Samsung Galaxy Microwave Oven Interface
Contents
1. average user should not need to exit a sub menu more than three times to reach their desired function Finally the control panel should be compact and not increase the height and width of the microwave oven The control panel should be no more than twenty percent of the total width This may causes a reduction of buttons and increase the number of items in a given option menu The user should be able access any function in less than twenty seconds 2 4 Problems 2 4 1 Lack of Feedback Having positive feedback to inform the users that what they are searching through the places is desirable With the single line monochrome LCD screen the amount of display information at a given time is limited Without multi line display an option menu is slow to iterate over 2 4 2 Ambiguous Labels Some of the labels in this model have ambiguous names For example the first category of buttons is labeled Sensor Cooking The name is ambiguous and the buttons within this category offer little to no information about the purpose of this category The same applies to Eco Mode Under Cooking Presets there are button for Kids Meals and Snacks The distinction between the two is not obvious According to the manual chicken nuggets and hot dogs are under kids meals while cheese sticks and chicken wings are considered snacks 2 4 3 Complex Key Press Series After reading the user manual some features are non trivial Nowhere on the interface suggested t2. Off Figure 1 ME17H703SH s interface 2 Analyze 2 1 Functionality The primary function of a microwave oven is to heat up food and beverages The basic function is one stage cooking In this mode the microwave oven will automatically set the power level to highest The user simply input the time for 20 minutes enter 2 0 0 0 Other function such as Fit Choice press the button repeatedly to cycle through the available items enter the number with the number pad and press the Enter Start button Different function has its own option menu 2 2 Stakeholders Microwave oven is a common kitchen appliance that is found in most home and offices school cafeteria They are usually placed on countertops or higher Due to the location microwave ovens are used by anyone that is at least six years of age Although there could be a function that matches the exact need of the users many solve their needs with the basic function 2 3 Requirements and Goals Most importantly microwave oven is a common kitchen appliance and should not require training The interface should be obvious to anyone who has prior experience with microwave oven The user should not be required to read through the user manual to navigate the option menu The average user should be able to learn how to use each function in two minutes Each button should have one or more clear and distinct functions The label on the buttons should clearly indicate the purpose of the buttons The
3. Samsung Galaxy Microwave Oven Interface By Derek Lun DerekLun gmail com 1 Description Many of us use microwave oven in our daily life As a busy engineering student with a slight gaming addiction it is my preferred way of heating up food and beverages Yet very few of us use more than the basic function of heating our food by setting the timer Not only are there no Standardization of the interface of these devices standardization within the same manufacturer is also non existence Compound with varying form factor and functionalities using an unfamiliar microwave oven can lead to a frustrating and time consuming experience In this report am specifically targeting Samsung s microwave oven model ME17H703SH The interface of ME17H703SH can be seen in Figure 1 to the right The interface has a simple single line monochrome LCD display for user feedback The inputs are divided into five sections Sensor Cooking Cooking Presets Light turntable and Vent Buttons within the Sensor Cooking and Cooking Presets section may take user into an option menu where user cycle through options one at a time All button names are bolded to improve the readability of this report Popcorn Potato Pitta Cook Retina Veggies Meals Snacks Au Solten Kann DBetinost EEIE Warm 1 2 3 4 5 6 7 a g Power 0 Kitchen Lewel Timer stoe 30 ENTER cean e Start_ se opema Stk Get Timer Hi Le or Ons Off Ons Ott 2 Speed Delay
4. ce area 4 Frozensandwiches 5 Nachos 2 French fries 3 Chicken wings of the buttons The screen can serves as the user 6 Hot dogs 7 Potato skins manual and informs the users about the particular function of the button they pressed With a higher Figure 2 menu with higher resolution display resolution display more information can be shown at once This can give user more feedback in shorter time This method may also levitate some of the complex key press series required In this model the user cycles through the option menu one item at a time Only one item is displayed at a given time In figure 2 seen on the right the display is showing the options of both the Kids Meals and Snacks button This enables us to merge buttons of similar functions together The user can see the full purpose of this button without the need to cycle through the menu The average key presses required to reach the desired function is reduced In this model the user needs to press and the Kids Meals button to enter the Kids Meals menu and four more times to reach the hot dogs option In this design it is possible to two key presses first press to enter the menu and press 6 to select hot dogs The most complex solution is to add soft buttons much like the buttons found on Samsung s smartphone highly increases the flexibility The best solution is also the most expensive solution and this will noticeably increase the production cost of this unit Not all button
5. e Microwave oven is design to have modular construction Minor redesign of the front panel and software is needed The second solution of adding a higher resolution display is more challenging The hardware changes needed to support this is more significant To maintain readability at the same distance while displaying more information the text is needed to be bigger Minor changes to the frame maybe required The third solution requires the most engineering work to accomplish To drive such display and input method the core micro controller may need a substantial upgrade Assumption was made that the company contains the technologies required to implement the third solution Solution 1 Solution 2 Solution 3 Deliverable Man hour Cost Man hour Cost Man hour Cost Focus group and data 20 1000 20 1000 20 1000 analysis Mockup prototyping 10 S500 20 1000 20 1000 and user feedback Redesign and medium 20 1000 40 2000 50 2500 fidelity prototyping Heuristic evaluation 20 2000 40 4000 40 4000 and user evaluation Redesign and 40 2000 80 4000 200 10000 implementation Total 110 6500 200 12000 330 18500 EECE418 Assignment 1 Self Assessment Report vDereK Tain Name Student 4 114 1A e Date Jan 19 2015 Note each element must have a justification otherwise it will be assumed Strongly disagree If additional space is needed for a justification use a separate page and label justification with the Assessment Ass
6. essment 1 Strongly disagree 2 Disagree 3 Neutral 4 Agree 5 Strongly Agree n a Not applicable Title page includes all elements clearly and included all elements to the best of my The primary functionality of the interface is described well rne pasic use case 15 atrainht FarrrarA How each function is accessed is described clearly not explain all function in depth The user manual Justification Justification Justification Justification Justification Justification All the relevant stakeholders are identified The stakeholder 1S obvious for common item The impact of the interface on each stakeholder is described well Lt LONCECKEVLECWea my morner Ffar thie The functional requirements from the users point of view are identified well Major ty ot tne equirements are fiinctianal The non functional requirements from the users point of view are identified well some non tunctional requirements ara identified Constraints on the system related to the user experience are clearly described Constraints are mlaariliw liaetadA The list of usability and user experience goals is clearly articulated They are Listed clearly in the end of each naraaranh Justification The priorities assigned to the items in the list of usability user experience goals are well justified Dome exPlanaT1ONn 1s given Ffar aanh From the prioritized l
7. hat there is a multi stage cooking function To use such function a series of number pad and Power Level input is required Navigation within the Cooking Presets options is equally complex 3 Design Goals and Evaluation Since the majority users only use the basic function the simple and straight forward solution is to reevaluate which features are common and should be maintain The features that are uncommonly used are considered irrelevant and should be removed This may remove some of the current buttons and free up space on the control panel for more specific buttons For example in this specific model we may consider that only the chicken nuggets within the Kids Meals is deemed a common use case and replace the Kids Meals button with a chicken nuggets button Without the unnecessary features the required feedback to guide users is simplified The need to navigate through complex option menu is less severed This is due to the fact that fewer options are available and a specific button will bring the user closer to the desired function The less complex key strokes are required with a shallower option menu Each button has a more distinct and specific role reducing ambiguously and confusing labels A more complex solution is to implement a higher Q Chicken nuggets 1 Cheese sticks resolution display In order to maintain all the current features while reducing ambiguity we can display more information on the display than the surfa
8. ist of goals three main usability and user experience questions are identified Each problem clearly explain in each each section For each usability and user experience question identified the performance of the current system is well analysed and documented between current system and The list of goals have objectifable measures for evaluating the user interface They are l sted clearly n the end of each naraaranh Three significant problems with the interface have been identified Each problem clearly explain in each each section All the problems identified are related to the user experience no xtra LUNCTLONS nas haan addan Justification Justification Justification Justification Justification Justification None of the problems identified are technical issues The technical items are only mention in the coat eaactimate None of the problems identified are nice to have features accessible it is not easy distinguish what is Three possible solutions are clearly identified BaChn SOLUTLON Nas 1CTS OWN e canh aantainn For each problem the solution presented is well thought out and described how it solves the problem it 15 peen TNrOUGNLY avnlainada The budget captures the main costs associated with each solution Lhe Cost ana The assumption 1c atatadA The budget doesn t miss any obvious costs Ci Venture Design no obvious cos
9. s needs to be soft buttons Buttons such as the numbers Enter Start and Stop Clear is commonly used and not needed Buttons such as Popcorn has no functions when inside the Reheat option By having soft buttons the interface can display only relevant buttons to the user This solution can inform what a user can do within a certain option and also informs the user what to ignore by not displaying a given option With displaying only relevant soft buttons each button can take up more space and contain more information on its surface further reducing the ambiguity of the buttons After selling the microwave oven a software upgrade to improve the user experience and customize the user interface to suit the user needs is possible The menu display can highly flexible in term of shape size and the number of buttons In figure 2 each option needs to be map to a physical button this restriction no longer applies This can greatly reduce the number and the complexity of the key press series required to access a given option on average Determining which features are common is critical The interface design should be base around common use cases Rare use cases may be the last option in the menu or not supported at all Focus groups will be required to understand the needs of different market segments The feedback need to be analyzed and the prototype should be built to test the hypothesis To implement the first solution alone should be relatively inexpensiv
10. ts is Justification Justification Justification Justification Justification Comments The budget doesn t have any irrelevant costs UNLY THE KR amp eVD COSTS are InaliuidadA The figures in the budget are well justified from reliable sources The cost per hour data 1S based on MANNA Fiduirec The presentation of the report is easy to read button names should make this more There are no grammar or spelling errors in the report v d check but English is not my first Material over the recommended 3 pages i e appendices tables figures text is well justified rne Text 15 exactly 2 nanac
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