that are executable by a processor, and a processor. The processor executes the process steps stored in the memory (1) to divide encoded image data in a page of encoded image data into blocks, each block having a size which is less than a storage capacity of a buffer on a printer, and (2) to transmit the blocks of encoded image data to the printer. The printer includes a memory which stores process steps that are executable by a processor, and a processor. The processor executes the process steps stored in the memory (1) to store a predetermined amount of encoded image data in a buffer, (2) to control a printer engine to print images based on the encoded image data stored in the buffer, and (3) to store additional encoded image data, comprising blocks of the encoded image data, in the buffer in place of the encoded image data for which images have been printed.