公开(公告)号：US4546444A

公开(公告)日：1985-10-08

申请号：US475505

申请日：1983-03-15

Applicant: David C. Bullis

Inventor： David C. Bullis

IPC: G01N21/89 ,  G06F5/16

CPC classification number: G06F5/16 ,  G01N21/89 ,  G01N2021/8912

Abstract: A data compression interface is characterized by a memory system having an architecture configured from a first and a second serial memory connected in parallel. One memory serves during alternate frames as a data collection memory while the other serves during that same frame as an output memory.

Abstract translation: 数据压缩接口的特征在于具有由并联连接的第一和第二串行存储器配置的架构的存储器系统。 一个存储器在替代帧期间用作数据采集存储器，而另一个存储器在作为输出存储器的同一帧期间提供。

公开(公告)号：US4445064A

公开(公告)日：1984-04-24

申请号：US488374

申请日：1983-04-25

Applicant: David C. Bullis

Inventor： David C. Bullis

IPC: B06B1/02 ,  H01L41/08

CPC classification number: B06B1/0253 ,  B06B2201/55

Abstract: A motional bridge circuit for generating feedback signals proportional to the vibration of an ultrasonic transducer is modified by means of an active filter in the feedback circuit which is coupled to a starting circuit that raises the Q of the active filter when a signal is not present in the feedback loop to change the active filter from a mode suppressant to a self-oscillating state.

Abstract translation: 用于产生与超声波换能器的振动成比例的反馈信号的运动桥接电路通过反馈电路中的有源滤波器来修改，该有源滤波器耦合到启动电路，当不存在信号时，启动电路会提高有源滤波器的Q 反馈回路将有源滤波器从模式抑制器改变为自振荡状态。

公开(公告)号：US4308455A

公开(公告)日：1981-12-29

申请号：US163099

申请日：1980-06-26

Applicant: David C. Bullis ,  Alan G. Montross

Inventor： David C. Bullis ,  Alan G. Montross

IPC: G06K7/10 ,  G06K7/016 ,  G06K7/14 ,  G08C9/06

CPC classification number: G06K7/1491 ,  G06K7/0166 ,  G06K7/14

Abstract: A method for reading bar-coded labels by taking ratios of successive bars and spaces, then discriminating and categorizing the ratios of one of four possibilities. This output is combined and decoded into characters using a read-only-memory. The characters along with information on spacing between the characters is then passed to a microprocessor. The microprocessor decides which of the characters are valid and assembles a complete scans worth of information by making use of the data relating to the separation between characters. Handling the data in this fashion provides a means to assemble data from partial scans of the label into one complete scan.

Abstract translation: 通过采用连续条形和空格的比例来读取条形码标签的方法，然后区分和分类四种可能性之一的比率。 该输出被组合，并使用只读存储器将其解码为字符。 字符以及字符之间的间隔的信息然后传递给微处理器。 微处理器通过利用与字符之间的间隔相关的数据来确定哪些字符是有效的，并且组合完整的扫描信息。 以这种方式处理数据提供了将数据从标签的部分扫描组合成一个完整扫描的手段。