发明名称 |
Location detector for digital cable television appliances |
摘要 |
A method of auditing operation of a cable television appliance consistent with certain embodiments involves detecting an event that triggers an audit; generating a fingerprint value, wherein the fingerprint value is function of the cable television network characteristics at an authorized installation location; comparing the fingerprint value with a stored reference value; if the fingerprint value is within specified limits of the stored reference value, permitting the cable television appliance to carry out a normal operational function; and if the fingerprint value is outside of specified limits of the stored reference value, inhibiting the cable television appliance from carrying out a normal operational function. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
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申请公布号 |
US7644424(B2) |
申请公布日期 |
2010.01.05 |
申请号 |
US20050085369 |
申请日期 |
2005.03.21 |
申请人 |
SONY CORPORATION;SONY ELECTRONICS INC. |
发明人 |
PEDLOW, JR. LEO M.;SADJA ARAN LONDON;HOLCOMB ERIC JAMES |
分类号 |
H04N7/10;H04N7/16;H04N7/173 |
主分类号 |
H04N7/10 |
代理机构 |
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代理人 |
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地址 |
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