Invention Grant
US4727424A Sampled data filtering system, including a crossbar switch matrix, as
for a ghost cancellation system
失效
采样数据过滤系统，包括交叉开关矩阵，如重影取消系统
- Patent Title: Sampled data filtering system, including a crossbar switch matrix, as for a ghost cancellation system
- Patent Title (中): 采样数据过滤系统，包括交叉开关矩阵，如重影取消系统
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Application No.: US919494Application Date: 1986-10-16
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Publication No.: US4727424APublication Date: 1988-02-23
- Inventor: Tzy-Hong Chao
- Applicant: Tzy-Hong Chao
- Applicant Address: NJ Princeton
- Assignee: RCA Corporation
- Current Assignee: RCA Corporation
- Current Assignee Address: NJ Princeton
- Main IPC: H03H15/02
- IPC: H03H15/02 ; H04N5/21 ; H04N5/213
Abstract:
A sampled data filter used in a television automatic ghost cancellation system employs a single chain of cascaded delay elements and a crossbar switch matrix to implement the several different delayed sequences of samples that are used by the system to cancel several ghost signals. The rows of switch elements in the crossbar switch matrix are coupled to the individual delay elements, and the columns of the matrix are coupled to sample scaling circuitry. The scaled samples are summed to develop a psuedo-ghost signal which is combined with the input signal to cancel the ghost signal components.
Public/Granted literature
- US4234921A Tester for electronic engine control systems Public/Granted day:1980-11-18
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