Receiving apparatus and receiving method
A receiving apparatus includes a first sample circuit configured to extract first binary data based on a first voltage and a clock timing of a received signal, a second sample circuit configured to extract second binary data based on an adjustable second voltage and a clock timing of the received signal, and a waveform processor configured to acquire a plurality of the second binary data from the second sample circuit using a pattern, the pattern corresponding to the first binary data extracted by the first sample circuit with consecutive sampling timings, determine an appearance frequency of the received signal based on the plurality of second binary data and the first binary data, and generate waveform information of the received signal according to the determined appearance frequency.
1. A receiving apparatus comprising:
a first sample circuit configured to extract first binary data based on a first voltage and a clock timing of a received signal;
a second sample circuit configured to extract second binary data based on an adjustable second voltage and an adjustable clock timing of the received signal; and
a waveform processor configured to:
acquire a plurality of the second binary data from the second sample circuit using a pattern, wherein the pattern includes a plurality of bits indicating presence or absence of the first binary data extracted at a plurality of sampling timings, respectively;
determine an appearance frequency of the received signal based on the plurality of second binary data and the first binary data; and
generate waveform information of the received signal according to the determined appearance frequency.
2. The receiving apparatus according to claim 1 , wherein the waveform processor is further configured to statistically process the second binary data by sampling the received signal a plurality of times using the pattern to generate the waveform information.
3. The receiving apparatus according to claim 2 , wherein the waveform processor is further configured to repeatedly acquire the second binary data and perform the statistical processing up to an upper limit determined according to an appearance frequency of each of a plurality of patterns.
4. The receiving apparatus according to claim 3 , wherein the appearance frequency of each of the plurality of patterns is determined based on the first binary data and a part of the second binary data.
5. The receiving apparatus according to claim 1 , wherein the waveform processor is further configured to generate the waveform information using at least one of hue, saturation, or lightness according to the appearance frequency.
6. A receiving method comprising:
extracting first binary data based on a first voltage and a clock timing of a received signal;
extracting second binary data based on an adjustable second voltage and adjustable clock timing of the received signal;
acquiring a plurality of the second binary data using a pattern, wherein the pattern includes a plurality of bits indicating presence or absence of the first binary data extracted at a plurality of sampling timings, respectively;
determining an appearance frequency of the received signal based on the plurality of second binary data and the first binary data; and generating waveform information of the received signal according to the determined appearance frequency.
7. The method of claim 6 , wherein generating waveform information of the received signal further comprises:
statistically processing the second binary data by sampling the received signal a plurality of times using the pattern.
8. The method of claim 7 , further comprising:
repeatedly acquiring the second binary data and performing the statistical processing up to an upper limit determined according to an appearance frequency of each of a plurality of patterns.
9. The method of claim 8 , wherein the appearance frequency of each of the plurality of patterns is determined based on the first binary data and a part of the second binary data.
10. The method of claim 6 , further comprising:
generating the waveform information using at least one of hue, saturation, and lightness according to the appearance frequency.