TV signal determining system, TV signal processing system utilizing which and method thereof
A TV signal determining system utilized for determining a type of a TV signal includes: a detection unit, for utilizing a predetermined profile to detect if the TV signal has a signal segment corresponding to the predetermined profile to generate a detection result signal; and a determining unit, coupled to the detection unit, for determining the type of the TV signal according to the detection result signal. A TV signal processing system utilizing the TV signal determining system and a related method are also disclosed.
1. A TV signal determining system, for determining a type of a TV signal, comprising:
a detection unit, for utilizing a predetermined profile to detect if the TV signal has a signal segment corresponding to the predetermined profile to generate a detection result signal; and
a determining unit, coupled to the detection unit, for determining the type of the TV signal according to the detection result signal, wherein the detection unit is a matched filter including at least one delay stage corresponding to at least one coefficient.
2. The TV signal determining system of claim 1 , wherein the detection result signal is a weighted signal, where the weighted signal has a higher weight value for the signal segment when a profile of the signal segment more closely matches the predetermined profile.
3. The TV signal determining system of claim 1 , wherein the predetermined profile is a color sub-carrier profile corresponding to a specific TV standard, and the number of delay stages corresponds to the color sub-carrier profile.
4. The TV signal determining system of claim 1 , wherein the TV signal is a digital TV signal, the detection unit operates in a digital domain, and the TV signal determining system further comprises an analog to digital converter (ADC) for converting an analog TV signal into the digital TV signal.
5. A TV signal processing system, comprising:
a detection unit, for utilizing a predetermined profile to detect if a TV signal has a signal segment corresponding to the predetermined profile to generate a detection result signal; and
a video decoder, coupled to the detection unit, for processing the TV signal according to the detection result signal; wherein the detection unit is a matched filter including at least one delay stage corresponding to at least one coefficient.
6. The TV signal processing system of claim 5 , wherein the detection result signal is a weighted signal, where the weighted signal has a higher weight value for the signal segment when a frequency of the signal segment more closely matches the predetermined profile.
7. The TV signal processing system of claim 5 , wherein the predetermined profile is a color sub-carrier profile corresponding to a specific TV standard, and the number of delay stages corresponds to the sub-carrier profile.
8. The TV signal processing system of claim 5 , wherein the TV signal is a digital TV signal, the detection unit operates in a digital domain, and the TV signal determining system further comprises an analog to digital converter (ADC) for converting an analog TV signal into the digital TV signal.
9. The TV signal processing system of claim 5 , wherein the video decoder locks a vertical sync signal and a horizontal sync signal of the TV signal according to the detection result signal.
10. A TV signal determining method, for determining a type of a TV signal, comprising:
utilizing a predetermined profile to detect if the TV signal has a signal segment corresponding to the predetermined profile to generate a detection result signal; and
determining the type of the TV signal according to the detection result signal, wherein the detection result signal is a weighted signal, where the weighted signal has a higher weight value for the signal segment when a profile of the signal segment more closely matches the predetermined profile.
11. The TV signal determining method of claim 10 , wherein the predetermined profile is a color sub-carrier profile corresponding to a specific TV standard.
12. The TV signal determining method of claim 10 , wherein the TV signal is a digital TV signal, the detection unit operates in a digital domain, and the TV signal determining method further comprises converting an analog TV signal into the digital TV signal.
13. A TV signal processing method, comprising:
utilizing a predetermined profile to detect if a TV signal has a signal segment corresponding to the predetermined profile to generate a detection result signal; and
decoding the TV signal according to the detection result signal, wherein the detection result signal is a weighted signal, where the weighted signal has a higher weight value for the signal segment when a profile of the signal segment more closely matches the predetermined profile.
14. The TV signal processing method of claim 13 , wherein the predetermined profile is a color sub-carrier profile corresponding to a specific TV standard.
15. The TV signal processing method of claim 13 , wherein the TV signal is a digital TV signal, the detection unit operates in a digital domain, and the TV signal determining method further comprises converting an analog TV signal into the digital TV signal.
16. The TV signal processing method of claim 13 , wherein the step of decoding the TV signal locks a vertical sync signal and a horizontal sync signal of the TV signal according to the detection result signal.
17. A TV signal determining system, for determining a type of a TV signal, comprising:
a detection unit, for utilizing a predetermined profile to detect if the TV signal has a signal segment corresponding to the predetermined profile to generate a detection result signal; and
a determining unit, coupled to the detection unit, for determining the type of the TV signal according to the detection result signal, wherein the detection result signal is a weighted signal, where the weighted signal has a higher weight value for the signal segment when a profile of the signal segment more closely matches the predetermined profile.
18. A TV signal processing system, comprising:
a detection unit, for utilizing a predetermined profile to detect if a TV signal has a signal segment corresponding to the predetermined profile to generate a detection result signal; and
a video decoder, coupled to the detection unit, for processing the TV signal according to the detection result signal, wherein the detection result signal is a weighted signal, where the weighted signal has a higher weight value for the signal segment when a frequency of the signal segment more closely matches the predetermined profile.