What is TV tuner Card-How to choose a good tv tuner card

A TV tuner card is a computer component that allows a computer receives a television signals and transponder the data .It is a kind of television tuner. Most TV tuners also can be used as video capture cards. They have been incorporated in such a way that you can record Television programs into a computer’s hard disk drive.

The interfaces for TV tuner cards are most commonly either PCI tv tuner cards or the newer PCI Express (PCIe) tuner cards .but PCMCIA, ExpressCard, or USB devices also exist. In addition, some video tuner cards double as TV tuners, notably the ATI All-In-Wonder series. The card contains a tuner and an analog-to-digital converter (collectively known as the analog front end) along with demodulation and interface logic. Some lower-end cards lack an onboard processor and, like a Winmodem, rely on the system’s CPU for demodulation.

There are currently four kinds of tuner card on the market:

Analog TV tuner cards

Analog television cards output a raw video stream, suitable for real-time viewing but ideally requiring some sort of compression if it is to be recorded. More advanced TV tuners encode the signal to Motion JPEG or MPEG, relieving the main CPU of this load. Some tv cards also have analog input (composite video or S-Video) and many also provide FM radio.

Hybrid TV tuner cards

A hybrid tuner has one tuner that can be configured to act as an analog tuner or a digital tuner. Switching between the systems is fairly easy, but cannot be done immediately. The card operates as a digital tuner or an analog tuner until reconfigured.

Mobile TV tuner cards

External TV tuner card attachments are available for mobile phone handsets like the iPhone, for watching mobile TV, via TV stations on 1seg in Japan (SoftBank), and for soon for the proprietary subscription-based MediaFLO in the U.S. (Qualcomm). There is also a “con

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Installed a HDTV Tuner Card on my Computer

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