cTimeSynchronizer

Time synchronization helper class for synchronizing value from an external clock to internal clock values. More...

Classes
struct	tDatum
	Struct consisting of internal and external time. More...

Public Member Functions
	cTimeSynchronizer ()
	Constructor.
tVoid	Reset ()
	Resets object to initial state. More...
tVoid	AddDatum (tTimeStamp nInternalTime, tTimeStamp nExternalTime)
	Adds a new data point of internal and extrernal time values to the data collection. More...
tTimeStamp	GetInternalTime (tUInt64 nExternalTime) const
	Returns approximated value of internal clock corresponging to given external clock value. More...

Protected Attributes
tDatum	m_aDatum [nMaxDatumCount]
	Data points for synchronization.
tDatum	m_oDatumSum
	Sum of all values in m_aDatum.
tInt	m_nValidDatumCount
	Number of data points.
tInt	m_nLastDatumIndex
	Last index in data array.
tFloat64	m_nOffset
	Offset between internal and external time.
tFloat64	m_nScale
	Scale difference between internal and external time.
tFloat64	m_nErrorLimit
	Error limit for accepting or rejecting new data points.

Static Private Attributes
static const int	nMaxDatumCount = 16
	Maximum number of data points.

Detailed Description

Time synchronization helper class for synchronizing value from an external clock to internal clock values.

For the computation a simple linear regression algorithm is used. Maverick values are filtered by a variable percental treshold.

Definition at line 21 of file timesynchronizer.h.

Member Function Documentation

AddDatum()

tVoid AddDatum	(	tTimeStamp	nInternalTime,
		tTimeStamp	nExternalTime
	)

Adds a new data point of internal and extrernal time values to the data collection.

Parameters

nInternalTime	[in] Time of internal clock.
nExternalTime	[in] Time of external clock, corresponding to the value of the internal clock.

Returns

void

This method is real-time safe.\nSee @ref page_real_time_safe.\n

GetInternalTime()

tTimeStamp GetInternalTime

(

tUInt64

nExternalTime

)

const

Returns approximated value of internal clock corresponging to given external clock value.

Parameters

nExternalTime

[in] Time of external clock.

Returns

Approcimated value of internal clock.

This method is real-time safe.\nSee @ref page_real_time_safe.\n

Reset()

tVoid Reset

(

)

Resets object to initial state.

Returns

void

This method is real-time safe.\nSee @ref page_real_time_safe.\n