Data communication apparatus and facsimile apparatus
    4.
    发明授权
    Data communication apparatus and facsimile apparatus 失效
    数据通信装置和传真装置

    公开(公告)号:US06388770B1

    公开(公告)日:2002-05-14

    申请号:US08545114

    申请日:1995-10-19

    IPC分类号: H04N136

    CPC分类号: H04N1/32791 H04N1/32702

    摘要: A facsimile communication system and a communication apparatus reduce a loss time due to the synchronization of transmission/reception and shorten a communication time. They also shorten a communication time in a full duplex communication mode and allow proper switching of the full duplex communication at the transmission/reception replacement. DIS-CFR signals, EOP-DCN signals, NSS-TSI signals and TSI-DCS signals of a facsimile communication protocol are connected by synchronization signals so that the synchronization signals are sent even after the sending of the protocol signal. Thus, the sending of the synchronization signal for one second when the next protocol signal is sent is not necessary and a time required for the protocol signal is shortened. An ANSam signal to disable a function of an echo suppressor is sent when a call is detected and a calling station thereafter sends a protocol signal and an image signal in a manner not to cause signal interruption of 50 ms or longer, and at transmission/reception replacement at the end of the image signal from the calling station, a called station sends an ANSam signal and sends a protocol signal.

    摘要翻译: 传真通信系统和通信装置由于发送/接收的同步而减少丢失时间并缩短通信时间。 它们还缩短了全双工通信模式下的通信时间,并允许在发送/接收更换时正确切换全双工通信。 传真通信协议的DIS-CFR信号,EOP-DCN信号,NSS-TSI信号和TSI-DCS信号通过同步信号连接,使得甚至在发送协议信号之后也发送同步信号。 因此,当发送下一个协议信号时,同步信号发送1秒是不必要的,并且协议信号所需的时间被缩短。 当检测到呼叫时,发送禁止回波抑制器的功能的ANSam信号,并且呼叫站此后以不使信号中断为50ms以上的方式发送协议信号和图像信号,并且在发送/接收 在呼叫站的图像信号结束时进行替换,被叫站发送ANSam信号并发送协议信号。

    Facsimile apparatus
    5.
    发明授权
    Facsimile apparatus 失效
    传真机

    公开(公告)号:US4193097A

    公开(公告)日:1980-03-11

    申请号:US899724

    申请日:1978-04-25

    IPC分类号: H04N1/411 H04N7/12

    CPC分类号: H04N1/411

    摘要: This invention relates to the reduction in time required for signal transmission in facsimile apparatus, and consists of a transmitting apparatus adapted for eliminating the signal indicating the line thickness from the binary image signal obtained by scanning the original to be transmitted and transmitting thus obtained band-compressed transmission signal, and a receiving apparatus adapted for adding a signal approximately equal to the above-mentioned signal indicating the line thickness to the above-mentioned transmission signal thereby forming received image.

    摘要翻译: 本发明涉及传真装置中信号传输所需的时间的减少,并且包括一种发射装置,其适用于从通过扫描待传送的原稿获得的二进制图像信号中消除指示线路厚度的信号, 压缩的发送信号,以及适于将与上述表示线路厚度的信号大致相等的信号添加到上述发送信号的接收装置,从而形成接收图像。

    Method and apparatus for facsimile recording
    7.
    发明授权
    Method and apparatus for facsimile recording 失效
    用于传真录制的方法和装置

    公开(公告)号:US4264933A

    公开(公告)日:1981-04-28

    申请号:US925747

    申请日:1978-07-18

    IPC分类号: H04N1/40 H04N1/419 H04N1/22

    CPC分类号: H04N1/40031 H04N1/419

    摘要: The present invention discloses a technique of effecting recording on a recording medium by a plurality of recording elements, wherein recording density by the plurality of recording elements is varied. Further, the recording density by the plurality of recording elements is varied in accordance with a time required for electrical transmission of informations to be recorded for definite numbers of scanning lines. For example, when the time required for such electrical transmission is short, the recording is effected by small numbers of the recording elements, while, when the time required for the electrical transmission is long, the recording operation is effected by large numbers of the recording elements, thereby preventing the image quality from lowering.

    摘要翻译: 本发明公开了一种通过多个记录元件在记录介质上进行记录的技术,其中改变了多个记录元件的记录密度。 此外,多个记录元件的记录密度根据要定义数目的扫描线记录的信息的电传输所需的时间而变化。 例如,当这种电气传输所需的时间短时,通过少量记录元件进行记录,而当电传输所需的时间长时,记录操作是通过大量记录来实现的 元件,从而防止图像质量降低。

    Information processing apparatus
    8.
    发明授权
    Information processing apparatus 失效
    信息处理装置

    公开(公告)号:US4229768A

    公开(公告)日:1980-10-21

    申请号:US25082

    申请日:1979-03-29

    IPC分类号: G06T9/00 H04N1/411 H04N1/40

    CPC分类号: H04N1/411 G06T9/005

    摘要: In the transmission of binary image signals obtained by scanning of an original document, a high signal compression ratio without deterioration in image quality is achieved by subjecting the binary image signals to a selective thinning process in which the signals of a run-length within a determined range are converted into signals of a determined length and by subsequently coding thus selectively thinned signals. A further improved signal compression is also established without deterioration of image quality by conducting, prior to the selective thinning process, preliminary processes such as elimination of isolated dots in the image or smoothing in the principal and auxiliary scanning directions. Furthermore signal compression ratios are increased by preparing state signals representing the correlation between the first image signals present on a first scan line and the second image signals present on a second scan line to encode and transmit the first image signals and the state signals, and still to allow regeneration of the second image signals at the reception end.Transmission of signals either with coding of a high compression or with a coding of a higher popularity can also be achieved through simple switching of the coding system.Furthermore there is also provided effective thinning on graphic information which could not be easily handled with the conventional thinning processes.

    摘要翻译: 在通过扫描原始文档获得的二进制图像信号的传输中,通过对二进制图像信号进行选择性稀疏处理来实现图像质量的劣化的高信号压缩比,其中,确定的游程长度信号 范围被转换成确定长度的信号,并随后通过随后编码这样选择性地变薄的信号。 还通过在选择性稀化处理之前进行诸如消除图像中的孤立点或在主扫描和辅助扫描方向上的平滑的预处理来进一步改善信号压缩,而不会降低图像质量。 此外,通过准备表示第一扫描线上存在的第一图像信号与存在于第二扫描线上的第二图像信号之间的相关性的状态信号来编码和发送第一图像信号和状态信号,并且仍然 以允许在接收端再生第二图像信号。 通过编码系统的简单切换也可以实现具有高压缩编码或较高流行度编码的信号的传输。 此外,还提供了对于常规稀疏处理不能容易地处理的图形信息的有效缩小。

    Image processing apparatus and method
    9.
    发明授权
    Image processing apparatus and method 失效
    图像处理装置及方法

    公开(公告)号:US06289137B1

    公开(公告)日:2001-09-11

    申请号:US08990758

    申请日:1997-12-15

    IPC分类号: G06K932

    摘要: An image processing apparatus or a facsimile apparatus or the like is constructed by an input unit for inputting image data, a data conversion unit for converting density characteristics of image data inputted by the input unit, and an output unit such as ink jet printer, laser beam printer, or the like for outputting the image data at a predetermined resolution. The data conversion unit converts density characteristics so as to almost equalize densities even when a resolution of the image data that is outputted by the output unit differs. The data conversion unit converts the density characteristics of the input image data on the basis of a luminance/density conversion table formed every resolution of the image data that is outputted by the output unit. The resolution of the output image data is higher than the resolution of the input image data.

    摘要翻译: 图像处理装置或传真装置等由用于输入图像数据的输入单元构成,用于转换由输入单元输入的图像数据的浓度特性的数据转换单元,以及诸如喷墨打印机,激光器 光束打印机等,用于以预定分辨率输出图像数据。 数据转换单元即使当由输出单元输出的图像数据的分辨率不同时,也可以将密度特性转换为几乎使密度均匀化。 数据转换单元基于由输出单元输出的图像数据的每个分辨率形成的亮度/浓度转换表来转换输入图像数据的浓度特性。 输出图像数据的分辨率高于输入图像数据的分辨率。