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Method and reader for capturing a plurality of two-dimensional codes which are presented in succession on a display apparatus

A technology for reading equipment and two-dimensional codes. It is applied to instruments, inductive record carriers, electromagnetic radiation induction, etc. It can solve the problems of high error-prone rate and low evaluation rate, and achieve the effect of increasing robustness and easy automatic evaluation.

Inactive Publication Date: 2013-09-18
SIEMENS AG
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Problems solved by technology

However, the relatively low evaluation rate results in a high error-prone rate

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  • Method and reader for capturing a plurality of two-dimensional codes which are presented in succession on a display apparatus

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Embodiment Construction

[0023] In the drawing, six two-dimensional codes Frame_1A, ..., Frame_2C shown in succession are shown along the time axis t, wherein the display device (not shown) is shown successively in time within a defined time interval. Output the code Frame_1A,..., Frame_2C. In this case, the codes are used to transmit the data stream, wherein the exemplary codes shown here contain their names “Frame_1A” . . . “Frame_2C” as payload. However, individual images, data records etc. can therefore also be transmitted in a practical configuration. The code forms two sets Set1, Set2, which is an optional implementation form explained later. On the right side of the drawing, the points in time on the time axis t at which the recording device (camera) records the display content of the (not shown) display device are marked by means of a horizontal arrow; here The pictures P1 , . What is important here is that the rate of change of the code is less than the rate of shots of the camera; thus in...

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Abstract

A method, a reader and a computer program product for capturing two-dimensional codes presented in succession on a display apparatus, wherein the two-dimensional codes are captured by a plurality of shots from a camera and are decoded by an evaluation device. Here, a shooting rate of the camera for capturing the shots having the codes is higher than a rate of change of the presented codes, wherein in the event of a change of the presented code a subsequently presented code is presented having a changed orientation in relation to the respective previously presented code, and wherein before decoding a code from a shot the orientation of the code in the respective shot is respectively ascertained, where decoding is performed only when the captured code has an orientation that has changed in relation to the most recently successfully decoded code. By the method or the apparatus, when same two-dimensional codes are evaluated, unnecessary complete decoding is avoided, that is: an unnecessary recovery method of effective contents can raises processing speed or reduce calculation loading for the evaluation device.

Description

technical field [0001] The invention relates to a method for capturing a plurality of two-dimensional codes shown in succession on a display device, wherein the two-dimensional codes are captured by means of several shots of a camera and are evaluated by means of an evaluation mechanism Decoding; a reading device for a plurality of two-dimensional codes shown in succession on a display device, wherein the two-dimensional codes are captured by means of multiple shots of a camera, and wherein by means of the reading device an evaluation mechanism decoding the two-dimensional code; and a corresponding computer program product having executable program code or source code or intermediate code capable of being compiled into executable program code. Background technique [0002] In order to provide information and to transmit information to technical devices, so-called "optical codes" are often used, i.e. machine-readable and generally easier to process than plain text, with a hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10
CPCG06K7/1093G06K7/1095G06K7/1456
Inventor 乔治·马马拉泽拉尔斯·梅尔曼
Owner SIEMENS AG
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