Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1, an automatic waste discharging apparatus according to the present invention will now be described. An automatic waste discharge apparatus includes a conveying apparatus 1, a visual inspection apparatus 2, a used paper collecting apparatus 3, and a control center (not shown);
the vision inspection device 2 and the waste paper collecting device 3 are in communication connection with the control center;
the conveying device 1 is used for conveying a plurality of printed paper sheets;
the visual inspection device 2 is used for sequentially inspecting whether all printed paper on the conveying device 1 is qualified or not, and if the current printed paper is unqualified, sending a control signal corresponding to the current printed paper to the control center;
the control center judges whether the current printed paper moves to the used paper collecting device 3 according to the control signal, and when the control center judges that the current printed paper moves to the used paper collecting device 3, the control center sends a driving signal to the used paper collecting device 3;
the used paper collecting apparatus 3 is adapted to be in an operating state in accordance with the drive signal.
Compared with the prior art, when the visual inspection device 2 inspects unqualified printed paper, the control center starts to judge whether the unqualified printed paper moves to the waste paper collection device 3, when the unqualified printed paper moves to the waste paper collection device 3, the control center enables the waste paper collection device 3 to be in a working state, when the waste paper collection device 3 is in the working state, the waste paper collection device 3 directly removes the unqualified printed paper from the conveying device 1, a user does not need to pause the conveying device 1, the purpose of removing the unqualified printed paper on the conveying device 1 without stopping the conveying device is achieved, and therefore the efficiency and the quantity of the inspection of the printed paper are improved. When the visual inspection device 2 inspects the qualified printed paper, the control center does not judge whether the qualified printed paper is moved to the used paper collection device 3, so that when the qualified printed paper is moved to the used paper collection device 3, the used paper collection device 3 does not remove the qualified printed paper from the conveying device 1 in the conveying device 1, and the used paper collection device 3 is in a standby state to be away from the conveying surface of the conveying device 1. The corresponding printed paper is inspected by adopting the corresponding detection standard through the automatic waste discharge device, so that the difference existing in manual inspection is eliminated.
Specifically, the visual inspection apparatus 2 is used to inspect whether the printed paper is a blank sheet, a wrong sheet, a reverse sheet, a wrong text, or other poor printing problems.
Further, referring to fig. 1, as an embodiment of an automatic waste discharge apparatus provided by the present invention, the conveying apparatus 1 includes a first conveying device 11 and a second conveying device 12, a discharge end of the first conveying device 11 is located at a side of a feed end of the second conveying device 12, the first conveying device 11 is used for conveying printed paper to the second conveying device 12, the second conveying device 12 is used for conveying printed paper separated from the first conveying device 11 to a predetermined position, and a collection end of the used paper collection device 3 faces between the feed end of the second conveying device 12 and the discharge end of the first conveying device 11.
When the rejected printed sheets move to the side between the feed end of the second conveyor 12 and the discharge end of the first conveyor 11, the collection end of the used paper collection device 3 removes the rejected printed sheets from the side between the feed end of the second conveyor 12 and the discharge end of the first conveyor 11 when the used paper collection device 3 is in the operating state. A certain distance is provided between the feed end of the second conveyor 12 and the discharge end of the first conveyor 11, and the collecting end of the used paper collecting device 3 is not obstructed between the feed end of the second conveyor 12 and the discharge end of the first conveyor 11. The printed sheets on the first transport device 11 move by their own weight and inertia of movement onto the second transport device 12.
Specifically, the first conveying device 11 and the second conveying device 12 are set as feeder devices.
Preferably, the distance between the discharge end of the first conveyor 11 and the feed end of the second conveyor 12 is 5cm to 10 cm.
Further, referring to fig. 1, as an embodiment of an automatic waste discharge device provided by the present invention, the used paper collecting device 3 includes an air blowing device 31 and an electromagnetic valve 32, the electromagnetic valve 32 is electrically connected to the control center and has one end connected to an air blowing end of the air blowing device 31, and the air blowing end of the air blowing device 31 faces between the discharging end of the first conveying device 11 and the feeding end of the second conveying device 12.
When the used paper collecting device 3 is in an operating state, the air blowing device 31 is turned on, the control center turns on the electromagnetic valve 32, and the air blowing device 31 blows air between the discharge end of the first conveying device 11 and the feed end of the second conveying device 12, so that the unqualified printed paper on one side between the discharge end of the first conveying device 11 and the feed end of the second conveying device 12 is blown to one side between the discharge end of the first conveying device 11 and the feed end of the second conveying device 12. When the used paper collecting apparatus 3 is in a standby state, the air blowing device 31 is opened, the electromagnetic valve 32 is closed, and the air flow in the air blowing device 31 cannot flow out of the electromagnetic valve 32. The electromagnetic valve 32 is matched with the control center, so that the convenience of controlling the air blowing device 31 to blow air is improved.
Specifically, a side between the discharge end of the first conveyor 11 and the feed end of the second conveyor 12 is set as a first side, and a side between the discharge end of the first conveyor 11 and the feed end of the second conveyor 12 is set as a second side, that is, a side with respect to the first side is set as a second side.
Further, referring to fig. 1, as an embodiment of the automatic waste discharge device provided by the present invention, the automatic waste discharge device further includes a collecting tank 5, a feeding end of the first conveying device 11 is set as a collecting gap between a discharging end of the first conveying device 11 and a feeding end of the second conveying device 12, a blowing end of the blowing device 31 faces a notch of the collecting tank 5, and the collecting gap is located between the blowing end of the blowing device 31 and the collecting tank 5.
The air blowing device 31 blows the unqualified printed paper on one side of the collecting gap into the collecting tank 5, and plays a role of conveniently collecting the unqualified printed paper. The collecting tank 5 is simple in structure, low in cost and very practical.
In particular, the collecting gutter 5 is located on the second side. The slot of the collecting gutter 5 is directed between the discharge end of the first conveyor 11 and the feed end of the second conveyor 12, it being understood that the slot of the collecting gutter 5 is directed towards the collecting gap.
Preferably, the collection trough 5 is placed on the ground.
Further, referring to fig. 1, as an embodiment of the automatic waste discharge device provided by the present invention, the vision inspection device 2 includes a processing center (not shown), a vision camera 21 and a first photoelectric sensor 22, wherein a shooting end of the vision camera 21 and a sensing end of the first photoelectric sensor 22 face a conveying surface of the first conveying device 11, the vision camera 21 and the first photoelectric sensor 22 are electrically connected to the processing center, and the processing center is electrically connected to the control center.
The vision camera 21 sequentially shoots real-time images of the printed paper, the real-time images are sent to the processing center, the processing center calls pre-stored standard images to be sequentially compared with the real-time images, and if the current real-time images are different from the standard images, the printed paper corresponding to the current real-time images is unqualified and forms unqualified data. The first photosensor 22 is used to detect whether each printed sheet passes through the vision camera 21 in sequence. When each printed sheet sequentially passes through the vision camera 21, the first photosensor 22 sends a first pulse to the processing center, and the processing center counts the number of sheets of printed sheets passing through the vision camera 21 according to each first pulse to form the number data. The processing center may also obtain the positional relationship between the printed sheet currently passing through the vision camera 21 and the other printed sheets passing through the vision camera 21 from the first pulse. The processing center forms a control signal according to the number data and the unqualified data and sends the control signal to the control center, so that the control center can calculate unqualified printed paper to move to the waste paper collecting device 3 according to the control signal.
Specifically, the processing center is set to be a PLC or an MCU. The processing center and the control center are arranged in an integrated mode.
Specifically, the vision camera 21 includes a camera body and a light source.
Specifically, the control center may further obtain count data, total data, first total data, a total number of the first pulses, and the like from the first pulses.
Further, referring to fig. 1, as an embodiment of the automatic waste discharging device provided by the present invention, the automatic waste discharging device further includes a second photoelectric sensor 4 electrically connected to the control center, a sensing end of the second photoelectric sensor 4 faces a conveying surface of the first conveying device 11, the second photoelectric sensor 4 is close to a discharging end of the first conveying device 11, and the vision camera 21 and the first photoelectric sensor 22 are far away from the discharging end of the second conveying device 12.
When the printed sheet passes the sensing end of the second photosensor 4, the second photosensor 4 sends a second pulse to the control center. The control center can judge whether the unqualified printed paper moves to the waste paper collecting device 3 or not and is completely removed by the waste paper collecting device 3 according to the second pulse, thereby achieving the purpose of controlling the waste paper collecting device 3 to be in a standby state in time, avoiding the waste paper collecting device 3 from removing the qualified printed paper from the conveying device 1 and ensuring the long-time non-stop use of the automatic waste discharging device.
Further, referring to fig. 1, as a specific embodiment of the automatic waste discharging device provided by the present invention, the automatic waste discharging device further includes a reset button 61 and a count button, the reset button 61 and the count button are electrically connected to the control center, the count button has a first pressed state and a second pressed state, when the count button is in the first pressed state, the control center starts counting, when the count button is in the second pressed state, the control center suspends counting and stores count data, and the reset button 61 is used for controlling the control center to reset the count data.
When it is necessary to manually set the count data required for moving the printed sheets from the first photoelectric sensor 22 to the used paper collecting apparatus 3, the user first presses the reset button 61 to clear the stored count data of the control center. The transport device 1 and the first photosensor 22 are activated and the transport device 1 passes the printed sheets in sequence past the first photosensor 22. The user puts the counting button into a first pressing state according to actual conditions, the control center starts to calculate according to the first pulse, the printed paper which passes through the first photoelectric sensor 22 at present is set as the first printed paper, when the first printed paper moves to the waste paper collecting device 3, the user puts the counting button into second pressing data, and the control center calculates according to all the first pulse to obtain counting data and stores and displays the counting data.
Specifically, the control center is set to be PLC or MCU.
Further, referring to fig. 1, as an embodiment of an automatic waste discharge apparatus according to the present invention, the used paper collecting apparatus 3 includes a linear driving device (not shown), an output end of the linear driving device faces between the discharge end of the first conveying device 11 and the feed end of the second conveying device 12, the linear driving device is located at a side between the discharge end of the first conveying device 11 and the feed end of the second conveying device 12, and the linear driving device is electrically connected to a control center.
When the unqualified printed paper moves to the linear driving device, the output end of the linear driving device quickly pushes the unqualified printed paper to one side between the discharge end of the first conveying device 11 and the feed end of the second conveying device 12.
Specifically, the linear driving device is configured as a cylinder or a linear motor.
Referring to fig. 1, the present invention further provides a printing system, which includes a printing device (not shown) and an automatic waste discharge device as described above, wherein the discharge end of the printing device is located at one side of the feed end of the conveyer 1.
According to the printing system provided by the invention, the printing device conveys the printed paper to the conveying device 1, the visual inspection device 2 of the automatic waste discharge device inspects the printed paper, the waste paper collection device 3 processes unqualified printed paper, the printing device and the automatic waste discharge device do not need to be stopped to process unqualified printed paper, and the printing efficiency of the printing system is improved.
Further, referring to fig. 1, as an embodiment of a printing system provided by the present invention, the printing system further includes a folding device (not shown), and a feeding end of the folding device is disposed at a side of a discharging end of the conveying device 1.
Qualified printed paper directly enters the paper folding device for paper folding treatment, and the printing system integrates the functions of printing, inspection, waste discharge, paper folding and the like, thereby improving the paper folding efficiency.
Referring to fig. 1 and 2, the present invention also provides an automatic waste discharging method, which will now be described. An automatic waste discharge method comprises the following steps:
s1-1: sequentially placing a plurality of printed paper on a conveying device of an automatic waste discharge device, wherein the conveying device drives the printed paper to sequentially pass through a visual inspection device and a collecting device of the automatic waste discharge device;
s1-2: sequentially checking whether all printed paper on the conveying device is qualified or not through the visual checking device, and if the printed paper is unqualified, sending a control signal corresponding to the printed paper to the control center;
s1-3: the control center judges whether the current printed paper moves to the used paper collecting device or not according to the control signal, and when the control center judges that the current printed paper moves to the used paper collecting device, the control center controls the used paper collecting device to be in a working state;
s1-4: the control center judges whether the current printed paper is separated from the conveying device, and if the current printed paper is separated from the conveying device, the control center controls the used paper collecting device to be in a standby state.
Compared with the prior art, the automatic waste discharge method provided by the invention has the advantages that a user can directly separate unqualified printed paper from the conveying device without stopping the conveying device. By the automatic waste discharge method, ten thousand printed paper sheets can be quickly inspected every hour, unqualified printed paper sheets in the ten thousand printed paper sheets are taken out, and the quantity and the efficiency of inspecting the printed paper sheets are greatly improved. And meanwhile, the waste paper collecting device can not influence qualified printed paper in the using process.
Further, as a specific embodiment of an automatic waste discharge method provided by the present invention, the control signal includes sheet count data and non-qualification data;
the control center obtains the sheet count data through a first pulse of a first photoelectric sensor of the vision inspection device and obtains the unqualified data through a processing center of the vision inspection device;
step S1-3 is set to:
the control center judges whether the current printed paper moves to the used paper collecting device of the automatic waste discharging device according to the number data, and when the control center judges that the current printed paper moves to the used paper collecting device, the control center controls the used paper collecting device to be in an operating state.
Specifically, the number-of-sheets data is integer data, and the realization control center can judge the specific number of sheets in all printed sheets in the current printed sheet. The failure data is set as marking data, and serves to mark that the current printed paper is not acceptable.
Further, referring to fig. 2 and 3, as an embodiment of the automatic waste discharge method provided by the present invention, before step S1-1, the method further includes the following steps:
s2: setting counting data;
step S1-3 is set to:
the control center judges whether the current printed paper moves to the used paper collecting device according to the number data and the counting data, and when the control center judges that the current printed paper moves to the used paper collecting device, the control center controls the used paper collecting device to be in an operating state.
Specifically, the count data is set to integer data. The user sets counting data to determine the number of printed sheets required for moving from the visual inspection device to the used paper collecting device, so that the control center automatically and accurately determines that unqualified printed sheets move from the visual inspection device to the used paper collecting device according to the number data and the counting data.
Further, referring to fig. 1, fig. 2 and fig. 3, as an embodiment of the automatic waste discharge method provided by the present invention, in step S2, the method includes the following steps:
s2-1: a reset button for controlling the automatic waste discharge device to clear the counting data of the control center, and a plurality of counting paper sheets with the same size are equidistantly placed along the length direction of the conveying device;
s2-2: starting a first photoelectric sensor of the conveying device and the automatic waste discharge device, setting a counting paper passing through the first photoelectric sensor at present as a first counting paper, and enabling the counting button to be in a first pressing state;
s2-3: when the first counting paper moves to the waste paper collecting device along with the conveying device, controlling the counting button to be in a second pressing state;
s2-4: the control center calculates the count data from the first pulse of the first photosensor.
The counting data is determined manually, the counting data can be reset and reset, and a user can set the counting data according to printed paper with different sizes. The counting data is set through the counting button, and the operation is convenient. The actual size of the counting paper is selected according to the actual size of the printed paper, and the counting paper plays a role in simulating the printed paper.
Further, referring to fig. 2 and 4, as an embodiment of the automatic waste discharge method provided by the present invention, step S1-3 includes the following steps:
s3-1: the control center calculates to obtain real-time total data according to the first pulse;
s3-2: and determining whether or not the sum of the count data and the number-of-sheets data is equal to the total data, and if the sum of the count data and the number-of-sheets data is equal to the total data, moving the current printed sheet to the used paper collecting device.
Specifically, the total data is integer data, and if the sum of the count data and the number-of-sheets data is larger than the total data, the current printed paper does not leave the used paper collecting device.
Further, referring to fig. 2, as an embodiment of the automatic waste discharge method provided by the present invention, step S3-2 further includes the following steps:
if the sum of the count data and the number-of-sheets data is larger than the total data, the printed sheets do not slip off the used paper collecting device at present, and the control center controls the used paper collecting device to maintain the operating state.
Further, referring to fig. 2, as an embodiment of the automatic waste discharge method provided by the present invention, step S1-4 includes the following steps:
the control center controls the waste paper collecting device to be in a working state, and judges whether a second pulse of the second photoelectric sensor is received or not, and if the second pulse is received, the current printed paper does not depart from the conveying device; if the second pulse is not received, the current printed paper leaves the conveying device.
Through the steps, the control center can more accurately judge whether the unqualified printed paper is separated from the conveying device through the second photoelectric sensor.
Referring to fig. 1 and 5, the present invention further provides a non-stop waste discharging method, which will now be described. A non-stop waste discharge method comprises the following steps:
s4-1: sequentially placing a plurality of printed paper on a conveying device of an automatic waste discharge device, wherein the conveying device drives the printed paper to sequentially pass through a visual inspection device, a second photoelectric sensor and a waste paper collecting device of the automatic waste discharge device;
s4-2: sequentially checking whether all the printed paper on the conveying device is qualified or not through the visual checking device, and if the printed paper is unqualified currently, sending a control signal corresponding to the printed paper currently to a control center of the automatic waste discharge device;
s4-3: the control center judges whether the current printed paper moves to a used paper collecting device of the automatic waste discharge device according to the control signal and a second pulse of the second photoelectric sensor, and when the control center judges that the current printed paper moves to the used paper collecting device, the control center controls the used paper collecting device to be in a working state;
s4-4: the control center judges whether the current printed paper is separated from the conveying device, and if the current printed paper is separated from the conveying device, the control center controls the used paper collecting device to be in a standby state.
Compared with the control center which directly judges whether the printed paper moves to the waste paper collecting device through the visual inspection device, the control center can judge whether the printed paper moves to the waste paper collecting device through the visual inspection device and the second photoelectric sensor. The user can directly separate the unqualified printed paper from the conveying device without stopping the conveying device. By the non-stop waste discharge method, ten thousand printed paper sheets can be quickly checked every hour, unqualified printed paper sheets in the ten thousand printed paper sheets can be taken out, and the quantity and the efficiency of checking the printed paper sheets are greatly improved. And meanwhile, the waste paper collecting device can not influence qualified printed paper in the using process.
Further, referring to fig. 5, as a specific embodiment of the non-stop waste discharge method provided by the present invention, the control signal includes first total data and non-conforming data, the control center obtains the first total data through a first pulse of a first photosensor of the vision inspection apparatus, and the control center obtains the non-conforming data through a processing center of the vision inspection apparatus;
step S4-3 is set to:
the control center judges whether the current printed paper moves to the used paper collecting device of the automatic waste discharging device according to the first total data and the second pulse, and when the control center judges that the current printed paper moves to the used paper collecting device, the control center controls the used paper collecting device to be in the working state.
Whether the current printed paper moves to the waste paper collecting device of the automatic waste discharge device is rapidly calculated through the first total data and the second pulse, so that the control center can accurately judge whether the current printed paper moves to the waste paper collecting device of the automatic waste discharge device.
Specifically, the first total number data and the fail data are set as integer data.
Further, referring to fig. 5 and 6, as an embodiment of the method for discharging waste without shutdown according to the present invention, S4-3 includes the following steps:
s5-1: the control center calculates to obtain real-time second total data according to the second pulse;
s5-2: the control center judges whether the first total data is equal to the second total data, if the first total data is equal to the second total data, the current printed paper moves to the waste paper collecting device, and the control center controls the waste paper collecting device to be in the working state.
The control center counts according to the second pulse through steps S5-1 to S5-2 to calculate the total number of printed sheets passing through the second photosensor, thereby judging whether the current printed sheet is moved to the used paper collecting device according to the total number of printed sheets passing through the first photosensor and the total number of printed sheets passing through the second photosensor.
Specifically, the second total number data is set as integer data.
Further, referring to fig. 5 and fig. 7, as an embodiment of the non-stop waste discharging method provided by the present invention, before step S4-1, the method further includes the following steps:
s6-1: setting number data;
setting the "the control center obtains the first total number data through a first pulse of a first photosensor of the vision inspection apparatus" as:
the control center divides the total number of the first pulses by the number data to obtain first total number data;
step S5-1 is set to:
and the control center divides the total number of the second pulses by the number data to obtain second total number data.
Because the printed sheets are different in size, when one printed sheet passes through the first photosensor, the number of first pulses generated by the first photosensor to the control center is one or more. The number data is the number of first pulses generated by a printed paper passing through the first photoelectric sensor and sent to the control center, and the user sets the number according to the size of the printed paper. The first total number data is a total number of printed sheets passing through the first photosensor.
Because the printed sheets are different in size, when one printed sheet passes through the second photosensor, the number of second pulses generated by the second photosensor to the control center is one or more. The second total data is the total number of printed sheets passing the second photosensor.
Specifically, the number data is set as integer data.
Further, referring to fig. 7, as an embodiment of the non-stop waste discharging method provided by the present invention, in step S6-1, the method includes the following steps:
s6-1-1: controlling a zero clearing button of the automatic waste discharge device to clear the number data, and placing a counting paper on the conveying surface of the conveying device;
s6-1-2: starting a first photoelectric sensor of the conveying device and the automatic waste discharge device, enabling the counting paper to pass through the first photoelectric sensor, and enabling the counting button to be in a first pressing state;
s6-1-3: when the counting paper completely passes through the first photoelectric sensor, controlling the counting button to be in a second pressing state;
s6-1-4: and the control center calculates the number data according to the first pulse of the first photoelectric sensor.
The number data is manually determined, the number data can be reset and reset, and a user can set the number data according to printed paper with different sizes. The number data is set through the counting button, and the operation is convenient. The actual size of the counting paper is selected according to the actual size of the printed paper, and the counting paper plays a role in simulating the printed paper.
Further, referring to fig. 5, as a specific embodiment of the non-stop waste discharge method provided in the present invention, step S4-4 is set as follows:
the control center judges whether the real-time first total data is larger than the previous first total data or not, if the current real-time first total data is larger than the previous first total data, the current printed paper is separated from the conveying device, and the control center controls the waste paper collecting device to be in the standby state; and if the current real-time first total data is not more than the previous first total data, the control center controls the waste paper collecting device to keep the working state.
The first count data is accumulated in real time. The real-time first total data is compared with the previous first total data to judge whether the current printed paper is separated from the conveying device.
Referring to fig. 8, a computer apparatus according to the present invention will now be described. A computer device comprising a memory, a processor and a computer program stored in said memory and executable on said processor, said processor executing said computer program to perform the steps of one of the above-described automatic waste discharge methods, such as steps S1-1 to S1-4 shown in fig. 2, or the computer program when executed by the processor performs the steps of one of the above-described non-stop waste discharge methods, such as steps S4-1 to S4-4 shown in fig. 5. To avoid repetition, further description is omitted here.
Referring to fig. 8, a computer-readable storage medium according to the present invention will now be described. A computer-readable storage medium storing a computer program for execution by a processor to perform the steps of an automatic waste discharge method as described above, such as steps S1-1 to S1-4 shown in fig. 2, or for non-stop waste discharge method as described above, such as steps S4-1 to S4-4 of fig. 5. To avoid repetition, here no more cumbersome,
it will be understood by those skilled in the art that all or part of the processes of implementing the steps of the automatic waste discharging method may be implemented, and that all or part of the processes of implementing the steps of the non-stop waste discharging method may be implemented by controlling related hardware through a computer program, which may be stored in a non-volatile computer readable storage medium, and when executed, the computer program may include processes of an automatic waste discharging method or may include processes of a non-stop waste discharging method. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. The non-volatile memory may include read only memory, programmable ROM, electrically erasable programmable ROM, or flash memory. Volatile memory may include random access memory or external cache memory IQ. Random access memory is available in a variety of forms such as, without limitation, static RAM, dynamic RAM, synchronous DRAM, double data rate SDRAM, enhanced SDRAM, synchronous DRAM, memory bus, direct RAM, direct memory bus dynamic RAM, and memory bus dynamic RAM.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.