diff --git a/tv/tuner/1.0/default/Demux.cpp b/tv/tuner/1.0/default/Demux.cpp
index b74f6ec..7e1f5ac 100644
--- a/tv/tuner/1.0/default/Demux.cpp
+++ b/tv/tuner/1.0/default/Demux.cpp
@@ -93,9 +93,9 @@
 Return<void> Demux::openTimeFilter(openTimeFilter_cb _hidl_cb) {
     ALOGV("%s", __FUNCTION__);
 
-    sp<TimeFilter> timeFilter = new TimeFilter(this);
+    mTimeFilter = new TimeFilter(this);
 
-    _hidl_cb(Result::SUCCESS, timeFilter);
+    _hidl_cb(Result::SUCCESS, mTimeFilter);
     return Void();
 }
 
diff --git a/tv/tuner/1.0/default/Demux.h b/tv/tuner/1.0/default/Demux.h
index 6c46b0d..582c107 100644
--- a/tv/tuner/1.0/default/Demux.h
+++ b/tv/tuner/1.0/default/Demux.h
@@ -153,6 +153,11 @@
     std::map<uint32_t, sp<Filter>> mFilters;
 
     /**
+     * Local reference to the opened Timer Filter instance.
+     */
+    sp<TimeFilter> mTimeFilter;
+
+    /**
      * Local reference to the opened DVR object.
      */
     sp<Dvr> mDvr;
diff --git a/tv/tuner/1.0/default/TimeFilter.cpp b/tv/tuner/1.0/default/TimeFilter.cpp
index 0b1fd1c..cec824f 100644
--- a/tv/tuner/1.0/default/TimeFilter.cpp
+++ b/tv/tuner/1.0/default/TimeFilter.cpp
@@ -34,24 +34,32 @@
 
 TimeFilter::~TimeFilter() {}
 
-Return<Result> TimeFilter::setTimeStamp(uint64_t /* timeStamp */) {
+Return<Result> TimeFilter::setTimeStamp(uint64_t timeStamp) {
     ALOGV("%s", __FUNCTION__);
+    if (timeStamp == INVALID_TIME_STAMP) {
+        return Result::INVALID_ARGUMENT;
+    }
+    mTimeStamp = timeStamp;
+    mBeginTime = time(NULL);
 
     return Result::SUCCESS;
 }
 
 Return<Result> TimeFilter::clearTimeStamp() {
     ALOGV("%s", __FUNCTION__);
+    mTimeStamp = INVALID_TIME_STAMP;
 
     return Result::SUCCESS;
 }
 
 Return<void> TimeFilter::getTimeStamp(getTimeStamp_cb _hidl_cb) {
     ALOGV("%s", __FUNCTION__);
+    if (mTimeStamp == INVALID_TIME_STAMP) {
+        _hidl_cb(Result::INVALID_STATE, mTimeStamp);
+    }
 
-    uint64_t timeStamp = 0;
-
-    _hidl_cb(Result::SUCCESS, timeStamp);
+    uint64_t currentTimeStamp = mTimeStamp + difftime(time(NULL), mBeginTime) * 900000;
+    _hidl_cb(Result::SUCCESS, currentTimeStamp);
     return Void();
 }
 
@@ -66,6 +74,7 @@
 
 Return<Result> TimeFilter::close() {
     ALOGV("%s", __FUNCTION__);
+    mTimeStamp = INVALID_TIME_STAMP;
 
     return Result::SUCCESS;
 }
diff --git a/tv/tuner/1.0/default/TimeFilter.h b/tv/tuner/1.0/default/TimeFilter.h
index 7131df8..cb3f29d 100644
--- a/tv/tuner/1.0/default/TimeFilter.h
+++ b/tv/tuner/1.0/default/TimeFilter.h
@@ -19,6 +19,7 @@
 
 #include <android/hardware/tv/tuner/1.0/ITimeFilter.h>
 #include "Demux.h"
+#include "time.h"
 
 using namespace std;
 
@@ -35,6 +36,8 @@
 
 using FilterMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
 
+#define INVALID_TIME_STAMP -1
+
 class Demux;
 
 class TimeFilter : public ITimeFilter {
@@ -57,6 +60,8 @@
 
   private:
     sp<Demux> mDemux;
+    uint64_t mTimeStamp = INVALID_TIME_STAMP;
+    time_t mBeginTime;
 };
 
 }  // namespace implementation