Do many domestic TVs have HDMI interfaces but no HDCP protocol?

Brother, HDCP is actually a digital encryption function. This function is available on all HDMI interfaces on domestic TVs. You can rest assured; it actually involves patent issues. The DCP Association is managing this thing. Dong: Places like the United States and Europe require formal certification for machines entering the market. The threshold for DCP is an annual fee of 8,000 USD, and the cost of 1 million HDCP KEY is 5,000 or 10,000 USD.

The formal requirement for this function is: each machine must burn an HDCP password, and it must be unique. This password can be reverse-checked and traced back to which manufacturer purchased it from the DCP Association.

Because of the above-mentioned costs, domestic TVs, no matter what brand they are, generally use one password for all machines.

Conclusion: There is no problem you are worried about, domestic TVs They all provide services to the public at no cost and without any impact on functions.