公开(公告)号：US5293490A

公开(公告)日：1994-03-08

申请号：US54821

申请日：1993-04-30

申请人： Ichiro Sasaki ,  Kouzi Nakayama

发明人： Ichiro Sasaki ,  Kouzi Nakayama

IPC分类号： G06F5/10 ,  G06K15/00 ,  G06F13/28

CPC分类号： G06F5/10 ,  G06K15/00 ,  G06F2205/108 ,  G06K2215/0022 ,  G06K2215/0077

摘要： A data buffering device having a data buffer permitting data storage in a first storage area A while the area A is advanced over a predetermined number of storage areas of the buffer in a predetermined sequence and permitting data reading from a second storage area B while the area B is advanced in the same sequence; a first device judging whether or not it is permissible to carry out at least one of a simple data storage and a simple data reading; a second device executing, if the judgement of the first device is negative, a return judgement whether or not it is necessary to return a corresponding one, or each, of the areas A and B to a leading storage area of the buffer, and a possibility judgement whether or not the buffer has at least a predetermined number of storage area or areas permitting a corresponding one, or each, of a data storage and a data reading, if the possibility judgement is affirmative the second device placing the first device in a condition in which the first device provides an affirmative judgement, and carrying out the corresponding one or each of the data storage and reading; and a third device carrying out, if the judgement of the first device is affirmative, the at least one of the simple data storage and reading, without the return and possibility judgements of the second device.

摘要翻译： 一种数据缓冲装置，具有允许在第一存储区域A中数据存储的数据缓冲器，同时区域A以预定顺序超过缓冲器的预定数量的存储区域，并允许从第二存储区域B读取数据，同时区域 B以相同的顺序进行; 判断是否允许执行简单数据存储和简单数据读取中的至少一个的第一设备; 第二装置，如果第一装置的判断为否定，则返回判断是否需要将区域A和B中的相应的一个或每个返回到缓冲器的前导存储区域，以及 如果可能性判断是肯定的，则缓冲器是否具有允许数据存储和数据读取中的相应的一个或每个的至少预定数量的存储区域的可能性判断，第二设备将第一设备放置在 第一装置提供肯定判断的条件，并执行对应的一个或每个数据存储和读取; 以及第三设备，如果所述第一设备的判断是肯定的，则执行所述简单数据存储和读取中的所述至少一个，而没有所述第二设备的返回和可能性判断。