| 摘要 |
PURPOSE:To obtain inexpensively a video signal encoded by 1-bit-time-series digital encoding by forming a loop system with an analogue-signal comparing circuit, temporary memory circuit, and a high-pass-filter circuit. CONSTITUTION:The input video signal to be encoded is inputted to an analogue- signal comparing circuit 104 from the input terminal 1. The output from the circuit 104 is synchronous with the synchronizing signal 107 from a reference clock generator 201, and is stored in the temporary memory circuit 106. From the memory circuit 106, an encoded video signal 108 is outputted, which is supplied to a memory control circuit 203 and to a first filter circuit 109 that is of high-pass characteristic. The output from the circuit 109 is supplied to the comparing circuit 104, and thus the loop is formed. By this constitution of the loop, a digital-encoded video signal of 1-bit time series is obtained without frame memory.
|
