Facsimile apparatus

• US 4,774,590 A
• Filed: 04/22/1986
• Issued: 09/27/1988
• Est. Priority Date: 04/24/1985
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Takeda, Takashi, Kaneko, Yoji, Kunishi, Kosuke, Ogata, Yukihiko, Yoshiura, Yoshio, Haganuma, Tomoyuki
• Primary Examiner(s): COLES, EDWARD L
• Application Number:
  US06/854,586
• Time in Patent Office: 889 Days
• Field of Search: 358/280, 358/256, 358/286, 358/261
• US Class Current: 358/444
• CPC Class Codes: H04N 1/32363 at the transmitter or at the receiver
• CPC Class Codes: H04N 1/32368 Functions of a still picture terminal memory associated with transmission
• CPC Class Codes: H04N 1/32379 Functions of a still picture terminal memory associated with reception
• CPC Class Codes: H04N 1/32496 Changing the task performed, e.g. reading and transmitting, receiving and reproducing, copying facsimile mode changing H04N1/333

Abstract

A facsimile apparatus has a CCU for receiving image data, a decoder for decoding received data, an image memory for storing the decoded data, a CPU for controlling send/receive operation, and a printer for printing received data. High-speed data communication can be performed using a small-capacity memory and a digital transmission line and without data loss.

Claims

1. A fascimile apparatus comprising:

means for receiving transmitted data;

a memory for storing page data corresponding to a plurality of received data;

means for printing information corresponding to the page data in units of pages; and

means for controlling read and write access of said memory,

said control means being adapted to start reading of one page for page printing by said print means, prior to completion of storage of the plurality of pages in said memory, and adapted to allow write access of said memory while said printing means is being operated.

2. A fascimile apparatus comprising:

means for receiving transmitted data;

a memory for storing page data corresponding to a plurality of received data;

means for controlling read and write access of said memory; and

means for printing information corresponding to the data stored in said memory,

3. said control means being adapted to start reading of one page out of said memory when an amount of data written in said memory reaches a predetermined value, and adapted to allow write access of said memory while said printing means is being operated.

4. A facsimile apparatus comprising:

means for receiving transmitted data;

memory means for storing data corresponding to at least one of received data and original image data;

means for generating one of data for printing and data for transmission; and

means for controlling read and write access of said memory means for data storage or data generation,

said memory means including a first memory area for storing data and read-accessible after completion of storage of a plurality of pages and a second memory area for storing data and read-accessible during storage of a plurality of pages.

5. A facsimile apparatus comprising:

means for receiving image data from a digital data transmission line;

means for decoding received image data;

a memory for storing data decoded by said decoding means, said memory storing at least one page of data;

means for printing information corresponding to the data from said memory in unit of pages; and

means for controlling read and write access of said memory for page printing by said print means, said control means being adapted to allow write access of said memory while said printing means is being operated.

6. An image processing apparatus comprising:

a memory for storing data corresponding to image data;

means for printing information corresponding to the data in units of pages; and

means for controlling read and write access of said memory,

said control means being adapted to start reading of one page for page printing by said printing means, prior to completion of data storage in said memory, and adapted to allow write access of said memory while said printing means is being operated.

7. An image processing apparatus comprising:

a memory for storing data of at least one page corresponding to image data; and

means for controlling read and write access of said memory,

said control means being adapted to perform read and write access of said memory to allow input of data exceeding a capacity of said memory and to interrupt reading of dat from said memory before completion of read-out of one page in dependence on a state of said memory.

8. An image processing apparatus comprising:

a memory for storing data corresponding to at least one page of image data;

means for controlling read and write access of said memory; and

means for printing information corresponding to the image data stored in said memory,

said control means being adapted to start reading of one page out of said memory when an amount of data written in said memory reaches a predetermined value, and adapted to allow write access of said memory while said printing means is being operated.

9. An image process apparatus comprising:

memory means for storing data corresponding to image data;

means for generating one of data for printing and data for transmission; and

means for controlling read and write access of said memory means for the data storage or data generations,

said memory means including a first memory area for storing data and read-accessible after storage of predetermined quantity of data and a second memory area for storing data and read-accessible during storage of the predetermined quantity of data.

10. An image processing apparatus comprising:

means for receiving image code data from a digital data line;

means for decoding received image code data;

a memory for storing data decoded by said decoding means, said memory storing at least one page of data;

means for printing information corresponding to the data from said memory in units of pages; and

means for controlling read and write access of said memory for page printing by said print means, said control means being adapted to allow write access of said memory while said printing means is being operated.