Abstract:
A testing system selects one of testing paths based on a control unit and a test switching unit for randomly executing tests upon a plurality of products based on the testing requirements of each of examining units, so as to decrease the costs of equipment, interference between the tests on several products, the idle time of a testing devise and the testing period for tested products.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a testing system for digital display screens, and more particularly to a wireless and high frequency product integrated testing system for measuring products according to the testing requirements thereof. 
         [0003]    2. Description of the Prior Art 
         [0004]    In the current era, the market demands not only that products have to enter the market quickly, but also that they have a certain standard of quality. Therefore, a fast testing procedure and testing accuracy are important points for ensuring the quality of products and satisfying users&#39; testing requirements. 
         [0005]    In previous testing methods for wireless and high frequency products, a testing device that measured the various functions of a product, was placed upon the test workbench for each product so as to measure each product one-on-one. In the first of these prior art testing methods, the method reduced interference in the testing period and increased the accuracy and stability of measuring signals when measuring various wireless and high frequency products. However, this method required a large amount of equipment and maintenance costs for the above-described analyzers increase the cost of testing products. 
         [0006]    In order to solve the problem of such high testing costs, an integrated testing system was recently developed that uses only a single analyzer and at most two testing workbenches that have can operate on a one-on-one basis and can operate continuously. Thereby, testing can be performed so as to reduce testing costs and shorten the length of time required for testing products. In the second of the prior art testing methods, the integrated testing system had to complete measuring all functions of a product upon a first workbench so that it could move to measuring each function of the next product upon the next workbench. 
         [0007]    However, the second testing method merely reduces the period required for placing products into corresponding workbenches. However, the idle periods of analyzers remain unchanged. Furthermore, the measurable ability of an analyzer has a great effect upon both the cost of the equipment and the maintenance costs. That is, the more measurable functions an analyzer has, the greater the cost of equipment and maintenance will be. Hence, the second case reduces the measurable functions of the analyzer so as to reduce both testing costs and testing times. However, the idle period remains unchanged. Subsequently, the quality of tested products is also reduced. 
       SUMMARY OF THE INVENTION 
       [0008]    It is the object of the present invention to reduce the cost of many analyzers and their subsequent maintenance costs for those same analyzers. 
         [0009]    It is another object of the present invention that each examining unit can measure the multiple functions of a product. 
         [0010]    It is another object of the present invention to measure various functions of each of the products by time-division multiplexing. 
         [0011]    It is another object of the present invention to avoid interference from measuring wireless and high frequency products so as to increase the testing accuracy via a test switching unit that is capable of switching testing paths. 
         [0012]    It is another object of the present invention that the integrated testing system measures products based on the testing requirements of each of the examining units. Hence, the present invention can reduce the idle period and the average testing period. 
         [0013]    In order to achieve the above objects, the present invention provides an integrated testing system that includes a control unit, a plurality of examining units, an analyzer and a test switching unit, to measure a product in a corresponding examining unit based on the testing requirements thereof. First, the control unit determines whether one of the examining units outputs a testing signal according to the testing requirements thereof. Next, the control unit executes a testing program so as to produce a corresponding control signal based on the testing signal. The test switching unit opens a corresponding testing path from various testing paths based on the control signal. Finally, the analyzer can measure the product in the corresponding examining unit through the opened testing path. 
     
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]    The above and further advantages of this invention may be better understood by referring to the following description, taken in conjunction with the accompanying drawings, in which: 
           [0015]      FIG. 1  is a block diagram that illustrates the integrated testing system of the present invention; 
           [0016]      FIG. 2  is a block diagram that illustrates the control unit controlling the analyzer and test switching unit in the present invention; and 
           [0017]      FIG. 3  is a flowchart that illustrates the integrated testing method of the present invention. 
       
    
    
       [0018]    The drawings will be described further in connection with the following detailed description of the present invention. 
       DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0019]    The integrated testing method of the present invention supports testing separate equipment controls and various chipset controls via a protocol applied to all workbenches for testing products, and is especially applicable for testing wireless and high frequency products. 
         [0020]    Referring to  FIG. 1 , an integrated testing system of the present invention is shown. The integrated testing system includes a control unit  10 , a plurality of examining units, an instruction transmitter  30 , an analyzer  40  and a test switching unit  50 , wherein the examining units are respectively include the first examining unit  21  to the Nth examining unit  23 . 
         [0021]    Each of the examining units includes an examining device and an auxiliary testing unit. That is, the first examining unit  21  includes a first examining device  211  and a first auxiliary testing unit  213 , the second examining unit  22  includes a second examining device  221  and a second auxiliary testing unit  223 , and the Nth examining unit  23  includes a Nth examining device  231  and a Nth auxiliary testing unit  233 . All of above examining devices, from the first examining device  211  to the Nth examining device  231 , are what products are placed in for measuring products. All of above auxiliary testing units, from the first auxiliary testing unit  213  to the Nth auxiliary testing unit  233 , are computers, and each of the auxiliary testing units connect to a corresponding examining device. 
         [0022]    In this case, if a product in the first examining device  211  has to be measured, the first examining device  211  will output a testing signal to the control unit  10  via the first auxiliary testing unit  213 . If a product in the second examining device  221  has to be measured, the second examining device  221  will output a testing signal to the control unit  10  via the second auxiliary testing unit  223 . Furthermore, if a product in the Nth examining device  231  has to be measured, the Nth examining device  231  will output a testing signal to the control unit  10  via the Nth auxiliary testing unit  233 . 
         [0023]    Alternatively, the control unit  10  connects to each of the examining units, from the first examining unit  21  to the Nth examining unit  23 , via the instruction transmitter  30  and the network. The analyzer  40  connects to the control unit  10  and the test switching unit  50 , wherein the instruction transmitter  30  can be a hub, and the analyzer  40  can be a tester, such as a one-box tester(OBT), an Agilent N4010A or an ACE IQ View/Flex and so on. The test switching unit  50  connects to the control unit  10  and each of the examining units. 
         [0024]    The control unit  10  executes a testing program according to a testing signal outputted by each of the examining units, for further respectively producing a control signal. Hence, the control unit  10  can control the analyzer  40  and test switching unit  50  via the control signal, wherein the control unit  10  can be a computer. The control unit  10  controls the analyzer  40  to measure randomly each of the examining units. Furthermore, the test switching unit  50  defines a testing path from a plurality of switch channels according to the control signal provided by the control unit  10 , wherein the switch channels can conduct to a plurality of testing paths, and the testing paths are independent and isolated. 
         [0025]    For example, if one of the examining unit outputs a testing signal to the control unit  10  based on the testing requirements thereof, the control unit  10  will execute the testing program and control the test switching unit  50  to select a corresponding testing path, therefore the analyzer  40  will measure the examining unit through the selected testing path. Hence, the integrated testing system of the present invention only uses the analyzer  40  to measure various products via the test switching unit  50  switching testing paths, so as to reduce the purchase costs for a number of analyzers and the maintenance costs of those analyzers. 
         [0026]    Referring to  FIG. 2 , a block diagram for the control unit of the present invention of controlling an analyzer and a test switching unit, is shown. The test switching unit  50  includes a switch control unit  510  and a plurality of switches, wherein the number of the switches is based on a users&#39; testing requirements, and the switches operate based on the connections using a tree structure. 
         [0027]    In this case, the test switching unit  50  includes seven switches, from the first switch  521  to the seventh switch  527 , and each of the switches connects to the switch control unit  510 . Accordingly, each of the switches provides two channels for switching, and the output end of the test switching unit  50  provides eight testing paths, from the first testing path  531  to the eighth testing path  538 , wherein the testing paths are independent and isolated. Hence, each of the testing paths respectively connects to one examining unit. There are eight examining units in this case. 
         [0028]    If the control unit  10  outputs a control signal for controlling the switch control unit  510 , the switch control unit  510  will control each of the switches for switching to define a testing path for the test switching unit  50 . Next, the analyzer  40  measures the corresponding examining unit based on the defined testing path. 
         [0029]    Referring to  FIG. 3 , a flowchart of the integrated testing method of the present invention is shown. First, after turning on the integrated testing system, all elements of the integrated testing system are reset and are in an initial state (Step S 310 ), wherein the first testing path  531  is selected. 
         [0030]    Next, the integrated testing system detects whether one of the examining units has outputted a testing signal based on the testing requirements thereof (Step S 320 ), that is, the integrated testing system detects whether the first examining unit  21  has outputted the testing signal via the first testing path  531 . However, if the integrated testing system is in this state, when the first examining unit  21  has not outputted the testing signal, this means that no product has been placed in the first examining device  211  (nor even in any of the other examining devices). The integrated testing system will then wait for a product to be placed in the first examining device  211 . If the first examining unit  21  has outputted the testing signal to the control unit  10 , the control unit  10  will execute the testing program according to the testing signal produced by a control signal (Step S 330 ) 
         [0031]    Hence, the test switching unit  50  initially opens the first testing path  531  from the testing paths according to the control signal, and the analyzer  40  further measures a certain function of the product in the first examining device  211  to obtain a test result (Step S 340 ). 
         [0032]    Finally, the integrated testing system determines whether all functions of the product in each of the examining units have been completely measured (Step S 350 ). If all functions of the product in each of the examining units have not been completely measured, the control unit  10  will wait for the next testing signal outputted by one of the examining units. If all functions of the product in each of the examining units have been completely measured, the integrated testing system will close the testing program (Step S 360 ). 
         [0033]    In the present invention, each of the examining units with the ability for measuring multiple functions of a product can output a testing signal according to the testing requirements thereof. The integrated testing system can measure the functions of the product in each of the examining units without taking turns to measure each of the functions of a product and each of the examining units. Hence, the present invention can reduce the idle time of the analyzer  40  and the testing period for measuring products. 
         [0034]    The advantage of the present invention is that a control unit is used to control the integrated testing system to measure products. 
         [0035]    Another advantage of the present invention is that the integrated testing system includes a plurality of examining units for measuring a plurality of products randomly, to reduce the purchasing costs for a number of analyzers and the maintenance costs for those analyzers. 
         [0036]    Another advantage of the present invention is that each of the examining units can measure multiple functions of a product. 
         [0037]    Another advantage of the present invention is that the switching various testing paths measure various products via a control unit and a test switching unit. 
         [0038]    Another advantage of the present invention is that various functions of each of the products can be measured by time-division multiplexing. 
         [0039]    Another advantage of the present invention is that interference for measuring wireless and high frequency products is avoided so as to increase the testing accuracy via a test switching unit switching testing paths. 
         [0040]    Yet another advantage of the present invention is that the integrated testing system measures products are based on the testing requirements of each of the examining units. Hence, the present invention can reduce the idle period and the average testing period. 
         [0041]    The description above only illustrates specific embodiments and examples of the invention. The invention should therefore cover various modifications and variations made to the herein-described structure and operations of the invention, provided they fall within the scope of the invention as defined in the following appended claims.