Kathryn A. Engholm - Beaverton OR Mark D. Demory - Milton-Freewater OR
Assignee:
Tektronix, Inc. - Beaverton OR
International Classification:
G09G 500
US Classification:
345661, 345764
Abstract:
A method of zooming in/out for a graphics image on a display screen encompasses drawing a rectangle on the display screen, either entirely within a display area of the display screen for two-dimensional zoom in/out or along one axis within a peripheral area of the display screen for one-dimensional zoom in/out. Once the rectangle is drawn by dragging from one corner to an opposite corner, tapping or clicking within the rectangle causes a zoom in action and tapping or clicking outside the rectangle causes a zoom out action.
A touch controlled zoom and pan of graphic displays is achieved using only a touch screen and rotary knob by designating various areas on a touch screen. Touching one of the designated areas determines the function to be performedâzoom along one axis or in two dimensions or pan along one axis or in two dimensions. The zoom or pan is then performed in response to the rotation of a rotary encoder knob. For panning dragging the touch along an axis in lieu of rotating the rotary encoder knob performs the function. Alternatively the same designated areas may be used to determine either the zoom or pan function by using either a âtouch and holdâ technique for zoom or a âtouch and goâ technique for pan.
Measuring Wireless Network Performance Via A World Wide Network
Kathryn A. Engholm - Beaverton OR Paul J. Stadnik - Lake Oswego OR John F. Turpin - Tigard OR
Assignee:
Tektronix, Inc. - Beaverton OR
International Classification:
H04Q 720
US Classification:
455423
Abstract:
Measuring wireless network performance from a remote site uses a mobile handset that may include an appropriate world wide network browser. A user connects the mobile handset to the remote site via the wireless network which is coupled to the world wide network. Once the connection is made, application software at the measurement site sends commands to the mobile handset and in response the mobile handset sends measurement data to the application software. The application software processes the data to provide information about the wireless network performance including analyses for predictive and diagnostic purposes, since measurement data from many handsets, many locations and many base stations at many times may be collected at one central location.
Display Of Code Power Levels And Relationships Of Multiple Spreading Factor Orthogonal Codes In A Cdma Signal
A display of code power levels and relationships of multiple spreading factor orthogonal codes in a code division multiple access (CDMA) signal has a first code graph of code domain power (CDP) for all the codes at the largest code spreading factor that includes all codes at all spreading factors plotted in a linear code indexing order and a second graph of CDP where the codes are plotted in bit-reversed order to group together the sub-codes of each code of lower spreading factor. Markers on each graph are tied together such that movement of one marker on one graph to a particular code value causes the other marker on the other graph to move to the corresponding code value. The sub-codes related to a particular code bar in the graphs indicated by the markers may be differentiated by using grey scale or color variations. A base code power level indicator, which may be in the form of a horizontal bar on the bit-reversed order graph spanning the group of sub-codes corresponding to a particular spreading factor, provides a power indication for the base code.
A method of identifying a signal type uses parameters of the signal as a basis for automatic identification. A signal of interest is selected from a display of a spectral waveform for a specified frequency. An occupied bandwidth for the signal of interest is estimated and, if the occupied bandwidth is common to more than one known signal type, a complementary cumulative distribution function of peak power for the signal of interest is estimated. The signal type may be identified as a function of these parameters. Additionally the frequency of the signal of interest may be compared with a database of spectral assignments for known signal types to provide further information about the signal of interest.
Time History Display Of Orthogonal Code Power Levels
Thomas L. Kuntz - Portland OR, US Kathryn A. Engholm - Beaverton OR, US
Assignee:
Tektronix, Inc. - Beaverton OR
International Classification:
H04B 1/707 G01R 13/00
US Classification:
375140, 375224, 702 60, 702 67
Abstract:
A time history display of orthogonal code power levels by spreading factor is generated by displaying each data record of code domain power as a line, with each point in the line representing a different code index and the color or brightness of each data point representing the associated base code power level. With the data records displayed as contiguous lines, as each new data record is acquired it is added as a new line of the display while the line representing the oldest data record is deleted from the display. For communications standards where the code spreading factor varies, both bit-reversed and Walsh code graphs are displayed to show the grouping of the sub-codes that make up a base code. In this way the time history display indicates timing and trend information to a user.
Visualization Of Active Codes, Their Spreading Factors And Power Levels, In A Code Domain Power Display
Kathryn A. Engholm - Beaverton OR, US Xiaofen Chen - West Linn OR, US
Assignee:
Tektronix, Inc. - Beaverton OR
International Classification:
H04J 1/16
US Classification:
370241
Abstract:
A display of code domain power (CDP) for a code domain multiple access (CDMA) signal having multiple spreading factors is in the form of a three-dimensional graphic having as axes code domain power, code index and spreading factor to provide a visual indication of both power and spreading factor for active codes. Sub-codes of base codes may be identified by any suitable means, such as highlighting. Sub-codes may be suppressed and the power level of the base codes adjusted accordingly to represent the total power of the active codes.
Status Ribbon For Display For Multiple Channels/Codes
A status ribbon to display a signal characteristic for multiple channels/codes within a region of interest has a plurality of stripes. A value for each stripe is represented by a trait of the stripe, such as color or brightness. The trait may represent a range of a signal parameter or may represent a pass/caution/fail value for the signal parameter, or may represent code activity. A window may be used to select a subset of channels/codes for additional detail, the additional detail being displayed textually adjacent the status ribbon. Also a subsidiary status ribbon may be displayed for channels/codes where each stripe of the primary status ribbon represents more than one channel/code, each stripe in the subsidiary status ribbon representing a single channel/code.