公开(公告)号：US20030062418A1

公开(公告)日：2003-04-03

申请号：US09766806

申请日：2001-01-22

申请人： Welch Allyn Data Collection, Inc.

发明人： Charles P. Barber ,  Carl W. Gerst III ,  George S. Smith II ,  Robert M. Hussey ,  Robert Gardiner ,  Matthew Pankow

IPC分类号： G06K007/10 ,  G06K009/22

CPC分类号： G06K7/10722

摘要： The invention is an optical reader having a 2D image sensor that is configured to operate in a partial frame capture mode. In a partial frame operating mode, the reader clocks out and captures at least one partial frame of image data having image data corresponding to less than all of the pixels of an image sensor pixel array. In one embodiment, the reader operating in a partial frame operating mode captures image data corresponding to a linear pattern of pixels of the image sensor, reads the image data, attempts to decode for a decodable 1D symbol which may be represented in the image data, and captures a full frame of image data if the image data reading reveals a 2D symbol is likely to be present in a full field of view of the 2D image sensor.

公开(公告)号：US20020125317A1

公开(公告)日：2002-09-12

申请号：US09766922

申请日：2001-03-12

申请人： Welch Allyn Data Collection, Inc.

发明人： Robert M. Hussey ,  Robert Gardiner ,  Matthew Pankow

IPC分类号： G06K007/10 ,  G06K007/14

CPC分类号： G06K7/10732 ,  G06K7/10722 ,  G06K7/10821 ,  G06K7/1413 ,  G06K7/1417 ,  H04N5/343 ,  H04N5/374

摘要： In the present invention, an optical reader image sensor is adapted to clock out image data from an image sensor according to nulllow resolutionnull mode of operation in order to reduce a parameter determination delay of the reader. In a low resolution mode, some pixels of the readers image sensor array are clock out at normal clock out speed sufficient to develop electrical signals accurately reflecting the intensity of light at the respective pixel positions, while other pixels of the array are either not clocked out or are clocked out at a higher clock out rate which may be insufficient to allow development of electrical signals that accurately represent light incident on the image sensor's sensor array but which nevertheless, results in a reduction of the overall frame clock out rate of the frame of image data. An optical reader according to the invention operates in a low resolution frame clock out mode to capture a low resolution parameter determining frame of image data at high speed, reads pixel data from the parameter determination frame to determine an operation parameter based on actual illumination conditions, then utilizes the operation parameter in operating an optical reader.

摘要翻译： 在本发明中，光读取器图像传感器适于根据“低分辨率”操作模式从图像传感器中输出图像数据，以减少读取器的参数确定延迟。 在低分辨率模式中，读取器图像传感器阵列的一些像素以正常的时钟输出速度超时，足以产生准确地反映各个像素位置处的光强度的电信号，而阵列的其他像素不被计时 或者以更高的时钟输出速率输出，这可能不足以允许开发准确地表示入射在图像传感器的传感器阵列上的光的电信号，但是这导致帧的总体帧时钟输出速率的降低 图像数据。 根据本发明的光学读取器以低分辨率帧时钟输出模式操作以高速捕获图像数据的低分辨率参数确定帧，从参数确定帧读取像素数据，以基于实际照明条件确定操作参数， 然后在操作光学阅读器时利用操作参数。