GB2302605A - Slimmer's calculator - Google Patents
Slimmer's calculator Download PDFInfo
- Publication number
- GB2302605A GB2302605A GB9522364A GB9522364A GB2302605A GB 2302605 A GB2302605 A GB 2302605A GB 9522364 A GB9522364 A GB 9522364A GB 9522364 A GB9522364 A GB 9522364A GB 2302605 A GB2302605 A GB 2302605A
- Authority
- GB
- United Kingdom
- Prior art keywords
- calculator
- points
- value
- parameter
- key
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
- G06F15/025—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators adapted to a specific application
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H20/00—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance
- G16H20/60—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to nutrition control, e.g. diets
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H40/00—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices
- G16H40/60—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices
- G16H40/63—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
Abstract
In order to assist slimmers following a diet wherein he or she is allocated a maximum daily points target, the points being related to the calorific value and another parameter of food ingested, a calculator (1) is provided with means (6,..,22) to enable the user to enter a calorie value and a value for the other parameter, e.g. grams of saturated fat. The calculator (1) then calculates the points for the entered data. This points value may be subtracted from a "points left" value to provide the user with an indication of the points they have left for the current day.
Description
Slimmer's Calculator
Description
The present invention relates to a calculator for assisting a person on a diet.
Slimming diets have become extremely popular and many regimes have been proposed. Many such regimes are based on the simple proposition that in order to lose weight, a person must eat food having fewer calories than she/he requires. The number of calories required by an individual is determined by his/her weight and level of activity. A heavy or active person requires more calories than a light or inactive person.
In order to establish the number of calories that a person requires in a day to support her/his energy demand, a value, termed the basal metabolic rate (BMR), is multiplied by a factor determined by the activity level of the person. The value of the BMR is dependent on the sex and weight of a person and tables of this data are readily available to those skilled in art of dietetics.
When a person is following a conventional calorie intake restriction diet (known colloquially as "counting calories"), his/her daily calorie demand is determined from her/his BMR and aaivity level. For instance, a moderately active woman weighing 60kg would have a BMR of 5565 kJ/day and an aaivity factor of 1.3 giving a daily requirement of 7234kJ. In order for this person to lose 0.45kg (alb) in one week, her daily calorie intake must be restriaed to 5142kJ.
The present inventors have established that merely "counting calories" is not ideal and that other factors should be taken into account. However, taking into account additional factors requires the dieter to perform more complex mathematics which is difficult in the bustle of daily life.
It is an aim of the present invention to provide an apparatus whereby a diet regime, more complex than mere "calorie counting", can be readily adhered to.
According to the present invention, there is provided a calculator for assisting a person on a diet regime wherein said person is allocated a maximum daily points target, said points being related to the calorific value and another parameter of food ingested, the calculator comprising means for inputting a first number related to the calorific value of a food item, means for inputting a second number related to said other parameter of the food item, display means and processing means operative to process said numbers according to a pre-programmed algorithm to produce a resultant points value and to control the display to display said resultant points value.
Preferably, the other parameter is saturated fat content but the present invention is not restricted thereto. For example, the simple sugar content of foodstuff may be used as an alternative or additionally.
Preferably, the pre-programmed algorithm is: p=Lf kl k2 where p is the resultant points value, c is the calorific value related number, f is the number related to the other parameter, and k, and k2 are constants.
The value c may be in kilojoules or kilocalories and the constant k, is chosen so that the points target will be in the low tens. Numbers in the low tens are easier for people to deal with than the numbers in the thousands which "calorie counting" involves. If the value c is to be entered in kilocalories, k2 is preferably within the range k,/35 to k,/10, more preferably k > /17.5.
However, if the value c is to be entered in kilojoules, k2 is preferably in the range k,/146.7 to k,/41.8, more preferably k,/72.8. The values for k2 are based on the assumption that f is in grams. Suitable scaling factors will be needed iffis in other units. Conveniently, the resultant points value will be rounded up or down to an integer value. However, values in the range 0.25 to 0.74999 may be rounded to 0.5 and values below 0.25 rounded to 0.0.
Preferably, the calculator has an alphanumeric display. However, a purely numeric display could be used.
Conveniently, the processing means is operable to accumulate said resultant points value. In this way, the calculator can inform a user of the points used or still available in a day.
Prepackaged food in the United Kingdom is normally labelled with both the calorie and saturated fat content and a user need only enter these values into the calculator. However, when food is sold loose or served in a restaurant, this information is not available. In order to solve this problem, the calculator may include memory mean storing a database of data related to the calorific value and the other parameter of a plurality of foodstuffs. Thus, a user will be able to enter the necessary data by identifying the foodstuff and its quantity.
Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 shows a first embodiment of a calculator according to the present invention;
Figure 2 is a block diagram of the electronic circuitry of a calculator according to the present invention;
Figure 3 is a flow diagram illustrating the operation of the calculator of Figure 1;
Figure 4 shows a second embodiment of a calculator according to the present invention; and
Figure 5 is a flow diagram illustrating the operation of the calculator of Figure 4.
Referring to Figure 1, a calculator according to the present invention is physically similar to a conventional calculator and comprises a housing 1, a keypad 3, an on/off switch 4 and an alphanumeric display 5. The keypad 3, however, is tailored to the calculator's particular function and comprises keys 6,..,15 for numbers 0 to 9, key 16 for the decimal point, a calories (CAL) key 17, a saturated fats (SAT FAT) key 18, a calculate (POINTS) key 19, an accumulate (STORE) key 20, a clear (CLEAR) key 21 and a new day (NEW
DAY) key 22.
Referring to Figure 2, the electronic circuitry of the calculator comprises a microprocessor 25, a ROM 27, a RAM 29, a keypad interface circuit 31, a display driver circuit 33 and a bus 35 which interconnects the active components. The keypad interface circuit 31 is coupled to the keypad 3 and detects key presses and notifies the microprocessor 25 of the operation of any of the keys 6,..,22. The display driver circuit 33 controls the display in response to commands form the microprocessor 25. The ROM 27 stores the control program for the microprocessor 25 and constants used in calculations, and the RAM 29 is used to store data input by a user, the results of calculations and intermediate values. The RAM 29 is of a non-volatile type or is provided with power independently of the main on/off switch 4.
The operation of the calculator shown in Figure 1 will now be described. In the following, description of the control of the display 5 in direa response to key presses will be omitted for the sake of clarity. However, it will be appreciated that the microprocessor 25 will control the display 5, via the display driver circuit 33, to indicate to a user that a key 6,..,22 has been fully pressed. Operation of the number and decimal point keys 6,..,16 will result in the display of numbers in the manner of a conventional calculator. Operation of the other keys will be indicated by a suitable descriptive word, e.g. NEW
DAY, POINTS, STORING etc..
Referring to Figure 3, when the calculator is switched on, it performs a self test routine sl during which target and current points left values in the RAM 29 are displayed on the display 5 with the messages "TARGET" and "POINTS LEFT TODAY" respectively. If the self test routine s1 reveals no faults, the microprocessor 25 loops through three keypress test steps comprising "is the NEW DAY key 22" being pressed s2, "is a number or decimal point key 6,..,16" being pressed for direa entry of points and "is the
CAL key 17" being pressed for calculation of points.
If it is determined, at step s2, that the NEW DAY key 22 is being pressed, the microprocessor 25 performs step s5. At step s5, the microprocessor 25 repeatedly determines whether a numerical key 6,..,16 is being pressed to enable the user to enter his/her points target for the day. If a key other that a numerical key 6,..,16 is being pressed, step s6 is performed. At step s6, the microprocessor 25 determines whether the STORE key 20 is being pressed. If not, the microprocessor repeatedly interrogates the keypad interface circuit 31 until it has been pressed. When the STORE key 20 is pressed, the microprocessor 25 performs step s7. At step s7, the microprocessor 25 stored the input points target, or restores the previous value if no numerical keys 6,..,16 have been pressed, in the RAM 29, and sets an accumulated points value, stored in the RAM 29, to zero.The display 5 is then updated at step s20, to show the messages "TARGET n" and "POINTS LEFT TODAY n accumulated points value", where n is the target value..
If it is determined, at step 3, that a number or decimal point key, that is a numerical key, 6,..,16 is being pressed, the microprocessor 25 moves on to step s8. At step s8, the microprocessor 25 determines whether additional numerical keys 6,..,16 are being entered. Once a key other than a numerical key 6,..,16 is pressed, the microprocessor 25 moves on to step s9 where it determines whether the CLEAR key 21 is being pressed. If the CLEAR key 21 is not being pressed, the microprocessor 25 determines whether the
STORE key 20 is being pressed at step s10. If the STORE key is not being pressed, the microprocessor 25 returns to step s9.
If the STORE key 20 is being pressed, the microprocessor 25 performs step s1 1 where the entered number is added to the accumulated points total stored in the RAM 29. Finally, the target and points left values are displayed at step s20.
If it is determined, at step s4, that the CAL key 17 is being pressed at step s4, the microprocessor 25 repeatedly performs a number entry step, step s13, until a non-numeric key is pressed. This enables a user to enter the calorie value for an item of food. When this occurs, the microprocessor 25 determines whether it is the CLEAR key 21 which is being pressed, step s14. If the
CLEAR key 21 is not being pressed, the microprocessor 25 determines whether the SAT FAT key 18 is being pressed, step s15. If the answer at step s15 is no, the microprocessor 25 returns to step S14.
Once the SAT FAT key 18 has been pressed, the microprocessor 25 performs another number entry step, step s16. This enables a user to enter the quality in grams of saturated fats for the food item. At step s17, the microprocessor 25 determines whether the CLEAR key 21 is being pressed. If the CLEAR key 21 is not being pressed, the microprocessor 25 performs step s18 to determine whether the POINTS key 19 is being pressed. If the POINTS key 19 is not being pressed, the microprocessor 25 returns to step s17. If, however, the POINTS key 19 is being pressed, the microprocessor 25 performs step s19. At step s19, the microprocessor 25 calculates the points for the food item according to the equation: p= c +f 70 4 where p is the points value, c is the number of kilocalories entered and f is the number of grams of saturated fat entered.The microprocessor 25 then causes the display driver 33 to display the points value on the display 5.
Once the points value has been displayed, the microprocessor 25 moves to step s9. If, for instance, the displayed points value is greater than the points left for the user for the current day, the user may not eat the food item and can press the CLEAR key 21.
After step s20 is performed, the microprocessor 25 re-enters the loop of steps s2, s3 and s4.
Another embodiment of the present invention will now be described, with reference to Figures 2, 4 and 5.
Referring to Figure 4, a slimmer's calculator is substantially the same as the embodiment described above and the same features are indicated with the same reference numbers. However, this embodiment is provided with a
SCAN UP key 40 and a SCAN DOWN key 41. These keys are used in conjunction with a database of points values for different food items stored in the ROM 27 (Figure 2) to enable a user to use the calculator when the calorie and saturated fat values for a food item are not available, for instance when eating in a restaurant.
The operation of the calculator, shown in Figure 4, will now be described with reference to Figure 5.
The operation of the calculator of Figure 4 is that same as that of the calculator of Figure 1 except for the addition of a step, step s21, to the keypress test loop and an associated routine. If the answers to the tests at steps s2, s3 and s4 are all no, the microprocessor 25 determines whether the
SCAN UP key 40 or the SCAN DOWN key 41 is being pressed. If one of these keys is being pressed, the microprocessor 25 first tests whether it is the
SCAN DOWN key 41 which is being pressed at step s22. If the SCAN
DOWN key 41 is being pressed, the microprocessor 25 reads the first record from the database in the ROM 27 and causes it to be displayed (step s23).
The display 5 will comprise an identification of a food item, a number of points and the unit to which the points relate, for instance BANANA 1
EACH, STEAK 2 100G or COLA 1 100ML. Then the microprocessor 25 returns to step s22.
If it is not the SCAN DOWN key 41 which is being pressed, the microprocessor 25 confirms that the SCAN UP key 40 is being pressed. If this is the case, the microprocessor 25 performs step s25 which comprises causing the last item in the database to be displayed on the display 5. Then the microprocessor 25 returns to step s22.
If the SCAN UP key 40 or the SCAN DOWN key 41 is being pressed at this time, the microprocessor 25 moves to step s23 or step s25 as appropriate.
However, on this occasion, the preceding or succeeding database entry will be displayed, depending on which key is being pressed.
If neither the SCAN UP key 40 nor the SCAN DOWN key 41 is being pressed, the microprocessor 25 determines whether the CLEAR key 21 is being pressed. If the CLEAR key 21 is not being pressed, the microprocessor 25 moves on to step s27 where it determines whether a numerical key 6,..,16 is being pressed. If a numerical key 6,..,16 is being pressed, the microprocessor 25 returns step s22. Otherwise, the microprocessor 25 moves on to step s28 where it determines whether the POINTS key 19 is being pressed. If not, the microprocessor 25 returns to step s22. However, if it is, the microprocessor 25 performs step s29. At step s29, the microprocessor 25 multiplies the points value for the last displayed database entry by the number entered by the user. The result is displayed on the display 5. Next, the microprocessor 25 moves to step s9.
The skilled person will appreciate that many variants of the present invention are possible. For instance, the calculator may be provided with an alphanumeric keyboard and be programmed to allow a user to enter all or part of a word for searching the database. Additionally, a user could use the keyboard to add records to the database. The art of calculators includes many techniques for updating stored data and the skilled person will readily see how these might be applied to the present invention.
The skilled person will also appreciate that a calculator, according to the present invention, may have a subset of the features of the described embodiments. For example, the storing of the target and "points left today" values may be omitted.
Claims (8)
1. A calculator for assisting a person on a diet regime wherein said person is allocated a maximum daily points target, said points being related to the calorific value and another parameter of food ingested, the calculator comprising means for inputting a first number related to the calorific value of a food item, means for inputting a second number related to said other parameter of the food item, display means and processing means operative to process said numbers according to a pre-programmed algorithm to produce a resultant points value and to control the display to display said resultant points value.
2. A calculator according to claim 1, wherein the other parameter is the saturated fat content.
3. A calculator according to claim 1 or 2, wherein the pre-programmed algorithm is:
c f kl k2 where p is the resultant points value, c is the calorific value related number, f is the number related to the other parameter, and k, and k2 are constants.
4. A calculator according to claim 1, 2 or 3, wherein the processing means is operable to accumulate said resultant points value.
5. A calculator according to any preceding claim, including memory mean storing a database of data related to the calorific value and the other parameter of a plurality of foodstuffs.
6. A calculator according to any preceding claim, induding input means whereby said points may be directly input.
7. A calculator substantially as hereinbefore described with reference to
Figures 1, 2 and 3 or the accompanying drawings.
8. A calculator substantially as hereinbefore described with reference to
Figures 2, 4 and 5 of the accompanying drawings.
8. A calculator substantially as hereinbefore described with reference to
Figures 2, 4 and 5 or the accompanying drawings.
Amendments to the claims have been filed as~follows Claims 1. A calculator for assisting a person on a diet regime wherein said person is allocated a maximum daily points target, said points being related to the calorific value and another nutritional parameter of food ingested, the calculator comprising means for inputting a first number related to the calorific value of a food item, means for inputting a second number related to said other parameter of the food item, display means and processing means programmed to perform an algorithm so as to process said numbers to produce a resultant points value and to control the display to display said resultant points value.
2. A calculator according to claim 1, wherein the other parameter is the saturated fat content.
3. A calculator according to claim 1 or 2, wherein the algorithm is: c f
p = +~ kl k2 where p is the resultant points value, c is the calorific value related number, f is the number related to the other parameter, and k, and k2 are constants.
4. A calculator according to claim 1, 2 or 3, wherein the processing means is operable to accumulate said resultant points value.
5. A calculator according to any preceding claim, including memory means storing a database of data related to the calorific value and the other parameter of a plurality of foodstuffs.
6. A calculator according to any preceding claim, including input means whereby said points may be directly input.
7. A calculator substantially as hereinbefore described with reference to
Figures 1, 2 and 3 of the accompanying drawings.
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9522364A GB2302605B (en) | 1995-11-01 | 1995-11-01 | Slimmer's calculator |
| ZA968555A ZA968555B (en) | 1995-11-01 | 1996-10-10 | Slimmer's calculator |
| CA002235517A CA2235517A1 (en) | 1995-11-01 | 1996-11-01 | Slimmer's calculator |
| AU76026/96A AU714860B2 (en) | 1995-11-01 | 1996-11-01 | Slimmer's calculator |
| PCT/US1996/017511 WO1997016791A1 (en) | 1995-11-01 | 1996-11-01 | Slimmer's calculator |
| IL12416396A IL124163A (en) | 1995-11-01 | 1996-11-01 | Slimmer's calculator |
| BR9611402-9A BR9611402A (en) | 1995-11-01 | 1996-11-01 | Calculator to help a person on a diet. |
| NZ322307A NZ322307A (en) | 1995-11-01 | 1996-11-01 | Slimmer's calculator to calculate points value of food from the calorific and fat values |
| EP96938714A EP0859981A1 (en) | 1995-11-01 | 1996-11-01 | Slimmer's calculator |
| US08/896,855 US6040531A (en) | 1995-11-01 | 1997-07-18 | Process for controlling body weight |
| US09/305,088 US6436036B1 (en) | 1995-11-01 | 1999-05-04 | Process for controlling body weight |
| US10/194,059 US6663564B2 (en) | 1995-11-01 | 2002-07-15 | Process for controlling body weight |
| US10/682,966 US6878885B2 (en) | 1995-11-01 | 2003-10-14 | Process for controlling body weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9522364A GB2302605B (en) | 1995-11-01 | 1995-11-01 | Slimmer's calculator |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9522364D0 GB9522364D0 (en) | 1996-01-03 |
| GB2302605A true GB2302605A (en) | 1997-01-22 |
| GB2302605B GB2302605B (en) | 1998-01-07 |
Family
ID=10783221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9522364A Expired - Lifetime GB2302605B (en) | 1995-11-01 | 1995-11-01 | Slimmer's calculator |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0859981A1 (en) |
| AU (1) | AU714860B2 (en) |
| BR (1) | BR9611402A (en) |
| GB (1) | GB2302605B (en) |
| IL (1) | IL124163A (en) |
| NZ (1) | NZ322307A (en) |
| WO (1) | WO1997016791A1 (en) |
| ZA (1) | ZA968555B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6436036B1 (en) | 1995-11-01 | 2002-08-20 | Weight Watchers (Uk) Limited | Process for controlling body weight |
| CA2235517A1 (en) * | 1995-11-01 | 1997-05-09 | Weight Watchers (Uk) Limited | Slimmer's calculator |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2130769A (en) * | 1982-11-12 | 1984-06-06 | Roberts M L | Dietary apparatus |
| JPS59142657A (en) * | 1983-02-03 | 1984-08-15 | Matsushita Electric Works Ltd | Nutritive intake meter |
| JPS60237565A (en) * | 1984-05-10 | 1985-11-26 | Sharp Corp | Calculator with menu function |
| US4796182A (en) * | 1986-12-15 | 1989-01-03 | Gary Duboff | Diet monitor and display device |
| IT220035Z2 (en) * | 1990-07-04 | 1993-06-09 | Villa Giuliano Da | PROCESSOR TOOL, SUITABLE FOR PERMITTING THE CALORIC CONTROL OF DIETS. |
| AU2770792A (en) * | 1991-10-07 | 1993-05-03 | Michael Mahle | Personal health monitoring device |
| FR2714500B1 (en) * | 1993-12-24 | 1996-03-15 | Scmmd | Nutritional control device. |
| US5704350A (en) * | 1994-03-25 | 1998-01-06 | Nutritec Corporation | Nutritional microcomputer and method |
-
1995
- 1995-11-01 GB GB9522364A patent/GB2302605B/en not_active Expired - Lifetime
-
1996
- 1996-10-10 ZA ZA968555A patent/ZA968555B/en unknown
- 1996-11-01 AU AU76026/96A patent/AU714860B2/en not_active Ceased
- 1996-11-01 NZ NZ322307A patent/NZ322307A/en not_active IP Right Cessation
- 1996-11-01 WO PCT/US1996/017511 patent/WO1997016791A1/en not_active Application Discontinuation
- 1996-11-01 IL IL12416396A patent/IL124163A/en not_active IP Right Cessation
- 1996-11-01 BR BR9611402-9A patent/BR9611402A/en not_active Application Discontinuation
- 1996-11-01 EP EP96938714A patent/EP0859981A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| BR9611402A (en) | 1999-12-28 |
| ZA968555B (en) | 1997-05-20 |
| NZ322307A (en) | 2000-03-27 |
| AU7602696A (en) | 1997-05-22 |
| GB2302605B (en) | 1998-01-07 |
| EP0859981A1 (en) | 1998-08-26 |
| WO1997016791A1 (en) | 1997-05-09 |
| AU714860B2 (en) | 2000-01-13 |
| IL124163A (en) | 2002-08-14 |
| GB9522364D0 (en) | 1996-01-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Expiry date: 20151031 |