Semiconductor device and display apparatus
First Claim
1. A semiconductor device which controls display of a display panel, the semiconductor device comprising:
- a receiving circuit which receives a plurality of communication frames,each of the plurality of communication framesbeing transmitted with a first period or a second period different from the first period, andincluding a synchronization code and data;
a logic circuit configured to operate in two operation states, the two operation states including a first operation state and a second operation state,in the first operation state, one or more communication frames of the first period received by the receiving circuit are each processed as data other than a digital video signal, wherein the data other than the video signal include control data from the semiconductor device and dummy data attached to a payload of a respective communication frame of the one or more communication frames, andin the second operation state, one or more communication frames of the second period received by the receiving circuit are each processed as the digital video signal;
a detecting circuit which detects the synchronization code from each of the plurality of communication frames received by the receiving circuit;
a measuring circuit which measures a period of the synchronization code detected in each of the plurality of communication frames, the period of the synchronization code either corresponding to the first period or the second period; and
a determining circuit which determines whether the period of the synchronization code measured corresponds to the first period or the second period, whereinthe logic circuit transitions to the first operation state or the second operation state based on whether the period of the synchronization code measured corresponds to the first period or the second period,wherein the receiving circuit receives at least one frame in a previous operation state even after an operation state has been changed to a new operation state at the receiving circuit.
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Accused Products
Abstract
A semiconductor device includes: a receiving circuit which receives communication frames each transmitted with a first period or a second period that are different from each other and including a synchronization code and data; a logic circuit which has a first operation state in which the received communication frames are each processed as data other than a digital video signal, and a second operation state in which the received communication frames are each processed as the digital video signal; a detecting circuit which detects the synchronization code from each of the received communication frames; a measuring circuit which measures a period of the detected synchronization code; and a determining circuit which determines the measured period. The logic circuit substantially makes a transition to the first operation state or the second operation state according to a result of the determining.
20 Citations
9 Claims
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1. A semiconductor device which controls display of a display panel, the semiconductor device comprising:
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a receiving circuit which receives a plurality of communication frames, each of the plurality of communication frames being transmitted with a first period or a second period different from the first period, and including a synchronization code and data; a logic circuit configured to operate in two operation states, the two operation states including a first operation state and a second operation state, in the first operation state, one or more communication frames of the first period received by the receiving circuit are each processed as data other than a digital video signal, wherein the data other than the video signal include control data from the semiconductor device and dummy data attached to a payload of a respective communication frame of the one or more communication frames, and in the second operation state, one or more communication frames of the second period received by the receiving circuit are each processed as the digital video signal; a detecting circuit which detects the synchronization code from each of the plurality of communication frames received by the receiving circuit; a measuring circuit which measures a period of the synchronization code detected in each of the plurality of communication frames, the period of the synchronization code either corresponding to the first period or the second period; and a determining circuit which determines whether the period of the synchronization code measured corresponds to the first period or the second period, wherein the logic circuit transitions to the first operation state or the second operation state based on whether the period of the synchronization code measured corresponds to the first period or the second period, wherein the receiving circuit receives at least one frame in a previous operation state even after an operation state has been changed to a new operation state at the receiving circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification